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On November 7, the Ministry of Land and Resources issued the “Recommended Catalogue of Land-saving Technology and Land-Saving Models (First Batch)†to encourage local exploration to specify the applicable requirements, support measures and liability for breach of contract in the land-saving technology and land-saving mode. content. For construction projects that use land-saving technologies and land-saving modes such as the development and utilization of underground space and the comprehensive development of rail transit properties, it is necessary to actively explore incentive support policies such as transfer methods and land prices.
The "Day to Day technology and the mode recommended directory (first batch)" encompasses "mine long distance transmission belt land and technology", "cemented fill mine underground mining land and technology", "yellow gold smelting comprehensive recovery of land and technology "" Mining mining plant construction and land integration mode "," coal gangue recycling and land mode "," U-type multi-storey factory and land mode "," three-dimensional space and land use intelligent storage mode "section 6 Local technology and 11 land-saving modes.
Mine long distance belt transmission and land saving technology
(1) Technical points
By setting up the truss, the belt suspension transportation is used to replace the car to develop and transport. There is no need to requisition the land to build the transportation road. Only a small amount of land needs to be rented for the construction of the pile frame, which does not affect the use of other land.
(2) Scope of application
It is suitable for mining in mountain mines with a certain height difference and long transportation distance.
(3) Application examples
1, the case name
Sichuan Yusheng Cement Group Co., Ltd. Yusheng Mining Field Limestone Belt Conveying Line Project.
2, the basic situation
Sichuan Yusheng Cement Group Co., Ltd. effectively transported limestone from Yusheng Mining Ground to the production plant area and reduced production costs. When the mine was expanded, the seven limestone belt conveyor lines were built to replace the automobile development and transportation. Therefore, the resource loss and waste in the mining process are reduced, the transportation cost of the automobile and the maintenance cost of the mining road are saved, and the safety accident that may be caused in the transportation process of the automobile is eliminated.
Figure 1 belt transmission line
Since the belt conveyor line is built on a mountain with an altitude of more than 1400 meters, the geographical conditions are special, there are inclination angles and height differences. After supporting the power generation system, the potential energy can be converted into kinetic energy, and then the kinetic energy is converted into electric energy.
The first 4.7-kilometer limestone belt conveyor line built in 2008 was built on a mountain with an elevation of more than 1400 meters and a vertical distance of 562 meters. The three motor units of the belt are tightly connected to the pulley, and the rated speed is less than 1490 rpm. When the belt full of material passes through the 500-meter drop zone, the huge gravitational potential energy will cause the motor speed to exceed the rated speed. At 1500 rpm or more, the motor becomes a generator at this time, which produces a constant flow of electricity.
Figure 2 Belt transmission line truss
(4) Application effect
At present, there are 7 belt conveyor lines in the Yusheng mining site, with a conveying distance of 14.4 kilometers and a tape length of 30 kilometers. According to the 6-meter-wide width of the transport road, the 30-kilometer belt conveyor line can save 270 mu of land, and the land-saving effect is obvious. At the same time, the belt conveyor can generate more than 2,500 kilowatts per hour, 18 hours a day, and can generate 15 million kilowatt-hours per year. This not only solves the use of the mine belt itself, but also delivers electrical energy to the mine platform crusher , successfully achieving “no electricity consumption, reverse power supply†and effectively reducing mine production costs.
Land-saving mode for the construction of integrated mining and mining plants
(1) Pattern characteristics
First, the use of grinding and flotation large-scale main process equipment to shorten the processing process.
Second, the mining site adopts horizontal process layout and steep mining mode by optimizing the mining boundary and reducing the stripping ratio.
Third, the functional areas are scientifically and rationally concentrated, increasing the floor area ratio and realizing intensive land use.
The fourth is to retreat while peeling off, increasing the green area.
(2) Scope of application
Mining area mining, concentrating plants, tailings pond design, etc., especially for the construction of closed mining mining and mining areas.
(3) Application examples
1, the case name
Jiangxi Copper Mining Industry Group Co., Ltd. Qibaoshan Qibaoshan lead zinc ore concentrator housing projects.
2, the basic situation
In January 2015, the Jiangxi Province Geological Mineral Exploration and Development Bureau, the West Geological Exploration Brigade submitted the “Jibaoshan Lead-Zinc Mine 2013-2014 Annual Mine Reserves Annual Report†of Shanggao County Jiangxi Province, Jiangxi Province, as of December 2014. On the 31st, the reserves of the Qibaoshan lead-zinc mine have: (111b+122b+333) industrial grade lead-zinc-copper ore volume of 379.824 million tons, metal amount of zinc 83293.8 tons, lead 55754.25 tons, copper 9997.74 tons, sulfur ore volume 114.151 10,000 tons, sulfur content of 16,680,815 tons. The industrial grade cobalt ore is 4,008,700 tons and the metal amount is 1,772.84 tons. Industrial grade siderite ore ore (333) class 470,070 tons. The amount of associated cadmium ore (333) is 3.926 million tons, the amount of metal is 378 tons; the amount of associated silver ore (333) is 3.926 million tons, the amount of metal is 52 tons, and the amount of associated arsenic ore (333) is 672,000 tons. The arsenic content is 2,805 tons. Achieve an annual production capacity of 330,000 tons of production scale.
3. Main practices
(1) Introduce advanced scientific and technological processes, select large-scale equipment of main process, and realize land saving.
First, Jiangxi Copper Group Qibaoshan Mining Co., Ltd. Qibaoshan lead-zinc mine in the beneficiation process, in 2015 plant transformation of plant equipment (MQG2.4*3.6M lattice ball mill + FG2400 high-grade spiral classifier + flotation The system optimizes the beneficiation process; through the transformation, the use of grinding and flotation large equipment, shortening the beneficiation operation process, thereby reducing the plant floor space.
The second is to add an 800-ton powder mine to reduce the floor space.
Figure 1 tailings reservoir heightening dam and dumping site
Figure 2 Expansion of the plant
Figure 3 tailings reservoir elevation first dam (5 meters high dam)
Figure 4 New 800 tons of powder ore warehouse
Figure 5 spiral classifier and lattice ball mill
Figure 6 Adding a flotation plant
(2) Realize land saving by optimizing the design.
From the planning and design, Jiangxi Copper Group Qibaoshan Mining Co., Ltd. Qibaoshan Lead-Zinc Mine strictly controlled the overall layout of the project and made reasonable planning. In accordance with the principle of unified planning, phased and batch implementation, the mining land will be separately optimized by optimizing the mining and selection process, optimizing the mining boundary, reducing the stripping ratio, increasing the dumping height of the dumping site and increasing the height of the tailing dam dam. The land for dumping sites and the land for tailings ponds have been further optimized to achieve the purpose of saving land. The mining site saves 10% of the land by optimizing the mining boundary, reducing the stripping ratio, and adopting the horizontal process layout and steep mining method.
Through joint scientific research with scientific research institutes, scientifically and reasonably calculate the slope stability of the dumping site, reduce the landfill height of the dumping site by increasing the earthing height of the dumping site, and at the same time arrange the construction of the road, the building backfill, and the tail by arranging Projects such as mine dams increase the rational use of waste rock in dumps.
(3) Through the scientific and rational centralized layout of each functional area, increase the floor area ratio and realize intensive land use.
The mineral processing system is built on the mountain and transported by belt conveyor to maximize the efficiency of ore transportation and reduce the land occupation of the transportation road. The dumping site and the ore crushing system are closely integrated with the mining area, and the ore and the waste rock are directly diverted from the entrance and exit.
(4) Reclamation while peeling off, increasing the green area.
In the open-pit mining, rationally arrange the production processes of humus stripping, waste rock discharge, ore mining, land reclamation, etc., and carry out centralized stacking of surface humus in all stripping processes, and at the same time, greening land in the dumping site and mining area. The implementation of greening, mining production and grassland reclamation at the same time design and construction at the same time, reducing the floor space.
Figure 7 Mining and reclamation
Figure 8 Qibaoshan lead-zinc mining area
(4) Application effect
By adopting advanced technology and optimized design, the ore dressing plant saves more than 20% of the land, the mining site saves 10% of the land, and the dumping site saves about 20% of the land. The reclamation and reclamation technology is adopted to increase the greening area and the ecological environment is obviously improved.
Cementing and filling mine underground mining technology
(1) Technical points
According to the mining method adopted in the mining section and the industrial site selected for filling, the high-concentration slurry cementing filling process of “tail mortar + fine sand + cement†and the high-concentration slurry cementing filling of “tail mortar + cement†are used to fill the whole mine. The self-flow cementing filling process undertakes 80% of the filling task of the whole mine, and the pumping cement filling process undertakes the filling task of 20% of the whole mine. The pumping filling part adopts the method of relay conveying, that is, the pumping force is added in the section where the self-flow conveying filling line is insufficient.
(2) Scope of application
Applicable to underground mine mining goaf processing.
(3) Application examples
1, the case name
WENGFU Datangpo phosphorus ore mining phosphate rock reverse flotation tailings backfill mine land and underground mining technologies.
2, the basic situation
Haofu (Group) Co., Ltd. is a state-owned large-scale phosphorus chemical enterprise with an annual production capacity of phosphate rock ore of 700*104t. The original capacity of the subordinate unit Xinlongba Concentrator is 350*104t/a. In order to meet the strategic development needs of the group company, the mineral processing capacity of the ore dressing plant in 2013 is 400*104t/a, and the tailings amount is about 2 million tons per year. The original Baiyan tailings storage capacity is far from meeting the production needs. In the long run, tailings consumption is imminent. At the same time, the subordinate unit Datang Mine is an underground mining mine with a phosphate ore mining scale of 100*104t / a. Underground mining will lead to geological disasters such as ground collapse and land subsidence. In order to make full use of tailings, improve the comprehensive utilization of resources, build resource-saving and environment-friendly mines, eliminate geological disasters, and promote the underground mining filling of Datang Mine is particularly important.
The annual design filling capacity of the Datang Mine Filling System Project is 540,000 square meters/a, and the project investment is about 206 million yuan. After the project is completed, it can consume 300,000 square meters of tailings annually, which can avoid the surface land from being damaged and effectively protect the topography and landscape. At the same time, the use of filling mining technology in underground mines can also provide a safe and reliable environment for mine pillar mining.
3. Main practices
According to the production process requirements of the mining method selected for underground mining in the Datang Mine Section, cementation filling is adopted. The cementing material is mainly used to mix 20% of tailings, cement and waste residue in the concentrating plant through the mortar ratio of 1:4 and 1:6. Filling the empty area.
Figure 1 Mining area, pit environment map
Figure 2 Production process flow chart
(4) Application effect
After the implementation of the filling technology, the ore recovery rate will be increased by 15% from the original 75% to 90%. It can avoid geological disasters such as surface subsidence and ground subsidence, and can protect the topography and landscape. Each year, 300,000 square meters of tailings can be consumed, the service life of the tailings pond is extended for 6 years, and more than 200 acres of newly acquired land are reduced.
Gold comprehensive smelting and recycling technology
(1) Technical points
The first is to adopt advanced processes such as wet pre- treating process and roasting acid production process at both ends to realize resource-free tailing smelting and saving tailings dumping sites.
The second is to rationally arrange the layout of the process plant, using a step-type and flat-slope combination method to save land.
(2) Scope of application
Suitable for gold smelting and recycling.
(3) Application examples
1, the case name
Gansu Zhaojin Precious Metal Smelting Co., Ltd. smelting recycling technology technology application.
2, the basic situation
Gansu Zhaojin Precious Metal Smelting Co., Ltd. was established in August 2012 and is a holding subsidiary of Zhaojin Mining Co., Ltd. Gansu Zhaojin Precious Metals Smelting Co., Ltd. is difficult to handle gold concentrate smelting project is the key project of investment promotion in Linyi County in 2012. In September 2015, it was recognized as a high-tech enterprise by Gansu Provincial Science and Technology Department. The total investment of the project is 2 billion yuan, covering an area of ​​440 mu. The total design scale is 1000 tons/day, of which: the first-phase daily processing scale is 400 tons, and the investment has been completed at 1.03 billion yuan. It can produce 5,000 kilograms of gold, 1,500 kilograms of silver, 4,000 tons of metal bismuth and 100,000 tons of sulfuric acid per year, and can realize an output value of 2 billion yuan.
Since the establishment of the company, with the strong support and help of the governments at the national and local levels, the company has closely focused on the state's policy orientation in the precious metal smelting industry, introduced international advanced production technology, and handled the difficult gold smelting concentrates in Gansu Province and surrounding areas. The maximization of resources is the only smelting enterprise in Gansu Province that uses gold as the main source, and comprehensive recovery of silver, copper, antimony, iron and sulfur. It is also a resource conversion, comprehensive recycling, recycling economy, energy saving and emission reduction. A high-tech enterprise featuring.
3. Main practices
(1) Introduce advanced scientific and technological processes, select large-scale equipment of main process, and realize land saving.
First, in the gold smelting process, the first large-scale comprehensive recycling high-efficiency equipment (wet removal enthalpy + roasting acid + cyanide, chlorination gold extraction) system was used in China to optimize the gold smelting process; at the same time, cooperate with domestic companies, independent research and development and We have produced the largest domestic wet pre-deuterium removal system and chlorination volatilization system. The Gansu Zhaojin precious metal smelting project uses a 2.6 m × 26 m dry rotary kiln and a 3.6 m × 32 m volatile rotary kiln. Its design diameter is the largest in the field of domestic gold chlorination, and the total designed power is the largest in the world of gold chlorination. For the first time, the Gansu Zhaojin Precious Metals Smelting Project combines the wet pre-treating process, the roasting acid-making process, the cyanide leaching process and the chlorination volatilization process.
The second is to build a 4,000-ton/year wet-pre-depreciation workshop, which is the first largest wet-recovery enamel workshop in China, which realizes the recovery of bismuth elements in low-grade bismuth-containing concentrates and reduces the floor space.
The third is to build the world's largest cyanide tailings chlorination volatile gold extraction process, processing 120,000 tons of cyanide tailings per year, removing tailings dumps, saving a lot of tailings dumping.
The fourth is the first use of the tailings-free process. After the original cyanide tailings adopts the chlorination volatile gold extraction process, the cyanide tailings are changed into iron-containing pellets, which can be used for cement raw materials and additives, and can also be used for aerating block production materials, saving tailings dumping yard. .
Figure 1 Integrated recycling plant
Figure 2 New chlorination gold extraction workshop
Figure 3 roasting acid system
Figure 4 Overall project engineering
(2) Realize land saving by optimizing the design.
Using advanced technology at home and abroad, the wet pre-deuterium removal process, the two-stage roasting acid production process, the cyanidation gold extraction process and the chlorination volatilization gold extraction process are combined to turn the original cyanide tailings into waste, realizing The tailless smelting of resources saves the cyanide tailings dumping site. In accordance with the principle of unified planning, phased and batch implementation, the project will further optimize the smelting process and rationally arrange the layout of the process plant to achieve the purpose of saving land.
Firstly, the wet pre-treating process of the gold-containing concentrate is carried out to recover the base metal resources, and then the sulfur element is recovered by the roasting acid-making process to produce sulfuric acid; secondly, the gold is recovered; finally, the cyanide tail which can not be reused is finally used. The slag ball is subjected to high-temperature roasting to further extract gold, silver, copper and other resources. The pellets after chlorine emission are sold as raw materials for cement production and raw materials for aerated block production, which realizes tailless smelting technology and saves the occupation due to stacking tailings. A large amount of land resources. The project has the advantages of advanced technology, advanced equipment, no tail, no waste, etc. It only saves more than 1,000 square meters of land for one year without cyanide tailings dumping site.
(4) Application effect
The gold smelting project is used in the smelting and processing of complex and difficult-to-handle gold concentrates. The overall application of this technology is internationally advanced, and it can realize the comprehensive recovery and non-tailing treatment of gold resources, greatly improving the technical level of the gold smelting industry and saving a lot of land. Resources. Through the combination of advanced smelting processes, the process of comprehensive recycling of gold resources is shortened, thereby reducing the plant floor space. Compared with the same kind of gold resource comprehensive recycling process, it saves more than 50% of land and saves land cost by 24 million yuan. The process layout adopts a step-type and flat-slope combination method, which saves 20% of land and saves land costs by 36 million yuan.
Parallel vertical distribution of land-saving technology for petrochemical production equipment
(1) Land-saving technology
Through the parallel and vertical distribution of multiple petrochemical production equipment, the repeated construction of multiple production lines is reduced.
(2) Scope of application
Suitable for a high degree of automation of the petrochemical industry.
(3) Application examples
1, the case name
Xianglu Petrochemical (Zhangzhou) Co., Ltd. built a 4.5 million tons/year PTA project.
2, the basic situation
Xianglu Petrochemical (Zhangzhou) Co., Ltd. PTA project initially planned to construct a PTA scale of 1.5 million tons/year, and applied for 50 hectares of land. In March 2009, it was approved by the National Development and Reform Commission. Afterwards, due to the consideration of upgrading the scale, optimizing the design, introducing advanced technology and upgrading the construction capacity to “4.5 million tons/year PTAâ€, the construction cost and production cost were greatly reduced, and the competitiveness of the enterprise was improved. The project abandoned the practice of separately constructing several production lines of the same scale to double the production capacity in the same industry. It was built in the red line of the original approved 1.5 million tons/year PTA project, and no new land was added, and the land for the original construction project was further reduced to 40.13 hectares, achieving intensive land use.
Figure 1 effect diagram
Figure 2 Factory landscape
The main production technology adopted by Xianglu Petrochemical (Zhangzhou) Co., Ltd.'s 4.5 million tons/year PTA project is the same as the 1.5 million tons/year PTA technology of Xiamen's parent company. The production process is consistent with the Xiamen plant. During the design and construction, the three plants in parallel were used to increase the production capacity to 4.5 million tons/year based on the process of the Xiamen plant, and the vertical distribution of the equipment was arranged, which greatly saved three 1.5 million tons/year of repeated construction. Land resources occupied by the PTA production line.
Figure 3 Vertical distribution Figure 1
Figure 4 Vertical distribution diagram 2
(4) Application effect
Except for public works and ancillary auxiliary facilities, the main equipment of the 1.5 million tons/year PTA production line needs to occupy 4.08 hectares, which is the scale of 4.5 million tons/year PTA. If it is constructed according to three 1.5 million tons/year PTA production lines, it needs to be rebuilt in the original batch. On the basis of the plan (50 hectares), the land is about 8.16 hectares, and a total of 58.16 hectares is needed. Through the above-mentioned land-saving mode, the scale of 4.5 million tons/year PTA is only 40.13 hectares, which can save 18.03 hectares of land.
Coal gangue recycling land use mode
(1) Pattern characteristics
Through the use of coal gangue power generation, the use of gangue underground backfill, production of coal gangue building materials, etc., to achieve coal gangue "eat dry and squeeze", reduce coal gangue emissions occupied.
(2) Scope of application
Suitable for coal mining and utilization.
(3) Application examples
1, the case name
Tiebingshan coal gangue resource recycling project in Tieling City.
2, the basic situation
Diaobingshan City is a resource-based city. It is located in Tiefa Coal Industry Group Co., Ltd. and is one of the eight coal production bases in China. Since the construction of the mine in 1958, the Iron and Coal Group has discharged a large amount of coal gangue to the ground every year, occupying a large amount of land, and requisitioning agricultural land every year. At present, there are 12 meteorite mountains in the city of Diaobingshan, with a total area of ​​161.47 hectares. With the development of the iron and iron group, the area occupied by coal gangue has also been expanding year by year. The occupation of coal gangue not only occupies the peasant land, but also causes dust and explosion hazard to the surrounding environment, which greatly threatens the production of local people. Life, at the same time, the land acquisition every year has increased the operating costs of the Iron and Coal Group. Solving the land occupation of the Rock Hill has become a prominent problem in the development of enterprises.
Figure 1 Panorama of coal gangue power plant
3. Main practices
The first is to build a coal gangue power plant, put into operation two sets of 300,000 kWh units, digest 3.3 million tons of coal gangue every year, reduce the land occupation of 17 hectares, of which 10 hectares of occupied land are used for reclamation.
The second is to use the paste filling coal mining process to reduce the ground discharge of meteorites by using the backfilling of the meteorite.
The third is to build a coal gangue building materials enterprise, burn coal gangue into hollow bricks, realize coal gangue “eat dry and squeeze outâ€, and now has built 4 coal gangue brick production lines, producing 300 million hollow bricks per year, and consuming 700,000 coal gangue annually. Tons, vacated 330 acres of arable land.
Figure 2 Coal Gangue Brick Workshop (1)
Figure 3 Coal Gangue Brick Workshop (2)
(4) Application effect
By adopting this model, starting from 2012, the Iron and Coal Group has achieved a negative growth in meteorites. It is expected that the existing 12 meteorite mountains will be basically digested within 10 years, and more than 160 hectares of cultivated land will be reclaimed, eliminating the land occupation caused by coal gangue stacking. Environmental pollution, achieving multiple social benefits such as saving farmland, saving energy, and protecting the environment.
Mine U-shaped multi-storey building site mode
(1) Pattern characteristics
The first is to use the slope of the U-shaped process structure, which is always wound up to the top of the plant. The slope ratio is 6%, which makes the vehicle climb hard.
Second, the second floor of the plant is built on the slope, which not only reduces the cost of infrastructure but also increases the carrying capacity of the building.
Third, the single-point nuclear load on the third and fourth floors of the plant reached 10 tons, which solved the problem that three or more floors could not be used as production workshops.
The fourth is to reserve space for the development of the enterprise, and the top of the building can be added.
Fifth, the screws are embedded in the inner column of one to four layers, and can be internally layered as needed.
(2) Scope of application
Applicable to the construction of new plants and the renovation of old plants.
(3) Application examples
1, the case name
The “efficient plant†of Yongkang Nengcheng Group.
2, the basic situation
Nengcheng Group is located in China's hardware capital, China's door capital - Zhejiang Yongkang, is a large-scale industrial group formed by Wang Li Group as an investment entity. Mainly engaged in door industry, lock industry, new energy industry, building new materials industry. The group is located at No. 888 Jindu Road, Economic Development Zone, Yongkang City. The total land area is 100 mu, the building covers an area of ​​55.8 mu, the total construction area is 214 mu, the building density reaches 55.8%, and the floor area ratio is 2.14. The height of the building is 8 meters. According to the existing policy, each floor can calculate the building area in two layers, and the floor area ratio will reach 4 or more.
Figure 1 Panorama of the factory building
3. Main practices
The Nengcheng Group's factory has four floors and a height of 32 meters. It uses the slope of the U-shaped process structure and continues to the top floor. The ramp is designed according to the road standard and is 11 meters wide. It can make two large trucks side by side or cross the road. The slope ratio is 6%, even if the large trucks filled with 80 tons of goods climb the slope will not be difficult; the ramp of each floor There is also a large loading dock for basketball courts, which can park three large trucks for loading at the same time.
Into the bottom of the plant, I feel the openness and height of it, the plant area is large, but there are not many pillars, the distance between the two pillars reaches 12 meters, the maximum use of production space, improve the utilization of the plant; At the same time, the floor height of the bottom layer has also been specially designed to reach 8.5 meters, of which the height of the atrium is even 15 meters to 18 meters. The 25-ton single-beam crane can reach all corners of the workshop and is suitable for large industrial production.
Figure 2 Three-meter expansion joints and floor reservations reserved in the plant
The second layer is built on the slopes of the terrain. One-fifth of the area is built on the mountain. It not only reduces the cost of infrastructure but also increases the carrying capacity of the floor. It can place hundreds of tons of reloading equipment.
The single-point nuclear load on the third and fourth floors is up to 10 tons, which means that 10 tons of equipment can be placed anywhere on the floor, solving many of the three-storey buildings can only be used as warehouses, not as production workshops. problem. The top design is the most distinctive. The top floor has a total area of ​​30 acres, all of which are covered with thick soil. It can be developed into a small vegetable base or an ecological sky garden. The gully designer on the roof also made a clever treatment to build a pool for collecting rainwater. The gully pool reached a storage area of ​​nearly 6 acres, and the water storage capacity of up to 2,000 tons can be reached. The collected rainwater can be used. The cleaning of the workshop and the flushing of the bathroom greatly save water resources.
This factory not only makes reasonable design for the first to fourth floors, but also maximizes the utilization rate of the plant. It also reserves space for the future development of the enterprise. According to the development needs of the enterprise, the plant can add two more on the top of the building. The layer is changed to six layers; at the same time, 8-10 screws are embedded in the inner column of one to four layers, and the inner layer is added according to the use, and the four-storey building can be turned into eight layers.
Figure 3 U-type ramp
(4) Application effect
Yongkang industrial enterprises are mainly in the hardware industry. Due to the restrictions of the industry and heavy equipment, most industrial enterprises build a layer of factory buildings with a low floor area ratio. The volume ratio of Nengcheng Group 2.14 broke through the limitations of the hardware industry, greatly improving the land utilization rate. Calculated according to the plot ratio of 1, it saved 114 acres of land.
Three-dimensional space using intelligent storage and land saving mode
(1) Pattern characteristics
First, establish a physical logistics center on the ground, and introduce integrated equipment such as production packaging and storage three-dimensional shelf system to improve space utilization;
The second is to build a raw material warehouse, product sample room, record storage room, etc. to save space for warehousing and scientific research.
(2) Scope of application
Space construction is suitable for enterprises that have the conditions for utilization of above-ground and underground space, require large-scale storage, and meet underground storage conditions. Automatic packaging and storage of three-dimensional shelf system and other equipment for the medical and other industries.
(3) Application examples
1, the case name
Shijiazhuang Four Medicine Co., Ltd. uses the development model of above-ground and underground space.
2, the basic situation
Shijiazhuang Four Medicine Co., Ltd. was founded in 1948 and has grown into a large-scale comprehensive pharmaceutical company. At present, the company is located at No. 288, Zhujiang Avenue, High-tech Industrial Development Zone, Shijiazhuang, with a registered capital of 400 million yuan. It has nearly 4,000 employees, including more than 40% of professional and technical personnel, and assets of 3 billion yuan. It has large-volume injections and small-volume injections. Tablets, capsules, granules, oral liquids, rinsing agents and other products, with the production capacity of more than 200 specifications of multi-agent type.
3. Main practices
(1) In combination with the company's products and future development orientation, the company has established the construction work of “production first (production investment), post office (administrative office investment); heavy production (productive investment), slow administrative (administrative affairs investment)†The general policy is to concentrate the limited land and funds first on the development of production. At the same time, scientifically allocate land resources, rationally lay out functional divisions, and combine land occupation with energy conservation and emission reduction to meet the current and future land use needs.
(2) Make full use of the above ground and underground space. In the project planning, pay attention to “one-on-oneâ€, especially in production and infrastructure construction, make full use of above-ground and underground space resources, build a three-dimensional logistics center on the ground, and build a multi-purpose basement underground to improve the overall efficiency of land use.
The first is to build a three-dimensional logistics center on the ground, and introduce an automatic packaging and storage three-dimensional shelf system that is connected with the production line to realize automation and informationization of key logistics links such as drug acceptance, storage, sorting and distribution. The single-storey building of the logistics center has a height of 24 meters and a building area of ​​6,000 square meters. The total number of cargoes reaches 12,700, and it can automatically store 15.24 million bottles of infusion products, which is equivalent to 7 times the original floor space. It has created the record of the highest single-storey height in the country and the largest span of the warehouse, which greatly improved the utilization rate of the warehouse and the efficiency of loading and unloading, and improved the land utilization rate.
Figure 1 company stereo library interior
The second is the use of underground space. Fully excavate the underground space, using the underground area of ​​more than 30,000 square meters, equivalent to nearly one-fifth of the original land. The basement is 5.4 meters high and 1.4 meters above the surface. It has a recording sample room, a feeding station, a cool storage, and energy pipes such as water, electricity and steam. The basement is equipped with skylights to reduce the illumination and the ground is waterproofed. The standard of the cool library. By utilizing the characteristics of underground insulation, all the materials required in each workshop are stored here, which not only meets the storage requirements and quality assurance of materials, but also reduces the manual usage of long-distance turnover, saving production and operation costs. At the same time, there is a product sample room and a record storage room, which greatly reduces the energy consumption required for storage requirements. In addition, the energy pipeline is placed in the basement for convenient daily maintenance and maintenance.
Figure 2 basement work scene
(4) Application effect
By building a three-dimensional logistics center on the ground and an underground warehouse and raw material warehouse, 6.67 hectares of land will be saved. The project will further integrate the advantages of land intensive comprehensive utilization and two-in-one integration. After completion, it can meet the production and storage needs of the high-tech zone, and play a vital role in promoting enterprises to short-term and cost reduction. Its completion will set a new chapter in the management of four drug flows, and will also set a benchmark for innovation in the modernization of logistics management throughout the pharmaceutical industry.
“Zero-increasing land†technology reforms
(1) Pattern characteristics
By standardizing land use standards, rewarding potentials, and strengthening dynamic management, the company will be encouraged and guided to implement technological transformation, capital increase and expansion, and development transformation on the original land, or the government will use the stock resources to carry out investment promotion and realize industrial transformation and upgrading.
(2) Scope of application
It can be used to revitalize idle or inefficient use of stock assets.
(3) Application examples
1. Beiqi Futian Zhucheng Automobile Factory implemented the “Zero Increase Land†technical upgrading and upgrading case
First, the original paint shop was used to rebuild the M4 coating production line, and the original container workshop was used to transform into the M4 assembly shop, with a new construction area of ​​31,000 square meters. By integrating the entire process of the body, paint and final assembly lines into an intelligent production workshop, 40% of the land is saved compared to the traditional workshop, and the optimization of the production structure and the land-saving technology is realized.
The second is to use the original open space of the factory, and build new M4 body workshop, RDC library, falling cabin inspection workshop, PDI and integrated station building, etc., with a new construction area of ​​41,000 square meters.
The third is to upgrade and renovate roads and other supporting projects, and make full use of the underground space to build a water treatment pool of 0.6 million square meters, optimize the spatial layout and process, and the land use space is intensive and efficient. This model is suitable for the relatively inefficient use of industrial development land, especially in areas where traditional industries account for a large proportion and have been greatly developed.
Figure 1 Drop box storage area before renovation
Figure 2 New RDC library
Figure 3 The original body shop uses a single-layer design and does not make full use of the space.
Figure 4 The two-layer design of the body shop, the ground is the welding production line, the second floor is used for the body transport and air accumulation
2. The implementation of the “zero increase of land†transformation of the backward industries to build the Longyuan School case
The 240-mu low-efficiency land formed by the original Ruilinxiang Electromechanical Co., Ltd. was used to construct the new campus of Longyuan School, and 160,000 square meters of teaching buildings, dormitory buildings, staff apartments and standardized playgrounds were built. Ruilinxiang also transferred low-efficiency land. The return of funds is 100 million yuan to help enterprises solve practical difficulties and revitalize existing resources. This model is suitable for backward industries that have a large land area.
Figure 5 Longyuan School New Campus under construction
Figure 6 Zhucheng Ruilinxiang Electromechanical Co., Ltd. original factory area
(4) Land saving effect
The development of “Zero Increased Land†will revitalize nearly 1,500 mu of land in the cities every year, so that the GDP output of the city's construction land will increase from 127,500 yuan per mu at the end of the 11th Five-Year Plan to 189,700 at the end of the 12th Five-Year Plan. Yuan, an increase of 48%, the investment intensity increased from less than 1 million yuan per mu to 2.6 million yuan. More than 400 enterprises in the city have achieved “zero increase in land†and developed 2,600 mu of land.
This model is an effective measure to solve the problem of “destocking and cost reductionâ€. It is a good demonstration to promote innovation development, coordinated development and green development, and has great promotion and application value.
Roof photovoltaic power generation mode
(1) Pattern characteristics
The photovoltaic panels are laid on the roof of a large-scale, large-area house, making full use of the roof space of the house without occupying the ground.
(2) Scope of application
Large-area, large-area roofs provide space.
(3) Application examples
1, the case name
The Lee Kum Kee (Xinhui) production base has started the photovoltaic power generation production and land saving project.
2, the basic situation
The Lee Kum Kee (Xinhui) production base is the world's largest production base of the Lee Kum Kee Group. It currently covers an area of ​​about 1,700 acres, including Lee Kum Kee (Xinhui) Food Co., Ltd., which produces sauce condiments, and Infinitus (China), which produces health products. the company. In 2015, Lee Kum Kee (Xinhui) production base property value was 26.616 billion yuan, an increase of 27.36%; tax payment was 3.45 billion yuan, an increase of 28.7%. At the same time of steady development, the Lee Kum Kee (Xinhui) production base is committed to the development of environmental protection and energy conservation, application of new energy and new technologies.
3. Main practices
In June 2015, Lee Kum Kee’s six-month solar photovoltaic project was successfully completed and opened. The Lee Kum Kee Photovoltaic Power Station is located at the top of a 47,000-square-meter plant at the Xinhui production base, which uses solar interfaces to directly convert solar energy into electricity. The power plant construction capacity is 4.3 megawatts (4.3 megawatts, MWp for short), and the annual power generation capacity is 3.98 million kWh, which is equivalent to saving 1312 tons/year of standard coal consumption and 3448 tons/year of carbon emissions. Lee Kum Kee is the first large-scale enterprise to start photovoltaic power generation in Xinhui, and is the first condiment enterprise in the country to start photovoltaic power generation projects.
The Lee Kum Kee (Xinhui) production base photovoltaic power generation project is the first large-scale photovoltaic grid-connected power generation project in Jiangmen City. It is also the first PV-connected power generation project built by the country's first food production enterprise with an installed capacity of 4.3 MW. Photovoltaic power generation relies on solar modules that use the electronic properties of semiconductor materials to convert light energy into electrical energy. The grid-connected power generation system converts the received solar radiation energy into high-voltage direct current through the high-frequency direct current conversion through the photovoltaic array. After the inverter is inverter-inverted, it outputs the same-frequency, in-phase sinusoidal alternating current with the grid voltage to the grid.
Figure 1 Before the project implementation
Figure 2 Project implementation
Figure 3 After the project is implemented
Figure 4 effect diagram
(4) Application effect
Compared with traditional thermal power generation, the solar photovoltaic power generation technology enabled by the Lee Kum Kee (Xinhui) production base not only achieves environmental protection and energy conservation, creates green production, but also contributes to land conservation and intensive use. From the point of view of space occupation, it is a three-dimensional utilization, which reduces the actual occupation of such facilities as traditional thermal power generation, photovoltaic power generation, power generation equipment and raw material stacking, alleviating the pressure of land use.
In addition, compared to other energy technologies, Lee Kum Kee photovoltaic power station has the advantages of safe and clean, energy saving and emission reduction, and sufficient resources to regenerate. The solar photovoltaic panel can also play a role in blocking sunlight and effectively regulate the indoor temperature of the plant.
Spherical Bearings are radial Plain Bearings consisting of an outer ring and an inner ring made of bearing steel and with spherical sliding contact surface. These bearings are suitable for arrangements with heavy radial load at low misalignment and oscilation. Furthermore the bearings can carry specific axial load in both directions.
Design specifications
Main dimensions
Main dimensions of spherical bearings are in accordance with the international standards ISO 6124/1.
Designation
Designation of standard spherical bearings is specified in the dimension tables and consists of type designation and dimension. Non-standard designation (radial clearance, sealing, dimension differences) are designated according to the standard STN 02 04608.
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