CN116025360A - Dry type stoping method for tailing pond - Google Patents
Dry type stoping method for tailing pond Download PDFInfo
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- CN116025360A CN116025360A CN202310013830.7A CN202310013830A CN116025360A CN 116025360 A CN116025360 A CN 116025360A CN 202310013830 A CN202310013830 A CN 202310013830A CN 116025360 A CN116025360 A CN 116025360A
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Abstract
The invention discloses a dry type stoping method of a tailing pond, which comprises a stoping I area, a stoping II area and a stoping III area which is stoped finally, wherein the stoping areas and blocks adopt sand taking strips, sand taking channels, transportation roads in the pond and sand pit drainage pits, and the following technical scheme is adopted for taking sand and selling the pond: and (3) dividing the tailing pond into zones, blocks and strips, and carrying out layered belt-by-belt sand taking on each zone. The trend of the beach surface in the stoping process is strictly controlled, and drainage ditches are arranged in the junction area of the area to drain flood so as to reduce the flood drainage pressure; the layer mining is carried out, and the mining process controls the slope ratio of the stoping slope so as to increase the safety and stability of the stoping slope; meanwhile, the manual stoping protection structure of the stoping protection area is safe, so that the transportation efficiency of the sand taking and selling warehouse of the tailing pond is improved, and the problem of a storage site for sand taking and airing is solved.
Description
Technical Field
The invention relates to the technical field of tailing pond sales-warehouse engineering, in particular to a tailing pond dry-type stoping method.
Background
Tailings ponds are a necessary facility to maintain normal production for mine enterprises. The tailing pond is used as a high potential energy body, is always a dangerous source tailing pond, and is still in a severe production situation, and a secondary emergency occurs still.
The tailings are used as solid waste with the largest output and the largest stockpiling amount at present, so that the environmental problems and potential safety hazards are brought, and the sustainable development of mining economy and mining cities is severely restricted. The existing large number of tailing ponds are recycled, so that waste is turned into wealth, resources and environmental pressure can be effectively relieved, and potential safety hazards of the tailing ponds are finally relieved or eliminated. However, as tailings ponds are increasingly mined, accidents are difficult to avoid if links such as key mining technology and safety facilities are not paid attention to in the mining process.
The tailings are used as a manual secondary resource, the stoping is different from the stoping of original mineral resources, and the tailings are generally in an open-air stoping mode, and because the bearing capacity of piled tailings is low and uneven, factors of bearing capacity and rainfall of the tailings are considered when a stoping method is selected, and particularly, the safety and stability of a slope and the requirement on flood discharge capacity in the stoping process are considered.
The tailing extraction mainly comprises two modes of water extraction and dry extraction. Wherein, the mature water production is the sand production ship recovery and the hydraulic flushing sand recovery, and the filter pressing facilities are generally matched; dry mining generally uses an excavator plus a transport system for stoping. Generally, the sand mining ship is relatively good in stoping, damage to the tailing pond dam body and the flood discharging system is small, early investment is large, the in-pond backwater needs to be supplemented at any time, and management and stoping operation costs are high. The hydraulic sand washing recovery is relatively simple in process, but the requirements on operators are relatively high. In order to recover tailings, an artificial swamp area needs to be formed at the tail part of the tailings reservoir, and the risk is high in rainy seasons or in high rainfall. The excavator is adopted to be extracted by a transportation system, the process is simple, the labor intensity is low, and the safety production management is easy. The automobile transportation is relatively widely applied, and is mainly characterized by flexible maneuvering and convenient movement.
Studies have shown that: considering that most tailing ponds of current stoping are stopped or closed for years, the surface is hardened, the tailing pond has certain bearing capacity, compared with the mode of tailing water mining, the dry stoping is simple and flexible, dehydration filter pressing is not needed to be considered, the drainage pressure and the stoping slope in the stoping process are easier to control, and the safety coefficient of the stoping process is higher. Dry recovery, however, has the following problems: when sand taking and selling are carried out on a tailing pond which is already closed and has a special protection area in the pond, the problems of large-area unordered mining, large drainage pressure in the pond, insufficient stability in the extraction process, high risk of damaging structures in the pond and the like exist in the one-time extraction process.
Disclosure of Invention
The invention aims to provide a dry extraction method for a tailing pond, which is characterized in that the tailing pond is partitioned, segmented and banded, and each region is subjected to layered and band-by-band sand extraction. The trend of the beach surface in the stoping process is strictly controlled, and drainage ditches are arranged in the junction area of the area to drain flood so as to reduce the flood drainage pressure; the layer mining is carried out, and the mining process controls the slope ratio of the stoping slope so as to increase the safety and stability of the stoping slope; meanwhile, the manual stoping protection structure of the stoping protection area is safe, so that the problems in the background technology are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the dry type stoping method for the tailing pond comprises a stoping I area, a stoping II area and a stoping III area which is stoped finally, wherein sand taking strips, sand taking channels, conveying roads in the pond and sand pit drainage pits are used for the stoping areas and blocks, and the following technical scheme is adopted for taking the sand pin pond; the method comprises the following specific steps:
s1: in the extraction process of the tailing pond, the plane width of the sand taking strip is 20m, the vertical layering thickness is 1.5m, and the pit slope ratio is 1:4, slope placing and sand taking;
s2: the width of the top of the sand-taking channel is 5.0m, the channel is compacted by using gravels and soil, and the slope ratio of two sides of the channel is 1:2;
s3: in the sand taking process, tightly forbidding formation of a tailing pile or stacking of other materials within a range of 20m in front of a tailing dam and 10m around the top of a tailing pit;
s4: the stope I area is more dug than the stope II area by one layer and is used for forming a flood regulating reservoir capacity;
s5: the surface of the stope I area always inclines towards the direction in the warehouse more than or equal to 1 percent; the surface of the stope II area always inclines towards the drainage ditch more than or equal to 3 per mill, so as to ensure the surface drying in the sand taking process;
s6: taking sand strip by strip on the plane of the stoping I area from east to west, and taking sand on the plane of the stoping II area according to the sequence of stoping II area A block, stoping II area B block, stoping II area C block and stoping II area D block;
s7: digging a buffer pool around the overflow tower before stoping, and digging a sand pit drainage ditch communicated with the buffer pool in the stoping process to clarify and drain water and rainwater through the buffer pool; the sand pit drainage ditch is provided with a plurality of geotechnical cloth sections for filtering and blocking, the ring tower body of the overflow tower is provided with a grid for fixing the geotechnical cloth for filtering and blocking, and a water return tank is arranged outside a tailing pond at the downstream of the flood drainage system;
s8: the safety warning marks are arranged along the line of the flood drainage structure in the sand taking process, the sand pit water guiding and draining pit, the drain pipe, the diversion well and the periphery of the buffer pool are protected along the 15m range, the sand taking operation is carried out by adopting manual exploitation and water gun stoping, and the sand side slope ratio of the periphery of the overflow tower is 1:4, a step of;
s9: in the operation process of the stoping I area and the stoping II area, protective work is carried out on the stoping III area, and the total slope ratio of sand taking slopes at the lap joint positions of the stoping I area, the stoping II area and the stoping III area is more than or equal to 1:5, determining the height of the side slope steps according to actual conditions; and carrying out sedimentation and displacement monitoring on the structures in the stoping III region in the stoping process, and determining the thickness of the horizontal tailings pile-up body, the stratum stress diffusion angle and the horizontal conduction distance of the basic stress in the tailings pile-up body under the newly-built factory building and auxiliary facilities in the reservoir region.
Further, the sand taking range in the warehouse is divided into a stoping I area, a stoping II area and a stoping III area, wherein the stoping II area is further divided into a stoping II area A block, a stoping II area B block, a stoping II area C block and a stoping II area D block, the stoping III area is a brickyard factory building and auxiliary facility arrangement area, after stoping of the stoping I area and the stoping II area is finished, the stoping III area is dry-type layer by layer, and the factory building and auxiliary facilities are removed.
Further, the specific method in S6 is as follows:
s601: firstly, stoping the stoping I area to the beach face to two stoping layers in the vertical direction, and stoping the stoping I area to the No. 3 stoping layer, wherein the stoping I area and the stoping II area keep the height difference of two stoping heights;
s602: a layer is stoped in the vertical direction on a stoping zone II according to the sequence of the block A, the block B, the block C and the block D, and a stoping height difference is kept between the stoping zone I and the stoping zone II;
s603: the stoping zone I stopes one stoping layer with stoping height in the vertical direction until the stoping zone I zone 3 is a stoping layer, and the stoping zone I and the stoping zone II keep the height difference of the two stoping heights at the moment;
s604: and (3) stoping one layer in the vertical direction on the stoping zone II according to the sequence of the block A, the block B, the block C and the block D, wherein the stoping zone I and the stoping zone II keep a height difference … … of stoping height until the stoping reaches the original ground surface of the bottom of the warehouse.
Furthermore, the horizontal safety distance between the newly built factory buildings and auxiliary facility structures in the warehouse area and the sand production side slope is more than or equal to 40m.
Furthermore, the area surrounded by the initial dam and the reservoir side line is covered on the sand taking plane, and the current beach surface to the original surface of the reservoir bottom is covered on the vertical direction.
Compared with the prior art, the invention has the beneficial effects that:
1. the dry type stoping method for the tailing pond provided by the invention can be used for carrying out sand taking and transportation on the tailing of the tailing pond through the excavator, the bulldozer and the dump truck, and has the advantages of simplicity, flexibility and no need of considering filter pressing and dehydration.
2. According to the dry type stoping method for the tailing pond, provided by the invention, a regional stoping system is adopted, and the stoping area is always one layer more than the stoping area two, so that the requirement of the tailing pond on the adjustment of Hong Kurong in the stoping process is met.
3. According to the dry type stoping method for the tailing pond, the elevation of the overflow area of the overflow tower is kept to be the lowest all the time in the stoping process, the earth surface of the pond area is converged and flows to the area where the overflow tower is located in a downhill mode, and the purpose of drainage in the tailing pond is achieved by using a flood drainage system existing in the tailing pond.
4. According to the tailing pond dry type stoping method, tailings are aired and mined in the sand mining strips, so that the field problem of tailing airing is solved, meanwhile, the tailing stoping procedure is reduced, and the tailing pond sand taking and selling cost is reduced.
5. According to the dry type stoping method for the tailing pond, provided by the invention, the stoping tailings are used for making bricks through the newly built factory building and auxiliary facilities in the stoping III area in the tailing pond, so that the problem that land resources are occupied by site selection of the newly built factory building and the auxiliary facilities is solved, the transportation distance of the tailings in the tailing pond is reduced, and the transportation cost of the tailings taken by a sales warehouse is reduced.
6. According to the tailing pond dry type stoping method, tailings obtained from the tailing pond are used for making bricks, so that waste is changed into things of value, the resource and environmental pressure are relieved, the social and environmental benefits are high, and the overall aim of 'green mines and no waste mine' advocated at present is met.
Drawings
FIG. 1 is a plan view of a tailings pond of the present invention;
FIG. 2 is a schematic view of A-A section of the present invention;
FIG. 3 is a view showing a structure of a B-B section of the present invention;
FIG. 4 is a schematic diagram of a cross-sectional view of a sand removal transportation channel according to the present invention;
FIG. 5 is a cross-sectional view of the construction of the transportation path of the ring magazine according to the present invention;
FIG. 6 is a cross-sectional view of a weak foundation treatment structure for a link library of the present invention;
fig. 7 is a schematic structural diagram of the flood drainage system of the overflow tower of the present invention;
FIG. 8 is a schematic view of the structure of section C-C of the flood drainage system of the overflow tower of the present invention;
fig. 9 is a schematic view of a grid-secured geotextile filter retaining structure of the present invention.
In the figure: 1. taking a sand strip; 2. taking a sand channel; 3. transportation roads in the warehouse; 4. a ring warehouse transportation road; 5. sand pit drainage pit; 6. an overflow tower; 7. a drain pipe; 8. a diversion well; 9. the grid fixes the geotechnical cloth and filters and blocks; 10. paving a bamboo fence and a steel plate; 11. a buffer pool; 13. geotextile.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiment of the invention, the following steps are included: the dry type stoping method for the tailing pond comprises a stoping I area, a stoping II area and a stoping III area which is stoped finally, wherein the stoping areas and blocks adopt sand taking strips 1, sand taking channels 2, in-pond transportation roads 3 and sand pit drainage pits 5, and the design principle is as follows:
1) According to the embodiment of the invention, the sand taking range in the warehouse is divided into a stoping I area, a stoping II area and a stoping III area, wherein the stoping II area is further divided into a stoping II area A block, a stoping II area B block, a stoping II area C block and a stoping II area D block, the stoping III area (a protection area) is a brickkiln factory building and auxiliary facility arrangement area, and after stoping of the stoping I area and the stoping II area is finished, the stoping III area is dry-type layer by layer, and the factory building and auxiliary facilities are removed; the extraction sand range in the tailing pond generally covers the area surrounded by the initial dam and the pond side line, and the current beach surface is vertically and reversely covered to the original surface of the bottom of the pond; and after the sand is taken out, the primary dam, the rock-fill dam body, the flood discharge structures and the like of the main dam are removed thoroughly, and the original topography and the landform are restored thoroughly.
2) In the stoping process, in order to meet the requirements of flood regulating reservoir capacity, firstly stoping two stoping layers from a stoping zone I to a beach face in the vertical direction, and keeping the height difference of two stoping heights from a stoping zone I to a stoping zone 3; then, a layer of stoping is carried out on a stoping zone II in the vertical direction according to the sequence of the block A, the block B, the block C and the block D, and a stoping height difference is kept between the stoping zone I and the stoping zone II; then the stoping layer with one stoping height is stoped in the vertical direction in the stoping zone I, and the stoping layer is stoped to the stoping zone 3 in the stoping zone I, and the stoping zone I and the stoping zone II keep the height difference of the two stoping heights at the moment; and then stoping a layer in the vertical direction on a stoping zone II according to the sequence of the block A, the block B, the block C and the block D, wherein the stoping zone I and the stoping zone II keep a height difference … … of stoping height until the stoping reaches the original ground surface of the bottom of the reservoir.
3) In the tailing pond stoping process in the embodiment, the width of the sand taking strip 1 is 20m, the vertical layering thickness is 1.5m, and the pit slope ratio of the sand taking strip 1 is 1:4, putting the slope to take out sand so as to prevent the slope from collapsing. The width of the top of the sand-taking channel 2 is 5.0m, the channel adopts gravelly soil compaction (the compactness is based on the requirement of safe running of vehicles), and the slope ratio of two sides of the channel is 1:2. in the sand taking process, tail sand piles or other materials are strictly forbidden to be formed within the range of 20m in front of the tailing dam and 10m around the pit top of the tail sand pit. In order to ensure the safety of flood season, the stope I area should always ensure that a layer is dug more than the stope II area so as to form necessary flood regulating reservoir capacity. In order to ensure the surface drying in the sand taking process, the surface of the stope I area always inclines more than or equal to 1% towards the direction in the warehouse; the surface of the stope II area always inclines towards the drainage ditch more than or equal to 3 per mill.
4) Taking the sand from the plane of the stoping I to the plane of the stoping II in the sequence of stoping II A block, stoping II B block, stoping II C block and stoping II D block according to the requirements of drainage and operation order comprehensively. In order to prevent environmental protection caused by leakage of tailings, a buffer pool 11 is firstly excavated around an overflow tower before stoping, and a sand pit drainage ditch 5 is excavated in the stoping process to be communicated with the buffer pool 11, so that water seepage and rainwater are clarified and leaked through the buffer pool 11; the sand pit drainage ditch 5 is provided with a plurality of grids for fixing geotechnical cloth filtering and blocking 9 for filtering and blocking in a segmented manner, and the ring tower body of the overflow tower 6 is provided with the grids for fixing geotechnical cloth filtering and blocking 9; and a water return tank is arranged outside the tailing pond at the downstream of the flood discharge system, so that the external drainage is clarified. Safety warning marks are always arranged along the line of the flood drainage structures in the sand taking process, and mechanical and transportation equipment crossing is strictly forbidden; the periphery of the sand pit water guiding and draining pit 5, the drain pipe 7, the diversion well 8 and the buffer pool 11 is specially protected along the line 15m range, manual exploitation and water gun stoping are adopted for sand taking operation, and the sand side slope ratio of the periphery of the overflow tower 6 is 1:4.
5) In the operation process of the stoping I area and the stoping II area, protection work is carried out on the stoping III area, and the total slope ratio of sand taking slopes at the lap joint positions of the stoping I area, the stoping II area and the stoping III area is more than or equal to 1:5, determining the height of the side slope steps according to actual conditions; when the height of the joint slope between the stoping III area and other stoping areas is more than 3m, a special safety construction scheme is compiled and confirmed by expert demonstration, and the stoping process is required to carry out settlement and displacement monitoring on the structures of the stoping III area. Determining the thickness of a horizontal tailing stacking body, the stratum stress diffusion angle and the horizontal conduction distance of basic stress in the tailing stacking body of a newly built factory building in a reservoir area and auxiliary facilities according to the early investigation; for safety, the horizontal safety distance between the newly built factory buildings in the warehouse area and auxiliary facility structures and the sand production side slope is required to be more than or equal to 40m.
Based on the above principle, the specific steps of the embodiment of the invention are as follows:
s1: in the tailing pond stoping process, the plane width of the sand taking strip 1 is 20m, the vertical layering thickness is 1.5m, and the pit slope ratio is 1:4, putting a slope to obtain sand so as to prevent the slope from collapsing;
s2: the width of the top of the sand-taking channel 2 is 5.0m, the channel adopts gravelly soil compaction (the compactness is based on the requirement of safe running of vehicles), and the slope ratio of two sides of the channel is 1:2;
s3: in the sand taking process, tightly forbidding formation of a tailing pile or stacking of other materials within a range of 20m in front of a tailing dam and 10m around the top of a tailing pit;
s4: in order to ensure the safety of flood season, the stope I area is always ensured to be more dug than the stope II area to form necessary flood regulating reservoir capacity;
s5: in order to ensure the surface drying in the sand taking process, the surface of the stope I area always inclines more than or equal to 1% towards the direction in the warehouse; the surface of the stope II area always inclines towards the drainage ditch more than or equal to 3 per mill;
s6: taking sand from the plane of the stoping I area by strips in the east-west direction by comprehensively considering the drainage and operation order requirements, and taking sand from the plane of the stoping II area by the sequence of stoping II area A blocks, stoping II area B blocks, stoping II area C blocks and stoping II area D blocks;
s7: in order to prevent environmental protection caused by leakage of tailings, a buffer pool 11 is firstly excavated around an overflow tower 6 before stoping, and a sand pit drainage ditch 5 is excavated in the stoping process to be communicated with the buffer pool 11, so that water seepage and rainwater are clarified and leaked through the buffer pool 11; the sand pit drainage ditch 5 is provided with a plurality of geotechnical cloth 13 for filtering and blocking in a segmented way, the ring tower body of the overflow tower 6 is provided with a grid for fixing the geotechnical cloth for filtering and blocking 9, a water return tank is arranged outside a tailing pond at the downstream of the flood drainage system, and further the external drainage is clarified;
s8: setting a safety warning mark along the line of the flood drainage structure in the sand taking process, and strictly prohibiting mechanical and transportation equipment from crossing; sand pit drainage pit 5, drain pipe 7, diversion well 8 and buffer pool 11 peripheral are protected along 15m scope, adopt manual exploitation, squirt stope to get sand operation, and overflow tower 6 periphery gets sand side slope ratio according to 1:4, a step of;
s9: in the operation process of the stoping I area and the stoping II area, protective work is carried out on the stoping III area, and the total slope ratio of sand taking slopes at the lap joint positions of the stoping I area, the stoping II area and the stoping III area is more than or equal to 1:5, determining the height of the side slope steps according to actual conditions; the invention requires the horizontal safe distance between the newly built factory building and auxiliary facility structures of the reservoir region and the sand production side slope to be more than or equal to 40m in the practical application of a certain ferrous metal mine tailing pond for safety.
The dry type stoping method for the tailing pond is applied to the stoping engineering of a large-scale ferrous metallurgy mine, adopts strip-shaped tailing pond tailing dry stoping to carry out stoping on the tailing pond of an original closed pond, solves the problem that part of tailing is too high in moisture content and not dried in stoping process by airing the tailing in a sand taking strip, greatly improves the transportation efficiency of the tailing pond by arranging a sand taking channel 2 along the sand taking strip 1, solves the floor occupation problem of a newly built factory building and other auxiliary facilities by building a brick factory building on the stable tailing surface in the tailing pond, saves the economic consumption of the tailing pond for taking sand and making bricks, and improves the economic benefit of the tailing brick.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (5)
1. The dry type stoping method for the tailing pond is characterized by comprising a stoping I area, a stoping II area and a stoping III area which is stoped finally, wherein the stoping areas and blocks adopt a sand taking strip (1), a sand taking channel (2), an in-pond transportation road (3) and a sand pit drainage pit (5) and adopt the following technical scheme to take a sand pin pond; the method comprises the following specific steps:
s1: in the extraction process of the tailing pond, the plane width of the sand taking strip (1) is 20m, the vertical layering thickness is 1.5m, and the pit slope ratio is 1:4, slope placing and sand taking;
s2: the width of the top of the sand-taking channel (2) is 5.0m, the channel adopts broken stone soil compaction, and the slope ratio of two sides of the channel is 1:2;
s3: in the sand taking process, tightly forbidding formation of a tailing pile or stacking of other materials within a range of 20m in front of a tailing dam and 10m around the top of a tailing pit;
s4: the stope I area is more dug than the stope II area by one layer and is used for forming a flood regulating reservoir capacity;
s5: the surface of the stope I area always inclines towards the direction in the warehouse more than or equal to 1 percent; the surface of the stope II area always inclines towards the drainage ditch more than or equal to 3 per mill, so as to ensure the surface drying in the sand taking process;
s6: taking sand strip by strip on the plane of the stoping I area from east to west, and taking sand on the plane of the stoping II area according to the sequence of stoping II area A block, stoping II area B block, stoping II area C block and stoping II area D block;
s7: before stoping, a buffer pool (11) is excavated around an overflow tower (6), and a sand pit drainage ditch (5) is excavated in the stoping process to be communicated with the buffer pool (11), so that water seepage and rainwater are clarified and leaked through the buffer pool (11); the sand pit drainage ditch (5) is provided with a plurality of geotechnical cloth (13) for filtering and blocking in a segmented way, the ring tower body of the overflow tower (6) is provided with a grid-fixed geotechnical cloth filtering and blocking (9), and a water return tank is arranged outside a tailing pond at the downstream of the flood drainage system;
s8: the safety warning marks are arranged along the line of the flood drainage structure in the sand taking process, the sand pit water guiding and draining pit (5), the drain pipe (7), the diversion well (8) and the periphery of the buffer pool (11) are protected along the 15m range, manual mining and water gun stoping are adopted for sand taking operation, and the sand side slope ratio of the periphery of the overflow tower (6) is 1:4, a step of;
s9: in the operation process of the stoping I area and the stoping II area, protective work is carried out on the stoping III area, and the total slope ratio of sand taking slopes at the lap joint positions of the stoping I area, the stoping II area and the stoping III area is more than or equal to 1:5, determining the height of the side slope steps according to actual conditions; and carrying out sedimentation and displacement monitoring on the structures in the stoping III region in the stoping process, and determining the thickness of the horizontal tailings pile-up body, the stratum stress diffusion angle and the horizontal conduction distance of the basic stress in the tailings pile-up body under the newly-built factory building and auxiliary facilities in the reservoir region.
2. A tailings pond dry recovery process in accordance with claim 1 wherein: the sand taking range in the warehouse is divided into a stoping I area, a stoping II area and a stoping III area, wherein the stoping II area is further divided into a stoping II area A block, a stoping II area B block, a stoping II area C block and a stoping II area D block, the stoping III area is a brickyard factory building and auxiliary facility arrangement area, after the stoping I area and the stoping II area finish stoping, the stoping III area is dry-type layer by layer, and the factory building and auxiliary facilities are removed.
3. A tailings pond dry recovery process in accordance with claim 1 wherein: the specific method in S6 is as follows:
s601: firstly, stoping the stoping I area to the beach face to two stoping layers in the vertical direction, and stoping the stoping I area to the No. 3 stoping layer, wherein the stoping I area and the stoping II area keep the height difference of two stoping heights;
s602: a layer is stoped in the vertical direction on a stoping zone II according to the sequence of the block A, the block B, the block C and the block D, and a stoping height difference is kept between the stoping zone I and the stoping zone II;
s603: the stoping zone I stopes one stoping layer with stoping height in the vertical direction until the stoping zone I zone 3 is a stoping layer, and the stoping zone I and the stoping zone II keep the height difference of the two stoping heights at the moment;
s604: and (3) stoping one layer in the vertical direction on the stoping zone II according to the sequence of the block A, the block B, the block C and the block D, wherein the stoping zone I and the stoping zone II keep a height difference … … of stoping height until the stoping reaches the original ground surface of the bottom of the warehouse.
4. A tailings pond dry recovery process in accordance with claim 1 wherein: the horizontal safety distance between the newly built factory building and the auxiliary facility structures in the warehouse area and the sand-collecting side slope is more than or equal to 40m.
5. The dry extraction method of tailings pond according to claim 2, wherein the sand taking plane generally covers the area surrounded by the initial dam and the pond edge, and the vertical direction generally covers the current beach to the original surface of the bottom of the pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013830.7A CN116025360A (en) | 2023-01-05 | 2023-01-05 | Dry type stoping method for tailing pond |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013830.7A CN116025360A (en) | 2023-01-05 | 2023-01-05 | Dry type stoping method for tailing pond |
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| Publication Number | Publication Date |
|---|---|
| CN116025360A true CN116025360A (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310013830.7A Pending CN116025360A (en) | 2023-01-05 | 2023-01-05 | Dry type stoping method for tailing pond |
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| Country | Link |
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- 2023-01-05 CN CN202310013830.7A patent/CN116025360A/en active Pending
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