CN116837925A - Large pit type tailing pond closed-pond reclamation method - Google Patents
Large pit type tailing pond closed-pond reclamation method Download PDFInfo
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- CN116837925A CN116837925A CN202310827284.0A CN202310827284A CN116837925A CN 116837925 A CN116837925 A CN 116837925A CN 202310827284 A CN202310827284 A CN 202310827284A CN 116837925 A CN116837925 A CN 116837925A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000002002 slurry Substances 0.000 claims abstract description 143
- 238000007599 discharging Methods 0.000 claims abstract description 65
- 239000002689 soil Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims abstract description 23
- 238000007667 floating Methods 0.000 claims abstract description 18
- 239000011268 mixed slurry Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229920001903 high density polyethylene Polymers 0.000 claims description 2
- 239000004700 high-density polyethylene Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000007596 consolidation process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008520 organization Effects 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/22—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling
- E02F5/223—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling for back-filling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
The invention discloses a large pit type tailing pond closed-pond reclamation method, which comprises the following steps that a slurry discharging backfill device (6) is formed by combining a slurry discharging pipeline and a plurality of floating and sinking cylinders, the floating and sinking cylinders are bound at two ends of the slurry discharging pipeline and stably suspend on the water surface in the pit type tailing pond, and slurry discharging holes are formed below the slurry discharging pipeline. Adding a set amount of backfill soil, water and plant seeds into the slurry mixing tank (1) for stirring, then conveying the mixed slurry to a slurry discharging pipeline (8) of a slurry discharging backfill device (6) through a slurry conveying pipeline (3) through a slurry air pump (10), and discharging the slurry through a slurry discharging hole (11), thereby covering soil on a certain partition of the upper tailing pot hole of the pit type tailing pond needing backfilling. The invention is applied to the closed-reservoir reclamation of the large pit type tailing pond, and realizes the earthing with low cost, simple construction and short age while ensuring the closed-reservoir process of the large pit type tailing pond and meeting the requirements of safety and environmental protection after final reclamation.
Description
Technical Field
The invention belongs to the technical field of pit type tailing pond closed reclamation engineering, in particular to a method for reclaiming the tailing pond with the storage capacity of more than 1000 ten thousand meters 3 Is used as a closed-reservoir reclamation method of a tailing pond.
Background
The tailing pond is one of three control projects of mines, is an important production facility of mine enterprises, is mainly used for storing tailings or other industrial waste residues discharged after metal and nonmetal mines are subjected to ore sorting, and is one of necessary facilities for maintaining normal production of the mines. The tailings pond which is operated to the design final elevation or no longer carries out tail discharging operation should be subjected to pond closing treatment, and the contents of the pond closing comprise the treatment of the beach surface of the tailings pond. The beach face is to prevent the tailing pond beach face after closing the storehouse from weathering, produces the raise dust and causes environmental pollution, and the main engineering is to carry out earthing at tailing pond beach face to plant the vegetation.
The tailing pond types mainly comprise a valley type tailing pond, a mountain side tailing pond, a land-leveling tailing pond and a river-cutting tailing pond. Under normal conditions, in the process of closing the beach surface of the tailing pond, accumulated water in the pond is discharged, and after the beach surface has enough bearing capacity, the construction vehicle is used for transporting the surrounding soil into the pond to carry out beach surface earthing greening. In recent years, in order to realize comprehensive treatment after sealing the surface mine, the problems of lack of land resources, low actual utilization rate and the like can be solved by using the surface mine pit as a tailing discharge place due to the fact that the surface mine pit has the advantages of large storage capacity, no need of manual dam building, low cost, simple construction, short age and the like.
The pit is used as a tailing discharging place, the structural characteristics of a huge concave space determine that the pit type tailing pond is different from a common tailing pond, the pit type tailing pond is mainly characterized in that no dry beach exists in the pit type tailing pond, and tailing water can completely cover all tailings, so that after the pit type tailing pond stops discharging tailings, if a conventional tailing pond closing reclamation mode (namely, the upper water is completely extracted, and after the beach surface is consolidated to have bearing capacity, surrounding soil is conveyed by a vehicle for earthing greening) is adopted for closing the pit type tailing pond, the following problems are encountered: (1) long closing period: the vehicle transportation earthing needs the beach to possess certain bearing capacity, and pit type tailing storehouse beach is submerged all the year round, if need to reach the beach bearing capacity and satisfy the vehicle requirement of traveling and need to carry out drainage consolidation, wait that storehouse beach exposes natural wind and sun after taking out in the storehouse water is whole, this process needs very long life. (2) uneven soil covering: the earth squeezing effect is easy to generate when the earth is transported in the vehicle warehouse, so that the earth is covered unevenly on the beach surface, and the earth is uneven. (3) serious environmental pollution: the traditional tailing pond closing mode adopts vehicles to convey surrounding soil, and due to the large engineering quantity, a large amount of tail gas is generated when the transportation vehicles complete the pond closing work, and serious adverse effects are caused to the atmosphere. (4) the safety of the disposal mode is low: the drainage consolidation period of tail sand in the open pit is longer, the consolidation effect cannot be guaranteed, and when the consolidation effect of partial areas is weaker, the problems that the vehicle is easy to damage and equipment overturn are easily caused by adopting the vehicle for transporting and earthing are solved. (5) construction organization management difficulty: the pit type tailing pond adopts the vehicles to cover soil, close the pond, the required personnel and engineering vehicles for reclamation are more, and the on-site construction organization management is difficult. Based on the method, the invention provides a large pit type tailing pond closed-reservoir reclamation method.
Disclosure of Invention
The invention aims to provide a large pit type tailing pond closing reclamation method which meets the requirements of safety and environmental protection, has lower manufacturing cost, is simple and easy to construct and has short age, and aims at overcoming the defects of long closing period, uneven soil covering, easy environmental pollution, safety problem, difficult construction organization and the like in the prior art.
In order to achieve the purpose of the invention, the invention relates to a large pit type tailing pond closed-pond reclamation method which is implemented by adopting the following technical scheme:
1) Dividing the size and shape of the pit mouth of the upper tailings in the pit type tailings pond to be backfilled into a plurality of subareas according to the requirement: one, two, three partition.
2) According to the geographical environment around the pit type tailing pond, traffic transportation, line erection and distance from the tailing pit, a slurry mixing tank and a slurry stacking groove are built at proper positions, the slurry mixing tank and the slurry stacking groove are connected through a pipeline, and a slurry air pump for conveying slurry is arranged in the slurry stacking groove; the outlet of the slurry air pump is connected with a slurry conveying pipeline paved to a certain area of the pit mouth of the upper tailings of the pit type tailings pond;
3) Transversely arranging a slurry discharging backfilling device on the water surface of a certain partition of the pit mouth of the upper tailings of the pit type tailings pond to be backfilled;
the slurry discharging backfill device is composed of a slurry discharging pipeline and a plurality of floating and sinking cylinders, wherein the floating and sinking cylinders are bound at two ends of the slurry discharging pipeline and stably suspended on the water surface in the pit type tailing pond; one end of the slurry discharge pipeline is connected with an outlet of the slurry conveying pipeline, the other end of the slurry discharge pipeline is a blind pipe, and a slurry discharge hole is arranged below the slurry discharge pipeline;
4) A winch/blower device or a remote controller for controlling the slurry discharging and backfilling device to move is correspondingly arranged at the side edge of the upper tailing pot mouth of the pit type tailing pond; the winch/blower equipment is provided with steel wire chain ropes, and each steel wire chain rope is detachably assembled and connected with a floating and sinking cylinder correspondingly arranged at one end of the slurry discharging pipeline;
when the remote controller is adopted, the intelligent driving mechanism is correspondingly arranged on the slurry discharging and backfilling device, and the slurry discharging and backfilling device is controlled to move on the water surface in the pit type tailing pond by the remote controller.
5) Adding a set amount of backfill soil, water and plant seeds into a slurry mixing pool for stirring to prepare mixed slurry, conveying the mixed slurry into a slurry discharge pipeline of a slurry discharge backfill device through a slurry conveying pipeline by a slurry pump for conveying the slurry, discharging the mixed slurry through a slurry discharge hole, and controlling the slurry discharge backfill device to repeatedly move at a constant speed on the water surface of a certain partition by a winch/blower device so as to perform in-situ earthing on a certain partition of a tailing pot hole at the upper part of a pit type tailing pond needing backfill;
6) When the soil covering thickness of a certain partition meets the reclamation requirement, the slurry discharging backfilling device is moved to the next partition for soil covering until the soil covering of all the partitions is completed.
Preferably, the slurry conveying pipeline and the slurry discharging pipeline are fixedly connected through a plug-in type straight two-way joint.
Preferably, the floating and sinking cylinders at the two ends of the slurry discharging pipeline are the same in number and opposite in position, so that the slurry discharging pipeline is stably suspended on the water surface of the pit type tailing pond.
Preferably, the aperture of the pulp discharging holes is 0.8cm-1.2cm, and the pulp discharging holes are sequentially arranged below the pulp discharging pipeline at equal intervals.
Preferably, the mass concentration of the mixing slurry is 60-70%.
Preferably, the thickness of the covering soil is 20cm-50cm.
Preferably, each partition has a width of 6m-15m.
Preferably, the floating and sinking cylinder is made of high-density polyethylene or polyester synthetic material.
When the length of the slurry discharging pipeline is too large, the slurry discharging pipeline is formed by connecting a plurality of pipelines with shorter lengths into a whole through L-shaped two-way threaded connectors.
Further, the thickness of the covering soil is 20cm-30cm; the mass concentration of the mixing slurry is 65-70%, wherein the mass ratio of the plant seeds in the mixing slurry is 1-5%; each partition has a width of 6m-10m.
After the technical scheme is adopted by the large pit type tailing pond closing reclamation method, the method has the following positive effects:
(1) The slurry discharging backfilling device disclosed by the invention has the advantages that the slurry discharging pipeline floats on the water surface of the pit type tailing pond by utilizing the buoyancy of water, the winch/blower equipment is adopted to assist the winding and unwinding of the steel wire chain, the slurry discharging backfilling device is controlled to repeatedly move at a uniform speed on the water surface, the mixed cementing slurry is conveyed into the slurry discharging pipeline through the slurry conveying pipeline and is discharged through the slurry discharging holes arranged in the slurry discharging pipeline, the soil covering is carried out, the soil squeezing effect generated in the vehicle soil covering process in the prior art is effectively avoided, the soil covering is uniform, the beach surface is flat, and the soil covering effect is good.
(2) The invention adopts an in-situ earthing mode to directly cover the beach surface of the tailing pit on the water surface, saves the drainage consolidation time of the tailing in the earlier stage, greatly shortens the reclamation operation age of the closed-reservoir, reduces the investment of a large amount of manpower and vehicles, and has the advantages of low manufacturing cost, simple project engineering organization management and the like.
(3) According to the invention, the winch/blower equipment and the steel wire chain are used for driving the slurry discharging and backfilling device to cover soil, so that the whole process of closed-warehouse reclamation is more green and low-carbon, and the process is more environment-friendly.
(4) The invention omits the process of earthing the transport vehicle in the pit, and effectively avoids accidents such as vehicle damage, equipment overturning and the like in the pit.
(5) The whole process is carried out in a wet environment, so that dust emission is effectively avoided, and the environment is protected; the invention is applied to the closed-reservoir reclamation of the large pit type tailing pond, and realizes the earthing with low cost, simple construction and short age while ensuring the closed-reservoir process of the large pit type tailing pond and meeting the requirements of safety and environmental protection after final reclamation.
Drawings
FIG. 1 is a schematic diagram of a system layout structure of a design of a large pit type tailing pond closed-reservoir reclamation method of the present invention;
FIG. 2 is a schematic structural view of a slurry discharging backfill device used in the method of the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
fig. 4 is a schematic structural diagram of a plug-in type two-way connector adopted in the method of the present invention.
The reference numerals are: 1-a slurry mixing tank; 2-a slurry stacking groove; 3-a slurry delivery pipe; 4-wire chain rope; 5-windlass/blower device; 6-slurry discharging backfilling device; 7-a floating and sinking cylinder; 8-a slurry discharge pipeline; 9-plug-in type straight two-way connector; 10-a slurry air pump; 11-pulp discharging holes; 12-L type two-way screw joint.
Detailed Description
For further description of the present invention, a method for reclamation of large pit tailings ponds will be described in further detail with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. 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.
The system layout structure schematic diagram of the design of the large pit type tailing pond closed-pond reclamation method shown in fig. 1 is combined with fig. 2 and 3 to show that the large pit type tailing pond closed-pond reclamation method is implemented by adopting the following technical scheme:
1) Dividing the size and shape of the pit mouth of the upper tailings in the pit type tailings pond to be backfilled into a plurality of subareas according to the requirement: one, two, three zones.
2) According to the geographical environment around the pit type tailing pond, traffic transportation, line erection and distance from the tailing pit, a slurry mixing tank 1 and a slurry stacking tank 2 are built at proper positions, the slurry mixing tank 1 and the slurry stacking tank 2 are connected through a pipeline, and a slurry air pump 10 for conveying slurry is arranged in the slurry stacking tank 2; the outlet of the slurry air pump 10 is connected with a slurry conveying pipeline 3 paved to a certain area of the upper tailing pot mouth of the pit type tailing pond.
3) And a slurry discharging and backfilling device 6 is transversely arranged on the water surface of a certain partition of the pit mouth of the upper tailings pond of the pit type tailings pond to be backfilled.
The slurry discharging backfilling device 6 is formed by combining a slurry discharging pipeline 8 and a plurality of floating and sinking cylinders 7, wherein the floating and sinking cylinders 7 are made of environment-friendly materials such as HMWPE (high molecular polyethylene), and the like, which is beneficial to prolonging the service life of the sedimentation cylinders 7 and reducing environmental pollution. The floating and sinking cylinders 7 are bound at the two ends of the slurry discharge pipeline 8, the plurality of sedimentation cylinders 7 are fixedly connected with the slurry discharge pipeline 8 through the steel reinforcement framework, the floating and sinking cylinders 7 at the two ends of the slurry discharge pipeline 8 are the same in number and opposite in position, and the slurry discharge pipeline 8 is stably suspended on the water surface of the pit type tailing pond by utilizing the buoyancy of water. One end of the slurry discharge pipeline 8 is fixedly connected with the outlet of the slurry conveying pipeline 3 through a plug-in type straight two-way joint 9, the other end of the slurry discharge pipeline 8 is a blind pipe, slurry discharge holes 11 are sequentially arranged at intervals below the slurry discharge pipeline 8, so that the mixed slurry is uniformly discharged, and the earthing uniformity is improved; the aperture of the pulp discharging hole 11 is 0.8cm-1.2cm.
4) A winch/blower device 5 or a remote controller for controlling the slurry discharging and backfilling device 6 to move is correspondingly arranged at the side edge of the upper tailing pot mouth of the pit type tailing pond; the windlass/blower 5 is provided with steel wire chain ropes 4, and each steel wire chain rope 4 is assembled and connected with a floating and sinking cylinder 7 correspondingly arranged at one end of a slurry discharging pipeline 8; the four windlass/blower devices 5 on two sides assist the winding and unwinding of the steel wire chain rope 4, and the slurry discharging backfilling device is controlled to repeatedly move at a constant speed on the water surface. The steel wire chain 4 is a metal product, has lighter weight, is convenient to be matched with the winch/blower equipment 5, has higher strength, can effectively drive the slurry discharging backfill device to move, and can improve the earthing efficiency.
5) Adding a set amount of backfill soil, water and plant seeds into the slurry mixing tank 1 for stirring to prepare mixing slurry, and then conveying the mixing slurry to a slurry discharge pipeline 8 of a slurry discharge backfill device 6 through a slurry conveying pipeline 3 by a slurry air pump 10 for conveying the slurry, which is arranged in a slurry stacking groove 2, and discharging the slurry through a slurry discharge hole 11, thereby covering soil on a certain partition of a tailing pot hole at the upper part of a pit type tailing pond needing backfilling. The thickness of the covering soil is 20cm-30cm, and the mass concentration of the mixed slurry is controlled to be 66-69%.
6) When the soil covering thickness of a certain partition meets the reclamation requirement, the slurry discharging backfilling device (6) is moved to the next partition for soil covering until the soil covering of all the partitions is completed.
The schematic structure of the plug-in type two-way joint adopted by the method of the invention shown in fig. 4 is combined with fig. 1, and when the length of the slurry discharging pipeline 8 is too large, the slurry discharging pipeline 8 is formed by connecting a plurality of pipelines with shorter length into a whole through the L-shaped two-way threaded joint 12.
The whole process of the closed-warehouse reclamation is more green and low-carbon, the process is more environment-friendly, the soil squeezing effect generated in the vehicle soil covering process in the prior art is effectively avoided, the soil covering is uniform, the beach surface is flat, and the soil covering effect is better; the invention adopts an in-situ earthing mode to directly cover the beach surface of the tailing pit on the water surface, saves the drainage consolidation time of the tailing in the earlier stage, greatly shortens the reclamation operation age of the closed-reservoir, reduces the investment of a large amount of manpower and vehicles, and has the advantages of low manufacturing cost, simple project engineering organization management and the like; the process of earthing the transport vehicle in the pit is omitted, and accidents such as vehicle damage and equipment overturning in the pit are effectively avoided; the whole process is carried out in a wet environment, so that dust emission is effectively avoided, and the environment is protected; the invention is applied to the closed-reservoir reclamation of the large pit type tailing pond, and realizes the earthing with low cost, simple construction and short age while ensuring the closed-reservoir process of the large pit type tailing pond and meeting the requirements of safety and environmental protection after final reclamation.
Claims (10)
1. A large pit type tailing pond closed-reservoir reclamation method is characterized by being implemented by adopting the following technical scheme:
1) Dividing the size and shape of the pit mouth of the upper tailings in the pit type tailings pond to be backfilled into a plurality of subareas according to the requirement: one, two, three partition.
2) According to the geographical environment around the pit type tailing pond, traffic transportation, line erection and distance from the tailing pit, a slurry mixing tank (1) and a slurry stacking groove (2) are built at proper positions, the slurry mixing tank (1) and the slurry stacking groove (2) are connected through a pipeline, and a slurry air pump (10) for conveying slurry is arranged in the slurry stacking groove (2); the outlet of the slurry air pump (10) is connected with a slurry conveying pipeline (3) paved to a certain area of the tailing pot mouth at the upper part of the pit type tailing pond;
3) Transversely arranging a slurry discharging backfilling device (6) on the water surface of a certain partition of the pit mouth of the upper tailings of the pit-type tailings pond to be backfilled;
the slurry discharging backfill device (6) is formed by combining a slurry discharging pipeline (8) and a plurality of floating and sinking cylinders (7), wherein the floating and sinking cylinders (7) are bound at two ends of the slurry discharging pipeline (8) and stably suspend on the water surface in the pit type tailing pond; one end of a slurry discharge pipeline (8) is connected with an outlet of the slurry conveying pipeline (3), the other end of the slurry discharge pipeline (8) is a blind pipe, and a slurry discharge hole (11) is arranged below the slurry discharge pipeline (8);
4) A winch/blower device (5) or a remote controller for controlling the slurry discharging and backfilling device (6) to move is correspondingly arranged at the side edge of the upper tailing pot mouth of the pit type tailing pond; the winch/blower equipment (5) is provided with steel wire chain ropes (4), and each steel wire chain rope (4) is assembled and connected with a floating and sinking cylinder (7) correspondingly arranged at one end of the slurry discharging pipeline (8);
5) Adding a set amount of backfill soil, water and plant seeds into a slurry mixing pool (1) for stirring to prepare mixed slurry, conveying the mixed slurry to a slurry discharge pipeline (8) of a slurry discharge backfilling device (6) through a slurry conveying pipeline (3) by a slurry air pump (10) for conveying the slurry, and discharging the mixed slurry through a slurry discharge hole (11), thereby covering a certain partition of a tailing pot hole at the upper part of a pit type tailing pond needing backfilling;
6) When the soil covering thickness of a certain partition meets the reclamation requirement, the slurry discharging backfilling device (6) is moved to the next partition for soil covering until the soil covering of all the partitions is completed.
2. The large pit type tailing pond closed reclamation method as recited in claim 1, wherein the method comprises the following steps: the slurry conveying pipeline (3) is fixedly connected with the slurry discharging pipeline (8) through a plug-in type straight two-way joint (9).
3. The large pit type tailing pond closed reclamation method as recited in claim 1, wherein the method comprises the following steps: the floating and sinking cylinders (7) at the two ends of the slurry discharge pipeline (8) are the same in number and opposite in position, so that the slurry discharge pipeline (8) is stably suspended on the water surface of the pit type tailing pond.
4. The large pit type tailing pond closed reclamation method as recited in claim 1, wherein the method comprises the following steps: the aperture of the pulp discharging holes (11) is 0.8cm-1.2cm, and the pulp discharging holes (11) are sequentially arranged below the pulp discharging pipeline (8) at equal intervals.
5. The large pit type tailing pond closed reclamation method as recited in claim 1, wherein the method comprises the following steps: the mass concentration of the mixing slurry is 60-70%.
6. The large pit type tailing pond closed reclamation method as recited in claim 1, wherein the method comprises the following steps: the thickness of the covering soil is 20cm-50cm.
7. The large pit type tailing pond closing reclamation method according to claim 1, 2, 3, 4, 5 or 6, wherein the method comprises the following steps: the width of each partition is 6m-15m.
8. The large pit type tailing pond closing reclamation method as recited in claim 7, wherein: the floating and sinking cylinder (7) is made of high-density polyethylene or polyester synthetic material.
9. The large pit type tailing pond closing reclamation method as recited in claim 8, wherein the steps of: the slurry discharging pipeline (8) is formed by connecting a plurality of pipelines with shorter lengths into a whole through an L-shaped two-way threaded joint (12).
10. The large pit type tailing pond closing reclamation method as recited in claim 8, wherein the steps of: the thickness of the covering soil is 20cm-30cm; the mass concentration of the mixing slurry is 65-70%, wherein the mass ratio of the plant seeds in the mixing slurry is 1-5%; each partition has a width of 6m-10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310827284.0A CN116837925A (en) | 2023-07-07 | 2023-07-07 | Large pit type tailing pond closed-pond reclamation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310827284.0A CN116837925A (en) | 2023-07-07 | 2023-07-07 | Large pit type tailing pond closed-pond reclamation method |
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| Publication Number | Publication Date |
|---|---|
| CN116837925A true CN116837925A (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310827284.0A Pending CN116837925A (en) | 2023-07-07 | 2023-07-07 | Large pit type tailing pond closed-pond reclamation method |
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| Country | Link |
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| CN (1) | CN116837925A (en) |
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2023
- 2023-07-07 CN CN202310827284.0A patent/CN116837925A/en active Pending
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