CN210497613U - Floating cover semi-closed anti-seepage system in operation period of wet stack of tailing pond - Google Patents
Floating cover semi-closed anti-seepage system in operation period of wet stack of tailing pond Download PDFInfo
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- CN210497613U CN210497613U CN201921340350.7U CN201921340350U CN210497613U CN 210497613 U CN210497613 U CN 210497613U CN 201921340350 U CN201921340350 U CN 201921340350U CN 210497613 U CN210497613 U CN 210497613U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
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Abstract
The utility model discloses a tailing storehouse wet heap operation period floats half closed prevention of seepage system of lid, including the tailing pond, the anchor ditch has been seted up to the bank in tailing pond, tailing pond bottom has been laid and has been prevented osmosis membrane one, prevention osmosis membrane one top is provided with prevention osmosis membrane two, prevention osmosis membrane two with prevention osmosis membrane edge all is fixed in the anchor ditch, just the inlet has been seted up on the prevention osmosis membrane two, the air guide net has been laid to prevention osmosis membrane bottom, the air guide is provided with floating system on the net, floating system including evenly distributed in the last floater of air guide net with set up in the support gasbag at air guide net middle part, many gravity pressure pipes have been laid to prevention osmosis membrane two tops, the filling has the weight material in the gravity pressure pipe. A flexible floating cover anti-seepage system is constructed by utilizing the anti-seepage film, the floating system, the air guide net and the gravity pressure pipe, so that the peripheral environment is protected in the operation period, and the effect of preventing leakage is achieved.
Description
Technical Field
The utility model relates to a tailing field of handling specifically is a tailing storehouse wet heap operation period floating cover semi-closed prevention of seepage system.
Background
With the continuous acceleration of the social development process, the national demand for mineral resources is increasing. Under the condition of national mineral resource rapid mining, various mining production enterprises generate a large amount of tailing slag liquid through stages of mining and selecting, flotation, smelting and the like, and the most common mode for disposing the tailing slag liquid is to construct a tailing pond.
At present, the domestically designed tailings pond is constructed in a bottom seepage prevention and sealing seepage prevention mode, namely the field bottom seepage prevention of the tailings pond is completed in the construction period, and the field sealing seepage prevention is performed after the tailings pond is fully piled up to the storage capacity (the service life is reached). Therefore, in the operation period, the tailings pond of the wet storage yard basically does not adopt any environment-friendly anti-seepage measures, the tailings are directly exposed outside and directly contact with air and atmospheric precipitation, and a large amount of rainwater is deposited in the tailings pond under the condition of heavy rain, so that the heavy metal percolate is finally formed and discharged.
Most tailing ponds in the operation period of the domestic tailing pond are operated in an open-air stockpiling mode, and a large amount of heavy metal tailing liquid is conveyed to the tailing ponds for stockpiling after being produced by enterprises. The existing tailings pond basically does not adopt top anti-seepage measures (stable transportation in a wet storage yard, unsuitable for temporary anti-seepage). The operation mode of open-air stockpiling has the following disadvantages: the heavy metal pollution source is exposed on the ground surface and directly contacts with air and atmospheric precipitation to generate a large amount of percolate and waste gas, and has serious environmental pollution risk to the surrounding environment.
In order to overcome the current situation that the existing tailing pond (wet storage yard) can not isolate pollutants on the surface of tailings in the operation period, the floating cover anti-seepage system for the tailing pond is provided, an anti-seepage space can be reserved in the early stage of building the tailing pond, wet tailing slag is directly discharged into the anti-seepage system through a pipeline, the direct contact between the pollutants and a medium is isolated, and the ecological safety of the tailing pond in the operation period is guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tailing storehouse is with floating cover anti-seepage system can just reserve the prevention of seepage space in earlier stage building the tailing storehouse, directly emits into the anti-seepage system with wet body tailing sediment through the pipeline, has completely cut off the direct contact of pollutant with the medium, has ensured the ecological safety in tailing storehouse in the operation period. A flexible floating cover anti-seepage system is constructed by utilizing the anti-seepage film, the floating system, the air guide net and the gravity pressure pipe, so that the peripheral environment is protected in the operation period, and the effect of preventing leakage is achieved.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a tailing storehouse wet heap operation period floats lid semi-closed prevention of seepage system, includes the tailing pond, the anchor ditch has been seted up on the bank of tailing pond, prevention of seepage membrane one has been laid to tailing pond bottom, prevention of seepage membrane one top is provided with prevention of seepage membrane two, prevention of seepage membrane two with prevention of seepage membrane one edge all is fixed in the anchor ditch, just the inlet has been seted up on the prevention of seepage membrane two, prevention of seepage membrane bottom has been laid and has been led the air network, be provided with floating system on the air network, floating system including evenly distributed in lead the last floater of air network with set up in lead the support gasbag at air network middle part, it presses the pipe to have laid many gravity on prevention of seepage membrane two tops, the intraductal filling of gravity presses has the weight material.
Preferably, the anchoring ditch is filled with clay, and the second impermeable membrane are embedded and fixed in the anchoring ditch.
Preferably, a concrete pier is further embedded in the anchoring ditch, and a railing is vertically inserted into the concrete pier.
Preferably, the supporting airbag is in a long strip shape, the supporting airbag is longitudinally arranged in the middle of the air guide net, and two ends of the supporting airbag are fixed in the anchoring groove through chains.
Preferably, the air guide net comprises an air guide main pipe and air guide branch pipes, the air guide main pipe is arranged at the two edges of the anti-seepage film in a circle, the air guide branch pipes are distributed in the circle surrounded by the air guide main pipe in a net shape, the air guide branch pipes are communicated with the air guide main pipe, and the air guide main pipe is connected with an exhaust pump.
Preferably, the air guide main pipe and the air guide branch pipe are both attached to the two bottoms of the impermeable membrane.
Preferably, the air guide branch pipe is provided with a fine hole.
Preferably, the weight material is gravel.
Preferably, the bottom of the tailing pond is embedded with a leakage detection pipe and
the underground water is drained back and forth.
Preferably, a detection well is arranged on the bank beside the tailing pond, and the leakage detection pipe and the underground water inverted drainage pipe are communicated with the detection well.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
1. the utility model discloses an utilize prevention of seepage membrane and support gasbag to constitute and to construct a flexible floating cover prevention of seepage system, play the protection all ring edge borders from this in the operation period, play the effect that prevents the leakage.
2. The utility model discloses an arrange the air guide net in prevention of seepage membrane two belows, realize in time deriving the harmful gas who produces the sediment liquid in tailing pond and carry out centralized processing, prevent directly to leak to the atmosphere in.
Drawings
FIG. 1 is a schematic sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the utility model at A;
FIG. 3 is an enlarged schematic view of the utility model at B;
fig. 4 is an enlarged schematic view of the utility model at the position C;
FIG. 5 is a schematic view of the structure of the air guide net of the present invention;
fig. 6 is a schematic view of the structure of the support airbag of the present invention.
Reference numerals: 1. the mine tailing pond, 2, prevention of seepage membrane one, 3, prevention of seepage membrane two, 4, anchor ditch, 5, the air guide is responsible for, 6, the air guide branch pipe, 7, the gravity presses the pipe, 8, the exhaust duct, 9, support gasbag, 10, floater, 11, inspection shaft, 12, seepage detection pipe, 13, the groundwater fall-over pipe, 14, the chain, 15, tee junction spare, 16, cross-connection spare, 17, concrete mound, 18, railing, 19, clay, 20, the slag liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The floating cover semi-closed anti-seepage system in the wet stack operation period of the tailing pond shown in the combined drawings of fig. 1-6 comprises a tailing pond 11, wherein an anchoring ditch 4 is formed in the side bank of the tailing pond 11, so that the anchoring ditch 4 surrounds the tailing pond 11 to form a ring, a good sealing effect is achieved on the tailing pond 11 after a first anti-seepage film 2 and a second anti-seepage film 3 are fixed, the first anti-seepage film 2 and the second anti-seepage film 3 are mainly made of LDPE films or HDPE films, the LDPE films are preferred materials, the LDPE geomembrane takes low-density polyethylene as a base material, and has better tensile force and flexibility compared with HDPE geomembrane, and the anti-seepage material is a newer generation of geotechnical anti-seepage material. The anti-seepage material for the soil engineering formed by bonding the LDPE geomembrane and the geotextile has the characteristics of corrosion resistance, low temperature resistance, light weight, strong anti-tearing capability and the like, also has the characteristics of low manufacturing cost, high quality and low price, and is very suitable for the position, a first anti-seepage membrane 2 is paved at the bottom of the tailing pond 11, a second anti-seepage membrane 3 is arranged above the first anti-seepage membrane 2, the edges of the second anti-seepage membrane 3 and the first anti-seepage membrane 2 are fixed in an anchoring ditch 4, a liquid inlet is formed in the second anti-seepage membrane 3, slag liquid 20 is discharged into a space between the first anti-seepage membrane 2 and the second anti-seepage membrane 3 from the liquid inlet through a pipeline, the second anti-seepage membrane 3 floats upwards along with the driving of a floating system along with more and more slag liquid 20, so that the second anti-seepage membrane 3 always floats on the liquid surface to effectively prevent the liquid from seeping out or volatilizes and spreads to the atmosphere, an air guide net is paved at the bottom, the existence of the second impermeable membrane 3 can ensure that the gas cannot seep out in a large amount to a certain degree, but if the gas is not processed and led out in time, the gas can reach a bearing limit and cause greater harm, so the gas volatilized by the slag liquid 20 can be led out in time through the gas guide net, the gas guide net is provided with a floating system, the floating system comprises floaters 10 uniformly distributed on the gas guide net and a supporting air bag 9 arranged in the middle of the gas guide net, a plurality of gravity pressure pipes 7 are laid above the second impermeable membrane 3, the gravity pressure pipes 7 are filled with weight increasing materials, the second impermeable membrane 3 can be always pressed on the liquid level through the gravity pressure pipes 7, the possibility that the second impermeable membrane 3 is separated from the liquid level and even damaged due to other factors, such as wind blowing and the like, the anchoring ditch 4 is filled with clay 19, and the edges of the second impermeable membrane 3 and the second impermeable membrane 3 are both embedded and fixed in the anchoring ditch 4,
preferably, a concrete pier 17 is further embedded in the anchoring ditch 4, a railing 18 is vertically inserted into the concrete pier 17 to prevent non-workers from freely approaching and avoid dangerous events
Preferably, the supporting airbag 9 is in a long strip shape, the supporting airbag 9 is longitudinally arranged in the middle of the air guide net, two ends of the supporting airbag 9 are fixed in the anchoring groove 4 through chains 14 to prevent the supporting airbag 9 from moving away, so that the supporting airbag is always positioned in the middle of the air guide net, the supporting airbag 9 plays a supporting role on the whole, the floating height of the supporting airbag 9 is higher than that of the floater 10, the middle of the air guide net and the middle of the impermeable membrane II 3 are raised, the volatile gas of the slag liquid 20 can be gradually concentrated at the raised part so that the air guide net can discharge the gas, the floater 10 plays an auxiliary supporting role, the whole floats uniformly, and the floater 10 is a sealed empty barrel made of foam into a solid block or made of HDPE material.
Preferably, the air guide net comprises an air guide main pipe 5 and air guide branch pipes 6, the air guide main pipe 5 is arranged at the edge of the impermeable membrane II 3 in a circle, the air guide branch pipes 6 are distributed in the circle surrounded by the air guide main pipe 5 in a net shape, the air guide branch pipes 6 are made of plastics or other materials with better toughness, have good flexibility and are bent to a certain extent along with the impermeable membrane II 3, the air guide branch pipes 6 are mutually connected through a four-way connecting piece 16 to form a net shape, and the air guide branch pipes 6 are connected with the air guide main pipe 5 through a three-way connecting piece 15, so that the gas in the tailing pond 11 is uniformly discharged, the air guide branch pipes 6 are communicated with the air guide main pipe 5, the air guide main pipe 5 is connected with an exhaust pump through an exhaust pipeline 8, the exhaust pump discharges the gas into a collecting container for other purposes or discharges the gas into the atmosphere after harmless treatment, the gas guide branch pipe 6 has certain floating capacity, the gas guide branch pipe 6 can float in the tailing pond 11 under the action of the floater 10 and the supporting air bag 9, and the part of the gas guide branch pipe 6 on the liquid surface can pump out the volatile gas of the slag liquid 20 under the action of the suction pump (because the area of the gas guide net is large, the pumping effect of the suction pump cannot be large, the gas can be continuously discharged, and the slag liquid 20 can be effectively prevented from being pumped out).
Preferably, the air guide main pipe 5 and the air guide branch pipe 6 are both attached to the bottom of the impermeable membrane II 3. The air guide net moves along with the impermeable membrane II 3, and a small part of the air guide net is always kept on the liquid level (under the action of the floater 10 and the supporting air bag 9).
Preferably, the gas guide branch pipe 6 is provided with a fine hole, and gas flows into the gas guide net from the fine hole.
Preferably, the seepage detection pipe 12 and the groundwater pipe 13 of falling are buried underground to tailing pond 11 bottom, detecting well 11 has been seted up to 11 bank of sides in tailing pond one department, seepage detection pipe 12 and groundwater pipe 13 of falling all with detecting well 11 intercommunication, the liquid in seepage detection pipe 12 and the groundwater pipe 13 of falling flows into detecting well 11, can realize monitoring the pollution condition in 11 seepage condition in tailing pond and 11 below lands in tailing pond through the inspection to the well liquid composition of detecting well 11 to guarantee that tailing pond 11 produces the pollution condition in controllable within range, the appearance condition is convenient for in time to restore.
In this embodiment one the weight material is the grit, and the grit is with low costs, and can provide suitable gravity, and the pressure that gravity pressed the pipe 7 to provide is adjusted and control to the grit quantity in the pipe 7 is pressed in the accessible regulation and is irritated to the gravity.
The utility model discloses an innovation point lies in: the floating cover anti-seepage system for the tailing pond is provided, an anti-seepage space can be reserved at the early stage of building the tailing pond, wet tailing slag is directly discharged into the anti-seepage system through a pipeline, direct contact between pollutants and media is isolated, and ecological safety of the tailing pond in the operation period is guaranteed. A flexible floating cover anti-seepage system is constructed by utilizing the anti-seepage film, the floating system, the air guide net and the gravity pressure pipe 7, so that the surrounding environment is protected in the operation period, and the effect of preventing leakage is achieved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a tailing storehouse wet heap operation period floating cover semi-closed prevention of seepage system which characterized in that: including the tailing pond, the anchor ditch has been seted up on the bank in tailing pond, prevention of seepage membrane one has been laid to tailing pond bottom, prevention of seepage membrane one top is provided with prevention of seepage membrane two, prevention of seepage membrane two with prevention of seepage membrane one edge all is fixed in the anchor ditch, just the inlet has been seted up on the prevention of seepage membrane two, the air guide net has been laid to prevention of seepage membrane bottom, be provided with floating system on the air guide net, floating system including evenly distributed in the last floater of air guide net with set up in the support gasbag at air guide net middle part, many gravity pressure pipes have been laid to prevention of seepage membrane two tops, the intraductal filling of gravity pressure has the weight material.
2. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: and clay is filled in the anchoring ditch, and the second anti-seepage film are embedded and fixed in the anchoring ditch.
3. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: concrete piers are further embedded in the anchoring ditch, and railings are vertically inserted into the concrete piers.
4. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: the supporting air bag is in a long strip shape, the supporting air bag is longitudinally arranged in the middle of the air guide net, and two ends of the supporting air bag are fixed in the anchoring ditch through chains.
5. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: the air guide net comprises an air guide main pipe and air guide branch pipes, the air guide main pipe is arranged at the two edges of the anti-seepage film in a surrounding mode, the air guide branch pipes are distributed in the surrounding mode of the air guide main pipe in a net shape, the air guide branch pipes are communicated with the air guide main pipe, and the air guide main pipe is connected with an exhaust pump.
6. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 5, wherein: the air guide main pipe and the air guide branch pipes are both attached to the bottoms of the two anti-seepage films.
7. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 6, wherein: the air guide branch pipe is provided with a fine hole.
8. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: the weighting material is gravel.
9. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 1, wherein: and a leakage detection pipe and an underground water inverted drainage pipe are buried at the bottom of the tailing pond.
10. The floating cover semi-closed anti-seepage system for the operation period of the wet pile of the tailings pond as claimed in claim 9, wherein: a detection well is arranged on the bank beside the tailing pond, and the leakage detection pipe and the underground water inverted discharge pipe are communicated with the detection well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921340350.7U CN210497613U (en) | 2019-08-19 | 2019-08-19 | Floating cover semi-closed anti-seepage system in operation period of wet stack of tailing pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921340350.7U CN210497613U (en) | 2019-08-19 | 2019-08-19 | Floating cover semi-closed anti-seepage system in operation period of wet stack of tailing pond |
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| CN210497613U true CN210497613U (en) | 2020-05-12 |
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| CN201921340350.7U Active CN210497613U (en) | 2019-08-19 | 2019-08-19 | Floating cover semi-closed anti-seepage system in operation period of wet stack of tailing pond |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114846964A (en) * | 2022-06-09 | 2022-08-05 | 中钢集团马鞍山矿山研究总院股份有限公司 | Device and method for closed-pit reclamation of large pit-type tailing pond |
-
2019
- 2019-08-19 CN CN201921340350.7U patent/CN210497613U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114846964A (en) * | 2022-06-09 | 2022-08-05 | 中钢集团马鞍山矿山研究总院股份有限公司 | Device and method for closed-pit reclamation of large pit-type tailing pond |
| CN114846964B (en) * | 2022-06-09 | 2023-10-20 | 中钢集团马鞍山矿山研究总院股份有限公司 | Method for reclamation of closed tailings pond of large pit type |
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