CN212248388U

CN212248388U - In-situ blocking structure, blocking system and liquid drainage system

Info

Publication number: CN212248388U
Application number: CN202020818600.XU
Authority: CN
Inventors: 璋蜂寒; 谷亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-12-29
Anticipated expiration: 2030-05-15

Abstract

The utility model relates to an impervious engineering technical field, especially an normal position separation structure, separation system and flowing back system, wherein normal position separation structure is including the first side wall and the second side wall that all are located the existing pending thing outside, the lower part of first side wall and the lower part sealing connection of second side wall, first side wall and/or second side wall slope setting, first side wall and/or second side wall include the barrier layer, the barrier layer includes the construction hole, the barrier layer is configured into: the anti-seepage layer is a layered structure formed by anti-seepage slurry poured or spun-sprayed at high pressure into the construction hole. According to the in-situ blocking structure, on the premise that an object to be treated is not bent, exchange of substances inside and outside an impermeable layer, particularly exchange of liquid-phase substances, can be effectively isolated, and the first side wall and/or the second side wall can prevent external water from entering the inside of the existing object to be treated and prevent the liquid-phase substances in the object to be treated from diffusing outside the first side wall and/or the second side wall.

Description

In-situ blocking structure, blocking system and liquid drainage system

Technical Field

The utility model relates to an prevention of seepage engineering technical field, especially a normal position separation structure, separation system and flowing back system.

Background

At present, the traditional mineral resource development and utilization generally consist of: prospecting, mining, transporting, ore dressing, smelting, treating tailings and waste residues, reclaiming and the like. The traditional mineral resource development modes have the defects of large investment, high labor intensity, high safety risk, serious environmental pollution, long time and the like. In addition, an in-situ leaching process is adopted for individual mines, compared with the conventional mineral processing process flow, the in-situ leaching process has the advantages of low cost, low safety and environmental risk, short time and the like, the application of the process is mainly influenced by the geological conditions of the mines, and the bottoms of a plurality of mines are not provided with natural or artificial impermeable structural layers, so that a few mine projects meeting the geological conditions are available, and the application of the in-situ leaching process is greatly limited.

On the other hand, the bottom of the existing tailings pond, especially a metal tailings pond, does not necessarily have a natural impermeable or weak impermeable geological structure layer, especially some tailings ponds built according to valleys (without artificial impermeable layers), and the bottom of the tailings pond has more or less fracture zones or underground water, for example, the tailings in the tailings pond of the type adopt: in the scheme of application No. CN201711251389.7, "an in-situ tailing leaching process and an in-situ tailing leaching system", the method for recovering valuable metal resources in the leaching agent also leaks from the bottom zone of the tailings to the outside due to gravity in the leaching and extraction processes, so that a certain degree of resource loss and environmental pollution events occur (the leaching agent and the metal elements dissolved therein generally have adverse effects on the environment).

Secondly, the method comprises the following steps: in the case of environmental protection projects needing to be treated or repaired, people adopt conventional biological, chemical, physical and other repair methods to treat the projects, and the defects of secondary pollution, secondary pollutant excavation, long repair time, high construction cost, large excavation volume, pollutant environmental exposure and the like are also avoided. Also, if the invention patent is adopted: CN201310291574.4 'anti-pollution three-dimensional composite anti-seepage barrier system', provides a technical scheme, which is controlled by whether a weakly permeable layer or a non-permeable layer exists at the location of a project, if the geological conditions at the location of the project do not meet the technical requirements, the technology can not be used for site repair. And if the weakly permeable layer or the impermeable layer at the site of the project is buried too deeply, the disposal cost of the project is greatly increased, and the construction time is prolonged. Even the adverse conditions of high construction difficulty, high construction cost, long engineering time and the like exist.

Meanwhile, with the development of economy, a large amount of solid wastes are generated by some human beings due to industrial and agricultural production and living behaviors, with the attention of environmental protection, part of wastes are collected in a field with an anti-seepage structure, while the anti-seepage structure is not built or a waste storage field with a leakage phenomenon exists in the prior art, the wastes often contain toxic and harmful components to the surrounding environment, and the harmful components migrate to the surrounding area under the action of underground water or rainwater to pollute the surrounding soil or the bottom water, thereby seriously affecting the life and property safety of surrounding personnel. To eliminate these adverse effects, chemical or physical and biological treatments or combinations of these methods are commonly used to treat the contaminated soil or contaminants themselves according to their properties, so as to reduce the content of these contaminants or change the physicochemical properties of these contaminants and reduce their adverse effects on the environment, and on the other hand, barrier techniques such as horizontal or vertical barrier structures constructed using HDPE films as core barrier materials are also used to cut off the contaminant migration paths of the waste. The purpose of environment restoration or management and control is achieved;

however, if the objects to be treated (mineral products, tailings, solid wastes, contaminated soil, hazardous wastes, etc.) are transferred to a position with a bottom leakage-proof structure and then treated, the transfer cost is high, and in the transfer process, the risk of leakage or landslide of the working surface is caused, so that certain safety and environmental risks exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome existence among the prior art: the in-situ blocking structure, the blocking system and the liquid drainage system can form an impermeable layer at the bottom of the existing object to be treated through grouting, so that the pollution to the surrounding environment is greatly reduced when the existing object to be treated is treated in situ.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

an in-situ barrier structure comprises a first side wall and a second side wall which are positioned outside an existing object to be treated, wherein the lower part of the first side wall is hermetically connected with the lower part of the second side wall, the first side wall and/or the second side wall are obliquely arranged, the first side wall and/or the second side wall comprises at least one impermeable layer arranged along the wall thickness direction of the first side wall and/or the second side wall, the impermeable layer comprises construction holes,

the barrier layer is configured to: the impermeable layer is a layered structure body which is solidified and formed into a whole with the surrounding soil layer and/or rock mass through impermeable slurry poured or high-pressure rotary-sprayed into the construction hole.

The application discloses an in-situ blocking structure, first side wall and second side wall set up in existing pending thing outside, do not move the existing pending thing condition construction promptly, when the construction, at first side wall and second side wall of existing pending thing outside construction to with the lower part sealing connection of first side wall and second side wall, wherein, first side wall or second side wall set up for vertical face slope, perhaps first side wall or second side wall all set up for vertical face slope, in order to form a V type cross-section or be similar to the bottom seal body of V type cross-section, first side wall and/or second side wall include at least one layer barrier layer that sets up along its wall thickness direction, this barrier layer is through to the downthehole pouring of construction or high pressure whirl spraying prevention of seepage liquid, prevention of seepage liquid oozes out the construction hole because of pressure or gravity to form the consolidation body with peripheral soil horizon and/or rock mass, all the consolidation bodies on the same layer are formed by sequentially converging, so that the problem that when an existing object to be treated is treated in situ, the treatment solution leaks downwards or the existing object to be treated leaks downwards in the long-time placing process to cause great pollution to the surrounding environment is solved, the purpose of preventing liquid-phase substances in the object to be treated from diffusing to the outer side of the first side wall and/or the second side wall is achieved, pollution to the surrounding environment is greatly reduced, and in addition, the first side wall and/or the second side wall play a role in preventing underground water from entering the inside of the existing object to be treated.

To sum up, this application an in situ barrier structure under the prerequisite of unchanging pending thing, set up the barrier layer, can effectively isolated barrier layer inside and outside exchange of material, especially the exchange of liquid phase material, first side wall and/or second side wall play and prevent outside water to get into inside the existing thing of waiting to handle to and prevent the mesh that the liquid phase material in the thing of waiting to handle outward diffuses to first side wall and/or second side wall.

Preferably, the entrance of the construction hole is arranged on the top surface of the first side wall and/or the second side wall, and the construction hole is drilled from the top surface of the first side wall and/or the second side wall, so as to realize the construction of the impermeable layer, and simultaneously realize the requirement of setting the corresponding impermeable layer on the premise of not disturbing the object to be treated.

Preferably, the first side wall and/or the second side wall are/is provided with at least three impermeable layers along the thickness direction of the first side wall and/or the second side wall, so that a better blocking effect is achieved.

Preferably, a monitoring subsystem is arranged on the outer side of the first side wall and/or the outer side of the second side wall, and the monitoring subsystem is used for monitoring the seepage-proofing condition of the first side wall and/or the second side wall in real time.

And the monitoring subsystem is arranged on the outer side of the first side wall and/or the second side wall and is used for monitoring whether corresponding substances pass through the first side wall and/or the second side wall so as to monitor the real-time anti-seepage effect of the first side wall and/or the second side wall in real time, find problems and make remedial measures or process in time.

Preferably, the two sides of the first side wall are connected with the corresponding sides of the second side wall in a sealing manner, and the first side wall and the second side wall enclose a cavity with a sealed bottom and an open top. And harmful substances are prevented from leaking out from the space between the first side wall and the second side wall to cause pollution.

The utility model also discloses a separation system, include top seepage prevention structure and like this application normal position separation structure, top seepage prevention structure respectively with first side wall with second side wall sealing connection.

The application a separation system, existing pending thing top sets up top seepage prevention structure, and makes top seepage prevention structure respectively with first side wall with second side wall sealing connection forms sealed cavity to prevent that the water (external rainwater, surface water or shallow groundwater) that has had the thing top of awaiting processing from getting into in the existing pending thing, thereby reduce the seepage control load of first side wall and/or second side wall.

Preferably, at least one through pipe is arranged on the top anti-seepage structure in a penetrating manner and/or at least one through pipe is arranged on the first side wall in a penetrating manner, and the through pipes are used for exchanging gas and/or liquid inside and outside the object to be treated.

The through pipe can be used for gas exchange between the inside and the outside of the object to be treated, can also be used for pumping liquid-phase products in the existing object to be treated to the outside of the blocking system, or can be used for discharging treatment liquid for treating the existing object to be treated into the existing object to be treated.

The through pipe can be a vent pipe used for exchanging gas inside and outside the object to be treated, and can also be a pumping pipe used for pumping and discharging liquid-phase products in the object to be treated to the outside of the blocking system, or discharging treatment liquid for treating the object to be treated into the object to be treated.

The utility model also discloses a flowing back system, include like this application an normal position separation structure or like this application the separation system, still including be used for with liquid phase result in the existing pending thing is arranged to external flowing back passageway.

The liquid phase product is liquid or liquid mixture in the existing object to be treated.

A flowing back system, the liquid phase result in the existing pending thing concentrates the drainage guide or extracts special treatment center through flowing back passageway for retrieve corresponding resource or carry out nontoxic innocent treatment.

Preferably, the liquid drainage channel penetrates through the impermeable layer, and the liquid phase product in the existing object to be treated is drained more through the liquid drainage channel due to the fact that the impermeable layer is positioned outside the existing object to be treated.

Preferably, a liquid-phase product reactor is communicated with the downstream of the liquid discharge channel and is used for treating substances to be treated in the liquid-phase product.

Preferably, a liquid-phase product filter is communicated between the liquid discharge channel and the liquid-phase product reactor.

Preferably, the liquid passage is connected to a liquid-phase product filter, which is capable of collecting solid particles of the liquid-phase product and separating them from the liquid-phase product.

Preferably, a monitoring device is arranged between the liquid-phase product reactor and the liquid-phase product filter, and the monitoring device is used for synchronously feeding back real-time monitored data to a working party, an owner party and a monitoring party.

Preferably, a heterogeneous phase separator and a liquid phase injection device are communicated with the downstream of the liquid phase product reactor in sequence, the heterogeneous phase separator is used for separating liquid in residual substances in the liquid phase product reactor and discharging the liquid into the liquid phase injection device, and the liquid phase injection device circularly injects the liquid into the existing object to be treated.

In the above scheme, after the liquid phase product reactor treats the substance to be treated in the liquid phase product, a heterogeneous reactant, generally a solid substance or an oil phase material of insoluble or slightly soluble water, is generated, and the heterogeneous separator is used for separating the liquid in the remaining substance and discharging the liquid into the liquid phase injection equipment. The separated solid phase or insoluble or slightly soluble oil phase substance is used for recovering corresponding resources or is subjected to non-toxic and harmless disposal.

Preferably, a monitoring structure is communicated between the liquid-phase product reactor and the heterogeneous separator, and the monitoring structure is used for synchronously feeding back real-time monitoring data to a working party, an owner party and a monitoring party.

Specifically, the liquid phase product contains chemical leaching agents and/or biological agents, and generally, water is used as a solvent.

Wherein:

when the existing object to be treated is the copper ore containing sulfur, sulfuric acid, thiophilic bacillus and water are used as leaching agents;

when the existing object to be treated is gold ore and/or silver ore, the leaching agent is generally prepared by cyanide or non-cyanide compounds;

when the existing object to be treated is an oxidized mineral such as copper, zinc, nickel, cobalt, etc., the leaching agent is generally prepared by ammonia-ammonium salt or sulfuric acid system.

When the existing object to be treated is rare earth ore, the leaching agent is generally prepared by sulfate or carbonate.

When the material to be treated is uranium ore, sulfuric acid can be used to prepare the leaching agent.

When the existing object to be treated is heavy metal dangerous waste such as lead, chromium and the like or a polluted site, a leaching agent prepared by acetic acid, hydrochloric acid or nitric acid is adopted.

When the existing substance to be treated is a composite ore containing gold, silver, copper, zinc and the like, the copper and the zinc are preferentially recovered by selecting a leaching agent for leaching the copper and the zinc. Then selecting the agent for leaching gold and silver, and recovering the corresponding gold and silver elements.

Preferably, when the existing object to be treated is a complex compound ore containing gold, silver, copper, zinc, sulfur and the like, the leaching agent of copper, zinc and sulfur is selected to preferentially recover copper and zinc. Then selecting the agent for leaching gold and silver, and recovering the corresponding gold and silver elements.

When the existing object to be treated is a landfill, particularly a percolate polluted site of an old landfill, the object is generally treated by adopting a repair liquid prepared by glucose and microorganism composite strains.

Preferably, the in-situ blocking structure, the blocking system and the drainage system can be used independently as independent systems, or can be used in combination of two or more in the same project.

Preferably, the in-situ blocking structure, the blocking system and the liquid drainage system can be used in the fields of mineral resource recovery and/or environmental remediation and/or hazardous waste treatment, are applied to mineral resource recovery, environmental remediation and hazardous waste projects, provide double functions of blocking and remediation for the projects, avoid adverse effects on the surrounding environment and create economic benefits; the method is used for treating substances such as gold-containing and/or silver and/or copper and/or zinc and/or nickel and/or chromium and/or lead and/or cobalt and/or uranium and/or rare earth and/or landfill leachate polluted soil. The method is applied to mineral resource recovery, environmental remediation and dangerous waste projects to recover and/or treat metals such as gold, silver, copper, zinc, nickel, cobalt, rare earth, uranium, lead, chromium and the like, so that the utilization rate of resources is effectively improved, the waste of resources is reduced, and the environment around the projects is protected or treated.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the in-situ blocking structure, on the premise that an object to be treated is not bent, the anti-seepage layer is arranged, exchange of substances inside and outside the anti-seepage layer, especially exchange of liquid-phase substances, can be effectively isolated, and the first side wall and/or the second side wall play a role in preventing external water from entering the inside of the existing object to be treated and preventing the liquid-phase substances in the object to be treated from diffusing outside the first side wall and/or the second side wall.

2. The application a normal position separation structure, set up the monitoring subsystem in first side wall and/or second side wall outside for whether the monitoring has corresponding material to pass through first side wall and/or second side wall, with the real-time prevention of seepage effect of real-time supervision first side wall and/or second side wall, the discovery problem can in time be made remedial measure or be handled.

4. An in situ separation structure, the both sides of first side wall with the side sealing connection that the second side wall corresponds, first side wall with the second side wall encloses into the bottom sealedly to and the open cavity in top. And harmful substances are prevented from leaking out from the space between the first side wall and the second side wall to cause pollution.

5. The application a separation system, existing pending thing top sets up top seepage prevention structure, and makes top seepage prevention structure respectively with first side wall with second side wall sealing connection forms sealed cavity to prevent that the water (external rainwater, surface water or shallow groundwater) that has had the thing top of awaiting processing from getting into in the existing pending thing, thereby reduce the seepage control load of first side wall and/or second side wall.

6. A flowing back system, the liquid phase result in the existing pending thing concentrates the drainage guide or extracts special treatment center through flowing back passageway for retrieve corresponding resource or carry out nontoxic innocent treatment.

7. The in-situ blocking structure, the blocking system and the liquid drainage system can be used in the fields of mineral resource recovery and/or environmental remediation and/or hazardous waste treatment, are applied to mineral resource recovery, environmental remediation and hazardous waste projects, provide double functions of blocking and remediation for the projects, avoid adverse effects on the surrounding environment and create economic benefits; the method is used for treating substances such as gold-containing and/or silver and/or copper and/or zinc and/or nickel and/or chromium and/or lead and/or cobalt and/or uranium and/or rare earth and/or landfill leachate polluted soil, is applied to mineral resource recovery, environmental remediation and dangerous waste projects, and is used for recovering and/or treating metals such as gold, silver, copper, zinc, nickel, cobalt, rare earth, uranium, lead, chromium and the like, so that the utilization rate of resources is effectively improved, the waste of resources is reduced, and the effect of protecting or treating the environment around the projects is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an in-situ blocking structure of the present invention.

Fig. 2 is the relative position schematic diagram (single-side V-shape) of the first side wall and the second side wall of the present invention.

Fig. 3 is a schematic diagram (tapered) of the relative positions of the first side wall and the second side wall according to the present invention.

Fig. 4 is a schematic top view (polygonal pyramid) of the relative positions of the first side wall and the second side wall according to the present invention.

Fig. 5 is a schematic structural view of a blocking system and a liquid discharge system of the present invention.

The labels in the figure are: 1-a top impermeable structure; 10-a through pipe; 11-a breather pipe; 12-a drainage pipe; 2-a first side wall; 3-a second side wall; 31-barrier layer; 311-construction holes; 32-a monitoring subsystem; 4-a liquid drainage channel; 41-liquid phase product reactor; 42-liquid phase product filter; 43-a heterogeneous separator; 44-liquid phase injection means; 45-monitoring the structure; 46-a recycle line; 5-existing object to be treated; 6-cavity body; 7-a first sealing wall; 8-second sealing wall.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

Example 1

As shown in fig. 1 to 5, the in-situ blocking structure according to this embodiment includes a first side wall 2 and a second side wall 3 both located outside an existing object to be processed 5, a lower portion of the first side wall 2 is connected to a lower portion of the second side wall 3 in a sealing manner, the first side wall 2 and/or the second side wall 3 are disposed in an inclined manner, the first side wall 2 and/or the second side wall 3 includes at least one impermeable layer 31 disposed along a wall thickness direction thereof, the impermeable layer 31 includes construction holes 311, wherein,

the barrier layer 31 is configured to: and (3) pouring or high-pressure jet grouting seepage-proofing slurry into the construction hole 311, wherein the seepage-proofing slurry seeps out of the construction hole 311 and forms a consolidation body with a peripheral soil layer and/or rock mass, and all the consolidation bodies on the same layer are sequentially converged to form a layered structural member.

The two sides of the first side wall 2 are connected with the corresponding sides of the second side wall 3 in a sealing mode, and the first side wall 2 and the second side wall 3 are enclosed to form a cavity 6 with a sealed bottom and an opened top. The harmful substances are prevented from leaking out from the space between the first side wall 2 and the second side wall 3 to cause pollution. The construction holes 311 on the first side wall 2 are arranged on the top surface of the first side wall 2 and drilled from the top surface, and the construction holes 311 on the second side wall 3 are arranged on the top surface of the first side wall 2 and drilled from the top surface.

In a general design, the first side wall 2 is provided with at least three anti-seepage layers 31 along the thickness direction thereof, and the second side wall 3 is provided with at least three anti-seepage layers 31 along the thickness direction thereof, so as to achieve a better blocking effect.

Specifically, three anti-seepage layers 31 are arranged along the thickness direction of the anti-seepage layer, the outermost anti-seepage layer 31 and the innermost anti-seepage layer 31 have a blocking effect and are used for preventing underground water from entering the object to be treated 5 and preventing liquid-phase substances in the object to be treated 5 from diffusing to the outer sides of the first side wall 2 and/or the second side wall 3, the middle anti-seepage layer 31 has an absorption effect, and trace harmful substances which individually penetrate through the blocking layers are absorbed by the absorption layers and are used together for absorption and blocking and are protected in a three-dimensional mode, so that the anti-seepage effect of the first side wall 2 and/or the second side wall 3 is greatly improved.

Preferably, a monitoring subsystem 32 is arranged outside the first side wall 2 and/or the second side wall 3, and the monitoring subsystem 32 is configured to monitor the seepage-proofing condition of the first side wall 2 and/or the second side wall 3 in real time, and monitor whether a corresponding substance passes through the first side wall 2 and/or the second side wall 3, so as to monitor the real-time seepage-proofing effect of the first side wall 2 and/or the second side wall 3 in real time, find a problem, and make a remedial measure or process in time.

In the in-situ blocking structure, a first side wall 2 and a second side wall 3 are arranged outside an existing object to be processed 5, namely, the first side wall 2 and the second side wall 3 are constructed under the condition that the existing object to be processed 5 is not moved, during construction, the first side wall 2 and the second side wall 3 are constructed outside the existing object to be processed 5, and the lower parts of the first side wall 2 and the second side wall 3 are hermetically connected, wherein the first side wall 2 or the second side wall 3 is obliquely arranged relative to a vertical surface, or the first side wall 2 or the second side wall 3 is obliquely arranged relative to the vertical surface, so as to form a V-shaped section or a bottom sealing body similar to the V-shaped section, the first side wall 2 and/or the second side wall 3 comprise at least one impermeable layer 31 arranged along the wall thickness direction of the first side wall 2 and/or the second side wall 3, the impermeable layer 31 is formed by pouring or high-pressure rotary spraying impermeable slurry into a construction hole 311, and the impermeable slurry seep, and forms a consolidation body with the surrounding soil layer and/or rock mass, all the consolidation bodies in the same layer are formed by converging in sequence, so that the problem that the surrounding environment is greatly polluted due to downward leakage of a treatment solution or the downward leakage of the existing object to be treated in the long-time placement process when the existing object to be treated 5 is treated in situ is prevented, the aim of preventing liquid-phase substances in the existing object to be treated from diffusing to the outer side of the first side wall 2 and/or the second side wall 3 is fulfilled, the pollution to the surrounding environment is greatly reduced, and the first side wall 2 and/or the second side wall 3 prevent underground water from entering the inside of the existing object to be treated.

In the above-mentioned scheme, (unilateral V type), the utility model discloses a first side wall and second side wall as long as satisfy above-mentioned operation requirement can, in the actual process, it often can constitute awl type, V type, unilateral V type, or the cross-section is structures such as V type, and specific selection needs go on according to the circumstances of on-the-spot in-service use, if there is natural or current seepage prevention structure on the scene, then first side wall and second side wall also can cooperate current seepage prevention structure to carry out the seepage prevention construction.

As shown in fig. 1-2, one side of the first side wall 2 is connected to the corresponding side of the second side wall 3 through a first sealing wall 7 in a sealing manner, the other side of the first side wall 2 is connected to the corresponding side of the second side wall 3 through a second sealing wall 8 in a sealing manner, and the first side wall 2 and the second side wall 3 enclose a cavity 6 with a sealed bottom and an open top.

The first 7 and second 8 sealing walls may be natural or already existing impervious structures or structures made by the same process as the first side wall 2.

In the above structure, the first side wall 2 and the second side wall 3 of the seepage-proofing structure can be in any shape, and the seepage-proofing structure can be adjusted to rotate specifically according to the position of the existing object to be processed 5 and the surrounding geology during construction, for example, the seepage-proofing structure can be in a ring shape (the overlooking can be in a polygonal shape such as a circle, an ellipse, a triangle, a quadrangle and the like), or a part of the side surface is an existing seepage-proofing layer (formed naturally or manufactured artificially), so that the scheme only needs to construct the vertical seepage-proofing structure 2 on the side surface part without the seepage-proofing layer, and the vertical seepage-proofing structure 2 is connected with the existing seepage-proofing layer in a sealing manner to form the closed.

Specifically, as shown in fig. 3-4, two sides of the first side wall 2 are connected with the corresponding side walls of the second side wall 3 in a sealing manner to form a tapered member.

The beneficial effect of this embodiment is that under the prerequisite of not disturbing the thing to be treated, set up the barrier layer, can effectively keep off the exchange of the inside and outside material of barrier layer, especially the exchange of liquid phase material, first side wall 2 and/or second side wall 3 play prevents that external water from getting into existing thing to be treated inside, and prevent that the liquid phase material in the thing to be treated from outwards diffusing to first side wall 2 and/or second side wall 3.

Example 2

As shown in fig. 5, the blocking system of this embodiment includes a top impermeable structure 1 and an in-situ blocking structure as described in embodiment 1, where the top impermeable structure 1 is hermetically connected to the first side wall 2 and the second side wall 3, the top impermeable structure 1 is provided with at least one through pipe 10 in a penetrating manner and/or the first side wall 2 is provided with at least one through pipe 10 in a penetrating manner, the through pipe 10 is used for exchanging gas and/or liquid inside and outside the existing object to be processed 5, and the through pipe may be used for exchanging gas inside and outside the existing object to be processed, or pumping liquid-phase products in the existing object to be processed to the outside of the blocking system, or pumping processing liquid used for processing the existing object to be processed into the existing object to be processed.

Specifically, the through pipe 10 may be a through pipe 11, the through pipe 11 is used for exchanging gas between the inside and the outside of the existing object to be processed 5, and the through pipe 10 may also be a draining pipe 12, and the draining pipe 12 is used for draining a liquid-phase product in the existing object to be processed 5 to the outside of the blocking system, or draining a processing liquid for processing the existing object to be processed 5 into the existing object to be processed 5.

The beneficial effects of this embodiment: the application a separation system, existing pending thing top sets up top seepage prevention structure, and makes top seepage prevention structure respectively with first side wall 2 with 3 sealing connection of second side wall form sealed cavity to prevent that the external rainwater of water, surface water or shallow groundwater that have had the thing 5 top of awaiting processing from getting into existing pending thing 5 in, thereby reduce the seepage prevention load of first side wall 2 and/or second side wall 3.

Example 3

As shown in fig. 5, the liquid discharge system of this embodiment includes an in-situ barrier structure as described in embodiment 1 or a barrier system as described in embodiment 2, and further includes a liquid discharge channel 4 for discharging the liquid product in the existing object to be treated 5 to the outside, wherein the liquid discharge channel 4 penetrates through the impermeable layer, and the impermeable layer 31 is located below the existing object to be treated 5, and the liquid discharge channel penetrates through the impermeable layer, so that the liquid product in the existing object to be treated is discharged more through the liquid discharge channel. The downstream of the liquid drainage channel 4 is communicated with a liquid phase product reactor 41, the liquid phase product reactor 41 is used for treating substances to be treated in the liquid phase products, a liquid phase product filter is communicated between the liquid drainage channel and the liquid phase product reactor, the liquid channel is connected with the liquid phase product filter, solid particles of the liquid phase products can be collected by the device and separated from the liquid phase products, a monitoring device is arranged between the liquid phase product reactor and the liquid phase filter, and the monitoring device is used for synchronously feeding back real-time monitoring data to a working party, an owner party and a supervision party.

A heterogeneous separator 43 and a liquid phase injection device 44 are sequentially communicated with the downstream of the liquid phase product reactor 41, the heterogeneous separator 43 is used for separating liquid in residual substances in the liquid phase product reactor 41 and discharging the liquid into the liquid phase injection device 44, the liquid phase injection device 44 circularly injects the liquid into the object to be treated 5 through a circulating pipeline 46, and sometimes, the circulating pipeline 46 is communicated with the object to be treated by taking a pumping and discharging pipe 12 as an inlet.

In the above scheme, a monitoring device 45 is connected between the liquid phase product reactor 41 and the liquid phase filter 42, and the monitoring device 45 is used for monitoring the liquid phase data input by the liquid phase product reactor 41 in real time and synchronously feeding back the data monitored in real time to the working party, the owner party and the monitoring party.

The beneficial effects of this embodiment: after the liquid phase product reactor treats the substance to be treated in the liquid phase product, heterogeneous reactants, generally solid substances or oil phase materials of insoluble or slightly soluble water, are generated, and the heterogeneous separator is used for separating the liquid in the residual substance and discharging the liquid into the liquid phase injection equipment. The separated solid phase or insoluble or slightly soluble oil phase substance is used for recovering corresponding resources or is subjected to non-toxic and harmless disposal.

Example 4

The liquid phase product described in example 1 or 2 or 3 contains chemical leaching agents and/or biological agents, typically water as a solvent. Before the impermeable layer is constructed, the material to be treated can be loosened in advance according to the specific project conditions, and the treatment effect is to be enhanced.

Wherein:

when the existing object 5 to be treated is the chalcopyrite, sulfuric acid, thiophilic bacillus and water are used as leaching agents;

when the existing object to be treated 5 is gold ore and/or silver ore, the leaching agent is generally prepared by cyanide or non-cyanide compounds;

when the existing object 5 to be treated is an oxidized mineral such as copper, zinc, nickel, cobalt, etc., an ammonia-ammonium salt system or sulfuric acid is generally adopted to prepare the leaching agent.

When the existing object 5 to be treated is rare earth ore, the leaching agent is generally prepared by sulfate or carbonate.

When the material 5 to be treated is uranium ore, sulfuric acid can be used as a leaching agent.

When the existing object 5 to be treated is a heavy metal dangerous waste such as lead, chromium and the like or a polluted site, a leaching agent prepared by acetic acid, hydrochloric acid or nitric acid is adopted.

When the existing object 5 to be treated is a composite ore containing gold, silver, copper, zinc and the like, the copper and the zinc are preferentially recovered by selecting a leaching agent for leaching the copper and the zinc. Then selecting the agent for leaching gold and silver, and recovering the corresponding gold and silver elements.

When the existing object to be treated 5 described in example 1, 2 or 3 is a complex mineral containing gold, silver, copper, zinc, sulfur and the like, the leaching agent of copper, zinc and sulfur is selected to preferentially recover copper and zinc. Then selecting the agent for leaching gold and silver, and recovering the corresponding gold and silver elements.

When the existing object 5 to be treated is a landfill, particularly a percolate polluted site of an old landfill, the object is generally treated by adopting a repair liquid prepared by glucose and microorganism composite strains.

The in-situ barrier structure of embodiment 1, the barrier system of embodiment 2, and the drainage system of embodiment 3 can be used alone as independent systems, or two or more of them can be used in combination in the same project.

The in-situ barrier structure described in embodiment 1, the barrier system described in embodiment 2, and the drainage system described in embodiment 3 can be used in the fields of mineral resource recovery and/or environmental remediation and/or hazardous waste treatment, and can also be used for temporarily constructing a liquid storage structure in a geological structure and playing an auxiliary role in landslide treatment.

The method is applied to mineral resource recovery, environmental remediation and dangerous waste projects, provides dual functions of blocking and remediation for the projects, avoids adverse effects on the surrounding environment, and can create economic benefits; the method can also be used for treating substances such as gold-containing and/or silver and/or copper and/or zinc and/or nickel and/or chromium and/or lead and/or cobalt and/or uranium and/or rare earth and/or landfill leachate polluted soil.

The method is applied to mineral resource recovery, environmental remediation and dangerous waste projects to recover and/or treat metals such as gold, silver, copper, zinc, nickel, cobalt, rare earth, uranium, lead, chromium and the like, so that the utilization rate of resources is effectively improved, the waste of resources is reduced, and the environment around the projects is protected or treated. And after the project is finished, reinforcement measures can be carried out on the reaction dead zone according to specific conditions, so that geological disasters are prevented.

When the barrier slurry described in example 1, 2 or 3 is specifically: the anti-seepage slurry comprises, by weight, 50-200 parts of clay, 50-200 parts of bentonite, 300 parts of aqueous resin emulsion, 15-180 parts of a regulator, 10-300 parts of dry powder and 2000 parts of water.

The clay can enrich the heavy metal ions, and the reaction speed of the regulator and the heavy metal ions is accelerated under the action of the clay enriching the heavy metal ions. A large number of fine cavity structures distributed by the clay minerals and the regulator can effectively adsorb organic pollutants in sewage or soil. The clay is preferably a light clay.

The mineral structure of clay contains inorganic cation capable of being exchanged freely, and a part of oxygen atom electron is exposed on the crystal surface, so that the clay mineral has good adsorption property and self-cleaning ability which are two diametrically opposite. Isomorphous substitution often occurs in the tetrahedron or octahedron structure of the clay mineral, so that charge imbalance occurs, oxygen atoms are exposed on the fracture surface of the clay mineral due to crystal breakage, and the characteristics enable the crystal surface of the clay mineral to have permanent negative charges, so that metal ions are attracted, and coordination can be generated to combine the purposes of removing heavy metal ions in polluted soil or underground water. The clay can enrich heavy metal ions in the clay in the polluted soil or underground water, and the enriched heavy metal ions can exchange with iron in the conditioning agent and are further adsorbed by activated carbon in the conditioning agent. Microscopically, the chemical reaction speed of the regulator and the heavy metal ions is accelerated, and according to the activated molecules and the effective collision theory in the effective collision theory, at a certain temperature, the percentage of the activated molecules is certain, but the higher the concentration is, the more the total number of the molecules in a unit volume is, the more the number of the activated molecules is, the more the number of the effective collisions is, and the higher the speed is.

On one hand, the bentonite improves the overall lubricity of the barrier material body, and improves the impermeability of the bonding body by utilizing the expansion performance of the bentonite in each fine gap. On the other hand, it can disperse in water medium to form colloidal suspension, and has a certain viscosity and thixotropy, and its admixture with silt, etc. has plasticity and cohesiveness, and has strong cation exchange capacity and adsorption capacity. The bentonite is preferably 200-400 mesh sodium bentonite.

The resin emulsion provides organic cross-linked polymers of the barrier material, increases the viscosity of the barrier material, enables the consolidation body to form an integral structure with certain elasticity through the cross-linking of the organic polymers, improves the brittleness of the consolidation body formed by the conventional grouting material and the surrounding soil, and improves the physical strength and the chemical stability of the consolidation body. Increase the water barrier property of the solidification body, thereby improving the water barrier property and the acid and alkali resistance of the solidification body.

The conditioning agent refers to a material capable of adsorbing heavy metal ions and organic pollutants. The environment restoration functional material is preferably a powdery or liquid conditioning agent.

On one hand, the addition of the dry powder increases the reaction temperature, accelerates the reaction speed of the environment restoration functional material and the heavy metal in the polluted soil, and precipitates part of heavy metal elements. On the other hand, the dry powder also has the function of solidifying and repairing functional materials and prolonging the service life of the dry powder.

Ordinary portland cement and fly ash in the dry powder material undergo a hydration reaction with water to generate a C-S-H gel system, and finally a micro space structure is formed, and the structure effectively wraps the regulator, so that the regulator can stably play a role in repairing for a long time. Therefore, the water-setting substance in the dry powder material can wrap the regulator, so that the long-acting repairing function can be exerted.

Under the mixing action of the polymer, the clay, the bentonite and the water, the water-based resin emulsion provides organic cross-linked polymer of the barrier material, increases the viscosity of the barrier material, and enables the consolidation body to form an integral structure with certain elasticity through the cross-linking of the organic polymer. The coordination among the clay, the bentonite, the dry powder and the environment restoration functional material enhances the unit volume concentration of the heavy metal; thereby improving the repairing effect of the regulator.

In conclusion, an organic-inorganic adhesive system is formed by clay, bentonite and high polymers, and a consolidated body is formed by a barrier material and a soil body or a rock body; the repairing effect of the environment repairing functional material on the heavy metal ions and organic pollutants in the polluted soil or underground water is fully enhanced by utilizing the adsorption performance of the clay and the bentonite and the heat released in the hydration process of the dry powder material; thereby obtaining the anti-seepage slurry with the environmental remediation function.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An in-situ blocking structure is characterized by comprising a first side wall (2) and a second side wall (3) which are both positioned outside an existing object to be processed (5), wherein the lower part of the first side wall (2) is hermetically connected with the lower part of the second side wall (3), the first side wall (2) and/or the second side wall (3) are obliquely arranged, the first side wall (2) and/or the second side wall (3) comprise at least one anti-seepage layer (31) arranged along the wall thickness direction of the first side wall and/or the second side wall, the anti-seepage layer (31) comprises construction holes (311), wherein,

the barrier layer (31) is configured to: the anti-seepage layer (31) is a layered structure body which is solidified and formed into a whole with the surrounding soil layer and/or rock mass through anti-seepage slurry poured or high-pressure rotary-sprayed into the construction hole (311).

2. An in-situ barrier structure according to claim 1, wherein the entrance of the construction hole (311) is arranged on the top surface of the first side wall (2) and/or the second side wall (3).

3. The in-situ barrier structure of claim 1, wherein the first sidewall (2) and/or the second sidewall (3) are provided with at least three barrier layers (31) along the thickness direction thereof.

4. An in-situ barrier structure according to any one of claims 1 to 3, wherein a monitoring subsystem (32) is disposed outside the first side wall (2) and/or the second side wall (3), and the monitoring subsystem (32) is configured to monitor an anti-seepage condition of the first side wall (2) and/or the second side wall (3) in real time.

5. An in-situ barrier structure according to any one of claims 1 to 3, wherein two sides of the first side wall (2) are hermetically connected to corresponding sides of the second side wall (3), the first side wall (2) and the second side wall (3) enclose a bottom seal and a cavity (6) with an open top.

6. A barrier system, comprising a top barrier structure (1) and an in-situ barrier structure according to any one of claims 1 to 5, wherein the top barrier structure (1) is sealingly connected to the first sidewall (2) and the second sidewall (3), respectively.

7. The barrier system according to claim 6, wherein at least one through pipe (10) is arranged on the top barrier structure (1) and/or at least one through pipe (10) is arranged on the first side wall (2) in a penetrating manner, and the through pipe (10) is used for exchanging gas and/or liquid inside and outside the object (5) to be treated.

8. Drainage system, comprising an in situ barrier structure according to any of claims 1-5 or a barrier system according to claim 6 or 7, and further comprising a drainage channel (4) for draining liquid phase product from the existing object (5) to the outside.

9. Drainage system according to claim 8, characterized in that downstream of the drainage channel (4) there is connected a liquid-phase product reactor (41), said liquid-phase product reactor (41) being intended for treating the substance to be treated in the liquid-phase product.

10. A drainage system according to claim 9, characterized in that downstream of the liquid-phase product reactor (41) there are connected in series a heterogeneous separator (43) and a liquid-phase injection device (44), the heterogeneous separator (43) being adapted to separate and discharge the liquid from the remaining substance in the liquid-phase product reactor (41) into the liquid-phase injection device (44), the liquid-phase injection device (44) being adapted to cyclically inject the liquid into the existing substance (5).