CN110424364B - Ecological restoration method and restoration system for ion type rare earth in-situ leaching abandoned mine - Google Patents
Ecological restoration method and restoration system for ion type rare earth in-situ leaching abandoned mine Download PDFInfo
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- CN110424364B CN110424364B CN201910425806.8A CN201910425806A CN110424364B CN 110424364 B CN110424364 B CN 110424364B CN 201910425806 A CN201910425806 A CN 201910425806A CN 110424364 B CN110424364 B CN 110424364B
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 35
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 35
- 238000002386 leaching Methods 0.000 title claims abstract description 33
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000004888 barrier function Effects 0.000 claims abstract description 37
- 239000002689 soil Substances 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 25
- 239000013049 sediment Substances 0.000 claims abstract description 15
- 239000002352 surface water Substances 0.000 claims abstract description 14
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 46
- 230000008595 infiltration Effects 0.000 claims description 22
- 238000001764 infiltration Methods 0.000 claims description 22
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 12
- 239000003344 environmental pollutant Substances 0.000 claims description 11
- 231100000719 pollutant Toxicity 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000000149 penetrating effect Effects 0.000 abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000003673 groundwater Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an ecological restoration method and a restoration system for an ionic rare earth in-situ leaching waste mine, wherein the ecological restoration method for the ionic rare earth in-situ leaching waste mine comprises the following steps: reinforcing the surface runoff of the abandoned mine so as to prevent the surface water from penetrating into the abandoned mine; planting plants on the surface of the abandoned mine so as to form a covering and blocking surface layer on the surface of the abandoned mine to prevent soil loss; an intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine; constructing a permeable reaction wall at the bottom of the mine waste to prevent the overflow of percolate of the mine waste; a sediment buffer area is arranged between the abandoned mine and the permeable reactive barrier; and collecting and treating the residual liquid from the abandoned mine. So as to solve the problem of ecological pollution of the ion type rare earth in-situ leaching abandoned mine in the prior art.
Description
Technical Field
The invention relates to the technical field of ecological restoration, in particular to an ecological restoration method and a restoration system for an ionic rare earth in-situ leaching waste mine.
Background
In the 70 s of the 20 th century, the ionic rare earth is basically exploited by 'mountain moving', namely, vegetation and soil on the surface layer of the mine are all stripped, raw ore is obtained, and the original soil layer is all destroyed. After rare earth is mined, the mine is subjected to natural degradation in the form of an exposed base stratum (namely granite weathered crust). For 90 years of the 20 th century, the in-situ leaching technology was widely applied to the exploitation of ionic rare earth, namely, sulfuric acid and sulfuric acid leaching solution are injected into ore soil through an injection well to extract rare earth. The excessive sulfuric acid changes the geochemical environment of the mine according to the sulfuric acid leaching solution, accelerates the deterioration of the mine environment, leads to the integral acidification of the mine, the soil to be lean and the enrichment of ammonia nitrogen in the deep part of the ore body, and leads to the ravines of the mining area to be vertical and horizontal, the chemical pollution to be serious and the vegetation in the area where the soil is destroyed to be difficult to survive.
Disclosure of Invention
In view of the above, the embodiment of the invention provides an ecological restoration method and a restoration system for an ionic rare earth in-situ leaching waste mine, which are used for solving the problem of ecological pollution of the ionic rare earth in-situ leaching waste mine in the prior art.
The embodiment of the invention provides an ecological restoration method for an ionic rare earth in-situ leaching abandoned mine, which comprises the following steps:
reinforcing the surface runoff of the abandoned mine so as to prevent the surface water from penetrating into the abandoned mine;
planting plants on the surface of the abandoned mine so as to form a covering and blocking surface layer on the surface of the abandoned mine to prevent soil loss;
an intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine;
constructing a permeable reaction wall at the bottom of the mine waste to prevent the overflow of percolate of the mine waste;
A sediment buffer area is arranged between the abandoned mine and the permeable reactive barrier;
and collecting and treating the residual liquid from the abandoned mine. The percolate is liquid which generates high-concentration organic or inorganic components under the seepage action of precipitation and underground water; the residual liquid is a polluted liquid in the abandoned mine.
The collecting and processing the residual liquid from the abandoned mine comprises the following steps:
extracting residual liquid in the abandoned mine;
Carrying out rare earth precipitation treatment on the residual liquid;
And carrying out adsorption treatment on the residual liquid.
The collecting and processing the residual liquid from the abandoned mine comprises the following steps:
and injecting clean water into the abandoned mine, so that the residual liquid seeps out from the abandoned mine and flows to the permeable reactive barrier to be adsorbed and treated by the permeable reactive barrier.
The arrangement of the intermediate stabilizing layer for preventing soil loss on the abandoned mine comprises the following steps:
And arranging a sand fixing net for preventing sand loss on the surface and/or in the depth direction of the abandoned mine.
The sand fixing net is arranged at the edge position of the full weathering layer of the abandoned mine.
The strengthening of the surface runoff of the abandoned mine to prevent infiltration of surface water into the abandoned mine comprises:
Adding a surface curing agent to the abandoned mine;
At least one rainwater reservoir is arranged on the abandoned mine.
An ionic rare earth in-situ leaching waste mine ecological restoration system, comprising:
plants planted on the surface of the abandoned mine;
the sand fixing net is arranged on the surface and/or in the depth direction of the abandoned mine and used for preventing sand loss;
The infiltration reaction wall is arranged at the bottom of the mine waste and is used for preventing the percolate of the mine waste from overflowing;
And the sediment buffer area is arranged between the mountain of the abandoned mine and the permeable reactive barrier.
The permeable reactive barrier includes an upper portion located above the surface of the earth and a lower portion located within the soil of the surface of the earth.
And an adsorption material for adsorbing pollutants in the percolate is arranged between grids of the sand fixation net.
The adsorption material is zeolite and/or bentonite.
The sediment buffer zone is a slope inclined at an angle of 0-30 degrees with the horizontal plane.
The technical scheme of the invention has the following advantages:
1. The invention provides an ecological restoration method for an ionic rare earth in-situ leaching abandoned mine, which comprises the following steps: reinforcing the surface runoff of the abandoned mine so as to prevent the surface water from penetrating into the abandoned mine; planting plants on the surface of the abandoned mine so as to form a covering and blocking surface layer on the surface of the abandoned mine to prevent soil loss; an intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine; constructing a permeable reaction wall at the bottom of the mine waste to prevent the overflow of percolate of the mine waste; a sediment buffer area is arranged between the abandoned mine and the permeable reactive barrier; and collecting and treating the residual liquid in the abandoned mine. The surface runoff of the abandoned mine can be enhanced to effectively prevent the surface water from penetrating into the abandoned mine; by planting plants on the surface of the abandoned mine to form a covering barrier surface layer, soil loss can be effectively prevented; the infiltration reaction wall can effectively absorb the infiltration liquid, so that the problem that the infiltration liquid overflows under the infiltration action of precipitation and groundwater in the abandoned mine is prevented.
2. The invention provides an ecological restoration method for an ion type rare earth in-situ leaching abandoned mine, wherein an intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine, and the method comprises the following steps of: and arranging a sand fixing net for preventing sand loss on the surface and/or in the depth direction of the abandoned mine. By arranging the sand fixing nets for preventing sand loss on the surface and the depth direction of the abandoned mine at the same time, the sand fixing nets are buried into the abandoned mine to wrap the sand on the surface of the abandoned mine, so that the problem of sand loss is effectively prevented.
3. The invention provides an ecological restoration method for an ion type rare earth in-situ leaching abandoned mine, which is characterized in that the surface runoff of the abandoned mine is enhanced to prevent the surface water from seeping into the abandoned mine and comprises the following steps: adding a surface curing agent to the abandoned mine; and a rainwater reservoir arranged on the abandoned mine. The rainwater impounding reservoir is a plurality of high direction and the circumference direction that follow the abandoned mine are arranged. Through above-mentioned rainwater cistern can collect the rainwater effectively, prevent rainwater infiltration mine waste inside.
4. The invention provides an ecological restoration system for an ion type rare earth in-situ leaching abandoned mine, which comprises an upper layer part positioned above the ground surface and a lower layer part positioned in soil of the ground surface. The infiltration reaction walls are respectively arranged in the soil above the ground and below the ground, so that residual liquid overflowed from the interior of the abandoned mine and percolate generated under the seepage action of precipitation and groundwater can be effectively prevented from overflowing and polluting the environment.
5. The invention provides an ecological restoration system for an ion type rare earth in-situ leaching abandoned mine, wherein an adsorption material for adsorbing pollutants in percolate is arranged between grids of a sand fixation net. The adsorption material for adsorbing pollutants in the percolate is arranged between the grids of the sand fixation net, so that the pollutants in the percolate can be effectively adsorbed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of an ecological restoration system for an ionic rare earth in-situ leaching abandoned mine, which is provided by the embodiment of the invention.
Reference numerals illustrate:
1-abandoned mine; 2-covering the barrier skin; 3-penetrating the reaction wall; 4-sediment buffer areas; 5-a sand fixation net; 6-a fully weathered layer; 7-a semi-weathered layer; 8-base stratum; 9-an upper layer portion; 10-lower layer part.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The embodiment of the invention provides an ecological restoration system for an ionic rare earth in-situ leaching waste mine, which is shown in fig. 1 and comprises the following components:
Plants planted on the surface of the abandoned mine 1;
A sand fixing net 5 which is arranged on the surface and/or in the depth direction of the abandoned mine 1 and used for preventing sand loss;
A permeable reactive barrier 3 disposed at the bottom of the mine waste 1, the permeable reactive barrier 3 being configured to prevent overflow of leachate from the mine waste 1;
and a sediment buffer zone 4 arranged between the mountain of the abandoned mine 1 and the permeable reactive barrier 3. The surface runoff of the abandoned mine 1 can be enhanced to effectively prevent the surface water from penetrating into the abandoned mine 1; soil loss can be effectively prevented by planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2; the infiltration reaction wall 3 can effectively absorb the infiltration liquid, so that the problem that the infiltration liquid overflows under the infiltration effect of precipitation and groundwater in the abandoned mine 1 is prevented.
In the present embodiment, the abandoned mine 1 includes a bedrock layer 8, a semi-weathered layer 7, and a fully weathered layer 6 from inside to outside.
In this embodiment, the permeable reactive barrier 3 includes an upper section 9 located above the surface of the earth and a lower section 10 located within the soil of the surface of the earth. By arranging the permeable reactive barrier 3 in the above-ground and below-ground soil, residual liquid overflowing from the interior of the abandoned mine 1 and percolate generated under the seepage effect of precipitation and groundwater can be effectively prevented from overflowing and polluting the environment. An adsorption material for adsorbing pollutants in the percolate is arranged between grids of the sand fixation net 5. By arranging the adsorption material for adsorbing the pollutants in the percolate between the grids of the sand fixation net 5, the pollutants in the percolate can be effectively adsorbed. The adsorption material is zeolite and bentonite. The sediment buffer zone 4 is a slope inclined at an angle of 0-30 degrees with the horizontal plane.
The ecological restoration method of the ion type rare earth in-situ leaching abandoned mine comprises the following steps:
reinforcing the surface runoff of the abandoned mine 1 to prevent the surface water from penetrating into the abandoned mine 1;
Planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2 on the surface of the abandoned mine 1 so as to prevent soil loss;
An intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine 1;
Constructing a permeable reactive barrier 3 at the bottom of the mine waste 1 to prevent the overflow of the leachate of the mine waste 1;
A sediment buffer zone 4 is arranged between the abandoned mine 1 and the permeable reactive barrier 3;
the residual liquid from the abandoned mine 1 is collected. The percolate is liquid which generates high-concentration organic or inorganic components under the seepage action of precipitation and underground water; the residual liquid is a contaminated liquid in the abandoned mine 1.
Wherein the collecting treatment of the residual liquid from the abandoned mine 1 comprises the following steps:
Extracting residual liquid in the abandoned mine 1;
Carrying out rare earth precipitation treatment on the residual liquid;
And carrying out adsorption treatment on the residual liquid.
Wherein, the arrangement of the middle stabilizing layer for preventing soil loss on the abandoned mine 1 comprises the following steps:
A sand fixation net 5 for preventing sand loss is arranged on the surface and in the depth direction of the abandoned mine 1. And the sand fixing net 5 is arranged at the edge position of the full weathering layer 6 of the abandoned mine 1. By arranging the sand fixation net 5 for preventing sand loss on the surface and the depth direction of the abandoned mine 1 at the same time, the sand fixation net 5 is embedded into the abandoned mine 1, so that the sand on the surface of the abandoned mine 1 can be wrapped, and the problem of sand loss can be effectively prevented.
Wherein the strengthening of the surface runoff of the abandoned mine 1 to prevent infiltration of surface water into the abandoned mine 1 comprises:
Adding a surface curing agent to the abandoned mine 1;
A rainwater reservoir is arranged on the abandoned mine 1. The rainwater reservoirs are arranged in the height direction and the circumferential direction of the mine waste 1. Through above-mentioned rainwater cistern can collect the rainwater effectively, prevent rainwater infiltration mine 1 inside.
Example 2
The embodiment of the invention provides an ecological restoration system for an ionic rare earth in-situ leaching waste mine, which is shown in fig. 1 and comprises the following components:
Plants planted on the surface of the abandoned mine 1;
A sand fixing net 5 which is arranged on the surface and/or in the depth direction of the abandoned mine 1 and used for preventing sand loss;
A permeable reactive barrier 3 disposed at the bottom of the mine waste 1, the permeable reactive barrier 3 being configured to prevent overflow of leachate from the mine waste 1;
and a sediment buffer zone 4 arranged between the mountain of the abandoned mine 1 and the permeable reactive barrier 3. The surface runoff of the abandoned mine 1 can be enhanced to effectively prevent the surface water from penetrating into the abandoned mine 1; soil loss can be effectively prevented by planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2; the infiltration reaction wall 3 can effectively absorb the infiltration liquid, so that the problem that the infiltration liquid overflows under the infiltration effect of precipitation and groundwater in the abandoned mine 1 is prevented.
In this embodiment, the permeable reactive barrier 3 includes an upper section 9 located above the surface of the earth and a lower section 10 located within the soil of the surface of the earth. By arranging the permeable reactive barrier 3 in the above-ground and below-ground soil, residual liquid overflowing from the interior of the abandoned mine 1 and percolate generated under the seepage effect of precipitation and groundwater can be effectively prevented from overflowing and polluting the environment. An adsorption material for adsorbing pollutants in the percolate is arranged between grids of the sand fixation net 5. By arranging the adsorption material for adsorbing the pollutants in the percolate between the grids of the sand fixation net 5, the pollutants in the percolate can be effectively adsorbed. The adsorption material is zeolite and bentonite. The sediment buffer zone 4 is a slope inclined at an angle of 0-30 degrees with the horizontal plane.
The ecological restoration method of the ion type rare earth in-situ leaching abandoned mine comprises the following steps:
reinforcing the surface runoff of the abandoned mine 1 to prevent the surface water from penetrating into the abandoned mine 1;
Planting plants on the surface of the abandoned mine 1 to form a covering barrier surface layer 2 on the surface of the abandoned mine 1 so as to prevent soil loss;
An intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine 1;
Constructing a permeable reactive barrier 3 at the bottom of the mine waste 1 to prevent the overflow of the leachate of the mine waste 1;
A sediment buffer zone 4 is arranged between the abandoned mine 1 and the permeable reactive barrier 3;
the residual liquid from the abandoned mine 1 is collected. The percolate is liquid which generates high-concentration organic or inorganic components under the seepage action of precipitation and underground water; the residual liquid is a contaminated liquid in the abandoned mine 1.
Wherein the collecting and treating of the residual liquid from the abandoned mine 1 comprises the following steps:
and injecting clean water into the abandoned mine 1, so that the residual liquid seeps out from the abandoned mine 1 and flows to the permeable reactive barrier 3, and is adsorbed by the permeable reactive barrier 3.
Wherein, the arrangement of the middle stabilizing layer for preventing soil loss on the abandoned mine 1 comprises the following steps:
A sand fixation net 5 for preventing sand loss is arranged on the surface and in the depth direction of the abandoned mine 1. And the sand fixing net 5 is arranged at the edge position of the full weathering layer 6 of the abandoned mine 1. By arranging the sand fixation net 5 for preventing sand loss on the surface and the depth direction of the abandoned mine 1 at the same time, the sand fixation net 5 is embedded into the abandoned mine 1, so that the sand on the surface of the abandoned mine 1 can be wrapped, and the problem of sand loss can be effectively prevented.
Wherein the strengthening of the surface runoff of the abandoned mine 1 to prevent infiltration of surface water into the abandoned mine 1 comprises:
Adding a surface curing agent to the abandoned mine 1;
A rainwater reservoir is arranged on the abandoned mine 1. The rainwater reservoirs are arranged in the height direction and the circumferential direction of the mine waste 1. Through above-mentioned rainwater cistern can collect the rainwater effectively, prevent rainwater infiltration mine 1 inside.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations are within the scope of the invention as defined by the appended claims.
Claims (9)
1. An ecological restoration method for an ionic rare earth in-situ leaching abandoned mine is characterized by comprising the following steps:
reinforcing the surface runoff of the abandoned mine (1) to prevent the infiltration of surface water into the abandoned mine (1);
Planting plants on the surface of the abandoned mine (1) to form a covering and blocking surface layer (2) on the surface of the abandoned mine (1) so as to prevent soil loss;
An intermediate stabilizing layer for preventing soil loss is arranged on the abandoned mine (1); the arrangement of an intermediate stabilizing layer for preventing soil loss on the mine waste (1) comprises the following steps: arranging a sand fixing net (5) for preventing sand loss on the surface and in the depth direction of the abandoned mine (1);
constructing a permeable reactive barrier (3) at the bottom of the mine waste (1) to prevent the overflow of the leachate of the mine waste (1);
a sediment buffer zone (4) is arranged between the abandoned mine (1) and the permeable reactive barrier (3);
Collecting and treating the residual liquid from the abandoned mine (1); the collecting and treating of the residual liquid from the abandoned mine (1) comprises the following steps: and injecting clean water into the abandoned mine (1) to enable the residual liquid to seep out from the abandoned mine (1) and flow to the permeable reactive barrier (3) so as to be adsorbed by the permeable reactive barrier (3).
2. The method for the ecological restoration of an ionic rare earth in-situ leaching waste mine according to claim 1, characterized in that the collection treatment of the residual liquid from the waste mine (1) comprises the following steps:
extracting a residual liquid in the abandoned mine (1);
Carrying out rare earth precipitation treatment on the residual liquid;
And carrying out adsorption treatment on the residual liquid.
3. The method for restoring ecology of an ionic rare earth in-situ leaching waste mine according to claim 1, wherein the sand fixation net (5) is arranged at the edge position of a fully weathered layer (6) of the waste mine (1).
4. The method of in-situ leaching of rare earth from a mine waste ecological restoration according to claim 1, wherein the strengthening of the surface runoff of the mine waste (1) to prevent infiltration of surface water into the interior of the mine waste (1) comprises:
Adding a surface curing agent to the abandoned mine (1);
At least one rainwater reservoir is arranged on the abandoned mine (1).
5. An ionic rare earth in-situ leaching waste mine ecological restoration system, applied to the ionic rare earth in-situ leaching waste mine ecological restoration method as set forth in any one of claims 1 to 4, characterized by comprising:
Plants planted on the surface of the abandoned mine (1);
The sand fixing net (5) is arranged on the surface and in the depth direction of the abandoned mine (1) and used for preventing sand loss;
A permeable reactive barrier (3) disposed at the bottom of the mine (1), the permeable reactive barrier (3) being configured to prevent overflow of leachate from the mine (1);
and a sediment buffer zone (4) arranged between the mountain of the abandoned mine (1) and the permeable reactive barrier (3).
6. The system for restoring ecology in an in-situ leaching and mining waste mine of claim 5, wherein the permeable reactive barrier (3) comprises an upper portion (9) located above the ground surface and a lower portion (10) located within the soil of the ground surface.
7. The ecological restoration system for the ion type rare earth in-situ leaching and mining waste mine as claimed in claim 5, wherein an adsorption material for adsorbing pollutants in the percolate is arranged between grids of the sand fixation net (5).
8. The ionic rare earth in-situ leaching waste mine ecological restoration system according to claim 7, wherein the adsorption material is zeolite and/or bentonite.
9. The system for restoring ecology in-situ leaching and mining waste mines according to claim 5, wherein the sediment buffer (4) is a slope inclined at an angle of 0 to 30 degrees with respect to the horizontal plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425806.8A CN110424364B (en) | 2019-05-21 | 2019-05-21 | Ecological restoration method and restoration system for ion type rare earth in-situ leaching abandoned mine |
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| CN201910425806.8A CN110424364B (en) | 2019-05-21 | 2019-05-21 | Ecological restoration method and restoration system for ion type rare earth in-situ leaching abandoned mine |
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| CN110424364B true CN110424364B (en) | 2024-05-17 |
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| CN110637668B (en) * | 2019-11-13 | 2024-05-28 | 江西省环境保护科学研究院 | Structure and method for three-dimensional restoration of slope soil in ionic rare earth abandoned mining area |
| CN113875509A (en) * | 2021-08-23 | 2022-01-04 | 中南林业科技大学 | Ecological restoration structure and method for rapid greening of slope of mountain wind power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923544A (en) * | 2015-06-11 | 2015-09-23 | 湖南艾布鲁环保科技有限公司 | Heavy metal dangerous waste in-situ storage and underground water pollution prevention method |
| CN106664863A (en) * | 2016-12-14 | 2017-05-17 | 广东中联兴环保科技有限公司 | Method for reducing outward output of pollutants from ionic type rare earth ore mining site |
| CN106818167A (en) * | 2017-01-22 | 2017-06-13 | 福建农林大学 | A kind of method for administering the discarded ground of khoai in-situ ionic rare earth leaching ore deposit |
| CN106900196A (en) * | 2017-02-28 | 2017-06-30 | 江西省环境保护科学研究院 | Discarded rare-earth mining area Soil Slope is three-dimensional to repair ecological net and its maintenance process |
| CN210684649U (en) * | 2019-05-21 | 2020-06-05 | 中节能大地环境修复有限公司 | Ecological recovery system for ionic rare earth in-situ leaching abandoned mine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104923544A (en) * | 2015-06-11 | 2015-09-23 | 湖南艾布鲁环保科技有限公司 | Heavy metal dangerous waste in-situ storage and underground water pollution prevention method |
| CN106664863A (en) * | 2016-12-14 | 2017-05-17 | 广东中联兴环保科技有限公司 | Method for reducing outward output of pollutants from ionic type rare earth ore mining site |
| CN106818167A (en) * | 2017-01-22 | 2017-06-13 | 福建农林大学 | A kind of method for administering the discarded ground of khoai in-situ ionic rare earth leaching ore deposit |
| CN106900196A (en) * | 2017-02-28 | 2017-06-30 | 江西省环境保护科学研究院 | Discarded rare-earth mining area Soil Slope is three-dimensional to repair ecological net and its maintenance process |
| CN210684649U (en) * | 2019-05-21 | 2020-06-05 | 中节能大地环境修复有限公司 | Ecological recovery system for ionic rare earth in-situ leaching abandoned mine |
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