CN113863270A - Technical method for preventing and treating heavy metal pollution of underground water by backfilling mine underground goaf - Google Patents
Technical method for preventing and treating heavy metal pollution of underground water by backfilling mine underground goaf Download PDFInfo
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- CN113863270A CN113863270A CN202111222087.3A CN202111222087A CN113863270A CN 113863270 A CN113863270 A CN 113863270A CN 202111222087 A CN202111222087 A CN 202111222087A CN 113863270 A CN113863270 A CN 113863270A
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- cloth
- heavy metal
- layer
- underground water
- adsorption material
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- 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
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
Abstract
The invention relates to a technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine, which comprises the following steps: s1: covering a piece of screen cloth on the surface of the exposed rock mass in the goaf and fixing the screen cloth by a plurality of nails; s2: spraying an adsorption material on the mesh cloth to form an adsorption material layer on the exposed rock mass surface of the ore mining area; s3: covering cloth on the surface of the adsorption material layer and fixing the cloth by a plurality of nails to form a cloth layer; s4: spraying concrete on the cloth layer by adopting a spraying process and covering the cloth layer to form a concrete layer; the invention adsorbs, passivates and stabilizes heavy metal ions on the surface of the exposed rock mass and in the underground water by virtue of the adsorption material layer, and effectively protects the adsorption material layer by arranging the mesh cloth and the concrete layer so as to obviously prolong the service life, thereby effectively preventing heavy metal elements on the surface of the exposed rock mass from being dissolved in the underground water, thoroughly avoiding heavy metal pollution in a downstream area and protecting the underground water environment and the health of residents.
Description
Technical Field
The invention relates to a technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine.
Background
After the underground ore bed of the underground ore layer of many nonferrous metal mines is mined and excavated, the ore rock mass in the goaf is destroyed, a large amount of rocks on the surface of the ore are exposed, and a large amount of waste slag and rock mass are accumulated; at present, no effective control technical method exists for solving the serious problems, and a solution is urgently needed.
Disclosure of Invention
In view of the current situation of the prior art, the technical problem to be solved by the invention is to provide a technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine, which can effectively prevent heavy metal elements on the surface of an exposed rock mass from being dissolved in the underground water, thereby thoroughly avoiding heavy metal pollution in a downstream area, protecting the environment of the underground water and the health of residents, and having a long service life.
The technical scheme adopted by the invention for solving the technical problems is as follows: a technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine is characterized by comprising the following steps of:
s1: covering a piece of screen cloth on the surface of the exposed rock mass in the goaf and fixing the screen cloth by a plurality of nails;
s2: spraying an adsorption material on the mesh cloth to form an adsorption material layer on the exposed rock mass surface of the mined-out area;
s3: covering cloth on the surface of the adsorption material layer and fixing the cloth by a plurality of nails to form a cloth layer;
s4: and spraying concrete on the cloth layer by adopting a spraying process and covering the cloth layer to form a concrete layer so as to further enable the adsorption material layer to be hardened firmly.
Preferably, the thickness of the adsorption material layer in the step S2 is 5-10 cm.
Preferably, the adsorbing material in step S2 is a ceramic nanomaterial.
Preferably, the mesh cloth in the step S1 is a steel mesh or a flexible fiber mesh.
Preferably, the thickness of the concrete layer in the step S4 is 5-10 cm.
Compared with the prior art, the invention has the advantages that: the invention adsorbs, passivates and stabilizes heavy metal ions on the surface of the exposed rock mass and in the underground water by virtue of the adsorption material layer, and effectively protects the adsorption material layer by arranging the mesh cloth and the concrete layer so as to obviously prolong the service life, thereby effectively preventing heavy metal elements on the surface of the exposed rock mass from being dissolved in the underground water, thoroughly avoiding heavy metal pollution in a downstream area and protecting the underground water environment and the health of residents.
Drawings
FIG. 1 is a cross-sectional structure view of the exposed rock mass, the mesh cloth, the adsorption material layer, the cloth layer and the concrete layer of the invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
As shown in figure 1, a technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine well comprises the following steps:
s1: covering a mesh cloth 3 on the surface of the exposed rock mass 1 in the goaf and fixing the mesh cloth by a plurality of nails 2, wherein the mesh cloth is a steel wire mesh or a flexible fiber mesh;
s2: spraying an adsorption material on the mesh cloth 3 to form an adsorption material layer 5 on the surface of the exposed rock mass 1 in the mined-out area, wherein the thickness of the adsorption material layer 5 is 5-10 cm, and the adsorption material can be made of ceramic nano materials;
s3: covering a plurality of cloth materials on the surface of the adsorption material layer 5 and fixing the cloth materials by a plurality of nails 2 to form a cloth material layer 6;
s4: spraying concrete on the cloth layer 6 by adopting a spraying process and covering the cloth layer 6 to form a concrete layer 4 so as to further enable the adsorption material layer 5 to be firmly hardened; the thickness of the concrete layer 4 is determined according to the situation of the peripheral rock stratum, and is generally 5-10 cm;
the working principle is as follows: when the underground water level rises to a certain height and submerges the exposed rock mass 1 of the ore mining area, heavy metal elements remained on the surface of the exposed rock mass 1 are dissolved, but due to the existence of the adsorption material layer 5, the heavy metal elements in the underground water are adsorbed and passivated by the adsorption material, so that the heavy metal elements are effectively prevented from diffusing and polluting downstream through the underground water body; the mesh cloth 3 can effectively prevent the adsorption material in the adsorption material layer 5 from collapsing due to long-time immersion of underground water; the concrete layer 4 can effectively prevent water erosion and scouring while preventing external falling rocks from striking the adsorbent material layer 5.
According to the invention, heavy metal ions on the surface of the exposed rock mass and in the underground water are adsorbed, passivated and stabilized by virtue of the adsorption material layer 5, and the adsorption material layer 5 is effectively protected by arranging the mesh cloth 3 and the concrete layer 4, so that the service life is obviously prolonged, and further, heavy metal elements on the surface of the exposed rock mass 1 can be effectively prevented from being dissolved in the underground water, so that heavy metal pollution in a downstream area is thoroughly avoided, and the underground water environment and the health of residents are protected.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A technical method for preventing and treating heavy metal pollution of underground water by backfilling a mined-out area in a mine is characterized by comprising the following steps of:
s1: covering a piece of screen cloth on the surface of the exposed rock mass in the goaf and fixing the screen cloth by a plurality of nails;
s2: spraying an adsorption material on the mesh cloth to form an adsorption material layer on the exposed rock mass surface of the mined-out area;
s3: covering cloth on the surface of the adsorption material layer and fixing the cloth by a plurality of nails to form a cloth layer;
s4: and spraying concrete on the cloth layer by adopting a spraying process and covering the cloth layer to form a concrete layer so as to further enable the adsorption material layer to be hardened firmly.
2. The technical method for preventing and treating heavy metal pollution of underground water by backfilling mined-out areas in a mine well according to claim 1, wherein the thickness of the adsorption material layer in the step S2 is 5-10 cm.
3. The technical method for preventing and treating heavy metal pollution of underground water by backfilling mined-out areas in a mine according to claim 1, wherein the adsorbing material in the step S2 is a ceramic nano material.
4. The technical method for preventing and treating heavy metal pollution of underground water by backfilling mined-out areas in a mine well according to claim 1, wherein the mesh cloth in the step S1 is a steel wire mesh or a flexible fiber mesh.
5. The technical method for preventing and treating heavy metal pollution of underground water by backfilling mined-out areas in a mine well according to claim 1, wherein the thickness of the concrete layer in the step S4 is 5-10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222087.3A CN113863270A (en) | 2021-10-20 | 2021-10-20 | Technical method for preventing and treating heavy metal pollution of underground water by backfilling mine underground goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222087.3A CN113863270A (en) | 2021-10-20 | 2021-10-20 | Technical method for preventing and treating heavy metal pollution of underground water by backfilling mine underground goaf |
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| Publication Number | Publication Date |
|---|---|
| CN113863270A true CN113863270A (en) | 2021-12-31 |
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| CN202111222087.3A Pending CN113863270A (en) | 2021-10-20 | 2021-10-20 | Technical method for preventing and treating heavy metal pollution of underground water by backfilling mine underground goaf |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070077570A (en) * | 2006-01-24 | 2007-07-27 | 에코랜드 주식회사 | The contaminant control type reactive shotcrete, reactive spray protection mat, and reactive spray lining mat materials and the method and the system thereof |
| CN107552559A (en) * | 2017-10-13 | 2018-01-09 | 中节能工程技术研究院有限公司 | The restoration of the ecosystem structure and method on a kind of discarded ground of Acid mine |
| CN108590751A (en) * | 2018-06-26 | 2018-09-28 | 中南大学 | A kind of mine down-hole tailings water in-situ treatment method and permeable reaction filling counterfort |
| CN210946834U (en) * | 2019-09-10 | 2020-07-07 | 宁国市东南木纤维科技有限公司 | Immersed net type ecological slope protection structure for mine restoration |
| AU2020103957A4 (en) * | 2020-12-08 | 2021-02-11 | Jiangxi Academy Of Environmental Sciences | Three-dimensional ecological network for soil remediation in abandoned rare earth mine area and maintenance method thereof |
-
2021
- 2021-10-20 CN CN202111222087.3A patent/CN113863270A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070077570A (en) * | 2006-01-24 | 2007-07-27 | 에코랜드 주식회사 | The contaminant control type reactive shotcrete, reactive spray protection mat, and reactive spray lining mat materials and the method and the system thereof |
| CN107552559A (en) * | 2017-10-13 | 2018-01-09 | 中节能工程技术研究院有限公司 | The restoration of the ecosystem structure and method on a kind of discarded ground of Acid mine |
| CN108590751A (en) * | 2018-06-26 | 2018-09-28 | 中南大学 | A kind of mine down-hole tailings water in-situ treatment method and permeable reaction filling counterfort |
| CN210946834U (en) * | 2019-09-10 | 2020-07-07 | 宁国市东南木纤维科技有限公司 | Immersed net type ecological slope protection structure for mine restoration |
| AU2020103957A4 (en) * | 2020-12-08 | 2021-02-11 | Jiangxi Academy Of Environmental Sciences | Three-dimensional ecological network for soil remediation in abandoned rare earth mine area and maintenance method thereof |
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