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A platform for research: civil engineering, architecture and urbanism
Technical method for preventing and treating heavy metal pollution of underground water by backfilling underground goaf of mine
The invention relates to a technical method for preventing and treating heavy metal pollution of underground water by backfilling an underground goaf of a mine. The method comprises the following steps of S1, covering a piece of mesh cloth on the surface of an exposed rock mass of the goaf and fixing the mesh cloth with a plurality of nails; S2, spraying an adsorption material on the screen cloth so as to form an adsorption material layer on the surface of the exposed rock mass in the ore goaf area; S3, covering the surface of the adsorption material layer with cloth, and fixing with a plurality of nails to form a cloth layer; and S4, spraying concrete on the cloth layer by adopting a spraying process and covering the cloth layer to form a concrete layer. According to the technical method, heavy metal ions on the surface of the bare rock mass and in underground water are adsorbed, passivated and stabilized by means of the adsorption material layer, the adsorption material layer is effectively protected by arranging the mesh cloth and the concrete layer, the service life is remarkably prolonged, and then heavy metal elements on the surface of the bare rock mass can be effectively prevented from being dissolved in the underground water, therefore, heavy metal pollution in a downstream area is thoroughly avoided, and the underground water environment and resident health are protected.
本发明涉及一种矿山井下采空区回填对地下水重金属污染的防治技术方法，包括以下步骤：S1：在采空区裸露岩体的表面覆盖一张网布并用多个钉子固定；S2：在网布上喷涂吸附材料以在矿石采空区域的裸露岩体表面形成吸附材料层；S3：在吸附材料层表面覆盖布料并用多个钉子固定以形成布料层；S4：采用喷涂工艺将混凝土喷射在布料层上并覆盖住布料层以形成混凝土层；本发明借助吸附材料层来吸附、钝化、稳定化裸露岩体表面及地下水中的重金属离子，而且通过设置网布和混凝土层有效保护了吸附材料层以显著延长了使用寿命，进而能有效防止裸露岩体表面上的重金属元素溶解到地下水中，从而彻底避免了下游区域发生重金属污染，保护地下水环境及居民健康。
Technical method for preventing and treating heavy metal pollution of underground water by backfilling underground goaf of mine
The invention relates to a technical method for preventing and treating heavy metal pollution of underground water by backfilling an underground goaf of a mine. The method comprises the following steps of S1, covering a piece of mesh cloth on the surface of an exposed rock mass of the goaf and fixing the mesh cloth with a plurality of nails; S2, spraying an adsorption material on the screen cloth so as to form an adsorption material layer on the surface of the exposed rock mass in the ore goaf area; S3, covering the surface of the adsorption material layer with cloth, and fixing with a plurality of nails to form a cloth layer; and S4, spraying concrete on the cloth layer by adopting a spraying process and covering the cloth layer to form a concrete layer. According to the technical method, heavy metal ions on the surface of the bare rock mass and in underground water are adsorbed, passivated and stabilized by means of the adsorption material layer, the adsorption material layer is effectively protected by arranging the mesh cloth and the concrete layer, the service life is remarkably prolonged, and then heavy metal elements on the surface of the bare rock mass can be effectively prevented from being dissolved in the underground water, therefore, heavy metal pollution in a downstream area is thoroughly avoided, and the underground water environment and resident health are protected.
本发明涉及一种矿山井下采空区回填对地下水重金属污染的防治技术方法，包括以下步骤：S1：在采空区裸露岩体的表面覆盖一张网布并用多个钉子固定；S2：在网布上喷涂吸附材料以在矿石采空区域的裸露岩体表面形成吸附材料层；S3：在吸附材料层表面覆盖布料并用多个钉子固定以形成布料层；S4：采用喷涂工艺将混凝土喷射在布料层上并覆盖住布料层以形成混凝土层；本发明借助吸附材料层来吸附、钝化、稳定化裸露岩体表面及地下水中的重金属离子，而且通过设置网布和混凝土层有效保护了吸附材料层以显著延长了使用寿命，进而能有效防止裸露岩体表面上的重金属元素溶解到地下水中，从而彻底避免了下游区域发生重金属污染，保护地下水环境及居民健康。
Technical method for preventing and treating heavy metal pollution of underground water by backfilling underground goaf of mine
一种矿山井下采空区回填对地下水重金属污染的防治技术方法
DONG GUIHAI (author) / SHEN HAOJIE (author) / LI LI (author) / TONG DEKAI (author) / LIN GUANSHENG (author)
2021-12-31
Patent
Electronic Resource
Chinese
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