Composite protection structure of surface mine underground water layer

A technology for protecting structures and groundwater, which is applied in open-pit mining, coastline protection, dams, etc., can solve problems such as lowering of water levels and destruction of surrounding ecosystems, and achieve the effect of avoiding secondary pollution

Active Publication Date: 2021-08-13
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a composite protective structure for the underground water layer of an open-pit mine, which solves the problem that the open-pit mining process in the prior art causes the water level to decrease and the surrounding ecological system to be severely damaged

Method used

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  • Composite protection structure of surface mine underground water layer
  • Composite protection structure of surface mine underground water layer
  • Composite protection structure of surface mine underground water layer

Examples

Experimental program
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Effect test

Embodiment 1

[0055] The present invention relates to a composite protective structure for the underground water layer of an open-pit mine, comprising a side slope 1, an anti-seepage pit 2 dug downward at the position of the lowest water level of the side slope 1, the inside of the anti-seepage pit 2 is filled with clay, and the foot of the side slope 1 A dam body 3 is built outward, a clay layer 5 is filled between the dam body 3 and the side slope 1, a soil slope layer 6 is filled between the clay layer 5 and the side slope 1, and the inner slope surface of the dam body 3 and the soil slope 6 A first anti-seepage layer 4 is arranged between the layer and the clay layer 5 .

[0056]The specifications of the anti-seepage pit 2: 1.5m×1.5m×1.5m, the interior of the anti-seepage pit 2 is filled with clay, the inner wall is laid with a second anti-seepage layer 8, the second anti-seepage layer 8 has the same structure as the first anti-seepage layer 4 .

[0057] The clay layer 5 is 1m higher t...

Embodiment 2

[0064] The present invention is a kind of composite protective structure of underground water layer in open-pit mine, such as figure 1 As shown, including side slope 1, the lowest water level of side slope 1 is dug downward with anti-seepage pit 2, the inside of anti-seepage pit 2 is filled with clay, and the foot of side slope 1 is built with dam body 3 outward, and the dam body 3 and side slope 1 is filled with clay layer 5, between clay layer 5 and side slope 1 is filled with soil slope layer 6, and the inner slope surface of dam body 3 and between soil slope 6 layer and clay layer 5 are provided with a second A seepage-proof layer 4 .

[0065] Anti-seepage pit 2 specification: 2m * 5m * 3m, the inside of anti-seepage pit 2 is filled with clay, and inwall is laid with the second anti-seepage layer 8, and the second anti-seepage layer 8 is identical with the first anti-seepage layer 4 structures.

[0066] The clay layer 5 is 2m higher than the original water level.

[0067...

Embodiment 3

[0073] The present invention is a kind of composite protective structure of underground water layer in open-pit mine, such as figure 1 As shown, including side slope 1, the lowest water level of side slope 1 is dug downward with anti-seepage pit 2, the inside of anti-seepage pit 2 is filled with clay, and the foot of side slope 1 is built with dam body 3 outward, and the dam body 3 and side slope 1 is filled with clay layer 5, between clay layer 5 and side slope 1 is filled with soil slope layer 6, and the inner slope surface of dam body 3 and between soil slope 6 layer and clay layer 5 are provided with a second A seepage-proof layer 4 .

[0074] Anti-seepage pit 2 specifications: 2m * 4m * 2m, the inside of anti-seepage pit 2 is filled with clay, and inwall is laid with the second anti-seepage layer 8, and the second anti-seepage layer 8 is identical with the first anti-seepage layer 4 structures.

[0075] The clay layer 5 is 1.5m higher than the original water level.

[0...

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Abstract

The invention discloses a composite protection structure of a surface mine underground water layer. The composite protection structure comprises a side slope, wherein an anti-seepage pit is dug downwards in the lowest water line position of the side slope; clay is filled inside the anti-seepage pit; a dam body is built outwards at the slope toe of the side slope; a clay layer is filled between the dam body and the side slope; a soil slope layer is filled between the clay layer and the side slope; an anti-seepage layer is arranged on the inner slope surface of the dam body and the inner wall of the anti-seepage pit; and an anti-seepage layer is paved between the soil slope layer and the clay layer. The composite protection structure has the advantages that the funnel effect generated by surface mining can be reduced; the phenomenon of the water level of the peripheral underground water layer is reduced; on the basis of recovering the underground water layer, the damage of surface mining on water resources is reduced as much as possible; and by aiming at the ecological fragile region, the destructive damage on the water resources and the ecological system can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection, and relates to a composite protection structure for underground water layers in open-pit mines. Background technique [0002] In open-pit mining, a large amount of rock and soil stripping and ore mining have caused serious damage to the aquifer around the open-pit stope. The power pump pumps to the surface for discharge. In this process, it will cause damage to the environment in two aspects: on the one hand, the original groundwater layer will be destroyed, causing the water level around the mining area to drop, which will affect the surrounding ecosystem; In the process of pumping out, the original water resources have been polluted and discharged to the surface to further pollute the environment, cause secondary pollution, and further affect the surrounding ecological environment. Contents of the invention [0003] The purpose of the present invention is to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/10E02B3/12E02B3/16E21C47/10
CPCE02B3/10E02B3/12E02B3/16E21C47/10Y02A10/11
Inventor 吕金星
Owner CHINA UNIV OF MINING & TECH
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