Open pit coal mine underground reservoir
A technology of underground reservoirs and open-pit coal mines, applied in mining equipment, mining equipment, earthwork drilling and mining, etc., can solve environmental pollution and other problems, achieve the effect of avoiding water resources, avoiding environmental pollution, and realizing water conservation mining strategies
Active Publication Date: 2014-11-05
CHINA SHENHUA ENERGY CO LTD
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Problems solved by technology
However, the existing underground reservoirs cannot meet the needs of filtering and purifying polluted water sources. Therefore, the polluted water sources in the coal mining process are directly discharged or stored without purification treatment, which seriously pollutes the environment.
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[0019] A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, the present invention provides an underground water reservoir for an open-pit coal mine, comprising a water-resistant layer 1 and a water storage space and a purification layer arranged below the water-resistant layer 1, preferably, the thickness of the water-resistant layer 1 is greater than 50 cm , the permeability coefficient is less than 10 -4 cm / s.
[0021] In consideration of saving cost, the water-resisting layer 1 is preferably composed of one or more materials in soil, mudstone, siltstone and fine sandstone, which are used in the open-pit coal mining process. The stripped material can effectively save the construction cost of the underground reservoir. Of course, soil, mudstone, siltstone and fine sandstone are only the preferred water-resisting layer materials in this embodiment, and other mater...
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The invention discloses an open pit coal mine underground reservoir which comprises a water-resisting layer, and a water storage space and a purification layer that are arranged under the water-resisting layer, wherein the water storage space comprises a first water storage space and a second water storage space; the first water storage space is horizontally arranged under the water-resisting layer, and the second water storage space is vertically arranged at the bottom of the open pit coal mine underground reservoir; the purification layer comprises a first purification layer and a second purification layer, wherein the first purification layer is horizontally arranged under the first water storage space; and the second purification layer is vertically arranged in the second water storage space. After the open pit coal mine underground reservoir is adopted, the water resource produced in the coal mining process can be avoided being wasted; the purification layer is arranged in the open pit coal mine underground reservoir, so that the water can be purified for a plurality of times; and therefore, the environmental pollution is avoided, and water retention exploitation strategy can be realized in the coal mining process.
Description
technical field [0001] The invention relates to a water reservoir, in particular to an underground water reservoir of an open-pit coal mine. Background technique [0002] During the mining process of open-pit coal mines, a large amount of water needs to be pumped and drained to ensure smooth production. At present, the pumping and drainage of coal mines is mainly for external drainage, which has caused a serious waste of water resources. In addition, the underground reservoir used for pumping and drainage storage in open-pit coal mines is different from the previous underground reservoirs. It not only needs to build underground space for water storage, but also needs to have filtering and purification functions, so as to filter and purify the polluted water generated during the coal mining process. . However, the existing underground reservoirs cannot meet the needs of filtering and purifying polluted water sources. Therefore, the polluted water sources in the coal mining p...
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IPC IPC(8): E21F17/16
Inventor 顾大钊
Owner CHINA SHENHUA ENERGY CO LTD