Safety analysis and water prevention and control technology of coal mining under rivers in Tianzhu Coal Mine

HUANG Hao; FANG Gang; LIANG Xiangyang; LIU Yang

Safety in Coal Mines > 2021 > 52(2): 113-120.

HUANG Hao, FANG Gang, LIANG Xiangyang, LIU Yang. Safety analysis and water prevention and control technology of coal mining under rivers in Tianzhu Coal Mine[J]. Safety in Coal Mines, 2021, 52(2): 113-120.

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Safety analysis and water prevention and control technology of coal mining under rivers in Tianzhu Coal Mine

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Published Date: February 19, 2021

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Abstract

Abstract

Taking 3200 working face of Tianzhu Coal Mine as an example, by analyzing the geological and hydrogeological conditions of the mine, the main water filling source and water filling channel of the mining face are determined. Combined with the measured results of previous surface movement deformation, the surface collapse caused by mining 3200 working face was predicted, so as to judge the degree of surface rivers affected by mining. The results show that the sandstone aquifer of the Jurassic Xinhe Formation, the aquifer of the weathered oxidation zone, the Quaternary loose layer and the surface river are the main filling water sources after the mining 3200 working face. The main water-filling channels are the water flowing fractured zone and the closed bad borehole. After mining, surface collapse and deformation, Jinsha River will pose a threat to the working face incision within the range of 0-300 m. Combined with the actual situation on the site, this paper proposes some protection measures of water prevention and control for the working face before and after the mining process.
- Jurassic coalfield,
- coal mining under rivers,
- water filling conditions,
- safety analysis,
- prevention and control measures

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