Evaluation of Water Inrush Vulnerability from Aquifers Overlying Coal Seams in the Menkeqing Coal Mine, China

International journal of mine water - Tập 34 - Trang 258-269 - 2014
Qiang Wu1, Yuanzhang Liu2, Wanfang Zhou3, Baoyu Li1, Bin Zhao1, Shouqiang Liu1, Wenjie Sun1, Yifan Zeng1
1China Univ of Mining and Technology, Beijing, China
2Beijing Institute of Hydrogeology and Engineering Geology, Beijing, China
3ERT, Inc, Knoxville, USA

Tóm tắt

The vulnerability of the C2-1 and C3-1 coal seams to water inrush from overlying aquifers was evaluated for a portion of the Menkeqing coal mine. Geological and hydrogeological data were used to develop a conceptual model. Using the ‘three maps-two predictions’ method, an index model of water abundance (yield) of the overlying aquifers was constructed and overlain on a map that indicates potential fractured zone connections to the overlying aquifers. Superposition of the two zoning maps allowed development of a comprehensive inrush vulnerability map. Mine discharges were predicted under both natural and mining conditions using Visual Modflow, and appropriate prevention and control measures are proposed.

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