浅埋煤层保水开采的研究进展

Study Progress of Shallow Seam Mining with Water Resource Preservation

分析了陕北榆神府矿区浅埋煤层保水开采的水文及工程地质条件,对砂基型保水开采地质条件进行了分类,推导出浅埋煤层导水裂隙发展计算公式;通过一系列不同地质条件下的"固—液"耦合相似材料模拟实验,得出了不同砂基型条件下及河流下的间歇式保水开采参数;建立了保水煤柱稳定性分析的三维数值模拟模型,计算了煤柱和基岩保护层的稳定性。通过地质分析、实验研究、数值模拟,对榆神府矿区实行保水开采的可行性进行了综合分析。

This paper analyzed the hydrogeological and engineering geological conditions for shallow seam mining with water resource preservation in Yushenfu Coal Mining Area in Shaanxi Province, classified the hydrogeological conditions in the water resource preservation mining area covered with sand and thick soil layer, and derived the development formula for water conducted cracks in shallow seam. Through a series of simulation experiments with solid -liquid coupling similarity material under different geologic conditions, the mining parameters for intermission water resource conservation under different sand layers and river were obtained. A three -dimensional numerical simulation model for analyzing the stability of water conservation pillar was set up and the stability of coal pillar and the protective layer of basemen rock was calculated. On the basis of geologic analysis, experimental study and numerical simulation, comprehensive analysis on the feasibility of water resource conversation mining in Yushenfu Coal Mining Area was conducted.