外来系地层下开采覆岩裂高发育特征研究

The rule of water flowing fracture zone in overlying rock with mining under thrust block

以新集二矿外来系地层下13 1煤1307试采面开采的覆岩组合特征及工程地质特征分析、覆岩破坏理论研究和井下电法成像观测验证, 初步总结出外来系地层下13 1煤开采覆岩裂高发育特征。为以后13 1煤开采时, 防水煤岩柱的合理留设提供可靠的理论和实践依据。

This paper analyses the combined character of overlying rock and engineering geological character in 1307 working face under thrust block, in Xinji Second coal mine. Author studied failure theory of overlying rock, summarized the rule of water flowing fracture zone in overlying rock under thrust block, validated by imaging observation with electrical method. This paper provides reliable academic and practical gist for reasonably remain waterproof coal pillar when mining 13 1 coal seam.