矿区大采高综采覆岩“两带”发育特征研究

    Research on the development characteristics of the “two zones” of overburden rock in the large mining height fully mechanized mining area

    • 摘要: 本文针对店坪煤矿9−204工作面开展了覆岩“两带”探测研究。采用电阻率动态监测法、双端封堵分段注水观测法和覆岩破坏电阻率动态监测法对9−204工作面顶板冒落带和导水裂隙带发育情况进行了综合探测,分析了三种方法的探测结果。基于概率积分法,讨论了大采高开采条件下地表沉陷特征与“两带”发育高度的关系。结合9−201工作面地质条件,设计了地表岩移观测站布设方案。本文研究结果可为矿区后续采高提升后采动预测与地表保护提供借鉴。

       

      Abstract: This paper conducts a study on the exploration of the “two zones” of overburden rock in the 9−204 working face of Dianping Coal Mine. A comprehensive exploration is conducted on the development of the roof caving zone and water conducting fracture zone in the 9−204 working face using the dynamic monitoring method of resistivity, the segmented water injection observation method with double end sealing, and the dynamic monitoring method of overburden failure resistivity. The detection results of the three methods are analyzed. Based on the probability integral method, the relationship between surface subsidence characteristics and the development height of the “two zones” under high mining conditions is discussed. A layout plan for surface rock movement observation stations is designed based on the geological conditions of the 9−201 working face. The research results can provide reference for the prediction of mining activities and surface protection after the subsequent elevation of mining areas.

       

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