司马煤矿薄基岩区导水裂隙带发育规律

发布时间：2018-04-27 15:00

本文选题：薄基岩 + 导水裂隙带　；参考：《煤矿安全》2015年03期

【摘要】：为了得出司马煤矿薄基岩区导水裂隙带的发育规律,首先对薄基岩分布特征及岩层力学特性进行了分析,进而利用经验公式计算出了导水裂隙带发育高度,同时运用数值计算软件RFPA2D对煤层开采进行了模拟。结果表明:司马煤矿3#煤层薄基岩总体趋势为一向斜,局部有小的隆起和凹陷,薄基岩厚度变化范围在30~80 m;3#煤层上覆的整个基岩柱的强度大于40 MPa,属于坚硬型;经验公式计算得到司马矿3#煤层薄基岩导水裂隙带发育高度在47.3~83.5 m之间,与数值模拟得到的最大发育高度85 m基本相符。
[Abstract]:In order to obtain the development rule of the water-conducting fissure zone in Sima coal mine, the distribution characteristics of thin bedrock and the mechanical characteristics of rock layer are analyzed, and the height of the water-conducting fissure zone is calculated by using empirical formula. At the same time, the numerical calculation software RFPA2D is used to simulate the coal seam mining. The results show that the general trend of thin bedrock in the seam of Sima coal mine is always inclined, with small uplift and depression, and the thickness of thin bedrock varies in the coal seam of 300.80mHM, the strength of the whole bedrock column is more than 40MPa, which belongs to the hard type. The developed height of water-conducting fissure zone of coal seam in the seam of Sima Mine is 47.3 ~ 83.5 m, which is basically consistent with the maximum height of 85 m obtained by numerical simulation.
【作者单位】：中国矿业大学深部岩土力学与地下工程国家重点实验室;中国矿业大学力学与建筑工程学院;
【基金】：国家自然科学基金资助项目(50974115) 国家重点基础研究发展计划(973计划)资助项目(2013CB227900)
【分类号】：TD745

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