新兴煤矿工作面冲击地压发生机理研究

Study on Mine Pressure Bumping Mechanism of Coal Mining Face in Xinxing Mine

针对新兴煤矿41051工作面发生的冲击地压事故,通过分析新兴煤矿的地质条件,确定了新兴煤矿发生冲击地压的影响因素。同时针对该矿采用的沿空巷道留设煤柱的特殊采煤方式,运用FLAC3D软件进行数值模拟,对工作面附近区域的煤体应力分布进行了分析,发现由于煤柱的留设,使得工作面上部区域的应力集中程度较高,为冲击地压发生的危险区域。通过模拟和分析地质因素及采煤方式,提出了针对该工作面的有效解决方案。

According to the mine pressure bumping accident occurred in No.41051 coal mining face of Xinxing Mine,with the analysis on the geological conditions of the Xinxing Mine,the influence factors of the mine pressure bumping occurred in the Xinxing Mine were set up.Meanwhile,according to the special mining method with the coal pillar left in the gateway retained along the goaf in the mine,the FLAC3D software was applied to the numerical simulation.An analysis was conducted on the seam stress distribution in the area near the coal mining face.Due to the coal pillars left,the stress concentration degree in the upward area of the coal mining face would be high and the upward area would be a danger area to occur the mine pressure bumping.With the simulation and analysis on the geological factors and coal mining methods,an effective solution to the coal mining face was proposed.