【摘要】 采用岩土工程有限差分法分析软件FLAC-3D对深部支承压力分布规律进行模拟。通过对比分析模拟结果得知,深部煤层的支承压力分布规律与煤层采高和工作面长度有关,开采煤层越厚,支承压力峰值点在工作面前方距离越大,而支承压力集中系数越小;推进工作面长度越长,支承压力集中系数、峰值点在工作面前方距离越大。这些规律对巷道支护形成的确定、防治煤岩动力灾害等有一定的指导意义。更多还原

【Abstract】 Using finite difference method Analysis Software FLAC-3D,the distribution law of the supporting pressure of deep coal seams is numerically simulated.It is obtained that the distribution law of the supporting pressure of deep coal seams is related with the height of seam and the length of the working face.The coal seam is thicker,with wider distance between the score of "the supporting pressure and the acting surface, while the concentration factor is smaller.The working face is longer,when the concentration factor of supporting pressure and the peak point’s distance before the acting surface is wider.These law conclusions offer some guideline for determination of support form for roadways and prevention of the dynamic disaster of the coals.更多还原