采场前方支承压力分布规律数值模拟研究

摘要

Abutment pressure plays a leading role in mine strata behaviors ,which is often the power source of complicated mine dynamic phenomenon .In this paper ,the methods of FLAC numerical simulation are applied to study the influences of coal seam thickness ,mining depth ,coal mass strength on the distribution characteristics of abutment pressure ,finding out the basic distribution law of the abutment pressure under the certain geological and producing technique conditions ,which provides a basis for the determination of the influence scope of abutment pressure ,the advance support scope of roadway and the optimization of support plan .%采煤工作面前方移动支承压力在矿压显现中起主导作用，往往是矿井复杂动力现象的力源。结合矿井具体地质条件，采用FLAC数值模拟研究煤层厚度、开采深度、煤体强度对支承压力分布特征的影响，得出在其它地质和生产技术条件一定的情况下，采场前方支承压力分布的基本规律，为确定采面前方支承压力影响区范围、回采巷道超前支护范围以及优化支护方案提供了参考。