煤层赋存状态对同采工作面错距的影响研究

Study on the Influence of the Occurrence State of Coal Seam on the Dislocation Distance of the Simultaneous Mining Working Face

根据赵庄煤矿二采区2301、2401工作面煤层赋存状态实际情况,采用理论计算、数值模拟及正交试验分析了工作面同采过程中垂直应力变化规律。结果表明:最大支承压力值随着层间岩层厚度及4煤层厚度的增大而增大,随着与3煤层厚度的增大而减小,其影响因素排序为:3煤层厚度>层间岩层厚度>4煤层厚度。

According to the actual situation of coal seam occurrence state of the 2301 and 2401 working face in the second mining area of Zhaozhuang Coal Mine,the variation law of vertical stress in the process of simultaneous mining in working face is analyzed by means of theoretical calculation,numerical simulation and orthogonal experiment.The results show that the maximum abutment pressure increases with the increase of interlayer rock layer thickness and the 4 coal seam thickness,decreases with the increase of the 3 coal seam thickness,and the influencing factors are as follows:the 3 coal seam thickness>interlayer rock layer thickness>the 4 coal seam thickness.