特厚煤层综采强矿压防治技术的实践

Practice of Strong Ground Pressure Prevention and Control Technology in Fully Mechanized Mining of Extra Thick Coal Seams

随着矿井开拓延伸,受开采深度、煤岩物理力学性质、顶板岩层结构、构造应力、区段煤柱、巷道留设底煤、工作面见方、开切眼外错布置等因素的影响,回采工作面强矿压显现逐步凸显,工作面风巷顶板下沉、底板鼓起和两帮收敛变形严重。以关岭山煤业13204工作面为例,对强矿压产生的原因进行分析,通过数值模拟等手段制定了强矿压治理措施,应用效果理想。

With the development and extension of the mine,under the influence of mining depth,physical and mechanical properties of coal and rock,roof strata structure,tectonic stress,section coal pillar,reserved bottom coal in roadway,square of the working face,staggered arrangement of open cut holes,the strong ground pressure of mining face is gradually highlighted,and the roof subsidence,floor bulging and two side convergence deformation of air roadway in the working face are serious.Taking 13204 working face of Guanlingshan Coal Industry Co.,Ltd.as an example,this paper analyzed the causes of strong ground pressure,formulated strong ground pressure control measures by means of numerical simulation,and the application effect was ideal.