液压支架炮采工作面矿压显现规律研究

Study on Strata Behavior of Blasting Mining Face with Hydraulic Support

炮采工作面采用液压支架支护的开采方法应用较少,为评价并改善该技术的应用效果,在田庄煤矿3601工作面进行了液压支架炮采工作面矿压显现规律的研究,分析了工作面顶板运动规律,在工作面和两巷布置测站,监测了工作面支架工作阻力和两巷超前支承压力变化情况,并对监测数据进行了处理分析。结果表明:3601工作面老顶周期来压时支架平均动载系数为1.64,属于周期来压较明显的炮采工作面,且存在分段来压现象;工作面超前支承压力峰值在工作面前方8m左右,采动影响范围约在工作面前方0~20m。

Hydraulic support in blasting working face is used less.In order to evaluate and improve the application of the technology,the research on the strata behavior of the hydraulic support in the blasting working face was carried out in the No.3601 working face of Tianzhuang Coal Mine.The roof movement in the working face was studied.By setting the monitoring stations in the working surface and two roadways,we monitored the variation of the working resistance and the advance abutment pressure and then processed the data.The results show that,with 1.64 average dynamic load factor of the support in the periodic weighting,the No.3601 working face belongs to the blasting working surface with obvious periodic weighting and there exists segment weighting.The peak of the advance abutment pressure is about 8 meters in front of the working face,with the mining impact ranging from 0 to 20 meters.