摘要
为了解决山东李楼煤业有限公司井下采用大直径钻孔卸压所存在的卸压强度低、滞后性差等不足,提出了一种新的煤矿井下防冲击地压技术,对巷道围岩承压区域进行爆破,在巷道围岩区域处形成一个卸压保护区,从而实现削弱地压冲击的目的。根据实际应用表明,该方案能够将井下高应力区域面积降低71.4%以上,冲击能量降低到10^(4)以下。
In order to solve the problems of low pressure relief strength and poor hysteresis of large diameter borehole pressure relief in the underground of Shandong Lilou Coal Industry Co.,Ltd.,a new underground anti-impact ground pressure technology for coal mines is proposed,which is used to blast the pressure-bearing area of the roadway surrounding rock and form a pressure relief protection zone at the roadway surrounding rock area,so as to achieve the purpose of weakening the impact of the ground pressure.According to the practical application,this scheme can reduce the square measure of high stress area underground by more than 71.4%and the impact energy to less than 10^(4).
作者
朱国强
曲荣超
王璐
Zhu Guoqiang;Qu Rongchao;Wang Lu(Shandong Lilou Coal Industry Co.,Ltd.,Shandong Heze 274700)
出处
《山东煤炭科技》
2023年第3期183-185,191,共4页
Shandong Coal Science and Technology
关键词
大直径钻孔
冲击地压
围岩爆破
卸压保护
large diameter drilling
rock burst
surrounding rock blasting
pressure relief protection
