露天爆破对井工巷道围岩稳定性影响研究  

Study on impact of surface blasting on stability of roadway surrounding rock

作　　者：安泰龙 李俊孟 齐文跃[2,3] 郝德永[2,3] 邰阳[2,3] 

机构地区：[1]内蒙古自治区煤炭工业专业技术服务中心,内蒙古呼和浩特010020 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]中国矿业大学深部煤炭资源开采教育部重点实验室,江苏徐州221116

出　　处：《煤炭工程》2016年第1期74-76,80,共4页Coal Engineering

摘　　要：针对露井联合开采中,露天爆破对井工巷道围岩稳定性造成影响的问题,采用爆破微型测试系统对离爆源最近的井工大巷进行实时监测,并对监测的爆破振动数据进行多元非线性回归分析,得出萨道夫斯基公式中参数K、α,确定了试验矿井露天爆破单响炸药量,以及露天爆源与井工大巷的安全距离,井工巷道锚杆应力实测结果表明,露天矿爆破参数与安全距离的选取可保证井工巷道的安全使用。Aiming at the impact of surface blasting on stability of underground roadway surrounding rock in open- underground mining, blasting micro test system was applied in real-time monitoring of the roadways nearest to blasting, and the monitoring data was analyzed with multivariate nonlinear regression, the parameter K and a in Saudorsky formula were obtained, the amount of open-pit blasting single response explosive and the safety distance between roadway and explosion source were determined. The test of roadway bolt stress showed that, the reasonable selection of open- pit blasting parameters and safety distance ensured the security of underground roadway.

关 键 词：露井联采 露天爆破 单响炸药量 巷道围岩稳定性 锚杆应力 

分 类 号：TD824[矿业工程—煤矿开采]