摘要
利用声波圈测试仪,对某矿岩巷掘进头附近围岩松动圈进行了量测,得出巷道掘进爆破动载作用下围岩松动圈范围的变化规律,为软岩巷道掘进合理爆破参数的选取提供了理论依据。
The change law of the distance of loose circle under dynamic loading of tunnel blasting through measuring the distance of loose circle around the ahead of tunneling in coal mining by using sonic circle tester is obtained, which provides theory base for the choosing of blasting parameter in soft rock driving.
出处
《煤矿爆破》
2009年第3期11-13,共3页
Coal Mine Blasting
关键词
岩巷掘进
爆破震动
松动圈
声波法
rock driving
vibration of blasting
loose circle
sonic method
