关键词: 露天联采, 露天爆破, 单响炸药量, 巷道围岩稳定性, 锚杆应力

Abstract: For the problem of surface blasting will effect the stability of roadway surrounding rock in open-pit and underground mining, here using blasting micro test system to real-time monitoring the nearest roadways from explosion source, and by means of multivariate nonlinear regression analysis of the monitoring data, obtaining the parameter K and α in Saudorsky formula, determining the open-pit blasting single response explosive amount and the safety distance between roadway and explosion source of the mine test. The roadway bolt stress measured results shows that the selection of open-pit blasting parameters and safety distance can ensure the safe use of roadway.