岩体应力条件对煤矿回采巷道支护变形和荷载的影响

The Influence of Stress Conditions on Supporting Deformation and Load of Coal Mining Roadway

矿山巷道附近岩体的应力—应变状态与巷道的受力和变形相关。针对山西某煤矿的一个长壁开采区,通过CCBO探头和CCBM探头连续监测长壁前岩体的应力—应变状态,同时采用水力测功器和应变锚杆确定支护载荷及回采巷道变形。最后确定应力—应变岩体状态与被测巷道变形和荷载之间的潜在关系。

The stress-strain state of rock mass near mine roadway is related to the force and deformation of roadway.This paper continuously monitors the stress-strain state of rock mass in front of long wall by CCBO probe and CCBM probe,and uses hydraulic dynamometer and strain bolt to determine the support load and roadway deformation.Finally,the potential relationship between stress-strain rock mass state and roadway deformation and load is determined.