摘要
应用YSS型岩体声发射监测仪,根据岩音频度、大事件、岩音能率等参数,对符山铁矿无底柱分段崩落法采场地压、岩体稳定性的预测预报等进行研究表明:回采时,工作面后方及侧翼岩体均受到扰动而出现应力集中,应力升高区约距工作面15～25m;利用声发射监测来预测岩体稳定性、预报局部冒落是可行的、有效的。
Studies have been Carried out to predict ground movement and rock mass stahility at the sublevel caving stope in Fushan Iron Ore Mine hased upon AE parameters such as event counts rate, energy measurements, etc. using Model YSS Rock AE Monitor. The results of the studies show that rock mass at the rear and sides of the stope are disturbed during stoping. and stress concentration occurs. The stres-increase area is 15~25m away from the work face. It has prove feassible and effective to adopt AE technique to predict rock mass sta- bility and forecast local rock fall.
