MEASUREMENT AND ANALYSIS OF INFLUENTIAL FACTORS OF BROKEN ZONE OF DEEP ROADWAYS AND STUDY ON ITS CONTROL TECHNIQUE
深井巷道围岩松动圈影响因素实测分析及控制技术研究

The change in the thickness of broken zone in surrounding rock of roadways with mining depth, surrounding rock strength and extraction is discussed on the basis of observation data for deep roadways located at different levels and in different rocks. Finally, the control technique of surrounding rocks is discussed and the satisfying results are acquired in an industrial trial.