摘要
三交河矿回撤通道在采动的影响下,围岩变形速率过大,顶板局部出现冒顶、锚杆锚索失效等问题,通过现场围岩变形情况监测,研究回撤通道围岩的变形规律,通过理论分析和数值计算确定合理的停采让压位置,并且优化回撤通道围岩的控制措施,最终有效的控制了回撤通道的变形,为实现工作面安全高效的回撤提供有力保障。
Under the influence of mining, the roof deformation rate was too large, and the top roof and anchor bolt cable failure happened locally. Through the monitoring of surrounding rock deformation, the surrounding rock deformation law was studied. Through the theoretical analysis and numerical calculation to determine the reasonable pressure position, and optimize the control measures of the surrounding rock of the retracement roadway, the deformation of the surrounding rock was finally effectively controlled, which provided safe and efficient retracement of the working face.
作者
李洪雷
Li Honglei(Shanxi Fenhe Coking Coal Corporation Ltd., Huozhou Coal and Electricity Group, Hongtong 031400, China)
出处
《煤炭与化工》
CAS
2019年第6期27-30,共4页
Coal and Chemical Industry
关键词
回撤通道
停采让压
现场观测
retracement roadway
stopping mining pressure
field observation
