综采工作面预掘回撤通道围岩支护技术研究

Surrounding Rock Support Technology of Pre-excavated Withdrawal Channel in Fully-mechanized Mining Face

为了实现凉水井煤矿431303综采工作面设备的安全快速回撤,对预掘回撤通道围岩稳定性进行分析。巷道围岩变形主要发生在贯通阶段,针对该阶段提出了锚索补强与木垛补强相结合的联合支护技术方案。该方案的实施,顺利实现了工作面与预掘巷道的贯通,保障了末采期间的回采安全,为该矿进一步的预掘回撤通道支护参数优化提供了借鉴。

In order to realize the safe and rapid withdrawal of equipment at 431303 fully-mechanized mining face in Liangshuijing Coal Mine,the stability of surrounding rock in the pre-excavated withdrawal channel was analyzed.The deformation of roadway surrounding rock mainly occurred in the holing through stage,for which the technical support scheme support combining anchor cable reinforcement and wood pile reinforcement was proposed.The implementation of the scheme successfully realized the holing through of the working face and the pre-excavated roadway,ensured the mining safety during the final mining period,and provided reference for the optimization of supporting parameters of the further pre-excavated withdrawal channel in this mine.