西曲矿大断面开切眼围岩控制技术研究

摘要

为解决西曲矿18502工作面大断面开切眼支护时遇到的难题,通过理论计算、工程类比并结合数值模拟的方法确定了扩帮前后相应的支护参数,有效地控制了18502切眼施工时的围岩变形,为安装液压支架并顺利实现工作面回采创造了有利条件,对类似地质条件开切眼能够提供指导.%To solve the problems involving large-section open-off cut support in No.18502 working face in Xiqu mine, the theoretical calculation, engineering analogy and numerical simulation method are introduced, the corresponding support parameters before and after the gateway expansion are determined, The deformation of the surrounding rock during the construction of the open-cut off are effectively managed.The practice creates favorable conditions for the installation of the hydraulic support and the follow up mining, and provide guidance for the similar cases.