根据李家壕煤矿2-2中煤11208工作面切眼加强支护研究的需要,在工作面切眼布置位移观测点,对切眼顶板位移情况进行实时观测。根据各个测点位置顶板变化情况,分析了切眼顶板下沉位置及下沉量,准确把握顶板变化情况,从而制定适合11208工作面切眼顶板支护的具体方案,为本矿大断面顶板支护提供了实践经验。 According to the need of digging 11208 coal face in Lijiahao coal mine to reinforce the support, the dislocation observation point was placed on the face and the displacement of the roof was observed in real time. According to the change of roof location at each measuring point, the roof sinking position and sinking amount are analyzed, and the roof variation is accurately grasped so as to make a concrete plan suitable for roof cutting with 11208 face. Protection provides practical experience.