高瓦斯矿井采煤工作面开切眼掘进支护的优化与施工

Cut support optimization and construction in working face of high gas coal mine

用ZLJ1100钻机进行超前瓦斯探测并确定安全可施工后,采用分次截割、掘进支护。瓦斯监控系统的传感器紧跟掘进迎头,以便地面监控系统能够随时掌握瓦斯浓度,确保安全。掘进过程中如顶板破碎、岩层薄、易离层垮落时,掘进机每刀进尺350mm,掘进一个锚杆排距立即锚网索支护巷。道分两次掘进完成,首先掘进远离工作面的一半断面,将开切眼半边巷道掘进至设计位置后,掘进机退回来,再将剩余的巷道进行掘进刷帮处理。

With the ZLJ1100 rig advanced gas detection and to determine the safety construction, used at the time of cutting, excavation and supporting. Sensor of gas monitoring system to follow a head-on, to the ground monitoring system can grasp the gas concentration, to ensure the safety of. The process of excavation, such as broken roof rock thin, easy separation caving, boring machine each knife 350 mm tunneling footage, a bolt row distance immediately bolt mesh cable support roadway. Road two times advancing completion, first heading away from the working face of the half section, will cut half of the roadway excavation to the design position, heading machine back, then the rest of the roadway tunneling brushing treatment.