杨庄煤矿掘进过多条老巷技术探讨

杨庄煤矿九采材料存放巷道,巷道掘进期间将依次揭露多条老巷,其中9301北顺槽、9300南顺槽、9300改造南顺槽通往采空区,为避免采空区防灭火安全,打设2道密闭。两密闭间隔空间内间隔的空间充填LFM防灭火材料。只揭露老巷顶部一部分,不便于人员进入施工密闭墙老巷,喷浆后注水泥浆。

Discussion on the technology of driving multiple old roadways in Yangzhuang Coal Mine

Yangzhuang Coal Mine’s nine mining materials are stored in the roadway.During the roadway excavation,many old roadways will be revealed in sequence.Among them,9301 Beishun channel,9300 Nanshun channel,and 9300 renovated Nanshun channel lead to the goaf.In order to avoid goaf prevention For fire extinguishing safety,set up 2 airtight channels.The space between the two enclosed spaces is filled with LFM fire-fighting materials.Only the top part of the old alley is exposed,and it is not convenient for people to enter the old alley with the closed wall for construction.After spraying,the cement slurry is injected.