摘要
柴里煤矿23下206综放工作面施工轨道巷时,受断层影响,顶板围岩较为破碎。巷道采用架棚支护,在施工50m时发生顶板冒落事故,迎头无法向前施工,在采用马丽散注浆技术进行超前加固后,巷道周边围岩的稳定性得到很大的提高,安全系数也相应增强,巷道掘进工作得以顺利进行。
in construction of the rail entry of 23 206 fully mechanized caving face, the influenced by the fault, the roof rock is broken, the erecting shed support was used, when driving 50 meters, occur roof fall accident, it is difficult to drive forward. After the Marithan grouting technology of advance reinforcement, the stability of tunnel surrounding rock are greatly improved, safety coefficient is increased, the tunneling work can be carried out smoothly.
出处
《山东煤炭科技》
2016年第9期35-36,共2页
Shandong Coal Science and Technology
关键词
掘进
破碎带
预注浆
tunneling surrounding rock fragmentation pre-grouting
