摘要
针对马兰矿南五下组煤采区辅运巷作为采区准备巷道,巷道断面大且多巷并进导致支护难度大这一问题,对辅运巷进行了顶板围岩结构窥视,分析了巷道群开挖过程围岩应力分布特征以及煤柱支承压力形成机制,提出了采用预应力全长锚固锚杆锚索支护技术。实践证明,应用该技术后巷道支护效果良好,满足了巷道群支护要求,为巷道支护设计提供理论支撑。
Aiming at the problem that auxiliary roadway is used as preparation roadway of mining area in south wuxia coal mining area of Malan mine, the roof surrounding rock structure of auxiliary roadway is peeped, the stress distribution characteristics of surrounding rock and the formation mechanism of supporting pressure of coal pillar during excavation of roadway group are analyzed, and the technology of using prestressed full-length anchor anchor cable support is put forward. It is proved by practice that the roadway support effect is good after applying this technology, which meets the requirements of roadway group support and provides theoretical support for roadway support design.
作者
马东正
Ma Dongzheng(Gujiao Coking Mine Co.,Ltd.,Gujiao Shanxi 030200)
出处
《机械管理开发》
2020年第7期129-131,共3页
Mechanical Management and Development
关键词
采区巷道群
钻孔窥视
围岩应力
roadway group in mining area
borehole peep
stress of surrounding rock
