五阳煤矿深部大巷工程岩体级别分析与支护方案设计  

Rock mass grade analysis and supporting scheme design for deep tunnel engineering of Wuyang Coal Mine

作　　者：张宇[1] ZHANG Yu(CCTEG Beijing Huayu Engineering Co.,Ltd.,Beijing 100120,China)

机构地区：[1]中煤科工集团北京华宇工程有限公司,北京100120

出　　处：《煤炭工程》2023年第8期12-16,共5页Coal Engineering

摘　　要：针对五阳煤矿750 m采深开拓大巷施工过程中出现的严重变形现象,为了增强巷道整体稳定性,提高井下深部大巷施工质量,保证矿井安全生产,通过对矿井深部地应力和地下工程岩体分级分析,参照类似条件矿井支护,确定井下大巷的初始支护设计,考虑到受高地应力及利用钻孔治理瓦斯影响,结合支护效果,利用紧固关键承载圈的理论,提出采用锚网索喷和注浆锚索联合支护的优化设计。结果表明:地下工程岩体分级指数,可作为井下工程选择适合层位的重要参考;依靠深部岩体自稳能力和采用注浆锚索支护巷道关键承载圈作为塑性支撑,能够保证巷道支护要求,取得良好的支护效果。Under the influence of crustal stress at the mining depth of 750 m in Wuyang Coal Mine,serious deformation occurred during the construction of the main roadway.In order to enhance the overall stability of the roadway,improve the construction quality of the underground deep main roadway,and ensure the safe production of the mine,through the classification analysis of the deep crustal stress and underground engineering rock mass,the initial support design of the underground main roadway was proposed.Combining with the support effect,the theory of fastening key bearing rings was used,an optimized design was put forward using the combined supporting scheme of bolt-mesh-cable-shotcreting and grouting anchor cable.The results proved that,the rock mass classification index for underground engineering can be applied as an important reference for selecting suitable layers in underground engineering;relying on the self stability of deep rock mass and using grouting anchor cables to support the key bearing ring of the tunnel as plastic support,can satisfy the requirements of tunnel support and achieve good support effects.

关 键 词：潞安矿区 工程岩体 地应力 支护参数 地下工程 

分 类 号：TD263[矿业工程—矿井建设]