围岩变形对深部巷道锚杆支护的影响分析  

Analysis of the Influence of Surrounding Rock Deformation on Bolt Support in Deep Roadway

作　　者：宋伟 SONG Wei(Liyuanhe Mine of Jinneng Holding Group Xuangang Coal Electricity Co.,Ltd.,Xinzhou 034114,Shanxi,China)

机构地区：[1]晋能控股集团轩岗煤电有限责任公司梨园河矿,山西忻州034114

出　　处：《凿岩机械气动工具》2025年第4期108-110,共3页Rock Drilling Machinery & Pneumatic Tools

摘　　要：文章结合实际工程,研究深部巷道的围岩变形规律及特征,得出巷道地应力场主要是重力自应力;同时建立深部巷道计算模型,通过计算5种支护方案的直接顶弯曲下沉量,发现深度越大,位移量越小并逐步趋于稳定,注浆加固位移最小值为10 mm。通过采用弹性和弹性塑性变形能量差来描述围岩消耗情况,得出锚杆支护结构能吸收一部分耗散能,从而调控围岩变形,对优化改良深部巷道锚杆支护方案有现实意义。Based on the actual engineering,this paper studies the deformation law and characteristics of surrounding rock in deep roadway,and concludes that the in-situ stress field of roadway is mainly self-weight stress;at the same time,the calculation model of deep roadway is built,and by calculating the immediate roof deflection subsidence of five support schemes,it is found that the deeper the depth is,the smaller the displacement is and gradually tends to be stable,and the minimum displacement value of grouting reinforcement is 10 mm.By using the energy difference between elastic and elastic-plastic deformation to describe the consumption of surrounding rock,it is concluded that the bolt support structure can absorb part of the dissipated energy,so as to regulate the surrounding rock deformation,which has practical significance for optimizing and improving the bolt support scheme for deep roadway.

关 键 词：深部巷道 围岩变形 耗散能 锚杆支护 

分 类 号：TD353[矿业工程—矿井建设]