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首页> 外文会议>International Conference on Geological Engineering >Numerical Simulation Study on Wall-rock Deformation Mechanism in Non-Pillar Sublevel Caving Mining Tunnel
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Numerical Simulation Study on Wall-rock Deformation Mechanism in Non-Pillar Sublevel Caving Mining Tunnel

机译：非柱子浮雕煤矿隧道中壁岩变形机理的数值模拟研究

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摘要

The secondary stress distribution and deformation mechanism of excavated mining tunnel of -62m and -74m in Daye mine was studied in the paper. Firstly, the wall-rock was compartmentalized to different engineering geology group and mechanical parameters of wall-rock were determined based on engineering geological exploration and rock mechanics test. Then the state of stress and strain of excavated tunnel was simulated by FLAC3D software, the wall-rock deformation mechanism was analyzed too. The numerical simulation results were validated by convergence monitoring data that obtained in -74m mining tunnel. Studied results show that the range of secondary stress distribution exist differences corresponding to different mining tunnel wall-rock condition, but the characteristic of principal stress distribution is similar that compress stress centralized in sidewall and tensile stress centralized in vault and floor of the mining tunnel.
机译：本文研究了挖掘机-62M和-74M挖掘机隧道的二级应力分布和变形机制。首先，基于工程地质勘探和岩石力学试验确定了壁岩针对不同的工程地质群和壁岩的机械参数进行了划分的。然后通过FLAC3D软件模拟挖掘隧道的应力和应变状态，壁岩变形机制也被分析。通过在-74M挖掘隧道中获得的收敛监测数据验证了数值模拟结果。研究结果表明，与不同采矿隧道壁岩状况相对应的次级应力分布的范围，但主应力分布的特点是相似的，压缩应力集中在侧壁中集中的压力和集中在采矿隧道的拱顶和地板中。

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