2025年8月11日 星期一
岩石力学与工程学报  2024, Vol. 43 Issue (S1): 3195-3203    DOI: 10.13722/j.cnki.jrme.2022.0766
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基于蝶形理论的常规锚杆索支护围岩控制效用研究
李  臣1,2,马念杰2,辛德林1,张文龙2,3
(1. 中煤科工集团武汉设计研究院有限公司,湖北 武汉  430064;2. 中国矿业大学(北京) 能源与矿业学院,北京  100083;
3. 青岛黄海学院 建筑工程学院,山东 青岛  266427)
Study on the control effect of conventional bolt cable supporting surrounding rock based on butterfly plastic zone theory
LI Chen1,2,MA Nianjie2,XIN Delin1,ZHANG Wenlong2,3
(1. CCTEG Wuhan Engineering Company,Wuhan,Hubei 430064,China;2. School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;3. School of Civil Engineering and Architecture,Qingdao Huanghai University,Qingdao,Shandong 266427,China)
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摘要 针对采动巷道大变形常规锚杆索支护效果有限的情况,采用理论分析、数值模拟、工程案例分析的研究常规锚杆索支护对采动巷道围岩区域应力场分布、围岩塑性区尺寸及围岩变形破坏控制作用效果。研究表明:(1) 采动巷道围岩所处双向非均匀应力环境具有促进巷道塑性区由圆形,向椭圆形甚至蝶形发育的趋势,该趋势受围岩强度影响显著;(2) 常规锚杆索支护无法显著改善采动巷道区域应力场,加强支护对巷道围岩连续性变形的控制率基础应力有关;(3) 采动巷道的围岩稳定性控制应以应力调控为主、常规支护为辅,大变形巷道柔性支护配合注浆改性和敏感区重点补强是关键。研究成果有助于进一步认识常规锚杆索支护对采动巷道的作用效果,为巷道围岩控制提供参考。
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李 臣1
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关键词 采矿工程采动巷道常规支护塑性区区域应力场变形破坏    
Abstract:The effectiveness of conventional anchor-cable support is limited for the large deformation of mining-induced roadway. The paper uses theoretical analysis,numerical simulation,and engineering case analysis to investigate the stress distribution of the surrounding rock,the size of the plastic zone,and the effect of deformation and failure control caused by conventional anchor-cable support in mining roadway. The results show that:(1) Bidirectional non-isobaric stress environment around the mining roadway promotes the development of the plastic zone from circular to elliptical or even butterfly-shaped,which is significantly affected by the strength of the surrounding rock. (2) Conventional anchor-cable support cannot significantly improve the stress field around the mining roadway. The control rate of continuous deformation of the surrounding rock in the roadway by strengthening support is related to the basic stress. (3) The stability control of the surrounding rock in the mining roadway should mainly rely on stress regulation,supplemented by conventional support. Flexible support combined with grouting modification and reinforcement of sensitive areas is the key. The research results can help to further understand the effect of conventional anchor-cable support on mining roadway and provide reference for surrounding rock control.
Key wordsmining engineering;mining roadway;conventional support;plastic zone    regional stress field;deformation failure of roadway
    
引用本文:   
李 臣1,2,马念杰2,辛德林1,张文龙2,3. 基于蝶形理论的常规锚杆索支护围岩控制效用研究[J]. 岩石力学与工程学报, 2024, 43(S1): 3195-3203.
LI Chen1,2,MA Nianjie2,XIN Delin1,ZHANG Wenlong2,3 . Study on the control effect of conventional bolt cable supporting surrounding rock based on butterfly plastic zone theory. , 2024, 43(S1): 3195-3203.
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