| 软弱夹层对深部地下洞室围岩损伤模式的影响 |
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| 引用本文： | 李连崇,唐春安,梁正召,李根.软弱夹层对深部地下洞室围岩损伤模式的影响[J].地下空间与工程学报,2009,5(5). |
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| 作者姓名： | 李连崇 唐春安 梁正召 李根 |
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| 作者单位： | 大连理工大学土木水利学院,大连,116024 |
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| 基金项目： | 国家自然科学基金资助项目，973资助项目 |
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| 摘 要： | 软弱夹层等不良结构面对深部地下洞室的围岩稳定有着重要影响,应用有限元数值分析系统RFPA对软弱夹层影响下的深部地下洞室围岩损伤演化过程进行了模拟分析,重点研究了软弱夹层的展布位置、地应力大小对洞室围岩损伤区模式的影响.分析表明,有软弱夹层时,地下洞室开挖后围岩应力分布恶化,围岩应力扰动范围增大、相应的损伤区范围增大;地应力越大时,侧压系数的大小更多地主导着洞室围岩的损伤模式.研究成果可望对深部地下洞室选址及施工设计有借鉴意义.
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| 关 键 词： | 软弱夹层 地下洞室 损伤 数值模拟 |
Influence of Weak Interlayer on the Damage Mode of Rock Mass Surrounding Deep Underground Opening |
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| LI Lian-chong,TANG Chun-an,LIANG Zheng-zhao,LI Gen.Influence of Weak Interlayer on the Damage Mode of Rock Mass Surrounding Deep Underground Opening[J].Chinese Journal of Underground Space and Engineering,2009,5(5). |
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| Authors: | LI Lian-chong TANG Chun-an LIANG Zheng-zhao LI Gen |
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| Affiliation: | LI Lian-chong,TANG Chun-an,LIANG Zheng-zhao,LI Gen(School of Civil , Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The unfavorable structural planes,such as weak interlayers,play an important role in the stability of rock mass surrounding deep underground openings.A series of tests on the stability of the circular opening surrounded by rock mass containing weak interlayers have been conducted by using RFPA system.The influence of configuration of weak interlayer and the magnitude of maximum principal stress on the stability of surrounding rock mass of deep underground opening are numerically investigated.It is shown tha... |
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| Keywords: | weak interlayer underground opening damage numerical simulation |
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