| 引水隧洞膨胀性围岩的稳定性分析 |
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| 引用本文： | 刘豆豆,陈卫忠,伍国军,谭贤君.引水隧洞膨胀性围岩的稳定性分析[J].岩土力学,2006,27(Z1):412-415. |
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| 作者姓名： | 刘豆豆 陈卫忠 伍国军 谭贤君 |
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| 作者单位： | 1. 山东大学 岩土与结构工程研究中心，济南 250061；2. 山东财政学院 工商管理学院，济南 250014；3. 中国科学院武汉岩土力学研究所，武汉 430071 |
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| 基金项目： | 国家自然科学基金项目（No. 50379052）和国家重点基础研究发展计划（2002CB412704）项目资助 |
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| 摘 要： | 膨胀岩在实际工程中通常表现为围岩随时间的推移大量向洞室内塑性挤出或底板大量隆起，最终导致洞室支护和围岩产生裂损或破坏。山西万家寨引黄入晋工程南干线7号隧洞地层特点除砂岩与泥岩互层外，膨胀岩共有3～4层，且斜穿隧道。通过对隧洞开挖及支护过程应用考虑膨胀岩影响的粘弹塑性有限元进行分析，得出膨胀围岩对隧洞及支护结构的受力及稳定性的影响。建议在通水运行过程中密切监测其变形、应力应变、渗透压及外水压力的变化规律，以确保工程的安全运行。
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| 关 键 词： | 膨胀岩 流变 粘弹塑性 稳定性 |
| 收稿时间： | 2006-06-18 |
Research on stability of surrounding rock mass
for intake tunnel due to swelling rock |
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| LIU Dou-dou,CHEN Wei-zhong,WU Guo-jun,TAN Xian-jun.Research on stability of surrounding rock mass
for intake tunnel due to swelling rock[J].Rock and Soil Mechanics,2006,27(Z1):412-415. |
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| Authors: | LIU Dou-dou CHEN Wei-zhong WU Guo-jun TAN Xian-jun |
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| Institution: | 1. Geotechnical and Structural Engineering Research Center，Shandong University，Jinan 250061, China； 2. Business Administration Institute， Shandong Institute of Finance，Jinan 250014, China； 3. Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan 430071, China |
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| Abstract: | The swelling rock usually induces surrounding rock mass be extruded largely or floor lift by time even the support and surrounding rock mass be damaged or destroyed in practice. The geologic characteristic of the tunnel No.7 for Shanxi Wanjiazhai Yellow River Diversion Project is sandstone and mudstone distributing interactively and has 3-4 layers swelling rock through the tunnel. Numerical analysis with viscoelasto-plastic model has been done to analyze the process of excavation and support procedures. The numerical results show that swelling deformation has high effect on stability and mechanical behavior of support structure. Therefore, the displacement, stress and strain, seepage pressure and water pressure should be measured during the tunnel operating. |
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| Keywords: | swelling rock rheology viscoelasto-plastic stability |
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