| 渗流-应力耦合作用下深埋黏土岩隧道盾构施工特性及其动态行为研究 |
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| 引用本文： | 贾善坡,陈卫忠,于洪丹,李香玲.渗流-应力耦合作用下深埋黏土岩隧道盾构施工特性及其动态行为研究[J].岩石力学与工程学报,2012(Z1):2681-2691. |
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| 作者姓名： | 贾善坡 陈卫忠 于洪丹 李香玲 |
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| 作者单位： | 长江大学城市建设学院;山东大学岩土与结构工程研究中心;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;Euridice,SCK·CEN国家核能研究中心 |
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| 基金项目： | 国家自然科学基金资助项目(41102182);中国石油科技创新基金项目(2011D–5006–0603);湖北省自然科学基金资助项目(2011CDB008) |
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| 摘 要： | 基于连续介质大变形理论和损伤力学理论,将塑性损伤演化与渗流相互耦合的方法引入到Mohr-Coulomb准则,建立黏土岩弹塑性大变形渗流–应力耦合模型,以ABAQUS软件为平台对其进行二次开发。以比利时黏土岩核废料库工程为背景,在全面分析盾构施工影响围岩稳定性因素的基础上,建立反映施工质量的等代层模型,对不同施工质量时盾构掘进过程中围岩及开挖面的变形、孔隙压力及塑性区的演化规律进行数值模拟。计算结果表明,围岩变形在开挖面附近达到最大值,施工质量对围岩稳定性有明显的影响,施工质量越差,开挖扰动区的范围就越大,并且孔隙压力降低的幅度就越大。研究结果可为软岩隧道设计及施工提供参考。
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| 关 键 词： | 隧道工程 黏土岩 盾构隧道 渗流–应力耦合 施工特性 有限元法 |
STUDY OF CONSTRUCTION CHARACTERISTICS AND DYNAMIC BEHAVIOR OF DEEP CLAY STONE DURING SHIELD TUNNELING UNDER SEEPAGE-STRESS COUPLING EFFECT |
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| JIA Shanpo,CHEN Weizhong,YU Hongdan,LI Xiangling.STUDY OF CONSTRUCTION CHARACTERISTICS AND DYNAMIC BEHAVIOR OF DEEP CLAY STONE DURING SHIELD TUNNELING UNDER SEEPAGE-STRESS COUPLING EFFECT[J].Chinese Journal of Rock Mechanics and Engineering,2012(Z1):2681-2691. |
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| Authors: | JIA Shanpo CHEN Weizhong YU Hongdan LI Xiangling |
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| Affiliation: | 1.School of Urban Construction,Yangtze University,Jingzhou,Hubei 434023,China;2.Research Center of Geotechnical and Structural Engineering,Shandong University,Jinan,Shandong 250061,China;3.State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;4.Euridice,SCK CEN,Belgian Nuclear Research Centre,Mol 2400,Belgium) |
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| Abstract: | Based on the theory of large deformation and damage mechanics,an elastoplastic coupling analysis model considering effect of large deformation is set up by introducing damage evolution and seepage-stress coupling into the Mohr-Coulomb criterion.An equivalent layer model is adopted after comprehensive analysis of surrounding rocks associated with shield tunneling.Considering the actual case of construction of connecting gallery of a radioactive waste disposal in the deep Boom clay formation in Belgium,different tunnel construction qualities are calculated by small deformation,large deformation,respectively,by the secondary development of ABAQUS.The distributions of pore pressure,plastic strain and deformation around the tunnel associated with shield tunneling are analyzed in details.The results show that the deformation of surrounding rocks reaches the maximum in the vicinity of the excavation face and tunnel construction quality affects the stability of surrounding rocks significantly.This study is useful for shield tunnel construction and field measurement. |
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| Keywords: | tunneling engineering clay stone shield tunnel seepage-stress coupling construction characteristics finite element method |
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