基于连续-离散耦合数值分析的盾构隧道地层扰动区域分布特征研究  

Study on Regional Distribution Characteristics of Stratum Disturbance in Shield Tunnel Based on Continuous-discrete Coupling Numerical Analysis

作　　者：焦安亮 贺可强[2] VICTOR Kuzin 黄延铮 王慧康 郑元勋[4] 张鹏 JIAO Anliang;HE Keqiang;VICTOR Kuzin;HUANG Yanzheng;WANG Huikang;ZHENG Yuanxun;ZHANG Peng(China Construction Seventh Engineering Division Co.,Ltd.,Zhengzhou,Henan 450004,China;School of Civil Engineering,Qingdao University of Technology,Qingdao,Shandong 266555,China;Russian Academy of Engineering,Moscow 125009,Russia;School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou,Henan 450001,China)

机构地区：[1]中国建筑第七工程局有限公司,河南郑州450004 [2]青岛理工大学土木工程学院,山东青岛266555 [3]俄罗斯工程院地矿学部,俄罗斯莫斯科125009 [4]郑州大学水利与土木工程学院,河南郑州450001

出　　处：《施工技术（中英文）》2022年第22期132-135,145,共5页Construction Technology

基　　金：国家自然科学基金面上项目(51878623,52279144);中建七局科技研发课题(CSCEC7b-2019-Z-6)。

摘　　要：采用连续-离散耦合数值分析方法对超推进、欠推进及土量平衡掘进状态下盾构前方地层扰动特征进行研究。研究结果表明,超推进状态下盾构前方地层受到挤压破坏,掘进面出现被动失稳破坏;欠推进状态下前方地层出现大位移沉降,发生主动失稳破坏;土量平衡状态下盾构造成的地层扰动均控制在盾构开挖面周围一定范围内,在较远的区域影响较小。3种掘进状态下形成的破坏区域分布规律均符合掘进面失稳破坏理论,验证了采用连续-离散数值耦合方法模拟盾构掘进中地层扰动特性的适用性。The continuous-discrete coupling numerical method was used to study the stratum formation disturbance characteristics in front of the shield under the conditions of super-propulsion, under-propulsive and equilibrium tunneling. The results show that when the tunneling is in the super-propulsion state, the stratum in front of the shield is crushed and passive instability occurs on the tunneling surface. In the under-propulsive state, the large displacement settlement occurs in front of the stratum and active instability failure occurs. When the soil volume is in equilibrium state, the disturbance caused by the shield structure is controlled within a certain range around the excavation face of the shield, and the influence is small in the distant area. The distribution of failure areas under the three tunneling conditions all accord with the theory of instability failure of tunneling face, which verifies the applicability of the continuous-discrete coupling numerical method to simulate the formation disturbance characteristics in shield tunneling.

关 键 词：隧道工程 连续-离散耦合 数值模拟 掘进 地层扰动 

分 类 号：U455[建筑科学—桥梁与隧道工程]