| 盾构掘进参数对地表沉降的影响分析 |
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| 引用本文： | 张恒,陈寿根,邓稀肥.盾构掘进参数对地表沉降的影响分析[J].现代隧道技术,2010,47(5). |
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| 作者姓名： | 张恒 陈寿根 邓稀肥 |
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| 作者单位： | 西南交通大学土木工程学院; |
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| 摘 要： | 盾构法作为地铁隧道施工的一种主要施工方法已在我国得到广泛的应用,由施工引起的地层移动和地表沉降是盾构隧道设计和施工中备受关注的问题.文章以深圳地铁5号线洪浪-兴东盾构区间下穿广深高速公路立交桥隧道施工为工程依托,通过数值模拟和现场监测,对影响地表沉降的掘进参数进行了模拟分析.计算结果表明,地表下沉与盾构掘进参数密切相关,适当加大注浆压力能有效控制地表沉降;同时,土舱压力与土体原始侧向压力接近时地表沉降量最少.实测地表沉降与掘进参数的关系表明,当注浆量一定时,地面沉降随土舱压力的增加而减小;地表沉降随着注浆量及注浆压力的增大而减小.
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| 关 键 词： | 盾构隧道 地表沉降 掘进参数 数值模拟 |
Analysis of the Influence of Shield Driving Parameters on Ground Settlements |
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| Zhang Heng,Chen Shougen,Deng Xifei.Analysis of the Influence of Shield Driving Parameters on Ground Settlements[J].Modern Tunnelling Technology,2010,47(5). |
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| Authors: | Zhang Heng Chen Shougen Deng Xifei |
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| Institution: | Zhang Heng Chen Shougen Deng Xifei(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031) |
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| Abstract: | hield tunneling has been widely adopted in China.Strata movement and ground settlements induced by construction are main issues to be addressed.Considering the shield tunnel under-passing Guangshen highway flyover of Shenzhen subway Line 5,numerical simulation and field monitoring were used to analyze the influence of parameters of shield driving on ground settlemens.Numerical modeling results showed that increasing grouting pressure can effectively reduce ground settlements and the minimum ground settlemen... |
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| Keywords: | Shield tunnel Ground settlement Parameters of shield driving Numerical simulation |
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