| 不同地层条件盾构始发对地表沉降影响规律研究 |
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| 引用本文： | 赵耀强,李元海,朱世友,林志斌.不同地层条件盾构始发对地表沉降影响规律研究[J].隧道建设,2011,31(4):463-469. |
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| 作者姓名： | 赵耀强 李元海 朱世友 林志斌 |
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| 作者单位： | 1. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州,221008
2. 中铁隧道勘测设计院有限公司,天津,300133 |
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| 摘 要： | 针对盾构始发施工造成地表沉降过大、导致工程事故时有发生的问题,采用岩土通用软件FLAC3D建立盾构始发三维模型,对北京、杭州、南京和上海4个典型地区代表土层盾构始发施工的全过程进行模拟计算,总结出各典型地区盾构始发施工对地表变形的影响规律,并提出相应的施工建议。研究结果表明,相同施工条件下：1）不同地层盾构始发地表沉降差别较大,黏性土较砂性土沉降槽影响范围相对较大,中心点沉降量相对较小;2）典型地区均为黏性土条件下地表沉降较小,非黏性土地层条件下地表沉降较大且在横向基坑边界处地表差异沉降较大;3）典型地区从地表沉降控制效果由好到差排序为北京〉南京〉杭州〉上海。
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| 关 键 词： | 盾构始发 地层参数 地表沉降 数值模拟 |
Study on Rules of Influence of Shield Launching in Different Strata on Ground Surface Settlement |
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| ZHAO Yaoqiang,LI Yuanhai,ZHU Shiyou,LIN Zhibin.Study on Rules of Influence of Shield Launching in Different Strata on Ground Surface Settlement[J].Tunnel Construction,2011,31(4):463-469. |
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| Authors: | ZHAO Yaoqiang LI Yuanhai ZHU Shiyou LIN Zhibin |
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| Institution: | 1(1.State Key Laboratory for GeoMechanics & Deep Underground Engineering, China University of Mining & Technology,Xuzhou 221008,Jiangsu,China; 2.China Railway Tunnel Survey & Design Institute Co.,Ltd.,Tianjin 300133,China) |
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| Abstract: | Accident often happens due to the serious ground surface settlement caused by shield launching.3D shield-launching model is established by means of FLAC3D program.The full course of shield launching in typical strata in Beijing,Hangzhou,Nanjing and Shangh |
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| Keywords: | shield launching strata parameter ground surface settlement numerical simulation |
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