| 砂土中隧洞开挖引起的地面沉降试验研究 |
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| 引用本文： | 周小文,濮家骝.砂土中隧洞开挖引起的地面沉降试验研究[J].岩土力学,2002,23(5):559-563. |
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| 作者姓名： | 周小文 濮家骝 |
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| 作者单位： | 1. 长江科学院,土工研究所,湖北,武汉,430010
2. 清华大学,水利水电工程系,北京,100084 |
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| 摘 要： | 利用离心模型试验研究隧洞开挖中支护压力P与地层位移S的关系以及地面沉降槽的形态。得到归一化P－S曲线和沉降槽计算参数。还分析了土类、密度和含水量对地层位移的影响。
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| 关 键 词： | 砂土 隧洞开挖 地面沉降 离心模型试验 支护压力 地层位移 沉降槽 |
| 文章编号： | 1000-7598-(2002)05-0559-05 |
| 收稿时间： | 2001-09-17 |
| 修稿时间： | 2001年9月17日 |
Centrifuge model test on ground settlement induced by tunneling in sandy soil |
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| Zhou Xiao-wen,Pu Jia-liu.Centrifuge model test on ground settlement induced by tunneling in sandy soil[J].Rock and Soil Mechanics,2002,23(5):559-563. |
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| Authors: | Zhou Xiao-wen Pu Jia-liu |
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| Institution: | 1. Soil Engineering Department, Yangtze River Scientific Research Institute, Wuhan 430010, China ; 2. Department of Hydraulic Engineering, Tsinghua University, Beijin 100084，China |
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| Abstract: | The centrifuge model tests were performed to investigate the ground settlements during tunnel excavation in sandy soil ground. A columnar rubber membrane tube was used to represent a tunnel. Compressed air was supplied to it to create a uniform pressure to support the surrounding soil. During centrifuge running, air pressure was gradually decreased to simulate the initial stress release; i.e., to simulate the excavating process. Through different combinations of test conditions including soil type, density, water content and tunnel embedment depth; the ground failure patterns and settlements were examined; the normalized P-S relationship were obtained and discussed.. |
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| Keywords: | tunnel centrifuge model test settlement supporting pressure |
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