| 隧道施工中环境土层工程性质研究 |
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| 引用本文： | 段光杰,梁池生,李兆平.隧道施工中环境土层工程性质研究[J].力学学报,2002,10(2):141-145. |
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| 作者姓名： | 段光杰 梁池生 李兆平 |
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| 作者单位： | 1. 中国地质大学水资源与环境工程系,北京100083;
2. 广东省地质矿产局水文工程地质一大队,湛江524033;
3. 北方交通大学土建学院,北京100083 |
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| 摘 要： | 利用非饱和土的三轴仪 ,测定不同吸力状态下的土的强度特性 ,并确立了两者之间的定量关系 ,同时进行了含水量对非饱和土的强度影响试验 ,研究了北京地区的非饱和土的强度特性。试验结果表明 :不同的吸力状态下 ,土的强度明显提高 ;含水量的改变对内聚力有明显影响 ,而对内摩擦角无明显影响 ,并测定本土样对强度改变的含水量拐点值.
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| 关 键 词： | 非饱和土 基质吸力 含水量 三轴试验 |
| 收稿时间： | 2001-10-20 |
| 修稿时间： | 2002-01-15 |
RESEARCH ON ENGINEERING PROPERTIES OF SOIL LAYER IN TUNNEL CONSTRUCTION |
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| DUAN Guangjie,LIANG Chisheng,LI Zhaoping.RESEARCH ON ENGINEERING PROPERTIES OF SOIL LAYER IN TUNNEL CONSTRUCTION[J].chinese journal of theoretical and applied mechanics,2002,10(2):141-145. |
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| Authors: | DUAN Guangjie LIANG Chisheng LI Zhaoping |
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| Institution: | 1. Department of Water Resources and Environmental Engineering, China University of Geosciences, Beijing 100083;
2. Hydrogeological and Engineering Geology Team No.1,Guangdong Geological and Mineral Resources Bureau,Zhanjiang 524033;
3. Institute of Civil Engineering,The Northern Jiaotong University,Beijing 100044 |
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| Abstract: | The strength characteristics of the unsaturated soil in Beijing area were determined by using unsaturated triaxial apparatus at different matric suctions and a quantitatire relation between strength and matric suction was established. At the same time, we carried out a test of influence water content on the strength of the unsaturated soil. The result shows that the strength is raised at the different matric suctions and the change of water content obviously influences the cohesive force, but not remarkably influences the internal friction angle. We measured the turning point of water content to the strength changes of these specimens too. |
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| Keywords: | Unsaturated soil Matric suction Water content Triaxial test |
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