| 深部砂土三轴高压卸载结构变化的CT研究 |
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| 引用本文： | 李文平,张志勇,蒲毅彬,王维理,孙如华.深部砂土三轴高压卸载结构变化的CT研究[J].力学学报,2003,11(3):302-306. |
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| 作者姓名： | 李文平 张志勇 蒲毅彬 王维理 孙如华 |
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| 作者单位： | 1. 中国矿业大学,徐州221008;
2. 中国科学院兰州分院冻土工程国家重点实验室,兰州730000 |
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| 基金项目： | 国家自然科学基金资助项目(批准号:40272114,49702039) |
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| 摘 要： | 用取自山东巨野矿区埋深近 6 0 0m的深部砂土样,在三轴试验机上进行围压为 12MPa的三轴卸载试验,同时用CT装置探测试样在试验全过程中内部结构变化,并对纪录的CT图片进行了计算机图像分析处理,分析了深部砂土在高压卸载条件下变形和破坏结构性变化本质特点。
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| 关 键 词： | 深部砂土 高压 三轴卸载试验 土结构 CT技术 |
| 收稿时间： | 2003-02-10 |
| 修稿时间： | 2003-04-30 |
A STUDY ON THE STRUCTURAL CHANGE OF A DEEPLY-BURIED SANDY SOIL IN TRIAXIAL HIGH PRESSURE UNLOADING TEST BY CT TECHNIQUE |
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| LI Wenping,ZHANG Zhiyong,PU Yibing,WANG Weili,SUN Ruhua.A STUDY ON THE STRUCTURAL CHANGE OF A DEEPLY-BURIED SANDY SOIL IN TRIAXIAL HIGH PRESSURE UNLOADING TEST BY CT TECHNIQUE[J].chinese journal of theoretical and applied mechanics,2003,11(3):302-306. |
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| Authors: | LI Wenping ZHANG Zhiyong PU Yibing WANG Weili SUN Ruhua |
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| Institution: | 1. China University of Mining and Technology, Xuzhou 221008;
2. State Key Laboratory of Frozen Soil Engineering, Lanzhou Institute of Chinese Academy of Science, Lanzhuo 730000 |
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| Abstract: | A sandy-soil sample buried at nearly 600m depth in the Juye mine area of Shandong Province was tested under, triaxial unloading at 12MPa confining pressure on triaxial test machine and the microstructural change of the sandy-soil sample in the whole process was detected by CT equipment. The CT photographs are processed and analyzed with computer image analysis method. The essential characteristics of structural change of the deep buried sand soil sampling . The deformation and failure processes under the condition of high pressure unloading test are analyzed. |
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| Keywords: | Deep buried sand soil High pressure Triaxial unloading test Soil structure CT technique |
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