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| 上海淤泥质粘土注浆劈裂效应的细观分析 | |
| 作者姓名： | 李辉利 陈建峰 王莉 |
| 作者单位： | 1. 上海市地质调查研究院,上海,200072 2. 同济大学地下建筑与工程系,上海,200092 3. 上海市广联建设有限公司,上海,200438 |
| 基金项目： | 上海市重点学科建设项目资助(B308) |
| 摘 要： | 劈裂注浆是目前应用最广泛的一种注浆方法，理论研究落后于实际应用。基于颗粒流理论中的流固耦合原理，对上海淤泥质软粘土劈裂注浆过程进行了颗粒流模拟研究，从细观角度研究了土体劈裂过程中裂隙的形态以及土体孔隙率、应力变化，并与相关的试验结果进行比较。结果表明，运用颗粒流理论及程序研究土体注浆劈裂问题是可行的，且在可视化角度上具有很好的优势，可以直接观察到土体劈裂产生及发展的全过程。 |
| 关 键 词： | 淤泥质粘土 劈裂注浆 颗粒流 流固耦合 细观分析 |
Meso-mechanical Analysis of Fracture Grouting in Shanghai Silt Clay |
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| Authors: | LI Hui-Li CHEN Jian-Feng WANG Li |
| Institution: | LI Hui-Li1,CHEN Jian-Feng2,WANG Li3(1.Shanghai Institute of Geological Survey,Shanghai 200072,China,2.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,3.Shanghai Guanglian Construction Development Co.,Ltd.,Shanghai 200438,China) |
| Abstract: | As an effective method of the grouting technique, the fracture grouting has been widely used in civil engineering, but the theoretical study is seldom concerned. Based on the fluid-solid coupling theory in particle flow theory, fracture grouting process in soil is simulated, the process of fracture grouting in Shanghai silt clay is researched, including the forms of physical mechanism, porosity of soil and variation of stress. The results show that the use of PFC for study of fracturing in soil is feasible, and has a aood advantange. |
| Keywords: | silt clay fracture grouting particle flow fluid-solid coupling meso-mechanical analysis |
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