Study on seepage field characteristics of foundation pits |
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| Authors: | LI Chun-zhong CHEN Guo-xing FAN You-wei |
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| Institution: | 1. Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2. Co. Ltd. of Nanjing Institute of Surveying, Mapping & Geotechnical Investigation, Nanjing 210005, China |
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| Abstract: | Based on Biot consolidation theory and Terzaghi effective stress principle, a coupling numerical simulation was done to analyze the seepage field characteristics of foundation pit during the dewatering by FEM. Taking the dewatering practice of Jiuhuashan Tunnel foundation pit engineering for example, the shape of phreatic surface, the distribution of seepage velocity and the settlement of ground are analyzed; and the influences of different distribution and depth of draining wells on the seepage field characteristics and ground settlement are compared. This research redounds to understanding mutual action mechanism between groundwater and soils. It provides credible directions to the draining well design for foundation pit engineering. |
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| Keywords: | foundation pit dewatering seepage fluid-solid coupling seepage field characteristics |
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