Journal of shanghai Jiaotong University (Science) ›› 2013, Vol. 18 ›› Issue (3): 278-283.doi: 10.1007/s12204-013-1394-1

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Numerical Evaluation of Land Subsidence Induced by Dewatering in Deep Foundation Pit

Numerical Evaluation of Land Subsidence Induced by Dewatering in Deep Foundation Pit

ZHANG Dong-dong (张冬冬), SONG Chun-yu* (宋春雨), CHEN Long-zhu (陈龙珠)   

  1. (Institute of Engineering Safety and Disaster Prevention, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  2. (Institute of Engineering Safety and Disaster Prevention, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Online:2013-06-28 Published:2013-08-12
  • Contact: SONG Chun-yu(宋春雨) E-mail:chysong@sjtu.edu.cn

Abstract: o predict the behavior of land subsidence due to groundwater withdrawal, a 3D numerical model is established. The model takes the confined aquifer and soft deposit of Ningbo into account. According to the pumping test data, changing regulations of groundwater level, and land subsidence during dewatering are analyzed. Comparison between the calculated value and measured value shows that the 3D model simulates the measured value fairly well. The future behavior of land subsidence during dewatering period provides the scientific basis for the construction of deep foundation.

Key words: deep foundation pit| groundwater pumping|3D seepage|land subsidence

摘要: o predict the behavior of land subsidence due to groundwater withdrawal, a 3D numerical model is established. The model takes the confined aquifer and soft deposit of Ningbo into account. According to the pumping test data, changing regulations of groundwater level, and land subsidence during dewatering are analyzed. Comparison between the calculated value and measured value shows that the 3D model simulates the measured value fairly well. The future behavior of land subsidence during dewatering period provides the scientific basis for the construction of deep foundation.

关键词: deep foundation pit| groundwater pumping|3D seepage|land subsidence

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