Abstract
Abstract. Land subsidence in shanghai has been found for more than 70 years. In the early years, it was mainly caused by groundwater exploitation. In recent years, engineering dewatering in shallow ground (within 90 m) has become a major source for land subsidence in the rapid urbanization course. A management partition of land subsidence induced by foundation pit dewatering for the first confined aquifer was suggested.
Highlights
Shanghai is the economic and financial center of China
During the rapid urbanization in recent years, lots of underground engineering were constructed, the engineering dewatering in shallow ground has become a major source contributing to increasing land subsidence
Shen and Xu (2011) used numerical simulation to predict the behavior of land subsidence in Shanghai due to pumping of groundwater
Summary
Shanghai is the economic and financial center of China. In 1939, land subsidence was first observed and its maximum value has reached 2.0 m until now. The subsidence was caused by groundwater extraction for water supply. During the rapid urbanization in recent years, lots of underground engineering were constructed, the engineering dewatering in shallow ground (within 90 m) has become a major source contributing to increasing land subsidence. Xu et al (2009) analyzed the geohazards which may occur during the construction and maintenance of infrastructures in Shanghai, and the confined water was one of the main causes. Shen and Xu (2011) used numerical simulation to predict the behavior of land subsidence in Shanghai due to pumping of groundwater. Wang et al (2012, 2013), Zhang et al (2013), Luo et al (2008) and Zhou et al (2010) used numerical simulation to analyze the land subsidence caused by foundation pit dewatering.
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