Abstract
Land subsidence as one of geological disasters, due to the characteristics and specificity hydrogeology, which results in the differences of subsidence in different regions. Changzhou City, in Jiangsu province, in China, underlain by a multi-layered aquifer system in Quaternary sediments in the Great Yangtze River Delta region. Take into account geological characteristics and mechanisms, the Changzhou layers can be divided respectively into four soil stratifications: phreatic aquifer, Part I aquifer ,Part II aquifer ,and substratum. According to the monitoring data of bedrock bench mark at Changzhou Qingliang primary school, get the mechanism of water-soil interaction and the law between land subsidence and water level change, and establishes numerical coupling model and simulates, that can evaluate and predict Changzhou land subsidence.
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