Climate Change Research ›› 2015, Vol. 11 ›› Issue (4): 256-262.doi: 10.3969/j.issn.1673-1719.2015.04.004

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Control Strategy of Land Subsidence in Shanghai Under Sea-Level Rise

Wang Hanmei1, 2, 3, Jiao Xun1, 2, 3   

  1. 1 Shanghai Institute of Geological Survey, Shanghai 200072, China;
    2 Key Laboratory of Land Subsidence Monitoring and Prevention, Ministry of Land and Resources of China, Shanghai 200072, China;
    3 Shanghai Engineering Research Center of Land Subsidence, Shanghai 200072, China

  • Received:2014-12-22 Revised:2015-04-20 Online:2015-07-31 Published:2015-07-31

Abstract: Under the status of trace settlement and higher urban security fortification, sea-level rise, due to global warming, must be considered for the control of land subsidence in Shanghai. In this paper, sea-level rise was taken as one of considerations for land subsidence control in Shanghai. Based on the monitoring results of flood-control project settlement and regional land subsidence, as well as sea-level rise impact on defense capability of flood prevention walls, it was found that regional land subsidence had a significant effect on flood-control project settlement, and the superposition of ground settlement. Sea-level rise would further reduce drainage capacity of urban flood or tide prevention projects. Then the control strategies were proposed, such as monitoring and early-warning mechanism for major public constructions, zoning control in different regions, better utilization and management for groundwater resources, improving networks for monitoring land subsidence.

Key words: land subsidence, sea-level rise, urban safety, flood-control and drainage, control strategy

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