关键词: 地面沉降;风险评价;防控对策;武汉泛后湖地区;

Abstract: In recent years，land subsidence in extensive Houhu area of Wuhan City has become an important problem restricting the development of the city.In order to scientifically control and effectively prevent land subsidence disasters，this paper select cumulative settlement，settlement rate，soft soil thickness and level of the confined water pressure as the hazard evaluation indexes，and land use type，construction intensity，population density，construction time as the vulnerability evaluation indexes，then a zoning map of land subsidence risk，vulnerability and risk are compiled through MapGIS spatial analysis function.The results show that the area of highest-risk area in extensive Houhu area accounts for about 12.82%，mainly located around Hankou Garden，Hankou City Square and Xinrong Passenger Station，while the area of high-risk area accounts for about 31.61%，which is mainly located along Fazhan Avenue and Houhu Avenue.Finally，based on the results of risk assessment，this paper puts forward multi-angle control countermeasures.The research results can provide decision-making basis for disaster prevention and reduction，urban planning and construction，sustainable development in extensive Houhu area of Wuhan City.

Key words: land subsidence；risk evaluation；control countermeasures；extensive Houhu area of Wuhan City