北京市地面沉降发展及对城市建设的影响

地面沉降是北京市平原区主要地质灾害之一,最早在1935年发现于西单至东单一带,到目前为止已经形成了多个地面沉降中心,到2005年底,累计沉降量大于50mm的沉降区达4114 km~2,大于100mm的沉降区达2815km~2。地面沉降已经对城市基础设施造成一定程度的破坏,并且已经对奥运场馆、规划新城、CBD等重要区域构成潜在威胁,所以必须及时制定完善的防治措施来降低地面沉降的危害。

The Impacts of Ground Subsidence on Urban Construction in Beijing

Ground subsidence is one of the main geologic hazards in Beijing plain area,which was first found along Xidan and Dongdan in 1935.Up to the present,a number of ground subsidence centers have formed,and by the end of 2005,the subsidence area had reached 4114 km~2 where the cumulative subsidence exceeded 50 mm,and 2815 km~2 where it was more than 100 mm.Ground subsidence has damaged the urban infrastructure and become a potential threat for the Olympic venues,planned new cites,the CBD and such important zones. Therefore,it is urgent to work out comprehensive preventive and control measures in order to minimize the damage.