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4114km2,大于1OOmm的沉降区达2815km2。地面沉降已经对城市基础设施造成一定程度的损坏,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 Land Subsidence on City Build of Beijing

Land subsidence is one of the main geologic hazards in Beijing Plain zone, which was first found in Xidan and Dongdan in 1935 and has formed several land subsidence centers, and until 2005, subsidence area has amounted to 4114 km2 where cumulative subsidence is more than 50mm, and 2815km2 where cumulative subsidence is more than 100mm. Ground subsidence has damaged infrastructure and became a potential threaten for Olympic gym, programmed new cites, CBD and this kinds of important zone. So it is urgent to establish comprehensive preventive measures in order to minimize the damage.