天津市低海拔地区地面沉降现状及成因分析

Analysis on land subsidence situation and formation reasons of negative landform region in Tianjin

地面沉降是天津地区主要地质灾害之一,由地面沉降引发的天津市低海拔区域分布面积逐步扩大,地表高程不断降低。为及时掌握天津市低海拔区域发展情况,文章介绍了关于天津市低海拔地区分布及地面沉降现状的最新研究,并从地下水开采及地下水位动态方面分析了引发低海拔区域地面沉降的主要原因。研究表明,天津市低海拔区域面积不断增大,地下水超采是引发该区域地面沉降的主要因素。

Land subsidence is one of the main geological disasters in Tianjin, the distribution area of negative landform region in Tianjin is gradually expanded and the surface elevation is decreasing caused by land subsidence.In order to grasp the development of negative landform region in Tianjin, this paper introduces the latest research on the distribution and land subsidence of negative landform region in Tianjin, and analyzes the main causes of land subsidence in terms of groundwater exploitation and groundwater level dynamics. The study shows that the area of negative landform region in Tianjin is increasing, and the over exploitation of groundwater is the main factor causing the land subsidence in this area.