三峡库区垂直形变有限元模拟分析  

Finite Element Simulation and Analysis of Vertical Deformation in the Three Gorges Area

作　　者：何婵军[1,2] 杜志彪[2,3] 

机构地区：[1]湖北省水利水电规划勘测设计院,湖北武汉430075 [2]中国地震局地震研究所,湖北武汉430071 [3]广州港航道工程有限公司,广东广州510700

出　　处：《测绘科学技术学报》2013年第5期456-460,共5页Journal of Geomatics Science and Technology

摘　　要：基于SRTM3-DEM数据,利用ANSYS软件自底向上地建立了三峡库区有限元模型。模拟了三峡水库蓄水至135,156和175 m时的垂直形变场,主要形交区域为香溪口、坝址处和巴东段。通过分析可知,垂直形变主要由水体荷载引起,影响范围为距库岸20 km,地层深度为17 km。结合地质资料发现:坝址两端地质构造相对稳定,香溪口附近较复杂。Based on the SRTM3-DEM data,the finite element model of the Three Gorges area was built by means of the bottom-up method using ANSYS analysis software,and vertical deformation fields of the Three Gorges area caused by the impoundments to 135 m,156 m and 175 m were simulated.Three main deformation regions were Xiangxi bayou,the dam area and Badong reach.Analyzing results showed that the vertical deformation was mainly caused by water load,the affecting area of which was within 20 km away from the dam banks and 17 km in depth.Combined with the geological background,the geological structure and the crust were stable near the dam and complex at Xiangxi river nearby.

关 键 词：三峡库区 ANSYS软件 有限元模拟 全球定位系统 垂直形变场 

分 类 号：P228[天文地球—大地测量学与测量工程]