利用数据场模型评价北京地面沉降交通载荷程度

发布时间：2018-06-07 16:33

本文选题：地面沉降 + PS-InSAR　；参考：《吉林大学学报(地球科学版)》2017年05期

【摘要】：地面沉降是指地面标高降低的一种缓变地质灾害现象,严重时对城市建设和人民生活会构成威胁。为评价地面沉降交通载荷程度,利用永久散射体干涉测量(PS-InSAR)技术提取北京东部地区沉降信息,利用数据场模型,以地铁站信息和道路节点信息为指标,采用因子贡献权重方法,获取北京地面沉降交通载荷程度分区图。研究结果表明:PS-InSAR方法可以获取区域地面沉降的空间分布趋势,研究区内最大沉降速率达到77.69 mm/a;地面沉降交通高载荷主要分布在北京市朝阳区北部与中部区域,而交通低载荷区域主要位于远离城市重要交通道路和地铁线路不发达乡镇。
[Abstract]:Land subsidence is a kind of slow change geological hazard phenomenon which reduces the elevation of the ground, which will threaten the urban construction and the people's life seriously. In order to evaluate the traffic load degree of land subsidence, the permanent scatterer interferometry (PS-InSAR) technique is used to extract the settlement information in eastern Beijing. The data field model is used to take the information of subway station and road node as the index, and the factor contribution weight method is adopted. To obtain Beijing land subsidence traffic load degree zoning map. The results show that the spatial distribution trend of regional land subsidence can be obtained by using the ratio PS-InSAR method. The maximum subsidence rate in the study area is 77.69 mm / a, and the high traffic load of land subsidence is mainly distributed in the northern and central areas of Chaoyang District, Beijing. The low load area is located in the underdeveloped towns far from the important urban roads and subway lines.
【作者单位】：首都师范大学三维信息获取与应用教育部重点实验室;北京市城市环境过程与数字模拟国家重点实验室培育基地;首都师范大学资源环境与旅游学院;北京市育英学校;
【基金】：国家自然科学基金项目(4140010982,41130744,41171335) 北京市教委专项(20130419)~~
【分类号】：P642.26

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