基于短基线集干涉测量(SBAS)技术的郑州市区地面沉降观测研究  

Study on land subsidence observation in Zhengzhou urban area based onshort baseline set interferometry (SBAS)

作　　者：王毅[1] 黄同新 Wang Yi;Huang Tongxin(The Second Geological and Mineral Investigation Institute of Henan Provincial Bureau of Geology and Mineral Resources,Zhengzhou 450051,China;Mineral Resources Exploration Center of Henan Provincial Geological Bureau,Zhengzhou 450002,China)

机构地区：[1]河南省地矿局第二地质矿产调查院,河南郑州450051 [2]河南省地质局矿产资源勘查中心,河南郑州450002

出　　处：《能源与环保》2023年第6期82-89,96,共9页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：河南省高等学校重点科研项目(19A4200)。

摘　　要：采用短基线集干涉测量(SBAS)技术方法研究了郑州市区的地面沉降特征。论述了SAR数据处理的流程和技术重点,对SAR数据处理过程中获得的各种参数进行了分析,选取覆盖郑州市区的多景RADARSAT-2雷达图像作为数据,进行短基线集干涉测量处理,根据沉降速率结果分析了郑州市区地面沉降形变特征,提取了郑州市2015—2017年间的地面沉降量,沉降速率大于20 mm/a的沉降区面积约为166 km~2。形成了3个主要的沉降区,分别为北部沉降区、西部沉降区和东部沉降区,沉降区主要分布在有软土分布工程地质亚区内。研究区引起地面沉降的原因主要为人类社会活动,突出表现在地下水利用、开采地热资源、城市基础设施建设等方面。The short baseline set interferometry(SBAS)technique is used to study the characteristics of land subsidence in Zhengzhou urban area.This paper discusses the process and technical emphasis of SAR data processing,analyzes various parameters obtained in the process of SAR data processing,selects the multi scene RADARSAT-2 radar image covering Zhengzhou urban area as the data,conducts short baseline set interferometry processing,and analyzes the characteristics of land subsidence deformation in Zhengzhou urban area according to the subsidence rate results.According to the research,this paper has extracted the land subsidence of Zhengzhou from 2015 to 2017.The area of settlement area with settlement rate greater than 20 mm/a is about 166 km 2.Three main settlement areas have been formed,namely the northern settlement area,the western settlement area and the eastern settlement area.The settlement area is mainly distributed in the engineering geological sub area with soft soil.The main cause of land subsidence in the study area is human social activities,which is highlighted in the utilization of groundwater,exploitation of geothermal resources,urban infrastructure construction,etc.

关 键 词：郑州市区 短基线集干涉测量(SBAS) RADARSAT-2 地面沉降 地表沉降分析 

分 类 号：P642.26[天文地球—工程地质学]