基于SBAS-InSAR的成都平原地面形变监测及影响因素分析  

Ground Deformation Monitoring and Influencing Factors Analysis of Chengdu Plain Based on SBAS-InSAR

作　　者：刘灏 刘洋 曾帅 房浩[3] 刘艳明[3] 王德都 LIU Hao;LIU Yang;ZENG Shuai;FANG Hao;LIU Yanming;WANG Dedu(Sichuan Institute of Land and Space Ecological Restoration and Geological Hazard Prevention,Chengdu 610081,Sichuan;Department of Nature Resources of Sichuan Province,Chengdu 610072,Sichuan;China Institute of Geo-environmental Monitoring,Beijing 100081;The First Geological Brigade of Sichuan Bureau of Geology,Chengdu 610100,Sichuan)

机构地区：[1]四川省国土空间生态修复与地质灾害防治研究院,四川成都610081 [2]四川省自然资源厅,四川成都610072 [3]中国地质环境监测院,北京100081 [4]四川省地质局第一地质大队,四川成都610100

出　　处：《四川师范大学学报（自然科学版）》2024年第3期377-383,共7页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金面上项目(41572309);四川省自然资源厅项目(510201202110398);中国地质调查局地质调查项目(DD20211256)。

摘　　要：为研究成都平原区域地面形变现状并分析影响因素,利用差分干涉测量短基线集时序分析技术(SBAS-InSAR)监测成都平原地面形变情况,研究结果表明:成都平原区域地面形变量较小,多为点状形变,个别地区存在块状形变或线状分布;形变速率较快的地块多为建设工程扰动引起的,德阳市相对比成都市更易受到工程建设的影响;大部分人工建筑区域累计形变小于14 mm,地表形变速率大于10 mm/a图斑面积为115.83 km2,主要分布在成都市邛崃市、崇州市以及德阳市旌阳区、广汉市等地.从地下水开采和土地利用方面分析成都平原地面形变影响因素得出成都平原地下水开采与地面形变现状存在一定关系,不同土地利用类型中耕地与地表形变的契合度最高,而形变面积较大的地块主要位于建筑区域.根据现场核查,SBAS-InSAR结果与现场情况较为一致,证明了SBAS-InSAR技术在地面形变监测中具有较好适用性.本研究成果可为成都平原城市建设以及国土空间规划提供依据.In order to study the current situation of ground deformation in Chengdu Plain and analyze the influencing factors,the differential interferometry Short Baseline set time series analysis technique(SBAS-InSAR)was used to monitor the ground deformation in Chengdu Plain.The results show that the ground shape variables in Chengdu Plain are small,mostly point deformation,and some areas have massive deformation and linear distribution.Deyang City is more susceptible to the disturbance of construction than Chengdu City.The cumulative deformation of most artificial construction areas was less than 14 mm.The spot area,where deformation rate is more than 10 mm/a is 115.83 km2,mainly distributed in Chengdu Qionglai City,Chongzhou City,Jingyang District and Guanghan City,etc.By analyzing the influencing factors of ground deformation in Chengdu Plain from the aspects of groundwater exploitation and land use,it is concluded that there is a certain relationship between groundwater exploitation and ground deformation in Chengdu Plain.Among different land use types,the fit degree between cultivated land and ground deformation is the highest,and the plots with large deformation area are mainly located in construction areas.According to field verification,the results of SBAS-InSAR are consistent with the field situation,which proves that SBAS-InSAR technology has good applicability in ground deformation monitoring.The research results can provide a basis for urban construction and territorial space planning of Chengdu Plain.

关 键 词：成都平原 地面形变 地面沉降 地质灾害 SBAS-InSAR 土地利用 

分 类 号：P237[天文地球—摄影测量与遥感]