基于SBAS-InSAR技术的广东茂名市地表沉降监测研究  

Surface Subsidence Monitoring Based on SBAS-InSAR Technology in Maoming City,Guangdong Province

作　　者：徐力峰 XU Lifeng(Guangdong Hydrological Environmental Geological Survey Center,Guangzhou,Guangdong 510080;Guangdong Nonferrous Engineering Survey and Design Institute,Guangzhou,Guangdong 510080)

机构地区：[1]广东省水文环境地质调查中心,广东广州510080 [2]广东有色工程勘察设计院,广东广州510080

出　　处：《地质与勘探》2025年第2期288-296,共9页Geology and Exploration

摘　　要：地面沉降监测对城市发展与规划具有重要意义,利用遥感数据开展地面沉降监测是目前研究的热点之一。传统的InSAR、D-InSAR等技术具有一定的技术局限,本文提出了一种基于SBAS-InSAR的方法,基于2015年6月至2024年6月期间广东茂名市的236景Sentinel-1A数据,获得了茂名市高新区、水东湾新区、滨海新区三个重点调查区的时序地表沉降结果。结果表明,高新区在2020年出现显著沉降,其余时间段形变较为平缓;水东湾新区在研究期间持续沉降,成为沉降最严重的区域,最大累计沉降超过320 mm;滨海新区在2023年前持续沉降,但2023年后沉降速率有所减缓。研究显示,茂名市地表形变主要受建筑工程活动、地下水开采及地质构造活动的影响。本文的研究成果为当地政府制定防灾减灾策略和优化城市规划提供了科学依据,为地面沉降监测提供了新的技术支撑。Land subsidence monitoring is of great significance for urban development and planning,and the use of remote sensing data for land subsidence monitoring is currently one of the research hotspots.Traditional InSAR,D-InSAR and other technologies have certain technical limitations.This paper proposes a method based on SBAS-InSAR,which uses 236 Sentinel-1A data from June 2015 to June 2024 in Maoming City,Guangdong Province to obtain time-series land subsidence results in three key survey areas:Maoming High-tech Zone,Shuidongwan New Area,and Binhai New Area.The results indicate that the High-tech Zone experienced significant subsidence in 2020,while the deformation was relatively gentle during the rest of the time period.During the research period,the Shuidongwan New Area continued to experience subsidence,becoming the area with the most severe subsidence,with a maximum cumulative subsidence exceeding 320 mm.The Binhai New Area continued to experience subsidence before 2023,but the subsidence rate will slow down after 2023.Research shows that surface deformation in Maoming City is mainly influenced by construction activities,groundwater extraction,and geological tectonic activities.The research results provide scientific basis for local governments to formulate disaster prevention and reduction strategies and optimize urban planning,and provide new technical support for land subsidence monitoring.

关 键 词：地面沉降 SBAS-InSAR技术方法 Sentinel-1A 人类工程活动 茂名市 广东 

分 类 号：TU196[建筑科学—建筑理论]