基于SBAS-InSAR的长春市城市地表沉降及成因机理研究
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摘要
随着经济的迅速发展,城市地面沉降问题已经日益严重。利用2015—2018长春市区范围内的27景sentinel-1降轨数据,采用SBAS-InSAR技术研究其地表沉降并分析成因机理。结果表明:长春城区总体呈沉降趋势,沉降成因主要来源于区域地质构造;部分区域出现较大沉降异常,其中,逯家窝堡—小高家堡—先锋屯一带最大沉降速率为23.31mm/a,绿园区的红民村附近沉降速率为21.75mm/a,地铁二号线站口乐群街、世纪大街、东方广场的沉降速率为13.26～17.68mm/a。沉降成因主要由于城建建设、地下水开采导致地质构造条件发生变化引起区域城市地面沉降。
With the rapid development of economy,the problem of urban land subsidence has become increasingly serious.This paper makes full use of 27 sentinel-1 descent data from 2015 to 2018 in Changchun urban area and the SBAS-InSAR technology to study the surface subsidence and analyze the cause of the subsidence.The result shows that there is a general tendency of subsidence in Changchun urban area,and the cause of subsidence mainly comes from the regional geological formation.Large subsidence anomalies have occurred in some areas.Among them,the maximum subsidence rate in the area of Jiajiawobao-Xiaogaojiabao-Xianfengtun is 23.31 mm/a,the subsidence rate near Hongmin Village in the Green Park District is 21.75 mm/a,and the subsidence rate of Lequn Street,and Century Street and Dongfang Square at Line 2 of Metro Station is from 13.26 to 17.68 mm/a.The subsidence is mainly caused by urban construction and groundwater exploitation,which results in changes in geological structural conditions and cause land subsidence in regional cities.
With the rapid development of economy,the problem of urban land subsidence has become increasingly serious.This paper makes full use of 27 sentinel-1 descent data from 2015 to 2018 in Changchun urban area and the SBAS-InSAR technology to study the surface subsidence and analyze the cause of the subsidence.The result shows that there is a general tendency of subsidence in Changchun urban area,and the cause of subsidence mainly comes from the regional geological formation.Large subsidence anomalies have occurred in some areas.Among them,the maximum subsidence rate in the area of Jiajiawobao-Xiaogaojiabao-Xianfengtun is 23.31 mm/a,the subsidence rate near Hongmin Village in the Green Park District is 21.75 mm/a,and the subsidence rate of Lequn Street,and Century Street and Dongfang Square at Line 2 of Metro Station is from 13.26 to 17.68 mm/a.The subsidence is mainly caused by urban construction and groundwater exploitation,which results in changes in geological structural conditions and cause land subsidence in regional cities.
引文
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[8]顾兆芹,宫辉力,张有全,等.PS-InSAR技术在北京平原区地面沉降监测中的应用研究[J].光谱学与光谱分析,2014,34(7):1898-1902.
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[10]王会强,冯光财,喻永平,等.基于C波段和L波段的SBAS-InSAR技术监测广州地面沉降[J].测绘工程,2016,25(11):60-64.
[11]孙晓鹏,鲁小丫,文学虎,等.基于SBAS-InSAR的成都平原地面沉降监测[J].国土资源遥感,2016,28(3):123-129.
[12]罗铖.基于SBAS_InSAR的西安地表沉降监测[D].西安:长安大学,2012.
[13]马金涛,鲍新华,曹剑锋,等.长春地区浅层地热能利用条件分析[J].现代地质,2013,27(2):460-467.
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[15]黄静莉.长春市中心区地下空间岩土体可利用性分析与评价[D].长春:吉林大学,2013.
[16]张建伟,王锡魁,隋维国,等.长春地区地震地质构造活动性分析[J].内陆地震,2010,24(3):269-274.
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