| PS-InSAR和SBAS-InSAR技术对昆明主城区地面沉降监测的对比分析 |
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| 引用本文： | 范军,左小清,李涛,陈乾福.PS-InSAR和SBAS-InSAR技术对昆明主城区地面沉降监测的对比分析[J].测绘工程,2018(6):50-58. |
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| 作者姓名： | 范军 左小清 李涛 陈乾福 |
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| 作者单位： | 昆明理工大学 国土资源工程学院,云南 昆明,650093
国家测绘地理信息局卫星测绘应用中心,北京,100830 |
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| 基金项目： | 国家重点研发计划资助项目(2017YFB0502700)，国家民用航天计划资助项目(D010102)，国家基础测绘科技计划资助项目(2016KJ0204/2017KJ0204)，测绘地理信息公益性行业科研专项经费资助项目(201512022) |
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| 摘 要： | 以昆明主城区为例,分别利用PS-InSAR和SBAS-InSAR技术对2014—2017年间29景升轨Sentinel-1A数据进行沉降监测,对比两种技术得到的沉降结果,进行剖面图分析与时序分析。结果表明,PS-InSAR和SBAS-InSAR技术监测结果具有一致性、相关性和可靠性。研究发现,昆明市沉降漏斗主要位于居民区、地铁、道路、高速公路以及滇池等区域,最大年沉降速率可达-39.580mm/a,累积沉降量达到85mm。研究表明,昆明主城区地面沉降主要由于近几年城市和轨道交通建设的飞跃发展,导致居民区和交通网络密集,地面载荷增加,地下隧道开挖与地下水开采等原因引起地面软土地层下沉。
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| 关 键 词： | 时序分析 地面沉降 昆明市 time series analysis ground subsidence Kunming |
Analysis and comparison of PS-InSAR and SBAS-InSAR for ground subsidence monitoring in the main city of Kunming |
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| FAN Jun,ZUO Xiaoqing,LI Tao,CHEN Qianfu.Analysis and comparison of PS-InSAR and SBAS-InSAR for ground subsidence monitoring in the main city of Kunming[J].Engineering of Surveying and Mapping,2018(6):50-58. |
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| Authors: | FAN Jun ZUO Xiaoqing LI Tao CHEN Qianfu |
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| Abstract: | This paper,taking the main city of Kunming as an example,respectively uses PS-InSAR and SBAS-InSAR technology for ground subsidence monitoring from 2014 to 2017.Comparing the two results, it completes section drawing analysis and time series analysis.The monitoring result shows that PS-InSAR and SBAS-InSAR are consistent,relevant and reliable.The study finds that some subsidence funnels are mainly located in residential areas,roads,subway,highway and Dianchi,etc.The highest average subsidence rate is —39.580 mm/yr and the maximum subsidence is 85 mm in the subsidence funnel.The study show s that the ground subsidence in Kunming is mainly due to the rapid development of urban and transportation construction in recent years,including residential and traffic network intensive,ground load increase,underground tunnel excavation and groundwater exploitation,etc.These factors can cause soft soil subsidence and lead to significant subsidence phenomenon. |
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