| 应用升降轨SBAS-InSAR技术监测昆明市地面沉降 |
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| 引用本文： | 麻源源,陈乾福,李涛,左小清,范军.应用升降轨SBAS-InSAR技术监测昆明市地面沉降[J].地理信息世界,2018(3):64-70. |
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| 作者姓名： | 麻源源 陈乾福 李涛 左小清 范军 |
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| 作者单位： | 1. 昆明理工大学 国土资源工程学院,云南 昆明,650093;2. 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(2017YFB0502700):国家民用航天计划(D010102)，国家基础测绘科技计划(2016KJ0204/2017KJ0204)，测绘地理信息公益性行业科研专项经费项目(201512022) |
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| 摘 要： | 将SBAS-InSAR技术应用于昆明主城区地面沉降监测,单独处理同一地区2014~2017年的29景升轨和32景降轨Sentinel-1A、1B数据。在升降轨模式下进行数据处理与精度验证,结果表明两种模式下所得到研究区域的平均沉降速率和时序分析基本保持一致。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、以及滇池区域,最大年均沉降速率可达-38.975 mm/a,累积沉降量达到89 mm。研究表明,昆明市地面沉降主要由于近几年城市化建设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问题引起地面软土地层下沉而产生明显的沉降现象。
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| 关 键 词： | 升降轨 SBAS-InSAR 时序分析 地面沉降 昆明 ascending and descending track SBAS-InSAR time series analysis land subsidence kunming |
Land Subsidence Monitoring in Kunming with SBAS-InSAR Technology |
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| MA Yuanyuan,CHEN Qianfu,LI Tao,ZUO Xiaoqing,FAN Jun.Land Subsidence Monitoring in Kunming with SBAS-InSAR Technology[J].Geomatics World,2018(3):64-70. |
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| Authors: | MA Yuanyuan CHEN Qianfu LI Tao ZUO Xiaoqing FAN Jun |
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| Abstract: | In this paper, small baseline bubset InSAR technology is applied to land subsidence monitoring in Kunming, sentinel-1A and sentinel-1B data were processed separately for 29 scenes of ascending track and 32 scenes of dscending track in the same area from 2014 to 2017. In ascending and descending track modes to complete the data processing and precision verification, the results show that the average subsidence rate and time series analysis are basically consistent for the same area in the two modes. The study found that some subsidence funnels are mainly located in residential areas, roads, subway, highway and Dianchi, the highest average subsidence rate is -38.975 mm/a and the maximum subsidence is 89 mm in the subsidence funnel. The study shows that the land subsidence in Kunming is mainly due to the rapid development of urbanization and rail transit construction in recent years, resulting in densely populated residential area and traffic networks, surface load increases, underground tunnel excavation and groundwater mining and other issues caused by the ground soft soil subsidence and significant settlement phenomenon. |
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