张雪琪, 朱武, 李文梁, 张勤. 2020: 时序InSAR技术用于延安新区高填方地面沉降监测. 工程地质学报, 28(S1): 102-107. DOI: 10.13544/j.cnki.jeg.2020-342
    引用本文: 张雪琪, 朱武, 李文梁, 张勤. 2020: 时序InSAR技术用于延安新区高填方地面沉降监测. 工程地质学报, 28(S1): 102-107. DOI: 10.13544/j.cnki.jeg.2020-342
    ZHANG Xueqi, ZHU Wu, LI Wenliang, ZHANG Qin. 2020: MONITORING THE GROUND SUBSIDENCE OVER YAN'AN HIGH-FILLED REGION BY USING TIME SERIES INSAR TECHNIQUE. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 102-107. DOI: 10.13544/j.cnki.jeg.2020-342
    Citation: ZHANG Xueqi, ZHU Wu, LI Wenliang, ZHANG Qin. 2020: MONITORING THE GROUND SUBSIDENCE OVER YAN'AN HIGH-FILLED REGION BY USING TIME SERIES INSAR TECHNIQUE. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 102-107. DOI: 10.13544/j.cnki.jeg.2020-342

    时序InSAR技术用于延安新区高填方地面沉降监测

    MONITORING THE GROUND SUBSIDENCE OVER YAN'AN HIGH-FILLED REGION BY USING TIME SERIES INSAR TECHNIQUE

    • 摘要: 2018年8月,重大黄土丘陵沟壑区域工程造地项目——延安新区岩土工程全面完成,共形成建设用地及生态综合治理用地21.3 km2。为掌握工程造地的变形规律,本文基于自2014年10月~2019年7月期间的191景Sentinel-1A数据,利用短基线集时序InSAR(SBAS-InSAR)技术,获取了研究区时空形变结果,并对沉降机理进行了讨论分析。结果表明沉降区主要集中在填埋区部分,最大年平均形变速率达到10 cm ·y-1。通过对监测结果的分析和实地调查,推测出研究区域的地表沉降原因是大规模填方工程引起的填方体固结,其中填方厚度为控制沉降速率的主要因素。研究结果表明SBAS-InSAR技术在工程造地区域的地表沉降监测方面具有较强的能力,提取的形变结果可为生产单位和政府部门分析决策提供依据。

       

      Abstract: In August 2018,the land creation project over Yan'an loess hilly-gully region has completed its geotechnical engineering. A total of 21.3 km2 of new land is created for urban construction. In order to monitor the ground subsidence due to land creation, 191 sentinel-1A images spanning from October 2014 to July 2019 are processed by small baseline subset InSAR(SBAS-InSAR)technique. The results showed that the subsidence area is mainly concentrated in the land filling area, where the maximum deformation rate reaches 10 cm·y-1. Based on the analysis and field investigation, the severe subsidence over the study area is caused by the consolidation of filling soil, and the filling thickness is the main factor controlling the subsidence rate. Our result demonstrates the reliability of SBAS-InSAR technique in ground subsidence monitoring over soil-filling region, and the obtained deformation results can provide sound management for local government.

       

    /

    返回文章
    返回