DEFORMATION ANALYSIS OF WODA VILLAGE OLD LANDSLIDE IN JINSHA RIVER BASIN USING SBAS-INSAR TECHNOLOGY

FENG Wenkai; DUN Jiawei; YI Xiaoyu; ZHANG Guoqiang

doi:10.13544/j.cnki.jeg.2019-411

Volume 28 Issue 2

Apr. 2020

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Article Navigation > JOURNAL OF ENGINEERING GEOLOGY > 2020 > 28(2): 384-393

Feng Wenkai, Dun Jiawei, Yi Xiaoyu, et al. 2020. Deformation analysis of Woda village old landslide in Jinsha river basin using SBAS-InSAR technology[J]. Journal of Engineering Geology, 28(2): 384-393. doi: 10.13544/j.cnki.jeg.2019-411

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DEFORMATION ANALYSIS OF WODA VILLAGE OLD LANDSLIDE IN JINSHA RIVER BASIN USING SBAS-INSAR TECHNOLOGY

doi: 10.13544/j.cnki.jeg.2019-411

Stata Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China

Funds:

This study is supported by the National Natural Science Foundation of China 41977252

the Sichuan Provincial Youth Science and Technology Innovation Team Special Projects of China 2017TD0018

the Team Project of Independent Research of SKLGP SKLGP2016Z001

Received Date: 2019-10-08
Rev Recd Date: 2019-12-27
Publish Date: 2020-04-25

Abstract

Abstract

In recent years, unexpected high-level landslides have been increasing, resulting in adverse effects. This kind of geological hazard investigation is very difficult and concealed. It is difficult to solve the problem of disaster prevention and control by group survey and geological investigation alone. With the continuous improvement of the quality of radar remote sensing satellite data, the SBAS-InSAR technology in synthetic aperture Interferometric Radar(InSAR)provides a new technical approach for deformation detection of large-scale old landslides before disaster. The surface deformation of Wodacun landslide in Jinsha River Basin is monitored by SBAS-InSAR technology. The deformation results from March 30, 2017 to September 28, 2019 are obtained. Strong deformation area(Ⅰ_radar) and uniform deformation area(Ⅱ_radar) are delineated. The surface deformation rate, cumulative displacement trend and main crack deformation of the whole and local landslide in the revived area are analyzed. At the same time, the engineering geological survey and review are carried out on the spot. It is found that the resurrection and deformation signs of the old landslide are in good agreement with the interpretation results of the SBAS-InSAR technology. It is clear that the SBAS-InSAR technology has broad application prospects in the field of early warning and monitoring of geological disasters in complex mountain areas, and provides new ideas and references for monitoring and early warning similar to old landslides.
- Woda village,
- Old landslide,
- SBAS-InSAR,
- Deformation analysis,
- Verification

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References(37)

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