Surficial deformation monitoring and analyzing to the Xiazangtan landslides based on InSAR method

Lei YUE; Changyi LIU; Xiaoming CONG; Binyuan TANG; Jiangtao FU; Guangyan XING; Haochuan LEI; Jimei ZHAO; Weitao LYU; Xiasong HU

doi:10.16030/j.cnki.issn.1000-3665.202307049

Shuiwen dizhi gongcheng dizhi (May 2024)

Surficial deformation monitoring and analyzing to the Xiazangtan landslides based on InSAR method

Lei YUE,
Changyi LIU,
Xiaoming CONG,
Binyuan TANG,
Jiangtao FU,
Guangyan XING,
Haochuan LEI,
Jimei ZHAO,
Weitao LYU,
Xiasong HU

Affiliations

Lei YUE: School of Geological Engineering, Qinghai University, Xining, Qinghai　810016, China
Changyi LIU: School of Geological Engineering, Qinghai University, Xining, Qinghai　810016, China
Xiaoming CONG: Qinghai Institute of Geological Surveying and Mapping Geographic Information, Xining, Qinghai　810001, China
Binyuan TANG: Qinghai Institute of Geological Surveying and Mapping Geographic Information, Xining, Qinghai　810001, China
Jiangtao FU: Academy of Agriculture and Forestry Sciences, Qinghai University, Xining, Qinghai　810016, China
Guangyan XING: College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai　810016, China
Haochuan LEI: School of Geological Engineering, Qinghai University, Xining, Qinghai　810016, China
Jimei ZHAO: College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai　810016, China
Weitao LYU: School of Geological Engineering, Qinghai University, Xining, Qinghai　810016, China
Xiasong HU: School of Geological Engineering, Qinghai University, Xining, Qinghai　810016, China

DOI: https://doi.org/10.16030/j.cnki.issn.1000-3665.202307049
Journal volume & issue: Vol. 51, no. 3
pp. 158 – 170

Abstract

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The development of super large scale landslides on the upper reaches of the Yellow River has brought certain impacts and potential hazards to the cascade power stations in the upper reaches of the Yellow River represented by the Longyang Gorge Hydropower Project, as well as the production, life, and property safety of residents. To analyze the surface deformation characteristics in the distribution area of super large scsle landslides in the upper reaches of the Yellow River. This study used InSAR to extract and analyze the surface deformation information of landslide by using Sentinel-1A image data of ascending and descending orbit in the Xiazangtan landslide area in the upper right bank of the Yellow River in Jianzha County, Qinghai Province. The monitoring results based on the InSAR method were then verified on site through field investigation. The results show that the maximum deformation rates of the landslide surface in the area obtained from the ascending and descending Sentinel-1A image data are 24 mm/a and 21 mm/a, respectively, with the maximum cumulative deformation of 133 mm and 128 mm. During the monitoring period from 2017 to 2022, with the increase in monitoring time, the cumulative displacement of secondary landslide feature points A and B located at the landslide front of Xiazangtan showed a gradual increase trend. The cumulative deformations of landslide surface obtained based on PS-InSAR and SBAS-InSAR methods have consistent characteristics, and the results show that the InSAR method is suitable for monitoring the surface deformation of super large scale landslide from Lagan Gorge to Sigou Gorge in the upper reaches of the Yellow River. This study not only provides an effective method for monitoring the surface deformation of super large scale landslides in the upper reaches of the Yellow River, but also provides data support and practical guidance for the effective prevention and treatment of ancient landslide resurrection in the basin.

Published in Shuiwen dizhi gongcheng dizhi

ISSN: 1000-3665 (Print)
Publisher: Editorial Office of Hydrogeology & Engineering Geology
Country of publisher: China
LCC subjects: Science: Geology
Website: https://www.swdzgcdz.com/indexen.htm

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