Analysis on Deformation Characteristics of Landslides Based on Comprehensive Monitoring

ZHANG Shuai; HE Na; ZHONG Wei; YANG Bo

doi:10.13204/j.gyjzG20123004

Volume 52 Issue 2

Feb. 2022

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ZHANG Shuai, HE Na, ZHONG Wei, YANG Bo. Analysis on Deformation Characteristics of Landslides Based on Comprehensive Monitoring[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 90-95. doi: 10.13204/j.gyjzG20123004

Citation:

ZHANG Shuai, HE Na, ZHONG Wei, YANG Bo. Analysis on Deformation Characteristics of Landslides Based on Comprehensive Monitoring[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 90-95. doi: 10.13204/j.gyjzG20123004

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Analysis on Deformation Characteristics of Landslides Based on Comprehensive Monitoring

doi: 10.13204/j.gyjzG20123004

ZHANG Shuai^1,2,
HE Na²,
ZHONG Wei^{1
,
,},
YANG Bo³

1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
3. Chongqing Geology Construction (Group) Co., Ltd, Chongqing 401121, China

Received Date: 2020-12-30
Available Online: 2022-06-30
Publish Date: 2022-02-20

Abstract

Abstract

In order to quantitatively describe the spatial deformation characteristics of landslides, based on the survey of the topography, landform and geological structure of Yutaicun Village Landslide in Chongqing, advanced comprehensive monitoring technology including absolute surface-displacement monitoring by GPS, deep deformation monitoring by Fiber Bragg Grating and crack-deformation monitoring by automatic pull-lines were conducted. Combined with the characteristics of crack deformation of Yutaicun Village Landslide, the spatial deformation law and instability failure mechanism of the landslide were analyzed comprehensively. The results showed that: 1) The comprehensive monitoring methods were conducive to comprehensive analysis of the three-dimensional deformation characteristics of Yutaicun Village Landslide in terms of surface deformation, deep deformation and crack deformation. It was an efficient, economical, and complementary monitoring method. 2) The deformation monitoring data of Yutaicun Village Landslide showed the characteristics of phased deformation for deep sliding bodies. In the early stage of instability, the overall sliding rate of the rear part of the landslide was relatively faster, and the amount of deformation increased approximately linearly with time, and the fluctuation of the surface monitoring data had a strong response on rainfall. With the development of sliding, the crack deformation at the trailing edge gradually withdrew from the growth stage, and the crack deformation near the middle sliding body was still more active, and the difference in deformation was related to the steep terrain. 3) The unfavorable terrain and water catchment condition, continuous rainfall, water resistance of bedrock, front cut slope and back-slope stacking constitute the main controlling factors for landslide deformation.
- landslide,
- comprehensive monitoring,
- deformation analysis,
- sliding mechanism

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References(18)

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