Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV

ZHANG Huan; JU Nengpan; LU Yuan; WAN Xun; JIAN Zhiquan

doi:10.16030/j.cnki.issn.1000-3665.202008010

2021 Vol. 48, No. 6

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Article navigation > Hydrogeology & Engineering Geology > 2021 > 48(6): 171-179

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ZHANG Huan, JU Nengpan, LU Yuan, WAN Xun, JIAN Zhiquan. Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV[J]. Hydrogeology & Engineering Geology, 2021, 48(6): 171-179. doi: 10.16030/j.cnki.issn.1000-3665.202008010

Citation:

ZHANG Huan, JU Nengpan, LU Yuan, WAN Xun, JIAN Zhiquan. Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV[J]. Hydrogeology & Engineering Geology, 2021, 48(6): 171-179. doi: 10.16030/j.cnki.issn.1000-3665.202008010

Rapid remodeling of three-dimensional terrain and stability analyses of landslide based on UAV

1.
State Key Laboratory of Geological Prevention and Geological Protection, Chengdu University of Technology, Chengdu, Sichuan　610059, China
2.
Survey and Design Company of Sichuan Road & Bridge(Group) Co. Ltd., Chengdu, Sichuan　610041, China

More Information

Corresponding author: JU Nengpan, jnp@cdut.edu.cn

Received Date: 02 August 2020

Revised Date: 27 January 2021

Publish Date: 15 November 2021

Abstract

Abstract

Rapid and accurate quantitative investigation and evaluation of landslides can provide scientific basis for the emergency treatment of landslide, and the unmanned aerial vehicle (UAV) aerial photography system has become a reliable means for geological disaster investigation due to its flexibility and rapid response. In this paper, the Pingqing landslide in Ceheng is taken as an example, and a set of processes of rapid slope investigation and quantitative evaluation based on the light UAV aerial photography technology are summarized. The path of establishing high-precision 3D geological model using various software is expounded, and the finite difference method (FDM) is applied to analyze the deformation mechanism and evaluate the stability of the landslide. The results show that (1) the Global mapper, Pix4Dmapper, Rhinoceros and other software are used to manage the data acquired by UAV and to establish a 3D model, which is convenient, rapid and reliable. (2) In the procedure, landslide investigation and evaluation based on UAV, the traditional qualitative analysis is combined with the quantitative analysis by means of numerical simulation, which can provide convincing basis and supporting data for emergency after. (3) The Pingqing landslide in Ceheng is a creepage-pull crack landslide caused by gravity stress of slope body under rainfall condition. At the period of investigation, the landslide had activated and the surface cracks had tended to expand rapidly.
- landslide /
- light UAV /
- 3D modeling /
- numerical simulation /
- emergency investigation

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References

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