Dynamic Behavior and Deposit Features of Debris Avalanche in Model Tests Using High Speed Photogrammetry

Yong Wei, Qiang Xu, He Yang, Huajin Li and Pinglang Kou
Additional contact information
Yong Wei: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
Qiang Xu: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
He Yang: School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
Huajin Li: School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
Pinglang Kou: College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Sustainability, 2020, vol. 12, issue 16, 1-18

Abstract: Model tests of debris avalanche can not only illuminate formation mechanisms but also represent deformation and motion processes. At present, the static terrain data of model tests are measured before and after experiments using terrestrial laser scanning. To study the motion and deformation of research objects, it is necessary to explore new techniques to obtain dynamic terrain data in the course of experimentation. In this paper, taking specified experimental tests of debris avalanche as an example, the method of 4D reconstruction using high-speed close-range photogrammetry is described in detail. The dynamic terrain data of model tests were obtained after the data were processed. Then, the dynamic behavior and deposit features of debris avalanche were analyzed in detail. Results show that dynamic terrain data of model tests can be obtained rapidly and accurately with this method. The propagation and deposit processes of the debris avalanche have evident stage characteristics, which can be divided into the starting, acceleration, constant, and deceleration stages. The granular size, slope angle, and barrier effect have a great influence on the travel distance and duration of the debris avalanche. The depth of the intermediate and leading area of the debris avalanche increased gradually and the depth of the trailing area first increased then decreased. We believe that this approach can also be applied to other domains involving the acquisition of dynamic terrain data and, thus, deserves to be applied widely.

Keywords: high speed photogrammetry; spatial data; 4D model; dynamic terrain; debris avalanche; model test (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/12/16/6578/pdf (application/pdf)
https://www.mdpi.com/2071-1050/12/16/6578/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:12:y:2020:i:16:p:6578-:d:398862

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().