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ORIGINAL RESEARCH article

Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 12 - 2024 | doi: 10.3389/feart.2024.1501648
This article is part of the Research Topic Failure Analysis and Risk Assessment of Natural Disasters Through Machine Learning and Numerical Simulation: Volume IV View all 7 articles

Unveiling the prediction model and mechanism of the collapse of bank slope in the Lancangjiang Area

Provisionally accepted
Xiaofan An Xiaofan An 1Shuangfeng Guo Shuangfeng Guo 2*Guang-Hong Ju Guang-Hong Ju 1He Bai He Bai 1Hua Hu Hua Hu 1Zhe Wang Zhe Wang 3Hikohiro Hu Hikohiro Hu 2
  • 1 PowerChina Northwest Engineering Corporation Limited,, Xi'an, Shanxi, China
  • 2 Nanjing Tech University, Nanjing, China
  • 3 Beijing Municipal Road and Bridge Technology Development Co, Beijing, China

The final, formatted version of the article will be published soon.

    This study takes the bank collapse at the left bank of Badi Township of the Lidi Hydropower Station in the Lancang Area as an example. To address the lack of in-depth research on the prediction model and mechanisms of bank collapse, this study conducts field drilling surveys, investigates influencing factors, analyzes causal mechanisms, and proposes prediction methods based on the geological survey data of bank collapse in the reservoir area. The study explores the stratigraphic lithology, determines the key parameters for bank collapse prediction, and studies the failure modes and bank collapse mechanisms. It also proposes the finite element method of bank collapse to predict the width and elevation of bank collapse and provides the influence on the surrounding environment. The results show that the collapsed bank on the left bank of Badi Township is a high and steep soil-like slope, and forms the collapse and retreat type of failure mode after impoundment. The Kachukin method, the bank slope structure method, and the proposed finite element method are used to predict the width and elevation of the collapsed bank. The results indicate that the Kachujin method predicts a larger range of bank collapses and is biased towards safety. In contrast, the prediction ranges of the bank slope structure method and the finite element method are close. The bank collapse position is located in the middle and rear of the residential houses in Badi Township, which is consistent with the on-site investigation and has strong reliability. The predicted width of the bank collapse is about 34m and the elevation is about 1845m. The research results can be directly applied to preventing and controlling bank collapse and have powerful practical application value.

    Keywords: Reservoir bank collapse, Soil slope, Impoundment process, Retreat type bank collapse, Prediction method of bank collapse

    Received: 25 Sep 2024; Accepted: 14 Oct 2024.

    Copyright: © 2024 An, Guo, Ju, Bai, Hu, Wang and Hu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Shuangfeng Guo, Nanjing Tech University, Nanjing, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.