Volume 16 Issue 3
Sep.  2023
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Huan-ling Wang, Xu-fei Zhao, Hong-jie Chen, Kui Yi, Wei-chau Xie, Wei-ya Xu. 2023: Evaluation of toppling rock slopes using a composite cloud model with DEMATELeCRITIC method. Water Science and Engineering, 16(3): 280-288. doi: 10.1016/j.wse.2023.04.002
Citation: Huan-ling Wang, Xu-fei Zhao, Hong-jie Chen, Kui Yi, Wei-chau Xie, Wei-ya Xu. 2023: Evaluation of toppling rock slopes using a composite cloud model with DEMATELeCRITIC method. Water Science and Engineering, 16(3): 280-288. doi: 10.1016/j.wse.2023.04.002

Evaluation of toppling rock slopes using a composite cloud model with DEMATELeCRITIC method

doi: 10.1016/j.wse.2023.04.002

This work was supported by the Natural Science Foundation of China (Grant No. 51939004), the Fundamental Research Funds for the Central Universities (Grant No. B210204009), and the China Huaneng Group Science and Technology Project (Grant No. HNKJ18-H24).

  • Received Date: 2021-12-20
  • Accepted Date: 2023-04-05
  • Rev Recd Date: 2023-01-24
  • Safety evaluation of toppling rock slopes developing in reservoir areas is crucial. To reduce the uncertainty of safety evaluation, this study developed a composite cloud model, which improved the combination weights of the decision-making trial and evaluation laboratory (DEMATEL) and criteria importance through intercriteria correlation (CRITIC) methods. A safety evaluation system was developed according to in situ monitoring data. The backward cloud generator was used to calculate the numerical characteristics of a cloud model of quantitative indices, and different virtual clouds were used to synthesize some clouds into a generalized one. The synthesized numerical characteristics were calculated to comprehensively evaluate the safety of toppling rock slopes. A case study of a toppling rock slope near the Huangdeng Hydropower Station in China was conducted using monitoring data collected since operation of the hydropower project began. The results indicated that the toppling rock slope was moderately safe with a low safety margin. The composite cloud model considers the fuzziness and randomness of safety evaluation and enables interchange between qualitative and quantitative knowledge. This study provides a new theoretical method for evaluating the safety of toppling rock slopes. It can aid in the predication, control, and even prevention of disasters.


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