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Dynamic Stability Evaluation for High and Steep Slope of Open-Pit Mines Based on CRITIC - Extension Cloud Model
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Ying REN1, 2, Guozhuo SHEN1, 2, Liangxi ZHANG3, Guangming REN1, 2, Gang HAN3, Xinlong DAI3
Mining and Metallurgical Engineering | 2026, 46(1) : 23 - 29
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Mining and Metallurgical Engineering | 2026, 46(1): 23-29
• MINING •
Dynamic Stability Evaluation for High and Steep Slope of Open-Pit Mines Based on CRITIC - Extension Cloud Model
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Ying REN1, 2, Guozhuo SHEN1, 2, Liangxi ZHANG3, Guangming REN1, 2, Gang HAN3, Xinlong DAI3
Affiliations
  • 1.School of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China
  • 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, Sichuan, China
  • 3.The 4th Geologic Brigade of Sichuan, Chengdu 611100, Sichuan, China
doi: 10.3969/j.issn.0253-6099.2026.01.004
Outline
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The evaluation indices for open-pit mine slope stability are characterized by variability, randomness and fuzziness. To overcome the defects of traditional methods in open-pit mine slope stability evaluation, such as static index weights, insufficient correlation processing and poor handling of index differences, a multi-level and multi-variable dynamic evaluation model was constructed for open-pit slope stability by improving extension cloud model, replacing the standard deviation in the traditional CRITIC method with the coefficient of variation, revising the independence coefficient of evaluation indices, and introducing correlation matrix into dynamic weight calculation. Then, three high and steep slopes in an open-pit mine were evaluated using this model. The results show that the safety grade limit values of those three slope areas are 3.38, 3.23 and 3.37 respectively, with confidence factors all less than 0.05, thus being graded as Class III and considered to be basically stable. It is found that the evaluation results are basically consistent with those obtained by using rigid body limit equilibrium method, extenics theory and unascertained measure theory, which verifies the applicability and reliability of the proposed model.

open-pit mine  /  slope stability  /  correlation matrix  /  coefficient of variation  /  extension cloud  /  CRITIC  /  dynamic evaluation  /  safety class  /  extenics  /  cloud model  /  high and steep slope
任赢, 沈国卓, 张良喜, 任光明, 韩刚, 代鑫龙. 基于CRITIC法-可拓云模型的露天矿高陡边坡稳定性动态评价. 矿冶工程杂志, 2026 , 46 (1) : 23 -29 . DOI: 10.3969/j.issn.0253-6099.2026.01.004
Ying REN, Guozhuo SHEN, Liangxi ZHANG, Guangming REN, Gang HAN, Xinlong DAI. Dynamic Stability Evaluation for High and Steep Slope of Open-Pit Mines Based on CRITIC - Extension Cloud Model[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 23 -29 . DOI: 10.3969/j.issn.0253-6099.2026.01.004
Appendix
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Year 2026 volume 46 Issue 1
74
11
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.004
  • Receive Date：2025-09-15
  • Online Date：2026-10-08
Article Data
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  • Received：2025-09-15
Funding
Affiliations
    1.School of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China
    2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, Sichuan, China
    3.The 4th Geologic Brigade of Sichuan, Chengdu 611100, Sichuan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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