Stability Grade Evaluation of Slope with Soft Rock Formation in Open-Pit Mine Based on Modified Cloud Model

In recent years, the frequent occurrence of slope failures has brought the issue of slope problems to the forefront of widespread public concern, which significantly impedes progress toward the secure and sustainable development of open-pit mines. And, high and steep slopes of weak rock strata, bein...

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Veröffentlicht in:Sustainability 2024-06, Vol.16 (11), p.4706
Hauptverfasser: Wu, Gongyong, Nie, Xingxin, Zhang, Xin, Yang, Ming, Shi, Guangbin
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Zhang, Xin
Yang, Ming
Shi, Guangbin
description In recent years, the frequent occurrence of slope failures has brought the issue of slope problems to the forefront of widespread public concern, which significantly impedes progress toward the secure and sustainable development of open-pit mines. And, high and steep slopes of weak rock strata, being a more complex type of slope, pose a greater potential for danger. In order to ensure the reliability of the safety evaluation results of the high and steep open-pit slope containing soft rocks, an evaluation index system with quantized grade intervals was created based on the thought of an analytic hierarchy process, and the MATLAB R2021a was used to calculate the numerical characteristic values of the cloud model. Then, a standard stability cloud model based on cloud theory was established. With the opening pit mine as an example, its slope stability practice cloud image was generated and the similarity between this image and the grades of the cloud model was calculated through the ECM algorithm to effectively identify the stability and verify the scientificity and validity of the model. The results show that the similarity between the practice cloud image and the standard stability cloud image for the total evaluation of the stability of an open-pit mine is 0.021, 0.279, 0.594, and 0.106, respectively. The slope stability is at grade C, which is basically consistent with the numerical simulation and the analysis results of the traditional limit equilibrium method, verifying that the model is scientific and effective to a certain extent. The method provides substantial guidance to ensure production safety in this specific open-pit mine. It provides ideas and means for other similar complex slope stability analysis and prevention. Meanwhile, it promotes the safe and sustainable development of open-pit mines.
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And, high and steep slopes of weak rock strata, being a more complex type of slope, pose a greater potential for danger. In order to ensure the reliability of the safety evaluation results of the high and steep open-pit slope containing soft rocks, an evaluation index system with quantized grade intervals was created based on the thought of an analytic hierarchy process, and the MATLAB R2021a was used to calculate the numerical characteristic values of the cloud model. Then, a standard stability cloud model based on cloud theory was established. With the opening pit mine as an example, its slope stability practice cloud image was generated and the similarity between this image and the grades of the cloud model was calculated through the ECM algorithm to effectively identify the stability and verify the scientificity and validity of the model. The results show that the similarity between the practice cloud image and the standard stability cloud image for the total evaluation of the stability of an open-pit mine is 0.021, 0.279, 0.594, and 0.106, respectively. The slope stability is at grade C, which is basically consistent with the numerical simulation and the analysis results of the traditional limit equilibrium method, verifying that the model is scientific and effective to a certain extent. The method provides substantial guidance to ensure production safety in this specific open-pit mine. It provides ideas and means for other similar complex slope stability analysis and prevention. 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subjects Analysis
Coal mining
Engineering
Fatalities
Geology
Hydrology
Methods
Mines
Mutation
Numerical analysis
Rain
Simulation methods
title Stability Grade Evaluation of Slope with Soft Rock Formation in Open-Pit Mine Based on Modified Cloud Model
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