Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model

LI Zhiguo; XU Tao; LIU Yongjie; ZHAO Lichun; XU Yongchao; YANG Tianhong; ZHENG Xiaobin

doi:10.16031/j.cnki.issn.1003-8035.202207001

2024 Vol. 35, No. 1

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Article navigation > The Chinese Journal of Geological Hazard and Control > 2024 > 35(1): 116-123

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LI Zhiguo, XU Tao, LIU Yongjie, ZHAO Lichun, XU Yongchao, YANG Tianhong, ZHENG Xiaobin. Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model[J]. The Chinese Journal of Geological Hazard and Control, 2024, 35(1): 116-123. doi: 10.16031/j.cnki.issn.1003-8035.202207001

Citation:

LI Zhiguo, XU Tao, LIU Yongjie, ZHAO Lichun, XU Yongchao, YANG Tianhong, ZHENG Xiaobin. Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model[J]. The Chinese Journal of Geological Hazard and Control, 2024, 35(1): 116-123. doi: 10.16031/j.cnki.issn.1003-8035.202207001

Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model

1.
Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang, Liaoning　110819, China
2.
Tongliao Branch, State Power Investment Corporation Inner Mongolia Energy Co. Ltd., Tongliao, Inner Mongolia　029200 , China
3.
Zhalute Banner Zhahanao’er Coal Industry Co. Ltd., Tongliao, Inner Mongolia　029100, China

More Information

Corresponding author: XU Tao, xutao@mail.neu.edu.cn

Received Date: 04 July 2022

Revised Date: 28 August 2023

Accepted Date: 10 October 2023

Publish Date: 25 February 2024

Abstract

Abstract

The bench slope within an open-pit coal mine plays an important supporting role for coal resource production and transportation. The stability evaluation of the slope is of great significance in guiding continuous mining operations within the mine. This study leverages monitoring data and geological surveys of the slope, employing the analytic hierarchy process (AHP) to assign weights to slope stability analysis factors. Additionally, it employs the principle of maximum membership degree, taking into account various parameters such as slope geometry, geological data, meteorological and hydrological information, and field monitoring data. This paper establishes an analytic hierarchy process - fuzzy comprehensive evaluation model for slope stability assessment. Subsequently, the model is applied to analyze the stability of the north slope at the Zhahanao’er open-pit coal mine. The research indicates that, accordingly to the established slope analytic hierarchy process - fuzzy comprehensive evaluation model, the northern slope is deemed to be fundamentally stable. The numerical simulated FOS (factor of safety) of 1.121 aligns remarkably well with model results. It is comprehensive and accurate since the model can fully consider the contribution of multiple information to the stability of slope.
- open-pit slope /
- monitoring data /
- fuzzy comprehensive evaluation /
- slope stability /
- numerical simulation

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References

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