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Environmental characteristics and unified failure mode classification system for mining landslides in the karst mountainous areas of southwestern China

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Abstract

The karst mountainous areas of southwestern China are widely distributed and affluent in mineral resources. However, mining activities induced numerous large-scale landslides in this area, resulting in tremendous loss of lives and property to residents. As a result, it is crucial to figure out the triggering mechanism and failure modes of mining landslides for landslide prevention. In this paper, the environment characteristics and triggering mechanism of mining landslides in karst mountainous areas of southwestern China were analyzed by investigating a few mining landslides. Specifically, it can be attributed to the natural environment and human activities, which are topography, lithology, geological structure, karst hydrogeology, rainfall, and mining activities. On the other hand, a unified failure mode classification system for mining landslides in karst mountainous areas of Southwest China was established based on the international landslide classification system and different slope structures (subhorizontal bedding layered slope, bedding layered slope, anti-dip layered slope, lateral layered slope, oblique inclined bedding layered slope). In this classification system, the basic failure modes were analyzed in detail, and the mining impact mechanisms for each failure mode were revealed. The corresponding mechanical models and stability criteria for mining-induced flexural topple and planar slide were summarized. This study not only identifies and rapidly classifies mining landslides in the karst mountainous areas of southwestern China, but also further facilitates the prediction and evaluation of the stability of mining-induced unstable rock masses.

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Acknowledgements

This research was financially supported by the National Natural Science Foundation of China (no. 52074042) and the National Key R&D Program of China (no. 2018YFC1504802). The authors are sincerely thankful to Profs. Bin Li, Zhongping Yang, FangPeng Cui and Dr. Fei Xiong for their great support to this study.

Funding

This work was supported by the National Natural Science Foundation of China (no. 52074042) and National Key R&D Program of China (no. 2018YFC1504802).

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All authors contributed to the study conception and design. ZZ had the initial idea for the manuscript, YX performed the literature search and data analysis, ZZ and YX drafted the manuscript and revised most of the manuscript according to reviewers’ comments, NW put forward detailed modification ideas, crucial for the revised manuscript and drew some modified figures, and XL and GG commented on previous versions of the manuscript and provided some modification suggestions.

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Correspondence to Zuliang Zhong.

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Zhong, Z., Xu, Y., Wang, N. et al. Environmental characteristics and unified failure mode classification system for mining landslides in the karst mountainous areas of southwestern China. Carbonates Evaporites 38, 2 (2023). https://doi.org/10.1007/s13146-022-00818-w

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