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Risk assessment of roof water disaster due to multi-seam mining at Wulunshan Coal Mine in China

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Abstract

In the case of multi-seam coal mining, the earlier mined coal seam affects the engineering geological conditions of the subsequently mined coal seam, which increases the risk of mine water inrush during the subsequent coal seam mining. Previously developed evaluation methods are incapable for the risk assessment of roof water disaster due to multi-seam coal mining. Taking the first mining area of Wulunshan Coal Mine in Guizhou Province, China, as the study area, and based on the deformation and failure characteristics of the overlying strata in the coal seam during mining, an engineering geological model has been developed. There are eight controlling factors in the model, which can be used to evaluate the roof water disaster in multi-seam mining. Applying the fractal theory to quantify the geological structure, and using the AHP-EM method to determine the weights of the multiple factors, a model for the prediction and evaluation of the risk of water inrush from roof in multi-seam coal mining has been developed. A new method for the prediction and evaluation of water disaster in multi-seam coal mining has also been developed, and the risk of water inrush in the first mining area has been evaluated. The 1601 # coalface and 1603 # coalface of Wulunshan Coal Mine have been selected as the verification areas, and the results calculated by the new method have been verified as accurate and reasonable. The method can therefore provide the basis and guidance for the prevention of roof water disaster in multi-seam coal mining.

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Data availability

Availability of data and materials The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors thank the reviewers for their helpful comments.

Funding

The research was supported by the Fundamental Research Funds of the National Natural Science of China (Grant 41772302), and the Priority Academic Program Development of Jiangsu Higher Education Institutions. This work was also supported by the Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant KYCX21_2323).

Author information

Authors and Affiliations

  1. School of Resources and Geosciences, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu, 221116, People’s Republic of China

    Xianggang Cheng, Wei Qiao & Zequan Yu

  2. Institute of Mine Water Hazards Prevention and Controlling Technology, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu, 221116, People’s Republic of China

    Wei Qiao

  3. Center of Geothermal Resources Research, China University of Mining and Technology, 1 Daxue Road, Xuzhou, Jiangsu, 221116, People’s Republic of China

    Wei Qiao

  4. Beijing Exploration Resources Technology Co., 1002 C# Yingkunshiji, Science Park, Fengtai, Beijing, 100166, People’s Republic of China

    Guofa Li

  5. Shandong Energy Group South America Co. Ltd, No.888 Changbaishan Road, Qingdao, Shandong, 266500, People’s Republic of China

    Guofa Li

Authors
  1. Xianggang Cheng
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  2. Wei Qiao
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  3. Guofa Li
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  4. Zequan Yu
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Contributions

Xianggang Cheng performed implementation and organized the field test, and wrote the manuscript. Wei Qiao participated in drafting the manuscript and revised the manuscript. Guofa Li and Zequan Yu collected and analyzed the data.

Corresponding authors

Correspondence to Xianggang Cheng or Wei Qiao.

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Competing interests

The authors declare no competing interests.

Additional information

Responsible Editor: Murat Karakus

Highlights

• The manuscript promoted a new method for the prediction and evaluation of water disaster in multi-seam coal mining, which can provide the basis and guidance for the prevention of roof water disaster in multi-seam coal mining.

• An engineering geological model has been developed by on the deformation and failure characteristics of the overlying strata in the coal seam during mining, and some controlling factors were put forward to evaluate the roof water disaster in multi-seam mining.

• Applying the fractal theory to quantify the geological structure at Wulunshan Coal Mine.

• The 1601 # coalface and 1603 # coalface of Wulunshan Coal Mine have been selected as the verification areas, and the results calculated by the method have been verified as accurate and reasonable.

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Cheng, X., Qiao, W., Li, G. et al. Risk assessment of roof water disaster due to multi-seam mining at Wulunshan Coal Mine in China. Arab J Geosci 14, 1116 (2021). https://doi.org/10.1007/s12517-021-07491-8

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  • DOI: https://doi.org/10.1007/s12517-021-07491-8

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