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Comprehensive Water Inrush Risk Assessment Method for Coal Seam Roof

Author

Listed:
  • Zhenming Sun

    (School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China)

  • Wenpeng Bao

    (School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China)

  • Mei Li

    (Institute of Remote Sensing and Geographical Information System, Peking University, Beijing 100871, China)

Abstract

In order to prevent coal mine water inrush accidents, it is necessary to appropriately assess the water abundance of coal mines based on drilling and geophysical data. This paper studied a comprehensive risk assessment method of water inrush. First, a water inrush risk index was proposed based on the analytic hierarchy process-entropy method (AHP-EM) and the water-rich structure index was proposed based on the geological data coupled calculation, then weighted two indices above which established the comprehensive water inrush risk assessment method. Secondly, eight factors were chosen as risk control factors of water inrush: core recovery, aquifer thickness, distance from the indirect aquifer to the coal seam, aquiclude thickness, height of water-conducting fracture zone, sand-mud ratio, total layers of aquifer and aquiclude, and the equivalent thickness of sandstone. Finally, the No. 2 coal seam of Dahaize coal mine was taken as the research object, the factors were calculated, and a comprehensive water inrush assessment model was constructed. With site investigation and observation, the water inrush risk assessment model of the No.2 coal seam roof is consistent with the actual mining situation, which verifies the validity of the model. In addition, this method was used to evaluate the water-richness of the weathered bedrock fractured aquifer in the Zhangjiamao coal mine. The practical application of the two mines has verified the generality of the approach. The research could provide scientific assistance for mine water hazard mitigation and mining safety.

Suggested Citation

  • Zhenming Sun & Wenpeng Bao & Mei Li, 2022. "Comprehensive Water Inrush Risk Assessment Method for Coal Seam Roof," Sustainability, MDPI, vol. 14(17), pages 1-17, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:17:p:10475-:d:895540
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    References listed on IDEAS

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    1. Xinxin Zhou & Zhenhua Ouyang & Ranran Zhou & Zhenxing Ji & Haiyang Yi & Zhongyi Tang & Bo Chang & Chengcheng Yang & Bingcheng Sun, 2021. "An Approach to Dynamic Disaster Prevention in Strong Rock Burst Coal Seam under Multi-Aquifers: A Case Study of Tingnan Coal Mine," Energies, MDPI, vol. 14(21), pages 1-15, November.
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    Citations

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    Cited by:

    1. Tao Yan & Chuanqu Zhu & Qingfeng Li & Qian Xu, 2023. "Investigating Disaster Mechanisms Triggered by Abrupt Overburden Fracture Alterations in Close-Seam Mining Beneath an Exceptionally Thick Sandstone Aquifer," Sustainability, MDPI, vol. 15(18), pages 1-15, September.
    2. Xiuchang Shi & Guangluo Lyu, 2023. "Mechanism of Bed Separation Water Inrush during the Mining of Extra-Thick Coal Seam under Super-Thick Sandstone Aquifer," Sustainability, MDPI, vol. 15(13), pages 1-17, July.
    3. Baoxin Zhao & Qimeng Liu & Jingzhong Zhu, 2023. "Risk Assessment and Zonation of Roof Water Inrush Based on the Analytic Hierarchy Process, Principle Component Analysis, and Improved Game Theory (AHP–PCA–IGT) Method," Sustainability, MDPI, vol. 15(14), pages 1-17, July.

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