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An Approach to Dynamic Disaster Prevention in Strong Rock Burst Coal Seam under Multi-Aquifers: A Case Study of Tingnan Coal Mine

Author

Listed:
  • Xinxin Zhou

    (North China Institute of Science and Technology, Langfang 065201, China)

  • Zhenhua Ouyang

    (North China Institute of Science and Technology, Langfang 065201, China)

  • Ranran Zhou

    (North China Institute of Science and Technology, Langfang 065201, China)

  • Zhenxing Ji

    (North China Institute of Science and Technology, Langfang 065201, China)

  • Haiyang Yi

    (North China Institute of Science and Technology, Langfang 065201, China)

  • Zhongyi Tang

    (Shaanxi Changwu Tingnan Coal Industry Co., Ltd., Xianyang 713602, China)

  • Bo Chang

    (Shenhua Xinjiang Energy Co., Ltd., Urumchi 830027, China)

  • Chengcheng Yang

    (Shaanxi Changwu Tingnan Coal Industry Co., Ltd., Xianyang 713602, China)

  • Bingcheng Sun

    (Shenhua Xinjiang Energy Co., Ltd., Urumchi 830027, China)

Abstract

In order to prevent the multi-dynamic disasters induced by rock burst and roof water inrush in strong rock burst coal seams under multi-aquifers, such as is the case with the 207 working face in the Tingnan coal mine considered in this study, the exhibited characteristics of two types of dynamic disasters, namely rock burst and water inrush, were analyzed. Based on the lithology and predicted caving height of the roof, the contradiction between rock burst and water inrush was analyzed. In light of these analyses, an integrated method, roof pre-splitting at a high position and shattering at a low position, was proposed. According to the results of numerical modelling, pre-crack blasting at higher rock layers enables a cantilever roof cave in time, thereby reducing the risk of rock burst, and pre-crack blasting at underlying rock layers helps increase the crushing degree of the rock, which is beneficial for decreasing the caving height of rock layers above goaf, thereby preventing the occurrence of water inrush. Finally, the proposed method was applied in an engineering case, and the effectiveness of this method for prevention and control of multi-dynamics disasters was evaluated by field observations of the caving height of rock layers and micro-seismic monitoring. As a result, the proposed method works well integrally to prevent and control rock burst and water inrush.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7287-:d:671628
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    Citations

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    Cited by:

    1. Dong Xu & Mingshi Gao & Xin Yu, 2022. "Dynamic Response Characteristics of Roadway Surrounding Rock and the Support System and Rock Burst Prevention Technology for Coal Mines," Energies, MDPI, vol. 15(22), pages 1-17, November.
    2. Yulong Chen & Junwen Zhang & Jianhang Chen & Xuejie Deng, 2022. "Special Issue: Rock Burst Disasters in Coal Mines," Energies, MDPI, vol. 15(13), pages 1-6, July.
    3. Pengpeng Wang & Yaodong Jiang & Qingshan Ren, 2022. "Roof Hydraulic Fracturing for Preventing Floor Water Inrush under Multi Aquifers and Mining Disturbance: A Case Study," Energies, MDPI, vol. 15(3), pages 1-22, February.
    4. Lele Xiao & Fan Li & Chao Niu & Gelian Dai & Qian Qiao & Chengsen Lin, 2022. "Evaluation of Water Inrush Hazard in Coal Seam Roof Based on the AHP-CRITIC Composite Weighted Method," Energies, MDPI, vol. 16(1), pages 1-20, December.
    5. 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.

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