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Trapezoidal collapse model to calculate the height of the overburden collapse zone in coal seam mining: An example from Guo'Jiahe Coal Mine, Western China

Author

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  • Liu, Tianhao
  • Xu, Dongjing
  • Shi, Longqing
  • Qu, Linyan
  • Ji, Kaiming

Abstract

In view of the fact that water inrush often occurs from head-on roof of working face, on the identical time, sand-burst and mud-burst accidents even occur in the process of mining the Jurassic Coal Seam, which is formed in one of the three main coal forming periods in China. Guided by the practical theory of mine pressure control, taking the two disastrous water inrush accidents that occurred head-on in 1309 working face of Guojiahe Coal Industry Co., Ltd. as an example, the mechanisms of head-on water inrush in the working face are respectively revealed for fracture line type, i. e. Then deduced the roof overburden collapse zone's evolution law because of coal seam mining and the stress state of the roof settlement process. A trapezoidal collapse model was proposed to evolve the overburden collapse zone after coal mining to describe the overburden collapse and fissures' evolution and calculate the collapse zone's height. The model accuracy was verified using numerical simulation, 3D high-density electric prospecting and measured data of different coal mines.

Suggested Citation

  • Liu, Tianhao & Xu, Dongjing & Shi, Longqing & Qu, Linyan & Ji, Kaiming, 2022. "Trapezoidal collapse model to calculate the height of the overburden collapse zone in coal seam mining: An example from Guo'Jiahe Coal Mine, Western China," Energy, Elsevier, vol. 256(C).
    • Handle: RePEc:eee:energy:v:256:y:2022:i:c:s0360544222015122
    DOI: 10.1016/j.energy.2022.124609
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    References listed on IDEAS

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    1. Dongjing Xu & Suping Peng & Shiyao Xiang & Yunlan He, 2017. "A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining," Energies, MDPI, vol. 10(4), pages 1-13, April.
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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. Cheng, Ming & Fu, Xuehai & Chen, Zhaoying & Liu, Ting & Zhang, Miao & Kang, Junqiang, 2023. "A new approach to evaluate abandoned mine methane resources based on the zoning of the mining-disturbed strata," Energy, Elsevier, vol. 274(C).
    3. Dong, Fangying & Yin, Huiyong & Cheng, Wenju & Zhang, Chao & Zhang, Danyang & Ding, Haixiao & Lu, Chang & Wang, Yin, 2024. "Quantitative prediction model and prewarning system of water yield capacity (WYC) from coal seam roof based on deep learning and joint advanced detection," Energy, Elsevier, vol. 290(C).

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