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A Novel Caving Model of Overburden Strata Movement Induced by Coal Mining

Author

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  • Dongjing Xu

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, China
    100083, China)

  • Suping Peng

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, China
    100083, China)

  • Shiyao Xiang

    (100083, China)

  • Yunlan He

    (State Key Laboratory of Coal Resource and Safe Mining, China University of Mining & Technology, Beijing 100083, China)

Abstract

The broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production. To study the caving pattern of overlying strata and determine the calculation method of fracture pathway parameters due to roof caving induced by coal mining, the trapezoidal broken models were developed to explain and prevent water leakage, and even water inrush, during the mining process. By incorporating the variation of the volume expansion coefficient, a connection among the parameters of the fracture pathways and fracture angles, face width, and mining height could be established, which shows that the larger the degree of the fracture angle is, the smaller the value of the volume expansion coefficient and face width is with a relatively larger mining height. This relationship was also used to determine the eventual evolution configuration of the trapezoidal broken model. The presented approaches may help us to better understand the movement of overburden strata and provide an idea to help settle conflicts related to fracture space calculations induced by coal mining.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:4:p:476-:d:94766
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. 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).
    2. Qingxiang Huang & Yanpeng He & Jian Cao, 2019. "Experimental Investigation on Crack Development Characteristics in Shallow Coal Seam Mining in China," Energies, MDPI, vol. 12(7), pages 1-16, April.
    3. Weiyong Lu & Changchun He & Xin Zhang, 2020. "Height of overburden fracture based on key strata theory in longwall face," PLOS ONE, Public Library of Science, vol. 15(1), pages 1-15, January.
    4. Xueyi Yu & Chi Mu & Dongdong Zhang, 2020. "Assessment of Land Reclamation Benefits in Mining Areas Using Fuzzy Comprehensive Evaluation," Sustainability, MDPI, vol. 12(5), pages 1-20, March.
    5. Hengjie Luan & Yujing Jiang & Huili Lin & Guofeng Li, 2018. "Development of a New Gob-Side Entry-Retaining Approach and Its Application," Sustainability, MDPI, vol. 10(2), pages 1-15, February.
    6. 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.
    7. Erhu Bai & Wenbing Guo & Yi Tan & Mingjie Guo & Peng Wen & Zhiqiang Liu & Zhibao Ma & Weiqiang Yang, 2022. "Regional Division and Its Criteria of Mining Fractures Based on Overburden Critical Failure," Sustainability, MDPI, vol. 14(9), pages 1-15, April.

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