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Calculation of the Height of the Water-Conducting Fracture Zone Based on the Analysis of Critical Fracturing of Overlying Strata

Author

Listed:
  • Yi Tan

    (School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
    State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China
    State Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Hao Cheng

    (School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
    State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China)

  • Wenyu Lv

    (State Key Laboratory of Coal Resources in Western China, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Weitao Yan

    (State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China)

  • Wenbing Guo

    (School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
    State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China)

  • Yujiang Zhang

    (College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Tingye Qi

    (College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Dawei Yin

    (College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266000, China)

  • Sijiang Wei

    (School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
    State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China)

  • Jianji Ren

    (State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454000, China)

  • Yajun Xin

    (School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

Abstract

Accurate division of the water-conducting fracturing zone (WCFZ) in the mining overburden serves as an important basis to evaluate the stability of coal mining under water bodies. Research on the WCFZ is conducive to controlling surface subsidence and realizing safe coal mining under water. Traditionally, the WCFZ is generally determined by field observation (liquid leakage method, borehole television, etc.) or empirical formula. Although these methods boast high accuracy, they are time-consuming and laborious and have some problems such as weak pertinence and a large value range. In this study, a mechanical model under the critical breakage condition of hard and soft strata was established on the basis of the specific geological and mining information of a mine. Besides, the stability condition for the broken strata to form the “masonry beam” structure and the deflection-based bending deformation formula of hard and soft strata were deduced, and the method of calculating the height of WCFZ based on the analysis of critical fracturing of soft and hard strata (hereafter referred to as the CFSHS-based height calculation method) was proposed. Furthermore, with reference to the results of specific engineering tests, the height of the WCFZ in the working face 15,101 of coal mine XJ was analyzed by means of theoretical analysis, numerical simulation and engineering verification, which verifies the rationality and practicability of the CFSHS-based height calculation method.

Suggested Citation

  • Yi Tan & Hao Cheng & Wenyu Lv & Weitao Yan & Wenbing Guo & Yujiang Zhang & Tingye Qi & Dawei Yin & Sijiang Wei & Jianji Ren & Yajun Xin, 2022. "Calculation of the Height of the Water-Conducting Fracture Zone Based on the Analysis of Critical Fracturing of Overlying Strata," Sustainability, MDPI, vol. 14(9), pages 1-17, April.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5221-:d:802383
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    References listed on IDEAS

    as
    1. Wen Zhai & Wei Li & Yanli Huang & Shenyang Ouyang & Kun Ma & Junmeng Li & Huadong Gao & Peng Zhang, 2020. "A Case Study of the Water Abundance Evaluation of Roof Aquifer Based on the Development Height of Water-Conducting Fracture Zone," Energies, MDPI, vol. 13(16), pages 1-16, August.
    2. Changfang Guo & Zhen Yang & Shen Li & Jinfu Lou, 2020. "Predicting the Water-Conducting Fracture Zone (WCFZ) Height Using an MPGA-SVR Approach," Sustainability, MDPI, vol. 12(5), pages 1-15, February.
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    Cited by:

    1. Liyang Bai & Changlong Liao & Changxiang Wang & Meng Zhang & Fanbao Meng & Mingjin Fan & Baoliang Zhang, 2022. "Study on Height Prediction of Water Flowing Fractured Zone in Deep Mines Based on Weka Platform," Sustainability, MDPI, vol. 15(1), pages 1-15, December.

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