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Journal of Failure Analysis and Prevention

, Volume 18, Issue 1, pp 41–49 | Cite as

Simulation of Sidewall Failure in Coal Mine Roadways Using an Extended Continuous Joint Model

  • Xian-Jie Hao
  • Yi-Xin Zhao
  • Yu-Lin Li
  • Yan-Ding Guo
  • Bo Ren
Technical Article---Peer-Reviewed
  • 114 Downloads

Abstract

Coal is well developed with beddings, and the beddings play an important role in the stability of tunnel stability of coal mine. This study focused on jointed rock mass with two sets of joint and proposed an extended ubiquitous model and associated numerical implementation accounting for joint spacing to represent geometric features of coal. The failure criteria of two sets of joint proposed in this paper not only accounted for joint spacing, but also contained the ubiquitous joint model. This extended theory was validated against the discontinuous deformation analysis method, the plane of weakness theory and experimental results for jointed coal with different joint fabric. The model is also used to analyze tunnel stability of roadways in coal mine with different joint spacing. The ubiquitous joint model could simulate jointed coal with small joint spacing, but for that with larger joint spacing, the ubiquitous joint model is not applicable and the joint model containing joint spacing proposed by this paper should be used. A series of comparisons demonstrated that the proposed model was capable of considering the influence of joint spacing on jointed coal tunnel with two sets of joint.

Keywords

Coal mine Joint spacing Ubiquitous joint model Jointed coal tunnel Tunnel stability 

Notes

Acknowledgments

Supported by Beijing Natural Science Foundation (8174072), funded by the Open Projects of Research Center of Coal Resources Safe Mining and Clean Utilization, Liaoning (LNTU16KF08) and that from State Key Laboratory of Coal Resources and Safe Mining (China University of Mining and Technology) under Grant Nos. SKLCRSM16DCB01 and SKLCRSM16KFB07, Financial support from the National Natural Science Foundation of China under Grant No. 41272347, are gratefully acknowledged.

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Copyright information

© ASM International 2017

Authors and Affiliations

  • Xian-Jie Hao
    • 1
    • 2
    • 3
  • Yi-Xin Zhao
    • 3
  • Yu-Lin Li
    • 3
  • Yan-Ding Guo
    • 3
  • Bo Ren
    • 4
  1. 1.State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyBeijingPeople’s Republic of China
  2. 2.Research Centre of Coal Resources Safe Mining and Clean UtilizationLiaoning Technical UniversityLiaoningPeople’s Republic of China
  3. 3.College of Resources and Safety EngineeringChina University of Mining and TechnologyBeijingPeople’s Republic of China
  4. 4.State Coal Mining National Engineering Technology Research InstituteAnhuiPeople’s Republic of China

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