Geotechnical and Geological Engineering

, Volume 37, Issue 1, pp 95–105 | Cite as

Numerical Survey on the Destabilization Mechanism of Weakly Cemented Soft Rock Roadway Considering Interlayer Effect

  • Qing Ma
  • Zeng-hui ZhaoEmail author
  • Xiao-jie Gao
  • Shao-jie Chen
  • Yun-liang Tan
Original Paper


One of the major challenges facing coal mines in western China is occurrence of large deformation and hanging roof falls when roadway contains weak interlayer. To determine the effect of the thickness, stiffness and strength of the weak mudstone interlayer on the deformation of the weakly cemented soft rock roadway, two numerical models were built aiming to clarify the mechanism of roof fall and large deformation in Hongqingliang coal mine, China. The results show that the thickness and stiffness of the weak mudstone interlayer have a great influence on the subsidence of the roof. With the increase of the thickness of the weak mudstone interlayer or the decrease of stiffness, the subsidence of the roof increases obviously, but the strength of the weak mudstone interlayer has little effect on the deformation of the roof. The results can be used as a reference for the study of deformation and destabilization of surrounding rock in weakly cemented soft rock roadway with weak mudstone interlayer.


Weakly cemented soft rock Mudstone interlayer Roadway Deformation 



This work is supported by the National Natural Science Foundation of China (Grant Nos. 51774196, 51774194, 51474137 and 51578327), China Postdoctoral Science Foundation (No. 2016M592221), SDUST Young Teachers Teaching Talent Training Plan (BJRC20160501), and SDUST Graduate Student Technology Innovation Project (No. SDKDYC180203). The above financial support is gratefully acknowledged.


  1. Dai ZY, Tang JX, Jiang J et al (2016) Similarity modeling on destabilization and failure of rock bedding slope with weak interlayer caused by underground mining. J China Coal Soc 41(11):2714–2720Google Scholar
  2. Fan LM, Yan N, Li N (2006) Dynamic response model for thin soft interlayer considering interbedded reflecting waves. Chin J Rock Mech Eng 25(1):88–92Google Scholar
  3. Huang F, Zhu HH, Xu QW (2016) Model test and analysis about loose failure of tunnel surrounding rock mass containing weak interlayer. Chin J Rock Mech Eng (s1):2915–2924Google Scholar
  4. Li GC (2008) Study on stability and safety control of roadway surrounding rock in weak interlayer roof. China University of Mining and Technology, BeijingGoogle Scholar
  5. Li XW, Sun LH, Yang BS et al (2017) Simulation of the influence of thickness of the weak interlayer on the floor heave of the roadway. J Min Saf Eng 34(3):504–510Google Scholar
  6. Liu XX, Zhao Y, Zhang P et al (2017) Analysis of influencing factors of rock slope stability in weak interlayer of carbonaceous mudstone. J Hunan Univ Arts Sci Nat Sci Ed 29(1):65–69Google Scholar
  7. Shan RL, Dong HG, Chen DK (2014) Numerical analysis of destabilization soil-nailing wall in deep foundation pits containing soft soil layer at middle and deep parts. Chin J Geotech Eng 36(s2):30–35Google Scholar
  8. Tang LZ, Gao LH, Chun W et al (2016) Numerical analysis of stability of roadway surrounding rock with weak interlayer under dynamic disturbance. J Min Saf Eng 33(1):63–69Google Scholar
  9. Wang L, Li ZY (2016) Triaxial test analysis of weakly cemented mudstone in west China. J Yangtze River Sci Res Inst 33(8):86–90Google Scholar
  10. Wang WM, Zhao ZH, Lei W (2012) Safety analysis for soft rock tunnel floor destruction based on different yield criterions. Chin J Rock Mech Eng 31:3920–3927Google Scholar
  11. Wang WM, Zhao ZH, Lei W (2013) Elastic–plastic damage analysis for weakly consolidated surrounding rock regarding stiffness and strength cracking. J Min Saf Eng 30(5):679–685Google Scholar
  12. Xu BT, Yan CH, Chen HY et al (2008) Experimental study of mechanical property of weak intercalated layers in slope rock mass. Rock Soil Mech 29(11):3077–3081Google Scholar
  13. Xu BT, Qian QH, Yan CH et al (2009) Stability and strengthening analyses of slope rock mass containing multi-weak interlayers. Chin J Rock Mech Eng 28:3959–3964Google Scholar
  14. Zhang XP, Wu SC, Zhang ZZ et al (2008) Numerical simulation and analysis of failure process of soil with weak intercalated layer. Rock Soil Mech 29(5):1200–1204Google Scholar
  15. Zhang ZQ, Li N, Chen FF et al (2011) Effect of weak interbed on tunnel stability in different graded surrounding rock mass. J Northwest A&F Univ 39(7):193–200Google Scholar
  16. Zhang SR, Tan YS, Wang C et al (2014) Research on deformation failure mechanism and stability of slope rock mass containing multi-weak interlayers. Rock Soil Mech 35(6):1695–1702Google Scholar
  17. Zhao ZH, Wang WM, Yan JX (2014a) The influence of parameters on the stability of a coal roadway in weakly cemented soft rock and stability failure features. Mod Tunn Technol 51(3):144–151Google Scholar
  18. Zhao ZH, Wang WM, Gao X (2014b) Evolution laws of strength parameters of soft rock at the post-peak considering stiffness degradation. J Zhejiang Univ vol Engl 15(4):282–290CrossRefGoogle Scholar
  19. Zhao ZH, Wang WM, Wang L et al (2015) Compression–shear strength criterion of coal–rock combination model considering interface effect. Tunn Undergr Space Technol Inc Trenchless Technol Res 47:193–199CrossRefGoogle Scholar
  20. Zhao ZH, Wang WM, Tan YL et al (2016a) Quantitative model of full section anchoring in thick soft rock tunnel. J China Coal Soc 41(7):1643–1650Google Scholar
  21. Zhao ZH, Lv XZ, Wang WM et al (2016b) Damage evolution of bi-body model composed of weakly cemented soft rock and coal considering different interface effect. Springerplus 5(1):292CrossRefGoogle Scholar
  22. Zhou Y, Zhang KK (2017) Numerical simulation analysis of influence of soft interlayer on horizontal displacement of deep foundation pit. J Archit Civil Eng 34(3):9–15Google Scholar
  23. Zhou F, Xu Q, Liu HX et al (2016) An experimental study of dynamic response characteristics of slope with horizontal weak interlayer under earthquake. Rock Soil Mech 37(1):133–139Google Scholar
  24. Zhu WS, Zhao CL, Zhou H et al (2015) Some consideration and recognition on several key issues of present study of rock mechanics. Chin J Rock Mech Eng 34(4):649–658CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Qing Ma
    • 1
  • Zeng-hui Zhao
    • 1
    Email author
  • Xiao-jie Gao
    • 1
  • Shao-jie Chen
    • 1
  • Yun-liang Tan
    • 1
  1. 1.State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and TechnologyQingdaoChina

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