Geotechnical and Geological Engineering

, Volume 36, Issue 2, pp 1161–1173 | Cite as

Study on Coupling Support Technique in the Roadway of Hecaogou No. 2 Coal Mine with Soft Roadway of Large Deformation

  • Pengfei GuoEmail author
  • Manchao He
  • Jiong Wang
Original paper


Through the study of failure mechanisms in soft roadways accompanying by large deformation, their failures are mainly induced by the uncoupling between mechanism of support and rock as well as their strength and rigidity. The deformation starts from key parts and later leads to unstability of the entire support system. Therefore, coupling surrounding rocks and corresponding support is indispensable in terms of the stability in soft roadways. It can be found from a great deal of research and engineering practice that coupling in rigidity between bolts and surrounding rock is able to reinforce rocks to the greatest extent. Coupling in strength, however, is more likely to make its stress field and displacement field evenly distribute. Also, when it comes to coupling in structure, the strength of the surrounding rock can be fully utilized to support roadways. On the basis of engineering surveys and corresponding rock mineral analysis in Hecaogou no. 2 coal mine, it can be found that the major factors causing great deformation in soft roadways are high degree of weathering, quality of surrounding rocks, water penetration and improper support scheme. The surrounding rock is categorized as jointed expandable composite soft rock. And later its deformation mechanism is determined as I AC II BC III CEA, which promotes the new design of net-anchor coupling support for roadway repair.


Deformation mechanism Net-anchor coupling support Instability roadway Key technology of soft rock roadway 



The authors wish to acknowledge the funding support from Fund Project: Project supported by the National Key Research Development Program (Grant No. 2016YFC0600900) and the National Natural Science Foundation of China (Grant No. 41602308).


  1. Bai J, Chaojiong H (2006) Deep roadway principle and application. Control China Univ Min Technol 35(2):145–148Google Scholar
  2. Bai J, Chaojiong H, Du M (2001) Research on bolt support technology in Roadway with extremely soft roof in composite roof. Rock Mech Eng 20(1):53–56Google Scholar
  3. Bai J, Wang X, Yao Z (2007) Study of coupling support in soft rock roadway under high stress. J China Univ Min Technol 36(4):422–425Google Scholar
  4. He M (2005) System concept and engineering evaluation of deep. Rock Mech Eng 24(16):2854–2858Google Scholar
  5. He L (2006) Deep three soft seam roadway control technology and engineering practice. Hunan Univ Sci Technol (Nat Sci) 21(3):9–12Google Scholar
  6. He M, Sun X (2004) Chinese coal mine soft rock roadway supporting design and construction guidelines. Science Press, Beijing, pp 52–60Google Scholar
  7. He M, King HR, Sun X (2004) Soft rock engineering mechanics. Science Press, Beijing, pp 94–100Google Scholar
  8. He M, Xie Heping H, Peng SP et al (2005) Study on rock mechanics in deep mining engineering. Rock Mech Eng 24(16):2803–2813Google Scholar
  9. He M, Qi G, Cheng P et al (2007) Deformation and damage mechanisms and coupling support design in deep coal roadway with compound roof. Rock Mech Eng 26(5):987–993Google Scholar
  10. Kang H (2013) In-situ test of coal rock mass and application in the control of surrounding rock. Science Press, BeijingGoogle Scholar
  11. Liu H, Wu rights law, science and other by Lee (2006) Analysis of roof stability characteristics of main coal seam in Yanzhou coalfield. Rock Mech Eng 25(7):1450–1456Google Scholar
  12. Meng Q, Han L, Qiao W et al (2016) Supporting effect and application of bolt-net-anchor coupling support under extremely weak cementation formation. J Min Saf Eng 33(5):770–778Google Scholar
  13. Meng Q, Han L, Zhang F et al (2017) Coupling support effect on high-stress deep soft rock roadway and its application. Rock Soil Mech 38(5):1–14Google Scholar
  14. Niu S, Jing H, Zhang Z et al (2011) Study on control technology of surrounding rocks in deep soft roadway and its application. J China Coal Soc 36(6):914–919Google Scholar
  15. Qi G, Li Z, Guo Z (2011) Coupling support design for deep pit bottom in No. 5 coal mine of Hebi industry group and its application. J Min Saf Eng 28(4):553–559Google Scholar
  16. Sun X, He M (2005) Numerical simulation of deep soft rock roadway coupling support research. China Univ Min Technol 34(2):166–169Google Scholar
  17. Wang W, Peng G, Huang J (2011) Research on high-strength coupling support technology of high stress extremely soft rock roadway. J China Coal Soc 36(2):223–228Google Scholar
  18. Zhang F (2014) Study on deformation characteristics and coupled control technology of compound surrounding rock of deep roadway. China University of Mining & Technology, XuzhouGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.School of Civil Engineering of Shaoxing UniversityShaoxingChina
  2. 2.State Key Laboratory for GeoMechanics and Deep Underground EngineeringChina University of Mining and TechnologyBeijingChina
  3. 3.Institute of Mechanics and Architectural EngineeringChina University of Mining and TechnologyBeijingChina

Personalised recommendations