Rock Mechanics and Rock Engineering

, Volume 52, Issue 11, pp 4605–4618 | Cite as

Experimental Investigation on Rockbolt Performance Under the Tension Load

  • Qiuhong Wu
  • Lu ChenEmail author
  • Baotang Shen
  • Bongani Dlamini
  • Shuqing Li
  • Yongjian Zhu
Original Paper


Rockbolt performance may vary differently under complex geological and stress conditions, especially dynamic disturbance at deep underground mining. Therefore, reinforcement mechanism needs to be further explored to improve the support effect of rockbolt. In this study, static and dynamic Brazilian splitting tests of steel bar reinforced red sandstones were carried out to investigate the rockbolt performance under tension load. The deformation changes on the specimen’s surface and the rockbolt were recorded during the test. The strengths and failure modes of unreinforced and reinforced Brazilian disc samples were investigated. The results show that the stress of bolt increases steadily during elastic deformation process, indicating that the bolt shares the tension loading, and increases sharply when the bear capacity of specimen descends caused by crack propagation, indicating that the load is transferred from sandstone specimen. Furthermore, most of the damaged reinforced samples were still bonded by rockbolt, when the test finished. Therefore, the reinforcement mechanism can be divided into two phases. The first phase is the intact rock stage, during which the bolt shares stress reinforcing the strength. The second phase is crack propagation stage, in which the bolt restricts the crack propagation and almost bears the load. Compared with the results of unreinforced samples, it can be seen that the bolt can reduce failure of rock and the strength of the reinforced samples is enhanced. The results may provide a reference for analysis of reinforced mechanism and design of rockbolts.


Rockbolt Brazilian splitting Dynamic load Split Hopkinson pressure bar Crack propagation 



Brazilian disc


Brazilian discs were loaded by static load


Brazilian discs were loaded by dynamic load


Reinforced specimens were loaded by static load


Reinforced specimens were loaded by dynamic load


Scanning electron microscope


Strain gages


Split Hopkinson pressure bar


The Young’s modulus of the pressure bars


The cross-sectional area of the bars


The diameter of specimen


The thickness of specimen

\(\varepsilon_{\text{I}} \left( t \right)\)

The strain signals of the incident wave

\(\varepsilon_{\text{R}} \left( t \right)\)

The strain signals of the reflected wave

\(\varepsilon_{\text{T}} \left( t \right)\)

The strain signals of the transmitted wave

\(\sigma \left( t \right)\)

The dynamic tensile strength



The research in this paper was supported by the National Natural Science Foundation of China (51774130), the National Basic Research Program of China (2015CB060200), the National Natural Science Foundation of China (51774131, 51674116). The authors are very grateful to the financial contributions and convey their appreciation for the support to this basic research. The authors also thank Dr. Jingyu Shi from CSIRO Energy for his help in polishing the wording and writing as well as the two anonymous reviewers for their comments that improved the manuscript.


  1. Amini M, Majdi A, Aydan O (2009) Stability analysis and the stabilisation of flexural toppling failure. Rock Mech Rock Eng 42:751–782Google Scholar
  2. Aydan O (2018) Rock reinforcement and rock support. CRC Press, LondonGoogle Scholar
  3. Aydan O, Kyoya T, Ichikawa Y, Kawamoto T (1987) Anchorage performance and reinforcement effect of fully grouted rockbolts on rock excavations. In: Proceedings of the 6th International Congress on Rock Mechanics, ISRM, Montreal, pp 757–760Google Scholar
  4. Aydan O, Ichikawa Y, Kawamoto T (1988) Reinforcement of geotechnical engineering structures by grouted rockbolts. In: proceedings of the international symposium on engineering in complex rock formations, pp. 732–738Google Scholar
  5. Bobet A, Einstein HH (2011) Tunnel reinforcement with rockbolts. Tunn Undergr Sp Technol 26(1):100–123Google Scholar
  6. Cai M, Champaigne D (2012) Influence of bolt-grout bonding on MCB conebolt performance. Int J Rock Mech Min Sci 49(1):165–175Google Scholar
  7. Carranza-Torres C, Fairhurst C (2000) Application of the convergence-confinement method of tunnel design to rock masses that satisfy the hoek-brown failure criterion. Tunn Undergr Sp Tech 15(2):187–213Google Scholar
  8. Dai F, Huang S, Xia K, Tan Z (2010) Some fundamental issues in dynamic compression and tension tests of rocks using split hopkinson pressure bar. Rock Mech Rock Eng 43(6):657–666Google Scholar
  9. Farmer IW (1975) Stress distribution along a resin grouted rock anchor. Int J Rock Mech Min Sci Geomech Abstr 12:347–351Google Scholar
  10. Freeman TJ (1978) The behavior of fully bonded rock bolts in the kielder experimental tunnel. Tunn Tunn Int 10(5):37–40Google Scholar
  11. Fu HY, Jiang ZM, Li HY (2011) Physical modeling of compressive behaviors of anchored rock masses. Int J Geomech 11(3):186–194Google Scholar
  12. He M, Li C, Gong W, Sousa LR, Li S (2017) Dynamic tests for a constant-resistance-large-deformation bolt using a modified SHTB system. Tunn Undergr Sp Tech 64:103–116Google Scholar
  13. Kang Y, Liu Q, Gong G, Wang H (2014) Application of a combined support system to the weak floor reinforcement in deep underground coal mine. Int J Rock Mech Min Sci 71:143–150Google Scholar
  14. Li CC (2010) A new energy-absorbing bolt for rock support in high stress rock masses. Int J Rock Mech Min Sci 47(3):396–404Google Scholar
  15. Li CC (2012) Performance of D-bolts under static loading. Rock Mech Rock Eng 45(2):183–192Google Scholar
  16. Li CC, Doucet C (2012) Performance of D-bolts under dynamic loading. Rock Mech Rock Eng 45(2):193–204Google Scholar
  17. Li C, Stillborg B (1999) Analytical models for rock bolts. Int J Rock Mech Min Sci 36(8):1013–1029Google Scholar
  18. Li XB, Lok TS, Zhao J (2005) Dynamic characteristics of granite subjected to intermediate loading rate. Rock Mech Rock Eng 38(1):21–39Google Scholar
  19. Li XB, Zou Y, Zhou ZL (2014) Numerical simulation of the rock SHPB test with a special shape striker based on the discrete element method. Rock Mech Rock Eng 47(5):1693–1709Google Scholar
  20. Li XB, Wu QH, Tao M, Weng L, Dong LJ, Zou Y (2016) Dynamic Brazilian splitting test of ring-shaped specimens with different hole diameters. Rock Mech Rock Eng 49(10):4143–4151Google Scholar
  21. Li YY, Zhang SC, Zhang BL (2018a) Dilatation characteristics of the coals with outburst proneness under cyclic loading conditions and the relevant applications. Geomech Eng 14:459–466Google Scholar
  22. Li YY, Zhang SC, Zhang X (2018b) Classification and fractal characteristics of coal rock fragments under uniaxial cyclic loading conditions. Arab J Geosci. CrossRefGoogle Scholar
  23. Ma S, Nemcik J, Aziz N (2013) An analytical model of fully grouted rock bolts subjected to tensile load. Constr Build Mater 49(1):519–526Google Scholar
  24. Ma S, Nemcik J, Aziz N, Zhang Z (2016) Numerical modeling of fully grouted rockbolts reaching free-end slip. Int J Geomech 16(1):04015020Google Scholar
  25. Manchao H, e Sousa RL, Müller A, Vargas E Jr, e Sousa LR, Xin C (2015) Analysis of excessive deformations in tunnels for safety evaluation. Tunn Undergr Sp Technol 45:190–202Google Scholar
  26. Nemcik J, Ma S, Aziz N, Ren T, Geng X (2014) Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load. Int J Rock Mech Min Sci 71:293–300Google Scholar
  27. Ren FF, Yang ZJ, Chen JF, Chen WW (2010) An analytical analysis of the full-range behaviour of grouted rockbolts based on a tri-linear bond-slip model. Constr Build Mater 24(3):361–370Google Scholar
  28. Shen BT (2014) Coal mine roadway stability in soft rock: a case study. Rock Mech Rock Eng 47:2225–2238Google Scholar
  29. Stillborg B (1984) Experimental investigation of steel cables for rock reinforcement in hard rock. Luleå Tekniska Universitet, LuleåGoogle Scholar
  30. Stjern G, Myrvang A (1998) The influence of blasting on grouted rockbolts. Tunn Undergr Sp Tech 13(1):65–70Google Scholar
  31. Tannant DD, Brummer RK, Yi X (1995) Rockbolt behaviour under dynamic loading: field tests and modelling. Int J Rock Mech Min Sci 32(6):537–550Google Scholar
  32. Vandermaat D, Saydam S, Hagan PC, Crosky AG (2016) Examination of rockbolt stress corrosion cracking utilising full size rockbolts in a controlled mine environment. Int J Rock Mech Min Sci 81:86–95Google Scholar
  33. Villalba E, Atrens A (2009) Hydrogen embrittlement and rock bolt stress corrosion cracking. Eng Fail Anal 16(1):164–175Google Scholar
  34. Wang G, Wu X, Jiang Y, Huang N, Wang S (2013) Quasi-static laboratory testing of a new rock bolt for energy-absorbing applications. Tunn Undergr Sp Tech 38:122–128Google Scholar
  35. Weng L, Huang L, Taheri A, Li X (2017) Rockburst characteristics and numerical simulation based on a strain energy density index: a case study of a roadway in linglong gold mine, china. Tunn Undergr Sp Tech 69:223–232Google Scholar
  36. Weng L, Li X, Taheri A, Wu Q, Xie X (2018) Fracture evolution around a cavity in brittle rock under uniaxial compression and coupled static–dynamic loads. Rock Mech Rock Eng 51(2):531–545Google Scholar
  37. Wu QH, Weng L, Zhao YL, Guo BH, Luo T (2019) On the tensile mechanical characteristics of fine-grained granite after heating/cooling treatments with different cooling rates. Eng Geol 253:94–110Google Scholar
  38. Zhang QB, Zhao J (2014) A Review of Dynamic Experimental Techniques and Mechanical Behaviour of Rock Materials. Rock Mech Rock Eng 47(4):1411–1478Google Scholar
  39. Zhao Y, Zhang L, Wang W, Pu C, Wan W, Tang J (2016) Cracking and stress–strain behavior of rock-like material containing two flaws under uniaxial compression. Rock Mech Rock Eng 49(7):2665–2687Google Scholar
  40. Zhao TB, Guo WY, Tan Y, Lu CP, Wang CW (2017a) Case histories of rock bursts under complicated geological conditions. Bull Eng Geol Environ. CrossRefGoogle Scholar
  41. Zhao Y, Wang Y, Wang W, Wan W, Tang J (2017b) Modeling of non-linear rheological behavior of hard rock using triaxial rheological experiment. Int J Rock Mech Min Sci 93:66–75Google Scholar
  42. Zhao Y, Zhang L, Wang W, Tang J, Lin H, Wan W (2017c) Transient pulse test and morphological analysis of single rock fractures. Int J Rock Mech Min Sci 91:139–154Google Scholar
  43. Zhao TB, Guo WY, Tan YL, Yin YC, Cai LS, Pan JF (2018) Case studies of rock bursts under complicated geological conditions during multi-seam mining at a depth of 800 m. Rock Mech Rock Eng 51(5):1539–1564Google Scholar
  44. Zhou ZL, Li XB, Liu A, Zou Y (2011) Stress uniformity of split Hopkinson pressure bar under half-sine wave loads. Int J Rock Mech Min Sci 48(4):697–701Google Scholar
  45. Zhou YX, Xia KW, Li XB, Li HB, Ma GW, Zhao J, Zhou ZL, Dai F (2012) Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials. Int J Rock Mech Min Sci 49:105–112Google Scholar
  46. Zhou ZL, Li XB, Zou Y, Jiang Y, Li G (2014) Dynamic Brazilian tests of granite under coupled static and dynamic loads. Rock Mech Rock Eng 47:495–505Google Scholar
  47. Zhou ZL, Chen L, Zhao Y et al (2017) Experimental and numerical investigation on the bearing and failure mechanism of multiple pillars under overburden. Rock Mech Rock Eng 50:995–1010Google Scholar
  48. Zhou ZL, Chen L, Cai X, Shen BT, Zhou J, Kun Du (2018) Experimental investigation of the progressive failure of multiple pillar-roof system. Rock Mech Rock Eng 51:1629–1636Google Scholar

Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal MinesHunan University of Science and TechnologyXiangtanChina
  2. 2.Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal MinesHunan University of Science and TechnologyXiangtanChina
  3. 3.School of Resources and Safety EngineeringCentral South UniversityChangshaChina
  4. 4.CSIRO Energy, QCATPullenvaleAustralia
  5. 5.School of Resources, Environment and Safety EngineeringHunan University of Science and TechnologyXiangtanChina

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