Skip to main content
SpringerLink
Log in

Analysis of Mechanical Strength and Failure Morphology of Prefabricated Closed Cracked Rock Mass Under Uniaxial Compression

  • Original Paper
  • Published:
Geotechnical and Geological Engineering Aims and scope Submit manuscript

Abstract

In order to obtain the mechanical strength and failure characteristics of fractured rock masses with prefabricated closed crack, Based on the indoor uniaxial compression test, the parameters of the prefabricated closed crack specimens were calibrated. The PFC3D software was used to perform the uniaxial compression simulation test on the prefabricated closed crack rock-like material. The change rules of mechanical parameters of fractured specimens with different prefabricated closed cracks and the failure morphology of rock specimens were obtained. The results showed that: most of the parameters such as elastic modulus, secant modulus, deformation modulus, peak strength and peak strain of the specimen showed a downward trend with the increase of crack diameter and inclination. Among all the parameters, the change of crack inclination angle and diameter had the greatest impact on the Peak strength, and the least influence on Secant modulus; Micro cracks mainly occurred around the prefabricated crack, and when the diameter of prefabricated cracks was small, micro cracks outside the prefabricated cracks were more likely to appear; With the increase of crack diameter and inclination angle, the stress at the moment when the first micro crack appears first decreased and then increased; The growth process of the number of micro cracks had gone through three stages: the stage of no micro cracks, the stage of unstable growth of micro cracks and the stage of rapid growth of micro crack.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  • Atkinson KB (1984) Subcritical crack growth in geological materials. J Geophys Res 89(B6):4077–4114

    Article  Google Scholar 

  • Bobet A, Einstein HH (1998) Fracture coalescence in rock-type material under uniaxial and biaxial compression. Int J Rock Mech Min Sci 35(7):863–888

    Article  Google Scholar 

  • Brace WF, Bombolakis EG (1963) A note on brittle crack growth in compression. J Geophys Res 68(12):3709–3713

    Article  Google Scholar 

  • Cen DF, Huang D (2014) Mesoscopic displacement modes of crack propagation of rock mass under uniaxial compression with high strain rate. J China Coal Soc 39(03):436–444 (in Chinese)

    Google Scholar 

  • Chen PY (2015) Characteristics analysis of slop structure and stability study on high rock slope: a case study of the high rock slopes in longsi mine, Jiaozuo city. China University of Geosciences, Wuhan (in Chinese)

    Google Scholar 

  • Fang Z, Harrison JP (2003) Development of local degradation approach to the modelling of brittle fracture in heterogeneous rocks. Int J Rock Mech Min Sci 39(4):443–457

    Article  Google Scholar 

  • Fu JW, Zhu WS, Xie FD, Xue WQ, Zhang DF, Li Y (2013) Experimental studies and elasto-brittle simulation of propagation and coalescence process of two three-dimensional flaws in rocks. Rock Soil Mech 34(09):2489–2495 (in Chinese)

    Google Scholar 

  • Goodman RE, Taylor RL, Brekke TL (1968) A model for the mechanics of jointed rock. J Soil Mech Found Div 94:637–660

    Google Scholar 

  • Jiang MJ, Chen H, Zhang N, Fang R (2014) Distinct element numerical analysis of crack evolution in rocks containing pre-existing double flaw. Rock Soil Mech 35(11):3259–3268 (in Chinese)

    Google Scholar 

  • Liu HW, Yang C (2016) Micro-analysis of uniaxial compression of cracked rock containing open or closing fissure based on PFC. Water Resour Power 34(01):131–135 (in Chinese)

    Google Scholar 

  • Nolen-Hoeksema RC, Gordon RB (1987) Optical detection of crack patterns in the opening-mode fracture of marble. Int J Rock Mech Min Sci Geomech 24(2):135–144

    Article  Google Scholar 

  • Park CH, Bobet A (2010) Crack initiation, propagation and coalescence from frictional flaws in uniaxial compression. Eng Fract Mech 77(14):2727–2748

    Article  Google Scholar 

  • Pu CZ, Cao P, Chen Y, Yi YL, Zhang XY (2011) Fracture test and failure mechanism of rock-like material of relatively different fracture apertures. J Central South Univ (Sci Technol) 42(08):2394–2399 (in Chinese)

    Google Scholar 

  • Tang CA, Zhao W (1997) RFPA2D system for rock failure process analysis. Chin J Rock Mech Eng 016(005):507–508 (in Chinese)

    Google Scholar 

  • Tang C (1997) Numerical simulation of progressive rock failure and associated seismicity. Int J Rock Mech Min Sci 34(2):249–261

    Article  Google Scholar 

  • Xie QT, Guo JZ, Wang JL, Chen YG (2011) A study of crack propagation measurement on sandstone with a single inclined flaw under uniaxial compression. Rock Soil Mech 32(10):2917–2921 (in Chinese)

    Google Scholar 

  • Yang TH, Tu XL, Yu B, Zhang YB, Li LC, Tang CA, Tan GH (2005) A micro mechanical model for simulating the coupling of fracture and flow of rock. Chin J Solid Mech 026(003):333–337 (in Chinese)

    Google Scholar 

  • Zhong BB, Zhang YB, Li H (2014) Study of mechanisms of crack propagation of rock based on RFPA2D. J Wuhan Univ Technol 36(02):82–88 (in Chinese)

    Google Scholar 

  • Zhang B, Li SC, Zhang DF, Li MT, Shao DL (2012) Uniaxial compression mechanical property test, fracture and damage analysis of similar material of jointed rock mass with filled cracks. Rock Soil Mech 33(06):1647–1652 (in Chinese)

    Google Scholar 

  • Zhao C, Tian JS, Hiroshi MATSUDA et al (2015) Crack propagation and damage of rock under uniaxial compression based on global strain field analysis. Chin J Rock Mech Eng 34(04):763–769 (in Chinese)

    Google Scholar 

  • Zhang GK, Li HB, Wang MY, Li XF (2019) Crack propagation characteristics in rocks containing single fissure based on acoustic testing and camera technique. Rock Soil Mech 40(S1):63–72 (in Chinese)

    Google Scholar 

  • Zhang WQ, Wang ZC (2018) Research and application of mechanism of water inrush in fault (secondary fault) activation after coal extraction. China University of Mining and Technology press (Monograph) (in Chinese)

Download references

Acknowledgements

This work was supported by the National Natural Science Foundation of China (51774199).

Author information

Authors and Affiliations

  1. Department of Resources and Civil Engineering, Shandong University of Science and Technology, Taian, 271019, China

    Longyu Zhang & Jiming Zhu

Authors
  1. Longyu Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jiming Zhu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Jiming Zhu.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhang, L., Zhu, J. Analysis of Mechanical Strength and Failure Morphology of Prefabricated Closed Cracked Rock Mass Under Uniaxial Compression. Geotech Geol Eng 38, 4905–4915 (2020). https://doi.org/10.1007/s10706-020-01335-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10706-020-01335-0

Keywords

Search

Navigation