Skip to main content
Log in

Stability evaluation of flat large-span cavern in jointed rock mass

  • Original Paper
  • Published:
Arabian Journal of Geosciences Aims and scope Submit manuscript

Abstract

The excavation of the rock mass will have a great influence on the characteristics of the caverns under extremely bad geological conditions. According to the characteristics of the engineering geology, several groups of the caverns are designed to be excavated in the rock mass with three sets of through joints. Based on the summary of the failure mechanism and the failure pattern, the classification method of the failure modes is done for the flat large-span underground cavern with three sets of through joints. The classification method takes into account the control factors of the surrounding rock instability, failure mechanism, distribution of the disturbed zone, and characteristics of the rock weakness, etc. The failure modes of the flat large-span caverns contain six types: the relatively stable, the partial area falling, and the partial collapse of vault, the zigzag failure of rock stratum, the V-shaped failure, and the large-scale collapse. The change law of the vertical stress is first increasing and then decreasing for the surrounding rock in the disturbed zone. The horizontal stress shows an exponential change trend with an increase in the distance from the vault. Influenced by the failure degree of the caverns, the change law of the vertical displacement for the vault can be divided into two types. The horizontal displacement decreases with an increase in the distance from the sidewall, and there is an exponential relationship between them.

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

Access this article

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

Instant access to the full article PDF.

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

Similar content being viewed by others

References

Download references

Acknowledgments

The authors greatly appreciate the contribution of China Rail Way Tunnel Survey & Design Institute Co., Ltd. for providing access to some data. The authors want to express sincere gratitude towards the anonymous reviewers for their thorough and in-depth remarks, which have greatly helped to improve the paper quality. The authors are grateful to the editor and reviewer for the discerning comments on this paper. Thanks to Beijing Jiaotong University’s International Academic Communication Writing Center for the modification of the language of this paper.

Funding

The work presented in this paper was funded by the National Natural Science Foundation of China (No. 51478031, 51278046).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Da-qing Kong.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Responsible Editor: Zeynal Abiddin Erguler

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Kong, Dq., Qiao, Cs. & Xue, Gc. Stability evaluation of flat large-span cavern in jointed rock mass. Arab J Geosci 13, 391 (2020). https://doi.org/10.1007/s12517-020-05357-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s12517-020-05357-z

Keywords

Navigation