Rockburst prevention using a novel de-stressing method

Amin Manouchehrian, Pinnaduwa H.S.W. Kulatilake

Research output: Contribution to journalConference articlepeer-review


De-stressing is a common rockburst control measure used in deep mines and tunnels. The benefits of using the de-stressing method to control rockburst have been demonstrated by its successful implementation. However, rockburst remains a threatening phenomenon in many deep underground excavations. Herein, a new de-stressing method for rockburst control is proposed. In this method, the rock is de-stressed by cutting notches at the excavation boundary. First, a circular tunnel is modeled and the stress distribution around the tunnel is then calculated. Thereafter, a notch was placed at the tunnel wall in a different model. The results revealed that when the notch was introduced to the model, the rock at the tunnel wall de-stressed, and the stress concentration zone moved far away from the wall. Additionally, an analysis of the failure zone around the tunnel and the velocity of the failed elements revealed that the failure of the notched tunnel was less violent than that of the tunnel without notches. Finally, a parametric study was conducted to investigate the influence of the notch length on the de-stressing process around the tunnel. The modeling results indicated that the proposed de-stressing method could be used to control rockburst in deep underground excavations.

Original languageEnglish (US)
Article number032014
JournalIOP Conference Series: Earth and Environmental Science
Issue number3
StatePublished - Oct 27 2021
Event11th Conference of Asian Rock Mechanics Society, ARMS 2021 - Beijing, China
Duration: Oct 21 2021Oct 25 2021

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences


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