Failure mechanism of karst cave wall during tunnelling

J. Wang, Y. Deng, L. Nbo Wu, X. Liu, Y. O. Yin, W. Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Karst caves are often encountered during tunnelling in China. When the caves are filled with groundwater with a high static head, drilling and blasting may induce failure or collapse in the cave wall, resulting in a water inrush or debris flow into the tunnel. The mechanism of damage to the cave wall must be elucidated in order to mitigate the hazards. A conceptual model was set up based on the Yuanliangshan Tunnel, where a cave wall collapse and debris flow were induced by drill-and-blast operations. Particle Flow Code was utilized to simulate the collapse of the cave wall and the evolution of the damage.

Original languageEnglish
Title of host publicationISRM AfriRock - Rock Mechanics for Africa
PublisherInternational Society for Rock Mechanics
Number of pages10
ISBN (Electronic)9781920410995
StatePublished - 2017
EventISRM AfriRock 2017 - Rock Mechanics for Africa - Cape Town, South Africa
Duration: 3 Oct 20175 Oct 2017

Publication series

NameISRM AfriRock - Rock Mechanics for Africa


OtherISRM AfriRock 2017 - Rock Mechanics for Africa
Country/TerritorySouth Africa
CityCape Town


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