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

Abstract

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
Pages705-714
Number of pages10
ISBN (Electronic)9781920410995
StatePublished - 1 Jan 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
Volume2017-October

Other

OtherISRM AfriRock 2017 - Rock Mechanics for Africa
CountrySouth Africa
CityCape Town
Period3/10/175/10/17

Fingerprint Dive into the research topics of 'Failure mechanism of karst cave wall during tunnelling'. Together they form a unique fingerprint.

Cite this