Failure mechanism of karst cave wall during tunnelling

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

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-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

Caves
failure mechanism
cave
karst
Debris
debris flow
Tunnels
tunnel
drill and blast
damage
Blasting
blasting
Groundwater
water flow
Drilling
Hazards
drilling
hazard
groundwater
Water

Cite this

Wang, J., Deng, Y., Nbo Wu, L., Liu, X., Yin, Y. O., & Liu, W. (2017). Failure mechanism of karst cave wall during tunnelling. In ISRM AfriRock - Rock Mechanics for Africa (pp. 705-714). (ISRM AfriRock - Rock Mechanics for Africa; Vol. 2017-October). International Society for Rock Mechanics.
Wang, J. ; Deng, Yang ; Nbo Wu, L. ; Liu, X. ; Yin, Y. O. ; Liu, W. / Failure mechanism of karst cave wall during tunnelling. ISRM AfriRock - Rock Mechanics for Africa. International Society for Rock Mechanics, 2017. pp. 705-714 (ISRM AfriRock - Rock Mechanics for Africa).
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Wang, J, Deng, Y, Nbo Wu, L, Liu, X, Yin, YO & Liu, W 2017, Failure mechanism of karst cave wall during tunnelling. in ISRM AfriRock - Rock Mechanics for Africa. ISRM AfriRock - Rock Mechanics for Africa, vol. 2017-October, International Society for Rock Mechanics, pp. 705-714, ISRM AfriRock 2017 - Rock Mechanics for Africa, Cape Town, South Africa, 3/10/17.

Failure mechanism of karst cave wall during tunnelling. / Wang, J.; Deng, Yang; Nbo Wu, L.; Liu, X.; Yin, Y. O.; Liu, W.

ISRM AfriRock - Rock Mechanics for Africa. International Society for Rock Mechanics, 2017. p. 705-714 (ISRM AfriRock - Rock Mechanics for Africa; Vol. 2017-October).

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

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Wang J, Deng Y, Nbo Wu L, Liu X, Yin YO, Liu W. Failure mechanism of karst cave wall during tunnelling. In ISRM AfriRock - Rock Mechanics for Africa. International Society for Rock Mechanics. 2017. p. 705-714. (ISRM AfriRock - Rock Mechanics for Africa).