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Numerical modelling of fracture processes in thermal shock weakened rock

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

Details

Original languageEnglish
Title of host publicationGeomechanics and Geodynamics of Rock Masses, Volume 1 Proceedings of the 2018 European Rock Mechanics Symposium
EditorsVladimir Litvinenko
PublisherCRC Press
Pages883-888
ISBN (Electronic)9780429867729
Publication statusPublished - May 2018
Publication typeA4 Article in a conference publication
EventEuropean Rock Mechanics Symposium - St. Petersburg, Russian Federation
Duration: 22 May 201826 May 2018

Conference

ConferenceEuropean Rock Mechanics Symposium
CountryRussian Federation
CitySt. Petersburg
Period22/05/1826/05/18

Abstract

This paper presents some preliminary results of a research project aiming at the simulation of thermal shock assisted percussive drilling. In the present study, a numerical model for transient thermal shock induced damage in rock is presented. This model includes a rock mesostructure description accounting for different mineral properties and a thermo-mechanical constitutive model based on embedded discontinuity finite elements. In the numerical simulations, the thermal shock induced damge process is first simulated. Then the uniaxial
compression test on thermally affected numerical rock samples is carried out. The effect of thermal shock is demonstrated by comparison to uniaxial compression test simulation on intact rock. The results show that the thermal-shock assisted rock breakage is a feasible idea to be extended to percussive drilling as well.

Publication forum classification

Field of science, Statistics Finland