Numerical modelling of thermal drilling of rock by heating-cooling cycle
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Details
| Original language | English |
|---|---|
| Title of host publication | Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers |
| Subtitle of host publication | Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering (ISRM 2019), September 13-18, 2019, Foz do Iguassu, Brazil |
| Publisher | CRC Press |
| Pages | 2547-2553 |
| Number of pages | 7 |
| ISBN (Electronic) | 9780367823177 |
| ISBN (Print) | 9780367422844 |
| DOIs | |
| Publication status | Published - 2020 |
| Publication type | A4 Article in a conference publication |
| Event | International Congress on Rock Mechanics and Rock Engineering - Duration: 1 Jan 1900 → … |
Publication series
| Name | Proceedings in Earth and geosciences |
|---|---|
| Volume | 6 |
| ISSN (Print) | 2639-7749 |
| ISSN (Electronic) | 2639-7757 |
Conference
| Conference | International Congress on Rock Mechanics and Rock Engineering |
|---|---|
| Abbreviated title | ISRM |
| Period | 1/01/00 → … |
Abstract
This paper presents a numerical study on thermal drilling of rock. In this context, thermal drilling refers to the disintegration of rock surface material when exposed to a heat shock consisting of an intensive external thermal flux and consequent rapid cooling. An embedded discontinuity finite element approach is chosen for modelling the rock cracking due to the heating-cooling cycle. The underlining uncoupled thermo-mechanical problem is solved by an
explicit time stepping scheme with mass scaling to increase the time critical time step. Numerical simulation of a heterogeneous rock sample under axisymmetric conditions demonstrate that the drilling by a rapid heating-cooling cycle is a feasible method at conditions where the bulk rock is at elevated temperatures.
explicit time stepping scheme with mass scaling to increase the time critical time step. Numerical simulation of a heterogeneous rock sample under axisymmetric conditions demonstrate that the drilling by a rapid heating-cooling cycle is a feasible method at conditions where the bulk rock is at elevated temperatures.