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Numerical study on the effect of confinement on thermal spallation drilling of hard rock

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko International Conference CIBv2019 Civil Engineering and Building Services 1-2 November 2019, Brașov, Romania
KustantajaIOP Publishing Ltd.
Sivumäärä8
Vuosikerta789
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
Tapahtuma International Conference Civil Engineering and Building Services -
Kesto: 1 marraskuuta 20192 marraskuuta 2019

Julkaisusarja

NimiIOP Conference Series: Materials Science and Engineering
Vuosikerta789
ISSN (elektroninen)1757-899X

Conference

Conference International Conference Civil Engineering and Building Services
Ajanjakso1/11/192/11/19

Tiivistelmä

This paper presents a numerical study on the effect of confining pressure (down-to-hole pressure) on the performance of the thermal jet drilling on rock. For this end, a numerical method including a viscoplastic-damage model for rock and an explicit scheme for solving the governing thermo-mechanical problem, which is assumed uncoupled. Moreover, rock heterogeneity, which facilitates the thermal spallation phenomenon, is taken into account. Numerical simulations under axisymmetric conditions demonstrate that the efficiency of thermal spallation based drilling is reduces drastically due to confinement.

Julkaisufoorumi-taso

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