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Keywords: chalk
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-141
...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Impact of weathering on macro-mechanical properties of chalks C. Auvray & N. Lafrance Université de Lorraine, CNRS, CREGU, GeoRessources Laboratory...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-075
..., France C. Auvray Université de Lorraine, CNRS, CREGU, GeoRessources Laboratory, France V. Labiouse Haute Ecole d Ingénierie et d Architecture de Fribourg, Fribourg, Switzerland T. Belem Université du Québec en Abitibi-Témiscamingue, RIME, Rouyn-Noranda, QC, Canada ABSTRACT: Chalk rocks have been used for...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-051
... important inputs for the prediction of drill bit wear rate and design of various parts of drilling/tunneling/mining equipment. In this paper, a classification of flints (sampled from the English, French and Danish Chalk) which correlates with the abrasivity and hardness of flints is proposed. The results...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-213
... developed to investigate the multi-physical effect of acid injection in chalk reservoirs. The geometry for the numerical simulation is based on a previously published experimental work. Numerical simulation is based on control volume methods for fluid flow in porous media using a Darcy model, and stress...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-033
... Abstract In this paper, we present the rock mechanics tests performed at Laboratory of Lyons of the CEREMA (known at the time as CETE de Lyon), following the fire of September 2008 in che Channel tunnel. Whereas chalk marl was unaffected by the fire even in the most damaged zone, several...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-070
... Abstract In the present work, an attempt has been achieved to describe the effects of ageing and of water on the hydro-mechanical behaviour of chalks from underground quarries of northern Parisian basin. Physical and mechanical properties were obtained as a function of distances from the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-027
... porosity under general triaxial loadings. The resulting model has the advantage to be physical relevant and based on a single macroscopic yield function which also plays the role of plastic potential. It is numerically implemented and validated by comparison with experimental data on a porous chalk. 1...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-092
... generated by brittle failure within the chalk material of the bell-shaped caves. cavern experiment geometry Reservoir Characterization bell-shaped cavern nanoseismic monitoring source process pre-collapse detection international journal chalk Tsesarsky cavity Upstream Oil & Gas...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-001
... ABSTRACT: A series of triaxial extension tests have been performed on high porosity chalk, and a failure criterion has been determined. In extensional failure the chalk may undergo large deformations at constant stresses (ideal plastic behaviour). The failure mechanism is shear failure, except...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-002
... ABSTRACT: As a part of a global research dealing with the validation of geomaterials' models (chalk in this case), torsion-compression tests were realized. These tests were made under drained conditions with methylic alcohol according two paths of stress: a isotropic compression and a...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-116
... ABSTRACT: Seismic tomographic surveys were carried out from within the pilot heading of a large storage cavern in chalk. The tomograms constitute Class' A' (a priori) predictions of the faulting patterns that were subsequently revealed and logged during the later excavation of the full cavern...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-182
... intense fracturation or existence of cleavage planes may not be a soft rock in the sense above. To the class of soft rocks belong geomaterials, usually but not exclusively, of sedimentary origin, for instance marls, calcarenites, tuffs, shales, chalks. Limestone, slate or saprolitic rocks can also be...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-110
... ABSTRACT: This paper includes a study of the compaction of a petroleum reservoir in a very porous carbonate rock (chalk). After a presentation of laboratory tests performed on this rock, we propose an elastoplasuc constitutive model for the description of its behaviour. This constitutive model...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-160
... ABSTRACT: Based on the concepts of the mechanics of unsaturated soils where capillary phenomena arise between the wetting fluid (water) and the non-wetting one (air), the subsidence of chalks containing oil (non- wetting fluid) during water injection (wetting fluid) is analysed. It is shown...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 93, June 21–24, 1993
Paper Number: ISRM-EUROCK-1993-144
... Fluid Dynamics grout material chalk transmissivity borehole flow process grout Department mathematical model underground flow velocity pressure test penetration permeability test method evaluation possible only foundation Eurock '93, Ribeiro e Sousa & Grossmann (eds) © 1995 Balkema...

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