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Underground rock dissolution and geomechanical issues

Laouafa, Farid and Guo, Jianwei and Quintard, Michel Underground rock dissolution and geomechanical issues. (2019) In: 53rd US Rock Mechanics / Geomechanics Symposium ARMA 19, 23 June 2019 - 26 June 2019 (New York City, United States).

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Abstract

This paper deals with the problem of the dissolution of soluble underground rocks and the geomechanical consequences such as subsidence, sinkholes and underground collapse. In this paper, the rock dissolution and the induced underground cavities aremodeled using a Diffuse Interface Model. We describe briefly the method. We used to perform the transition (upscaling) from a multiphysics problem formulated at the microscopic scale level (pore-scale) to the macroscopic scale level (Darcy-scale). Rock material considered in this paper is gypsum, despite that the developed method is also suitable for more soluble rocks. The mechanical consequences of dissolution are analyzed fortwo theoretical configurations, i.e., lens and pillar

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02290041
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
French research institutions > Institut National de l'Environnement Industriel et des Risques - INERIS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Southwest Jiaotong University - SWJTU (CHINA)
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Deposited On:17 Sep 2019 10:38

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