Implicit modelling and variational remeshing tools : Application to the abandoned coal mines of Lorraine .

Wendy Steckiewicz-Laurent and Pauline Collon and Jeanne Pellerin and Gautier Laurent and Guillaume Reichart and Laurent Vaute. ( 2013 )
in: Proc. 33rd Gocad Meeting, Nancy, France, pages 1--16

Abstract

Until 2004, Lorraine was one of the high place of coal production in France. The recent closure of the mines has been quickly followed by a flooding of the underground network of galleries. With an average temperature of 59◦ C at a depth of 1200 meters, the water stored in these mines now constitutes a potential resource of low-temperature geothermal energy. In such a context, previously installed infrastructures could be directly re-used for water injection and pumping. This requires to correctly understand groundwater flows because mining galleries could shorten the geothermal loop. For this purpose, a complete volumetric 3D model of the Merlebach mine, located in Sarre and Moselle claim, has been realized. The complexity of this case study resides in the combination of several requirements: i) represent the main infrastructures such as galleries and wells, ii) model individually the 107 very thin, sub-vertical, mineralized veins which are stacked on 1.8km, iii) create a 3D regular volumetric grid with less than 135 millions cells where exploited veins, unexploited veins, infrastructures, sandstone and overburden are flagged. This was achieved using lately developed geomodelling techniques: an implicit modelling approach and a geological surface remeshing.

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BibTeX Reference

@inproceedings{Steckiewicz-laurent2013,
 abstract = { Until 2004, Lorraine was one of the high place of coal production in France. The recent closure of the mines has been quickly followed by a flooding of the underground network of galleries. With an average temperature of 59◦ C at a depth of 1200 meters, the water stored in these mines now constitutes a potential resource of low-temperature geothermal energy. In such a context, previously installed infrastructures could be directly re-used for water injection and pumping. This requires to correctly understand groundwater flows because mining galleries could shorten the geothermal loop. For this purpose, a complete volumetric 3D model of the Merlebach mine, located in Sarre and Moselle claim, has been realized. The complexity of this case study resides in the combination of several requirements: i) represent the main infrastructures such as galleries and wells, ii) model individually the 107 very thin, sub-vertical, mineralized veins which are stacked on 1.8km, iii) create a 3D regular volumetric grid with less than 135 millions cells where exploited veins, unexploited veins, infrastructures, sandstone and overburden are flagged. This was achieved using lately developed geomodelling techniques: an implicit modelling approach and a geological surface remeshing. },
 author = { Steckiewicz-Laurent, Wendy AND Collon, Pauline AND Pellerin, Jeanne AND Laurent, Gautier AND Reichart, Guillaume AND Vaute, Laurent },
 booktitle = { Proc. 33rd Gocad Meeting, Nancy, France },
 pages = { 1--16 },
 title = { Implicit modelling and variational remeshing tools : Application to the abandoned coal mines of Lorraine . },
 year = { 2013 }
}