File:Houille grisou.jpg
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Français : Représentation simplifiée des relations charbon-gaz-eau (nappe en bleue) et liens avec la surface et l'atmosphère selon la présence de failles, affleurement du charbon, puits ou galeries d'/expoitation/aération ancienne (avec éventuelle remontée et/ou fluctuations de nappes) et roches de couverture plus ou moins perméable/imperméable au gaz et/ou à l'eau. + effet de drainage (la nappe étant ici supposée circuler de la droite vers la gauche où l'on voit une cours d'eau ou un estuaire)
1 puits ou galerie non colmaté, ou affleurement naturel 2 faille naturelle 3 affaissements ou effondrement minier 4 rejet d'eaux pouvant contenir du méthane 5 Nappe (plus ou moins fluctuante) 6 Ancienne mine souterraine 7 remontée de nappe plus ou moins fluctuante 8 remontée de gaz par percolation dans une roche perméable au gaz English: System "Mine-coal-water-gas and link with surface / " with fractures and faults, more or less permeable covering strata and Water drainage or seepag. |
| Date | |
| Source | Own work |
| Author | Lamiot |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:30, 4 January 2014 | | 1,277 × 718 (222 KB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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