Geophysical survey to estimate the 3D sliding surface and the 4D evolution of the water pressure on part of a deep seated landslide

Terra Nova - Tập 17 Số 5 - Trang 399-406 - 2005
Thomas Lebourg1, Stéphane Binet2, E. Tric1, Hervé Jomard1, Samyr El Bedoui1
1Labo. Géosciences Azur, UMR 6526, UNSA, 250 r. A. Einstein, 06560 Valbonne, France
2EA2642 Géosciences: Déformation, Écoulement, Transfert, 16 route de Gray, 25030 Besancon, France

Tóm tắt

Abstract

Geophysical surveys were conducted on the very unstable front part of the La Clapière landslide in the French Alps (Alpes Maritimes). The electrical resistivity survey was carried out to obtain, for the first time on this deep‐seated landslide, 3D information on the slipping surface and the vertical drained faults. Moreover, we planned to follow within time (6 months) the evolution of the saturated zones (presence of gravitational water) and their percolation into the shearing zones. Our 4D results showed the importance of the complex water channelization within the slope and relation to geological discontinuities.

Từ khóa


Tài liệu tham khảo

Blavoux B., 1983, Séparation des composantes de l’écoulement d‘un exutoire karstique à l'aide des méthodes physico‐chimiques, Hydrogeologie, 4, 269

10.1016/j.jhydrol.2003.12.013

Compagnon F., 1997, Chemical and isotopic natural tracing of seepage waters in an important landslide: example from La Clapière landslide (Alpes‐Maritimes, France), C. R. Acad. Sci. Paris, 325, 565

10.1190/1.1440762

Follaci J.P., 1987, Les mouvements du versant de la Clapière à Saint‐Etienne‐de‐Tinée (Alpes Maritimes), Bull. Lab. Ponts Chaussées, 150, 39

Follaci J.P., 1999, Seize ans de surveillance du glissement de la Clapière (Alpes Maritimes), Bull. Lab. Ponts Chaussées, 220, 35

10.1016/0926-9851(93)90005-J

10.1007/s10064-001-0144-z

10.1016/S0022-1694(00)00166-9

10.1007/s10064-001-0144-z

Ivaldi J‐P., 1991, Plis de couverture en échelon et failles de second ordre associés à un décrochement dextre de socle sur le bord nord‐ouest de l'Argentera (Alpes‐Maritimes, France), C. R. Acad. Sci. Paris, série II, 313, 361

Jongmans D., 2000, Application of 2D electrical and seismic tomography techniques for investigating landslides, Eur. J. Environ. Eng. Geophys., 5, 75

Lebourg T., 2001, Mesures géophysiques pour l'analyse des glissements de terrain. Revue Française de Géotechnique, Numéro spécial consacré aux ‘‘mouvements de versant’’, 96, 33

Lebourg T., 2003, Geophysical Survey to Understand Failure Mechanisms Involved on Deep Seated Landslides

Loke M.H. 1997.Res2DINV software user's manual.

10.1111/j.1365-2478.1996.tb00142.x

Mudry J., 1994, Use of natural tracing to understand how an aquifer works. Basic and applied hydrogeological research in French karstic areas, 27

10.1016/S0926-9851(99)00008-7

10.1016/0926-9851(95)00023-2

10.1016/S0926-9851(01)00044-1