Strata movement indicator

G - Physics – 01 – V

Patent

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Details

G01V 9/00 (2006.01) G01B 5/30 (2006.01)

Patent

CA 2099304

A strata movement indicator includes at least two lengths of suspension wire respectively for remote and near anchors locatable in the same borehole. Each wire carries a cylinder provided with indicator markings, the cylinders being moveable with respect to one another and to a reference tube fixed in the mouth of the borehole. Relative movement of the cylinders with respect to one another and/or to the reference tube indicates the degree of strata movement.

Dispositif indicateur de mouvement de strates comprenant au moins deux longueurs de câble de suspension respectivement pour dispositifs d'ancrage à distance et rapprochés localisables dans le même trou de forage. Chaque câble comporte un cylindre fourni avec des marques d'indication, les cylindres sont mobiles à l'un et par rapport à l'autre et par rapport à un tube de référence fixé à l'entrée du trou de forage. Le déplacement relatif des cylindres l'un par rapport à l'autre et par rapport au tube de référence indique le degré de déplacement des strates.

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