Treatment of rock surfaces

Details Treatment of rock surfaces Treatment of rock surfaces

E - Fixed Constructions

21

D

E21D 11/38 (2006.01) E21D 11/00 (2006.01) E21D 9/06 (2006.01)

Patent

CA 2395366

A method for providing a protective coating in a mine comprises spraying onto the rock surfaces of the mine a hot melt adhesive in an amount to form a coating at least 1 mm, preferably at least 2 mm in thickness and allowing to coating to solidify. The hot melt adhesive preferably has a melting point on the range from 70 to 250 degrees Centigrade and may include a filler such as an inert material in finely divided form such as ground limestone, mica, sand and silica, the filler comprising between 1 and 40 % by weight of the combined weight of adhesive and filler.

L'invention concerne un procédé permettant d'obtenir un revêtement de protection dans une mine, qui consiste à pulvériser sur les surfaces rocheuses de la mine un adhésif thermofusible en une quantité permettant de former une couche d'au moins 1 mm, de préférence d'au moins 2 mm en épaisseur, et à laisser durcir ce revêtement. L'adhésif thermofusible possède un point de fusion de préférence dans le domaine de 70 à 250 DEG C, et il peut contenir une charge, telle qu'un matériau inerte sous forme finement divisée, comme par exemple de la chaux, du mica, du sable et de la silice broyés, la charge représentant entre 1 et 40 % en poids du poids combiné d'adhésif et de la charge.

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