A method and apparatus for pressure wave suppression in...

F - Mech Eng,Light,Heat,Weapons – 42 – D

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F42D 1/18 (2006.01) E21C 37/14 (2006.01) E21C 37/16 (2006.01) F42D 3/04 (2006.01) F42D 5/045 (2006.01) F42D 5/05 (2006.01) F42D 5/055 (2006.01)

Patent

CA 2365678

The present invention is directed to a method for selecting pressure wave suppression devices from among a menu of pressure wave suppression devices to satisfy the pressure wave requirements of a given job or application. The present invention is further directed to pressure wave suppression devices that can be used in the hole, at or near the opening of the hole, or at a distance from the hole to perform pressure wave and/or flyrock protection. The invention is particularly useful in suppressing airblast and other excavation equipment noise in urban areas.

La présente invention se rapporte à un procédé de sélection de dispositifs de suppression des ondes de pression parmi un ensemble de tels dispositifs dans le but de satisfaire à des exigences relatives aux ondes de pression pour un travail donné ou une application donnée. Elle se rapporte notamment à des dispositifs de suppression des ondes de pression qui peuvent être utilisés dans un trou, au niveau de l'orifice d'un trou ou à proximité dudit orifice, ou à une certaine distance du trou de manière à assurer la protection contre les ondes de pression et/ou les projections de pierre. Cette invention s'avère particulièrement utile pour supprimer les jets d'air et autre bruit provenant d'engins de travaux de terrassement dans des zones urbaines.

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