DIMINUTION DE LA POUSSIERE DE PIERRE
The VARISTEM® concentre l'onde de choc au sein de la masse rocheuse réduisant la force du souffle sortant du puit de forage ainsi que son nuage de poussiere.
Les dangers de la poussière[1] de pierre sont tres connus. Il est strictement controlé par des réglementations en vigueur. Le VARISTEM veut aider directement le montant de matière propulsé et rejeté dans les airs par le trou de forage. Le VARISTEM reduit la poussiere et aide a diminuer les besoins en quantite de materiau de bourrage.The reduction in fly-rock can potentially allow for blasting in areas which had previously been off-limits due to community concerns.
Proper stemming is crucially important for mitigating fly-rock risks. The VARISTEM can assist you in your risk management by helping retain the blast force within the rock, thereby helping to minimize the amount of material ejected out of the blast hole. The VARISTEM will help reduce fly rock and shorten stemming heights, however it is still important that each mine/quarry tests its acceptable use in their own particular environment if fly rock is a concern.
In addition to these important safety & regulatory concerns, there are some other practical benefits as well. The reduction in fly-rock can potentially allow for blasting in areas which had previously been off-limits due to community concerns. For more information about this potential benefit, see our study of Flyrock Near Community Areas