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最近Atlas Copco公司研制一种破碎大块的新型设备Crac 200型“水炮”。过去露天矿、地下矿和破碎厂破大块,主要采用两种方法,即凿岩爆破法和落锤法。这两种方法是,工人劳动强度大,产生飞岩和有害烟尘,同时费用高。而Crac 200型“水炮”是使用安装在气缸内的活塞,把1.8公升的水以很高的速度射向孔底,通过水的冲击波传向孔壁,致使孔壁产生径向和轴向的裂缝,迫使裂缝以800毫米/毫秒的速度向大块表面发展,而达到破碎大块的目的。
Atlas Copco recently developed a new type of Crac 200 “water cannons” that break large chunks. In the past, opencast mines, underground mines and crushing plants were broken mainly by two methods, namely, rock blasting and drop hammering. Both of these methods are labor-intensive, flying rock and hazardous fumes, with high costs. The Crac 200 “water gun” uses a piston mounted in a cylinder that directs 1.8 liters of water toward the bottom of the hole at a high velocity and transmits it through the shock wave of the water to the hole wall, causing the hole wall to produce radial and axial Of the cracks, forcing the crack to 800mm / ms speed to the bulk surface development, and achieve the purpose of crushing large pieces.