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露天矿宽采场中抛掷爆破的效率R·L·马丁等位于桑德盆地黑桑德煤矿的全部4个采场的爆破工作的焦点都集中在抛掷效率上。其4个采场的宽度为190~265英尺,台阶高度为90~175英尺,抛掷效率随着其几何尺寸的不同而不同。例如,200英尺宽的采场最终抛掷率...
The Efficiency of Throwing Blast in a Wide-open-field Open Pit Mine blasting efforts at all four stopes, including RH Sand Martin at the Sands Basin, have focused on the throwing efficiency. The four stopes have a width of 190-265 feet and a step height of 90-175 feet. The throwing efficiency varies with their geometry. For example, a 200 foot wide staccato final throw rate ...