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远点范围
与某一几何尺寸〈例如,钻孔直径或平巷或平硐的水力直径〉有关的距某一关注点的距离。远点、中近点和近点之间的界限是根据每一具体使用场合确定的。例如,在地表大直径孔爆破中,影响超过了距爆源 100m 范围, 而在地下爆破中,远点约为掘进平巷或平硐的水力直径的2倍
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