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小硐室爆破通常所称“小硐室爆破”,其导硐面积比大量爆破小,一般为 lm * lm, 装药量少。如果平硐断面小于 0.6m * 0.6m,则称为“蛇穴法”,此时蛇穴底部即为药室
expl. small-size chamber blasting

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