n. cuthole
misc. breaking-in hole
掏槽眼(cut hole)。针对隧道开挖爆破只有一 个临空面的特点，为提高爆破效果，宜先在开挖 断面的适当位臵（一般在中央偏下部)布臵几个装 药量较多...
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掏槽炮眼 cuthole ; [矿业] snubber ; sumper ; [矿业] cut shot
一排掏槽眼 row of cuts
直眼掏槽 cylinder cut ; burn cut ; [矿业] parallel cut ; straight hole cutting
锥形掏槽炮眼组 pyramid cut round
平行空炮眼掏槽法 bur cut
直眼掏槽爆破 parallel cut blasting
平行空炮眼掏槽 michigan cut
不掏槽炮眼组 cutround
组合斜眼掏槽技术 combination inclined underholing technique
一个爆破炮眼组包括掏槽眼、辅助眼、压眼和边界眼。
A blast round consists of cut, relief, breast, and trim holes.
在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。
The loosening holes outside the plough cut are also drilled at an Angle which improves the breakage possibility.
其中涉及到光面爆破参数的选择与试验确定，掏槽眼的布置方式、装药结构、起爆手段、管道效应、爆破效果及特点。
The selection and test determination of smooth blasting parameters, layout of snubbers, charging structure, initiation device, tubing effect, blasting effect and its properties are involved.
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