| 冷家坡2号隧道硬岩钻爆技术 |
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| 引用本文： | 张庆军. 冷家坡2号隧道硬岩钻爆技术[J]. 爆破, 1999, 16(3): 83-86 |
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| 作者姓名： | 张庆军 |
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| 作者单位： | 铁道部第十一工程局 |
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| 摘 要： | 在坚硬完整的岩石中进行铁路隧道开挖只用气腿式凿岩机钻孔，创下了月成洞超百米的好成绩，本文描述了炮孔利用率达９０％的三空孔三角形掏槽技术和半孔率达８５％以上光面爆破技术在隧道掘进中的应用情况。
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| 关 键 词： | 隧道掘进 掏槽爆破 光面爆破 |
Drilling and Blasting Technology for Hard Rock in Lengjiapo No.2 Tunnel |
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| Zhang Qingjun. Drilling and Blasting Technology for Hard Rock in Lengjiapo No.2 Tunnel[J]. Blasting, 1999, 16(3): 83-86 |
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| Authors: | Zhang Qingjun |
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| Affiliation: | The 11st Project Bureau of Railway Ministry |
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| Abstract: | An airleg rock drill is simply used to excavate hard and compact rock in a railway tunnel, and the result is satifactory. The tri empty hole trianglar cutting techynology with hole utilization ratio of 90% and smooth blasting technology with semi hole ratio of 85% are obtained, and their applications and experiments in tunnel excavation are introduced. |
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| Keywords: | tumnel excavation cut blasting smooth blasting |
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