| 硬岩隧道快速掘进的钻爆技术 |
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| 引用本文： | 杨年华,张志毅,邓志勇,刘慧,王中黔. 硬岩隧道快速掘进的钻爆技术[J]. 工程爆破, 2003, 9(1): 16-21 |
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| 作者姓名： | 杨年华 张志毅 邓志勇 刘慧 王中黔 |
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| 作者单位： | 中国铁道科学研究院,北京,100081 |
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| 摘 要： | 以秦岭隧道掘进为例 ,研究了实现硬岩特长隧道月进尺 3 0 0m以上快速掘进的钻爆技术。研究认为 ,选择与岩石匹配良好的炸药、优化掏槽方案、提高钻孔精度、用机制炮泥堵塞 ,是实现硬岩隧道快速、高效钻爆法掘进的主要对策。试验结果表明 ,采取上述措施后 ,炸药单耗降低了约 3 0 % ,每循环的炮孔数减少了 2 4% ,钻爆成本节减了近 2 0 % ,掘进速度保持在 3 0 0m/月以上
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| 关 键 词： | 隧道掘进 深孔爆破 快速掘进 硬岩 波阻抗匹配 |
| 文章编号： | 1006-7051(2003)01-0016-06 |
| 修稿时间： | 2002-11-06 |
DRILLING-AND-BLASTING TECHNOLOGY FOR RAPID EXCAVATION OF HARD-ROCK TUNNELS |
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| YANG Nian hua,ZHANG Zhi yi,DENG Zhi yong,LIU Hui,WANG Zhong qian. DRILLING-AND-BLASTING TECHNOLOGY FOR RAPID EXCAVATION OF HARD-ROCK TUNNELS[J]. Engineering Blasting, 2003, 9(1): 16-21 |
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| Authors: | YANG Nian hua ZHANG Zhi yi DENG Zhi yong LIU Hui WANG Zhong qian |
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| Abstract: | Taking the excavation of Qinling Tunnel as an example,the drilling and blasting technology is researched for rapid excavation of extra long tunnels in hard rock,with an advance rate of 300m/mth It is considered that the main countermeasures for realizing rapid excavation of hard rock tunnels are selection of the explosive having a good impedance matching to rock,optimization of cut pattern,improvement of drilling accuracy and use of stemming plug Test results show that powder factor is decreased by about 30%,blastholes per round reduced by 24%,the cost of drilling and blasting saved by 20% and the tunneling rate of over 300m/mth kept up after taking the above measures |
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| Keywords: | Tunneling Long hole blasting Rapid excavation Hard rock Impedance matching |
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