| 水平层状岩体隧道超欠挖控制爆破技术 |
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| 引用本文： | 张运良,曹伟,王剑,雷明锋.水平层状岩体隧道超欠挖控制爆破技术[J].铁道科学与工程学报,2010,7(5). |
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| 作者姓名： | 张运良 曹伟 王剑 雷明锋 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 在水平层状岩体中进行隧道钻爆施工,由于岩层间夹制力非常小,极易受到震动而松弛、掉块,难以形成设计要求的拱形轮廓,超、欠挖现象严重。从大林隧道水平岩层的具体特点出发,分析了影响光面爆破效果的主要因素,并通过不断调整各爆破参数和加强施工管理等现场试验,总结了一套水平层状围岩光面爆破的施工技术。结果表明:该技术减少了超欠挖,改善了开挖质量,较好地解决了水平岩层成型困难的问题。
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| 关 键 词： | 隧道 控制爆破 水平层状岩体 超欠挖控制 |
Blasting technique for controlling excessive and insufficient excavation in tunnel with horiaontal layered rockmass |
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| ZHANG Yun-liang
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CAO Wei
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WANG-Jian
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LEI Ming-feng.Blasting technique for controlling excessive and insufficient excavation in tunnel with horiaontal layered rockmass[J].Journal of Railway Science and Engineering,2010,7(5). |
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| Authors: | ZHANG Yun-liang CAO Wei WANG-Jian LEI Ming-feng |
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| Institution: | ZHANG Yun-liang,CAO Wei,WANG-Jian,LEI Ming-feng(School of Civil Engineering , Architecture,Central South University,Changsha 410075,China) |
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| Abstract: | It is difficult to formulate arch outline and excessive and insufficient excavation is universal when blasting in horizontal layered rock mass.Because of the weak stress between the layers,the rock is easy to slack and drop when it is shake.In the light of concrete character in horizontal stratum of Da-Lin Tunnel,a suit smooth blasting technique in horizontal layered rock mass was summarized through analyzing the factors which influence the result of smooth blasting and adjusting the parameter of blasting i... |
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| Keywords: | tunnel control blasting horizontal layered rock mass excessive and insufficient excavation controlling |
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