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隧道切缝管聚能光面爆破技术

Weidong WANG,Xingchao TIAN,Liansheng LIU,Qi DANG

Construction Technology（2020）

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Abstract
为解决下营隧道超、欠挖问题,提高光面爆破效果,基于聚能爆破原理,采用PVC切缝管作为约束条件及传能介质.通过现场试验分析切缝管聚能光面爆破技术原理,开展光面爆破优化效果研究.研究结果表明,相同岩性条件下,采用切缝管聚能光面爆破技术可将周边眼间距增加约70cm,炮孔半眼痕率提高5%左右,超挖控制为<50mm,欠挖现象基本得到控制,具有良好的经济效益.
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