程康,苏微倩,张桂涛,武金贵

• 1:武汉理工大学土木工程与建筑学院
• 2:中天路桥有限公司

摘要(Abstract)：

隧道掘进中,控制围岩的超欠挖,即控制光面爆破效果是决定隧道掘进成败的主要考量指标。隧道掘进控制光面爆破效果的参数有周边孔间距、装药量、装药结构等,其中周边孔间距是保证光面爆破质量的最重要参数。通过理论分析LS—DYNA数值模拟平台,建立空气间隔装药双孔爆破模型,计算了周边孔间距在30 cm、40 cm、50 cm和60 cm条件下孔壁压应力及孔壁破坏情况,得出了Ⅲ类围岩中,周边孔间距在40～50 cm可获得良好的爆破效果,并通过现场试验进行了验证。

关键词(KeyWords)： 周边孔间距;空气间隔装药;光面爆破

Abstract:

Keywords:

基金项目(Foundation): 交通部科技项目(2009353342550);; 中央高校基本科研业务费专项资金资助(2010-ZY-TJ-011)

作者(Author): 程康,苏微倩,张桂涛,武金贵

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