石洪超,邹新宽,张继春,夏森林

• 1:西南交通大学土木工程学院
• 2:国网青海省电力公司经济技术研究院

摘要(Abstract)：

小净距隧道掘进爆破在施工过程中,爆破产生的振动不可避免地对中隔墙产生扰动和损伤,影响其稳定性。层状围岩小净距隧道对爆破振动强度的控制更加严格。在重庆南涪高速公路鸭江隧道,针对常规掘进爆破和减振掘进爆破技术进行现场试验,根据试验结果得出了层状围岩小净距隧道中隔墙的振动强度分布特征,验证了减振掘进爆破技术中掏槽炮孔采用间隔装药并采取孔内分段毫秒延迟起爆的方法,可以有效地控制爆破振动强度,较常规爆破技术振动强度降低30%以上。

关键词(KeyWords)： 现场试验;爆破振动;小净距隧道;层状围岩

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41272321)

作者(Author): 石洪超,邹新宽,张继春,夏森林

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