李继业,张剑兴,何兴贵,赵明生,周桂松,叶海旺

• 1:中交一公局第四工程有限公司
• 2:贵州新联爆破工程集团有限公司
• 3:中国葛洲坝集团易普力股份有限公司
• 4:武汉理工大学资源与环境工程学院

摘要(Abstract)：

为解决隧道掘进过程中存在的爆破效果差、超挖现象凸显、围岩稳定性得不到保证的问题,利用水垫封光面爆破技术,进行参数优化实验。实验结果表明:当底部水袋高度在10～25 cm之间,顶部水袋高度在20～35 cm之间,水袋总高度在30～70 cm之间时,随着底部水袋高度和水袋总高度的增加,半孔率总体逐渐减小,炮孔利用率总体降低,爆破块度呈增大趋势,通风时间先增大后减小。利用优化实验结果对比常规光面爆破进行分析,半孔率提高了8.7%,炮孔平均利用率增大10.1%,通风时间减少8.4 min,进尺增大0.32 m,爆破最大块度减小8 cm,该项技术应用于龙那1号隧道中取得了良好效果。

关键词(KeyWords)： 隧道掘进;水垫封光面爆破;参数优化;水袋高度

Abstract:

Keywords:

基金项目(Foundation): 贵州省爆破工程技术研究中心能力提升平台建设——黔科合高G字(2015)4004;; 2017年创新型领军企业再支持——黔科合成果[2017]4774

作者(Author): 李继业,张剑兴,何兴贵,赵明生,周桂松,叶海旺

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