杨仁树,车玉龙,孙强,杨国梁,白晓生,廖正彪

• 1:中国矿业大学(北京)力学与建筑工程学院
• 2:中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室
• 3:天津水泥工业设计研究院有限公司

摘要(Abstract)：

为了提高光面爆破效果,以青岛地铁为工程背景,进行了周边孔不同装药结构的光面爆破试验研究。理论分析了连续装药和间隔装药2种装药结构爆破对孔壁的压力情况,从切缝药包爆破裂纹的成缝机理上,解释了切缝药包定向断裂控制爆破技术改善光面爆破效果的原因。通过现场应用得出:当进尺为1 m且岩性较好时,采用连续装药结构,岩性较差时,采用切缝药包连续装药结构;当进尺在1～2 m且岩性较好时,采用轴向空气间隔装药结构,岩性较差时,采用切缝药包轴向空气间隔装药。施工中取得了理想的爆破效果,施工经验被青岛其它2条地铁线及相关隧道所吸纳。

关键词(KeyWords)： 装药结构;爆炸压力;切缝药包;光面爆破

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(51134025);国家自然科学基金面上项目(51274203)

作者(Author): 杨仁树,车玉龙,孙强,杨国梁,白晓生,廖正彪

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