节理裂隙围岩小直径深竖井爆破开挖Blasting Excavation of Small Diameter Deep Shaft in Surrounding Rock Area with Joint Fissure
罗光财,李昂波,汪庆桃,王标,刘期龙
摘要(Abstract)：
节理裂隙发育围岩地区小直径、深竖井的爆破开挖,很容易造成塌方和超挖,所以其设计与施工一直是关注重点。结合长沙市森林防火监测站项目80 m深的小直径竖井工程,针对小断面、深竖井的工程特点以及表层围岩石风化严重的地质条件,采取小断面反井爆破、分次扩挖,及地表层正向爆破等施工技术,对保证竖井开挖质量及安全措施进行了详细的分析。结果表明工程设计与施工工艺切实可行。
关键词(KeyWords)： 节理裂隙发育围岩;深竖井;爆破设计;施工工艺
基金项目(Foundation):
作者(Author): 罗光财,李昂波,汪庆桃,王标,刘期龙
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