摘要宁波地下储气库(LPG)工程,采用挪威施工方法(NMT),依照Q系统进行工程地质工作,该施工法提倡利用喷钢纤维混凝土作为洞室永久支护手段,使得支护工作比网喷法更为有效和节省时间。洞室在开挖过程中遵循了动态设计(design as your drive)的原则。支护类型的最终选择决定于每一个开挖循环后对洞室围岩分类的Q值的确定、岩石力学分析和工程地质评价。
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