191问答库 > 请教一个问题围岩分级与围岩类别有什么区别?

请教一个问题围岩分级与围岩类别有什么区别?

2025-03-16 05:38:27
推荐回答（1个）
回答1：

铁路上最早用围岩分类，现在用围岩分级（印象中是TB10012-2001年规范中修改的），有些行业规范、规程还没有完全改过来仍用围岩分类（如地铁规范正在修编）。围岩分级从I级至VI级围岩性质越来越差，分类正好相反。目前的I级围岩对应原来的VI类围岩，简单换算就是用7减分级便可换算成分类，同样分类可换为分级。

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