1) rock mass grading
围岩等级数
1.
The quantitative relation between rock mass grading and the consumption of cutter used is proposed.
在此基础上,提出围岩等级数的概念,得出不同的等级数与其相应的耗刀量之间的定量关系。
2) Wall rock classification
围岩等级判别
4) Grade Ⅵ surrounding rock
Ⅵ级围岩
1.
YQ9 on LuoZhan Railway,and the technical specification of large pipe shed construction,the Paper briefly analyzes and summarizes the construction technique of large and long pipe shed that penetrates through the Grade Ⅵ surrounding rock,which provides reference for similar works.
文章结合洛湛铁路YQ9标清水隧道出口大管棚工程实例,并根据大管棚施工技术规范,简要分析和总结了长大管棚在Ⅵ级围岩中的施工技术,为同类施工提供参考。
5) surrounding rock
Ⅴ级围岩
1.
Construction of multi-arch tunnel at the V-grade surrounding rock with pilot method;
连拱隧道Ⅴ级围岩导洞施工实践
6) surrounding rock at all levels
各级围岩
1.
Exploration of balancing profit rate of output value for construction of tunnel surrounding rock at all levels;
均衡隧道各级围岩施工产值利润率的探讨
补充资料：等比级数
1.数学用语。也称几何级数。从第二项始﹐以下任一项与前一项的比恒等的级数﹐如1+2+4+8+……。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条