1) parenthetic pilot tunnel
弧形导坑
1.
Taking the breakthrough construction of each working face of Hanguguan Tunnel of the passenger special line on Zhengzhou-Xi’an Railway as the example, this paper sums up the main points of the breakthrough among different excavation methods such as CRD, and parenthetic pilot tunnel, etc.
以郑西铁路客运专线函谷关隧道各工作面贯通施工为例,总结出CRD、弧形导坑等不同开挖方法间的贯通要点,指出该工法符合大断面黄土隧道施工安全、快速的要求,特别当黄土隧道断面大于160 m2时更为有效。
2) Arch heading method
弧形导坑法
3) arc pilot tunnel excavation
弧形导坑开挖
4) ringlike drift heading method
环形导坑法
1.
This paper probes into the ringlike drift heading method for multidrop tunnels with preformed core soil, introduces the construction flow sheet, the construction methods and construction control key points, and puts forward some measures for the quality and safety of the construction.
探讨了多线站场隧道预留核心土环形导坑法,介绍了施工流程图、施工方法及施工控制要点,提出了施工质量措施与施工安全措施。
6) cyclonic precipitator
弧形导向板
1.
In this paper, the cyclonic precipitator with arc board that guiding the gas direction was studied by experimental methods.
利用实验方法研究了可以降低旋风除尘器阻力损失的弧形导向板技术,并对实验结果进行了分析,找到了弧形导向板的最佳尺寸。
补充资料：弧形
1.半圆形(包括大半圆形和小半圆形)。
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