1) Three-bench seven-step method
三台阶七步法
2) three-bench seven-step excavation method
三台阶七步开挖法
1.
This paper draws on experience from construction of Fenghuang Ridge Tunnel pilot section in Zhengzhou-Xi\'an Passenger Line for an overview of large section(170 m2) loess tunnel three-bench seven-step excavation method.
结合郑西客运专线凤凰岭隧道试验段施工,对大断面(170 m2)黄土隧道三台阶七步开挖技术进行总结,重点阐述了三台阶七步开挖法的适用条件、施工工艺及具体施工要点。
4) three-step method
三台阶法
1.
Conbining with the 2nd tunnel engineering of shizhi rock , the paper introduced construction technology of three-step method in Ⅳ , Ⅴ class rock in the shallow-buried unsymmetrical loading large section Passenger Dedicated Line tunnel, operating points and the deformation control measures .
文章结合狮公岩二号隧道工程,介绍了Ⅳ、Ⅴ级围岩中浅埋偏压大断面客运专线隧道三台阶法施工工艺,并对操作要点和变形控制措施进行了详细阐述,对同类施工有借鉴作用。
5) short step and seven-step-excavation
台阶七部开挖法
6) bench cutting
台阶分步开挖法
补充资料：三台
三台
santai
三台(saotai)针灸穴名。出《抱犊粼》。牛即.甲穴。绪位于第二、三脚稚棘突间的凹陷处正中，一穴。皮下有斜方肌、葵形肌起始胜及项韧带，棘突间为棘间韧带、棘间肌，有肋间动、静脉和第二脚神经的背侧支分布。老针、圆利针或小宽针向前下方刺入3~5厘米。主治前肢和项脊风湿。(张泉鑫)
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参考词条