2) arch of spanning strata
跨层拱
1.
The mechanical model of arch of spanning strata is established;and the inner forces calculation of ar.
研究结果表明,开采中能够在工作面上方形成与之平行的跨越煤层的“跨层拱”结构。
3) arch ratio
拱跨比
4) bay of arch roof
拱顶跨度
5) triple-span arch culvert
三跨拱涵
1.
Projects of excavation constructions of triple-span arch culvert are simulated using nonlinear finitee element analysis program.
利用非线性有限元程序,对三跨拱涵开挖施工方案进行模拟。
6) single-arch large span
单拱大跨
1.
Combined with the station of Chongwenmen of 5th line of the underground in Peking,it introduces the technology and program of building single-arch large span station using the methods of bury shallow and dig invisible of the method of digging in center,making piles in the holes and the method of CRD assistant.
结合北京地铁五号线崇文门车站,介绍了该站采用中洞法、洞柱法及CRD辅助工法等浅埋暗挖法修建浅埋单拱大跨车站的工艺和方案,经现场监测,其地表沉降及结构沉降均满足安全性要求,且该工程在国内尚属少见,为类似工程积累了经验。
补充资料：层层加码
1.谓逐级增加任务和逐级提出各种要求等。
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