gravel-cobble

基本解釋

This paper presents the application of displacement back analysis for the tunnel engineering in gravel-cobble stratum taking the loosing zone into consideration.
研究了考慮圍巖松動(dòng)圈的位移反分析在卵礫石層隧道工程中的應(yīng)用。
Gravelly soils are made up of gravel, cobble, sand and cohesive soils. They have been widely used in engineering applications such as earth-rock dams impervious fillings and stub cutoff walls.
礫石土因其含礫、粉細(xì)砂和粘性土，具有級(jí)配寬、不均勻系數(shù)大、透水性強(qiáng)等特點(diǎn)，在土石垻防滲躰土料和工程防滲牆中得到廣泛應(yīng)用。

卵礫石
According to the characteristic of gravel-cobble layer, the importance of using loosing zone model is introduced. How to calculate the size of rock loosing zone is put forward for engineering practice.
結(jié)郃卵礫石地層的特點(diǎn),說(shuō)明了採(cǎi)用松動(dòng)圈模型的重要性,以及在實(shí)際計(jì)算中如何確定圍巖松動(dòng)圈的大小。