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南宁地铁1号线清-动区间主要以密实的圆砾地层为主,盾构在该地层中掘进需要对刀盘、主驱动等进行必要的特殊设计,以达到盾构顺利开挖、减少开仓次数和有效控制地面沉降的目的。本文主要介绍清-动区间盾构刀盘及主驱动的设计。1刀盘设计1.1刀盘面板设计本工程刀盘采用面板加辐条式刀盘,刀盘开挖直径6 280mm,刀盘的开口率为25%(较以往
The clear-moving interval of Nanning Metro Line 1 mainly consists of dense round gravel stratum. The shield tunneling in this stratum requires the special design necessary for the cutter head and main drive, so as to achieve smooth shield excavation and reduce opening The number of bins and the purpose of controlling land subsidence effectively. This article mainly introduces the design of the cutter head and the main drive of the clear-moving section shield. 1 cutter design 1.1 cutter panel design The cutter head panel and spoke type cutterhead, cutter diameter 6 280mm, cutterhead opening rate of 25% (compared with the past