张茅隧道1号斜井进正洞挑顶施工技术

Ripping construction for 1# oblique well of Zhangmao tunnel which leading to positive curve

通过介绍张茅隧道1号斜井进入正洞的施工方法,总结出软弱围岩段斜井安全进入正洞的一种施工方法,为类似工程及客运专线大断面黄土隧道施工提供一定的借鉴。

Through introducing construction method for 9 # oblique well of Zhangmao tunnel which leading to positive curve, it summarizes construction method for weak adjacent rock oblique well leading to positive curve, which can be referred for similar engineering and large section loess tunnel.