主线隧道与引道隧道交叉接点扩幅技术

Width Expanding Technology at the Junction of Shield Tunnel and Approach Tunnel

随着城市交通的发展,隧道建设逐渐增多,如何合理地设计、施工隧道匝道显得尤为重要。以日本隧道为例,介绍盾构主线隧道与引道隧道交叉接点的扩幅技术。日本的盾构隧道分合流区域的扩幅采用矿山法施工,就新奥法是否适合此工程进行了详细分析。

With the development of the urban traffic,more and more tunnels need to be constructed. How to have a rational design and construction of the tunnel ramp becomes especially important. Taking Japanese tunnels for example,this paper focuses on the design and construction of width expanding technology at the junction of shield tunnel and approach tunnel. In Japan,mine tunneling method is used for width expanding at diverge area of shield tunnel. The author analyzes in detail whether the new Austrian tunneling method is suited for this engineering.