The results show that mechanical behavior of lining structure change evidently when suddenly effluent water happen at inverted arch or foot of wall.
结果表明：突水位置发生在仰拱或墙脚位置时，对衬砌结构的受力影响显著；
2
Trickling water frequently occurs in the outside appearance of biconnected arch tunnels after the secondary lining, influencing their construction quality and operating.
在双连拱隧道施工中，二次衬砌完成后表面往往会出现渗漏水现象，对双连拱隧道施工质量及营运造成影响。
3
Lishi tunnel is the first loess multi-arch tunnel in China. The designs of the tunnel are briefly introduced, including lining structure, prevention drainage treatments and construction process.