At last the thesis draw the conclusion of reasonable construction technology in given surrounding rock and its needed support parameters 最后，总结全文，提出了在不同的地质条件下，连拱公路隧道的合理施工方法及其要求的相应支护结构参数。
Due to the special relief in narrow mountainous zone , as well as the high cost of and the difficulty in applying separate tunnel line , twin - arch tunnel is adopted 在山区狭窄地带等特殊地形条件下,采用分离式隧道线路较为困难且造价高昂,于是产生了双连拱隧道形式。
The failure feature of multiple - arch tunnel within cracked surrounding rocks is get and a conclusion that the weak location is the crown and the center partition is drawn 通过连拱隧道的破坏试验，揭示了连拱破碎围岩隧道的破坏特征，得出破碎围岩连拱隧道最薄弱的位置为拱顶和中隔墙的结论。
Based on the numerical simulation , it can be concluded that the three heading construction method with the tunnel close to the mountain tunneled first should be chosen in the construction of the multi - arch loess tunnel 计算结果表明对于偏压黄土连拱随道应采用先开挖靠山一侧的侧壁导洞法进行施工。
The building mass is structured by a setback in the fa ? ade as well as large scale slits , which cut horizontally at the arcade ' s side entrances and vertically at the tower entrances 大尺度切入建筑的单体元素（水平方向为购物中心旁门的连拱廊，垂直方向则为高塔入口）与立面的退进强调了建筑的形态结构。
When constructing senior highways in china , the project of twin - bore tunnel is often adopted in special geologic and topography districts in order to get better technological and economical purpose 我国在高等级公路的建设中，在特殊地质及地形条件的地区，为获得良好的技术经济效果，大量选择了连拱隧道方案。
In the advanced technology countries such as japanese and europe countries , there is more experience that we can make for in twin - bore tunnel design and construction because of the long theory of twin - bore tunnel construction 日本及欧美等公路隧道修建技术发达的国家，连拱隧道的出现的历史较我国要长，已有相当的设计施工经验。
The middle wall of a double - linked - arch tunnel is the key component of the structure ; it also has a great influence on waterproof and drainage of the tunnel , so it is very important to select the proper from of the middle wall 摘要双连拱隧道的中墙是结构受力的关键构件，又对隧道防排水有较大影响，因此，合理选用中墙形式至关重要。
