In recent years, the double-arch tunnel has been widely used in vehicular tunnel construction, which has new structural style and many other advantages.
近年来，双连拱隧道以其新颖的结构形式和自身的优点被广泛应用于公路隧道的建设中。
By analyzing the mechanical characteristics of the middle-wall, the style of the base of the middle-wall is put forward for the structural stability of the twin-bore connection arch tunnel.
通过对中墙力学特性分析，提出了有利于连拱隧道结构稳定的中墙基底样式。
The large-scale model testing is one of the important methods to research style of structural internal force and stability of surrounding rock in double-arch tunnel.
利用地质力学模型试验方法，对上述两个问题进行了探讨，给出了确定开挖松弛区范围的方法，以及顺层岩质边坡的边坡走向与岩层走向夹角的上限值。
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