Abstract This article elucidates how the launching and arrival shafts of the Rijnlandroute bored tunnel, near Leiden in the Netherlands, are designed and executed. Special attention is given to the behavior of the diaphragm walls during excavation of the shaft and when the tunnel boring machine enters the surrounding soil mass. The global stability of the shafts, subjected to high asymmetric horizontal loads, and an execution methodology ensuring watertight mining through the diaphragm walls are the main points of interest. The adoption of a permanent bell as an alternative to the more commonly used starting plug will be described, as well as the design details of the “soft eye” to ensure a good concreting process of these diaphragm walls.

中文翻译：

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Rijnlandroute 钻孔隧道的竖井设计

摘要 本文阐述了荷兰莱顿附近的 Rijnlandroute 钻孔隧道的起降竖井是如何设计和执行的。特别注意在竖井挖掘期间和隧道掘进机进入周围土体时连续墙的行为。竖井的整体稳定性、承受高不对称水平载荷，以及确保通过连续墙进行水密采矿的执行方法是主要的关注点。将描述采用永久性钟作为更常用的启动塞的替代品，以及“软眼”的设计细节，以确保这些连续墙的良好混凝土浇筑过程。