在1991年与1992年期间,关于计划将阿姆斯特丹、斯希普霍尔机场和鹿特丹与布鲁塞尔和巴黎连接起来的荷兰高速铁路线有几个可供选择的线路方案。其中一个方案是在鹿特丹南部的H线路方案,它将跨过荷兰的主要水道,即旧马斯河和荷兰水道。初步研究时,调查了用何种技术可实施跨河方案,什么情况将使某种选择方案不可能实施。对施工费用作了估算,并调查研究了用两孔单轨隧道还是用一孔双轨隧道对施工尺寸和施工费用的形响。 Between 1991 and 1992, there were several alternative routes planned for the Dutch high-speed rail line linking Amsterdam, Schiphol Airport and Rotterdam with Brussels and Paris. One of the options is the H-Line program in southern Rotterdam, which will cross the main waterways in the Netherlands, the Old Maas and the Dutch Waterways. During the initial study, it was investigated which technology was used to implement the river crossing program and what would have made it impossible to implement a selection option. The cost of construction was estimated and the impact of construction on the dimensions and construction costs of a two-lane monorail tunnel or a two-lane tunnel was investigated.