HS2 的奇尔特恩山隧道竣工标志着伦敦-伯明翰高铁线路的一个里程碑。 HS2's Chiltern Hills tunnel completion marks a milestone for London-Birmingham high-speed rail link.
随着塞西莉亚的到来，HS2 奇尔特恩山下最长隧道的第一章竣工。 HS2's first chapter of its longest tunnel under the Chiltern Hills completed with Cecilia's arrival. 这台重达 2,000 吨的机器与两台 Florence 机器一起建造了深达 80 米的双孔隧道，挖掘了 300 万立方米白垩，并安装了 56,000 个预制混凝土隧道管段。 The 2,000-tonne machine, joined by twin Florence, created twin-bore tunnels up to 80 metres deep, excavating three million cubic metres of chalk and installing 56,000 pre-cast concrete tunnel segments each. 这条隧道的竣工标志着伦敦和伯明翰之间高铁连接的一个重要里程碑，减少了出行时间并缓解了西海岸干线的交通状况。 The completion of this tunnel marks a significant milestone for the high-speed rail link between London and Birmingham, reducing trip times and alleviating traffic on the West Coast Mainline.