The Cabrera Tunnel in northeast Spain was bored out and ready to accommodate the railway technology that will serve as a connection between Valencia and Madrid in just 14 months. A Herrenkencht double shield tunnel boring machine (TBM) S-373 broke through on the project's second tunnel on Sept. 25 - five months ahead of schedule. The Herrenknecht TBM has a diameter of 9.69 m (32.7 ft) and bored as fast as 106 m/day (347 ftpd) on the two 6 km (19,685 ft) railway tunnels. The planned overall construction time was cut by 25 percent. In November 2007, three months after the construction began on the first tunnel the TBM arrived. With a top performance of 83.2 m/ day (272 ftpd), the S-373 TBM was optimally designed for the geology of the tunnel.
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机译：西班牙东北部的卡布雷拉隧道（Cabrera Tunnel）很无聊，并准备容纳仅在14个月内就可以将巴伦西亚和马德里连接起来的铁路技术。一台Herrenkencht双盾隧道掘进机（TBM）S-373于9月25日突破了该项目的第二条隧道，比原计划提前了五个月。海瑞克TBM的直径为9.69 m（32.7 ft），在两条6 km（19,685 ft）的铁路隧道上钻孔速度高达106 m / day（347 ftpd）。计划的总体施工时间减少了25％。在第一条隧道上开始施工三个月后，TBM于2007年11月到达。 S-373 TBM的最高性能为每天83.2 m /天（272 ftpd），是为隧道地质学而优化设计的。
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