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由中铁五局电务公司承建的渝怀铁路DH14标电气化接触网工程正线148.89公里,桥隧密集,其中隧道103公里(占正线长度的69.2%),桥梁10.41公里。隧道施工是重点、难点,长大隧道16座,其中武隆隧道(9418m)为本标段最长隧道。隧道内接触网悬挂采用德国西门子公司设计的单支撑腕臂悬挂定位方式,隧道内单支撑腕臂悬挂定位方式是渝怀线采用的新技术,在国内以前的接触网施工中是没有接触过的。
The project of DH14 standard electrified contact network of Yuhuai Railway, constructed by China Railway No. 5 Electricity Company, has a mainline of 148.89 kilometers with densely-packed bridges and tunnels, including 103 km of tunnels (accounting for 69.2% of the length of the mainline) and 10.41 km of bridges. Tunnel construction is the key and difficult point. There are 16 large tunnels, of which Wulong Tunnel (9418m) is the longest tunnel in this section. Catenary suspension within the tunnel is designed by Germany’s Siemens single-arm wrist suspension positioning method, the tunnel single support wrist arm suspension positioning method is a new technology Yuhuai line, in the country before the contact network construction is not touched .