2015年6月我国内河在建规模最大的城市道路沉管隧道一江西南昌红谷隧道工程迎来首节管节浮运、沉放。长115m、宽30m、高8.3m、重2.8万t的管节浮运8.65km顺利到达隧址。据悉,红谷隧道施工中设置了亚洲最大的充砂长管袋围堰、亚洲最大的内河异地巨型干坞。隧道过江段1300m长、30m宽,采用沉管法施工,为目前国内内河 In June 2015, the largest urban road under construction in China, the river under construction, a tunnel in Nanchang-Honggu Valley, ushered in the first section of pipe tunneling and sinking. Length 115m, width 30m, height 8.3m, weight 28,000 tons of tube floating 8.65km to reach the tunnel. It is reported that Hong Valley Tunnel construction set up in Asia’s largest sand filled tube bag cofferdam, Asia’s largest inland giant dry dock. Tunnel over the river 1300m long, 30m wide, the use of tube construction method for the current domestic river