穿过重庆长江主航道江底的输气管道日前贯通。这条管道北起江北区溉澜溪塔子山下的长江边,南至南岸区弹子石猫背沱,遂道设计长1062m,由河床底部15m深处岩石层穿过长江,设计断面25m高,25m宽,净断面为625m2。重庆市长江输气管道工程采用江底穿越方式的优点在于:不在空中跨越... The gas pipeline that runs through the main channel of the Yangtze River in Chongqing has been penetrating recently. This pipe runs north from the Changjiang River under the Tailaizi Mountain in Jianglan District and to the south bank of the Nan’an District. The tunnel has a designed length of 1062m and runs through the Yangtze River at a depth of 15m from the bottom of the riverbed. The designed section is 25m high and 25m wide , The net section is 625m2. Chongqing Yangtze River Gas Pipeline project using the advantages of crossing the river bottom is: not across the air ...