这是位于河北廊坊市九州镇南水北调廊涿干渠廊坊段阀门井施工现场。南水北调廊涿干渠全长80公里，廊坊境内长48.8公里，全线采用双排直径2米至2.4米的预应力钢筒混凝土管道输水，最大引水流量11立方米/秒。廊涿干渠是为尽快缓解廊坊市水资源短缺而提前启动的应急供水工程，被视为廊坊的“生命线”工程，工程年底竣工后可每年为廊坊输入优质长江水1.8亿立方米，将从根本上缓解廊坊市区及工程沿线城镇水资源短缺问题。新华社记者 李晓果 摄 It is located in hebei langfang kyushu town south-to-north water diversion gallery zhu main canal langfang period of valve well construction site.The south-to-north water diversion project gallery zhu main canal (80 km),Langfang domestic 48.8 kilometers long,All fronts with double exhaust diameter 2 m to 2.4 m prestressed concrete cylinder pipe water,Maximum water flow and cubic meters/seconds.Gallery zhu main canal is to relieve the shortage of water resources and langfang city as soon as possible in advance of the start the emergency water supply project,Regarded as the langfang"lifeline"engineering,At the end of each year after the completion of project for langfang input of the Yangtze river water quality of 180 million cubic meters,Will fundamentally relieve langfang city and engineering town along the water resource shortage problem.Xinhua news agency reporters LiXiaoGuo perturbation