南水北调中线工程总干渠沙河南—黄河南禹州至长葛段起点位于兰河涵洞渡槽出口100m处,终点位于长葛和新郑市交界,全长53.7km,其中明渠长52.323km,建筑物长1.377km。沿线共布置各类建筑物99座,其中河渠交叉建筑物5座,渠渠交叉建筑物2座,左岸排水建筑物25座,节制闸2座,退水闸1座,事故闸1座,分水口门4座,公 South of the Middle Route of the South-to-North Water Diversion Project Shahe Nan - Yellow River The starting point of the South Yuzhou to Changge section is located 100 meters from the outlet of the Lanhe Culvert and its terminus is at the junction of Changge and Xinzheng City with a total length of 53.7km, of which the open channel length is 52.323km and the length of the building is 1.377 km. A total of 99 buildings of various types are arranged along the line, including 5 crossings of canal, 2 crossings of canal and canal, 25 drainage buildings on the left bank, 2 control gates, 1 retreat gate, 1 accident gate and water diversion port Door 4, male