navigation tunnel meaning in English

通航隧洞

According to the design code for filling and emptying system of shiplocks and the layout characteristics of the second line of qililong sea route on fuchun river and the upstream navigation tunnel , the type of the filling and emptying system of shiplocks is determined , the area of the culvert transect at the valve is calculated , and the layout type and key size of the filling and emptying system are recommended
摘要根据富春江七里泷航道第二通道工程船闸及其上游通航隧道总体布置的特点，按照《船闸输水系统设计规范》的要求，确定了船闸的输水系统型式，并计算了输水阀门处廊道断面的面积；推荐了通航船闸输水系统的布置及关键尺寸。