三峡工程运行初期，上游引航道通航水流条 件受水库调度等因素的影响变得更加复杂。针对隔流堤漫顶后上游引航道内通航水流条件的 变化，通过水工模型及自航船模对上游的航道通航水流条件进行了试验研究。试验成果表明 ：在通航条件下，在引航道内与口门区的水力学参数均能满足设计要求，船模船队航行上下 行均较顺畅。

In the early period in operation of TGP, the navigation conditions in upstream approach channel of TGP lock will become more complicated because of the reservoir impoundment. When the reservoir water level is higher than the top of dividing dike, the navigation conditions change. According to this change, the navigation conditions in upstream approach channel have been studied by the hydraulic model test and remote - controlled ship model test. The study results show that in the navigation period the hydraulic parameters can meet the requirements of design in the entrance region and the approach channel, and the barge - tow model can navigate smoothly.