岷江龙溪口航电枢纽施工期通航问题试验研究

Test study on navigation in construction period of Longxikou navigation-power junction on Min river

岷江龙溪口航电枢纽是一座以航运为主、航电结合的大(2)型综合利用水利枢纽工程。该工程施工期通航条件的好坏,将直接关系到岷江乐山至宜宾段航道能否满足大件船舶安全畅通的运输要求,意义重大。根据龙溪口航电枢纽工程施工导流模型试验成果,分析了各施工导流期的通航水流条件,并针对施工通航存在的问题特别是二、三期围堰区段流速超标、流态较差、通航流量较低等相关问题,提出了改善施工期通航水流条件、提高通航流量的综合性工程措施,较好地解决了本枢纽工程施工期的通航问题,其研究成果可作为类似工程借鉴和参考。

The Longxikou navigation-power junction on Mm river 1s a comprenenslve nyctro-juncuon ot navigation combining with hydropower. Because of the importance to Min river navigation, the flow condition during the construction period of Longxikou power station will be directly concerned if Min river navigation channel can meet the transport requirements of the large ship or not. Based on the hydraulic model test, the navigation water condition in each construction period is studied. In some cofferdam sections of the second and the third period of diversion, the condition of navigation flow is very poor. To solve these problems, some comprehensive measures, which improve the navigation flow conditions in the construction period, are proposed. The research result may serve as reference for similar engineering.