岷江犍为航电枢纽下引航道口门区通航条件研究

岷江犍为枢纽下引航道口门区及下游连接段河床左高右低,口门区通航水流条件十分复杂。通过整体模型和船模试验,提出了岷江犍为航电枢纽下引航道口门区通航条件的改善措施。研究表明,扩大下游开挖范围、适当保留原始河床、合理调整泄洪(冲沙)闸的开启方式等措施对改善下引航道口门区通航条件是有效的。

Navigational conditions of entrance area of downstream approach channel in Qianwei navigation-power junction on the Minjiang river

The riverbed of entrance area of downstream approach channel and downstream connection in the Qianwei hydro-junction is high on the left and low on the right,and the flow condition at the entrance area is very complicated.Based on the analysis of the test of Qianwei hydro-junction model and ship model,we propose the measures for improving navigational conditions of entrance area of downstream approach channel in the Qianwei navigation-power junction on the Minjiang River.The test result shows that it’s effective to expand the downstream excavation scope,retain the original riverbed properly and adjust the open manners of the flood discharge(scouring sluice) gate reasonably.