那吉航运枢纽总平面布置与连接段航道设计研究

那吉航运枢纽是郁江干流规划十梯级开发中的第四级，位于广西右江百色市下游38km处，是右江1000t级国家高等级航道建设的重要组成部分。坝址上游1300m处有一个近90°的大弯道，是影响枢纽布置和船闸引航道口门区与连接段航道通航安全的关键。为此，在枢纽布置设计上采用了半径大、连接段航道较顺应主流的方案，且将引航道口门做成喇叭口形状，保证进闸船舶有足够的视距和足够的航程调整状态进入引航道口门；为解决口门区动水与静水交界区域的流速、流态和回流问题，在分水墙上设16个透水孔，在各级流量下口门区通航水流条件均满足要求，保证了枢纽的通航安全。

Some Researches on the Layout and Connecting Navigation Channel of Naji Navigation Junction

As the 4th stage of 10 cascade development in the development plan of Yujiang trunk steam, Naji navigation junction is 38 km away from the lower reach of Baise City of Youjiang district and is an important component of 1 000-tone national high rank navigation channel construction. There is a 90° bend at 1300 m of the upper reach, which is affecting the navigation arrangement and the safety of shop lock pilot crossing and the connecting navigation channel. Therefore, the arrangement design adopts the mainstream scenario of taking big radius and connecting navigation channels. The pilot crossing navigation gate is bell month in shape to guarantee that the ship coming in have enough visibility distance and navigation adjustment to enter into the pilot crossing; to address the problem of flow, flow pattern and reflux at the entrance area, 16 penetrate water holes have been set up on the diversion wall to ensure the navigation safety while the navigation water flow conditions have been met at all levels of flow rate in the entrance area.