武汉天兴洲洲头整治工程河段河床演变分析

Analysis on River Evolution near the Training Work at the Head of Tianxing Bar

根据历年河道实测资料,对武汉天兴洲洲头整治工程河段历史、近期河道演变以及工程河段河床演变发展趋势进行了分析。结果表明,龟山至阳逻河段,汉口边滩淤积发展,并已移至天兴洲北汊口门附近;滩槽相对稳定;天兴洲汊道自20世纪70年代完成主支汊交替转化后,两汊分流比总体上保持稳定;工程实施前后深泓线的走向没有明显的改变。

Based on the field data, the historical and recent evolution and developing trend of the reach near the training work at the head of Tianxing Bar are analysized in this paper. It is shown that the river regime of the reach from Guishan to Yangluo is stable, though the Hankou shoal developed and moves to the mouth of the north branch of Tianxing Bar for the sediment deposition. The diversion ratioes of the two branches have kept stable since 1970＇s. The oscillation of the thalweg isn＇t obvious before and after the building of the trainging work.