长江万州至长寿河段泥沙淤积特性研究

三峡水库蓄水后,库区河段泥沙淤积较蓄水前发生了较大变化。对三峡库区实测资料及多年库区冲淤变化分析表明:三峡库区的淤积形态与河型有关——弯曲河段和分汊河段淤积较为严重,顺直河段淤积相对较少。对长江万州至长寿河段典型河型进行冲淤分析,为进一步研究提供参考。

On sedimentation in the Yangtze River from Wanzhou to Changshou reach

After impoundment of the three Gorges reservoir, obvious changes took place on river bed evolution of the reach in the reservoir area. Based on an analysis of measured data and scour-and-fill variation for many years, we get to know that sediment deposition geometry relates to the river pattern: deposition at the bend or branch reach is serious while that at the straight reach is lower. The analysis presented on river bed evolution of typical river patterns in the upper Yangtze River from Wanzhou to Changjiang reach provides reference for further studies.