本文根据某河道型水库可行性研究的系列试验资料和大量原观资料,论述了建库后回水变动区内水流条件的变化而引起的输沙变化,论证了回水变动区末端和上段浅滩上产生的卵石累积性淤积的必然性以及卵石淤积部位,淤积区下推和回水末端上延等问题。最后提出了整治原则及优选蓄水和调度方案的见解。 Based on a series of experimental data and a large amount of original data from a feasibility study of a river-type reservoir, this paper discusses the sediment transport changes caused by the change of water flow conditions in the backwater variation zone after the reservoir was built. On the inevitability of accumulation of gravel on the gravel and silt deposition sites, siltation area down and the back of the extension of the delay and other issues. At last, the author put forward the principle of remediation and the suggestion of optimizing the plan of water storage and regulation.