本文着重探讨了官厅水库这座在多沙河道上具有分支库区的、水库末端位于两条支流汇合处上游的典型水库淤积问题。该水库运用30年来,泥沙问题突出表现为支流河口形成拦门沙、淤积末端上延和输水洞被淤堵等。文中还讨论了流域人类活动对入库水沙和淤积的影响,并对今后研究方向和治理措施提出建议。 This article focuses on the typical reservoir deposition in the Guanting Reservoir, a branch reservoir area on the Dousha River, which is located at the junction of the two tributaries at the end of the reservoir. Over the past 30 years since the reservoir was used, silt problems have been manifested mainly by the formation of sand barges at tributaries estuaries, deposition of silt ends and silting of water supply holes. The article also discusses the impact of human activities in the basin on sediment storage and sedimentation, and puts forward suggestions on future research directions and measures.