【摘要】 在实体模型试验的基础上，对官厅水库的泥沙淤积发展和妫水河口拦门沙的清淤疏浚措施进行了研究。为了最大限度地减小疏浚挖槽的回淤量，必须依靠控制上游来沙量、调整入水口门位置、加设防淤堤及提高库水位等手段，而不能通过调整挖泥槽宽度、位置及数量等措施来达到目的。为此，在比较各种疏浚方案效果的情况下，提出了挖泥槽与增设折线型防淤堤相结合的清淤疏浚措施。更多还原

【Abstract】 Tendency of deposition in the Guanting reservoir and dredging on mouth bar of the Guishuihe estuary are analyzed by the data from the model experiments. In order to reduce the re\|deposit volume of the dredged channel, the method must be based on decreasing the oncoming sediment, changing the mouth site, builting the sediment control dam and raising the reservoir level. In this paper, the method combined the “S”shape sediment control dam with the dredged channel has been put forward.更多还原