在多沙河流上修建水利枢纽,需要研究的问题很多。底孔门前泥沙淤积及其对闸门启闭力的影响就是其中一个重要问题。本文仅就三门峡水利枢纽改建以来的部份实测资料,探讨泥沙淤积对底孔闸门启门力的影响,并且提出一个估算的方法。供在多沙河流上进行水工布置时选择闸门启闭机容量作参考。 There are many problems that need to be researched in the construction of a water conservancy hub on the stream of the Dousha River. Sediment sedimentation in front of the bottom hole and its impact on the gate opening and closing force is one of the important issues. This article only on the Sanmenxia water conservancy project since the reconstruction of some of the measured data to explore the impact of sediment deposition on the bottom gate gate opening force, and put forward an estimation method. It is used as a reference for selecting the capacity of gate hoist for the hydraulic layout on the Dousha River.