通过模型试验 ,对中闸室施工修改体型即预留凹槽方案进行了论证 ,认为该体型在运用中发生空化的可能性较大 ,不宜采用 ;原设计无凹槽体型方案 ,水流流态较好 ,水流空化数大于初生空化数 ,建议采用。对改建施工中需凿除部分 ,建议采用降低砼标号的方法来减小施工难度。 Through the model test, the program of modifying the shape of the middle sluice chamber, ie, the reserved groove is demonstrated. It is considered that there is a high possibility of the cavitation being cavitated during the operation and should not be adopted. The original design has no groove-type solution and the flow pattern Better, the number of flow cavitation is greater than the number of primary cavitation, it is recommended. Construction of the reconstruction of the need to chisel part, it is recommended to reduce the concrete method to reduce the number of construction difficulties.