大斗水库泄洪消能建筑物布置与结构计算

Layout and Structural Calculation of Flood Discharge and Energy Dissipation Buildings in Dadou Reservoir

溢洪道作为重要的防洪调洪建筑物,合理确定泄水建筑物结构参数和控制泄洪流量对保障水库安全稳定运行尤为重要。针对大斗水库V形横向谷特点,本文结合混凝土面板堆石坝枢纽布置方案,根据《溢洪道设计规范》(SL 253—2018),对溢洪道整体布置和结构体形的设计方案展开详细计算和论证分析。结果表明,在大坝右侧垭口处布置岸边不设闸开敞式溢洪道的方案合理,结构参数和泄流能力均满足相关规范要求,各工况下消能和防冲刷效果良好。

Spillway is an important flood control and flood regulation structure,it is particularly important to reason⁃ably determine the structural parameters of the discharge structure and control the discharge flow to ensure the safe and stable operation of the reservoir.In view of the characteristics of the V-shaped horizontal valley of Dadou Reser⁃voir,this paper combined the layout plan of the concrete face rockfill dam,and according to the"Specification for Spillway Design"(SL 253—2018),carried out detailed calculation and demonstration analysis of the overall layout and structural shape of the spillway.The results show that,the plan of arranging an open spillway without gates on the bank in the right pass of the dam is reasonable,the structural parameters and discharge capacity meet the require⁃ments of relevant specifications,and the energy dissipation and anti-scouring effects are good under various working conditions.