乐滩水库引水灌区跨红水河建筑物方案比较

Alternative comparison of a structure across Hongshui River for Letan Reservoir Irrigation Zone Project

跨红水河建筑物是乐滩水库引水灌区二期工程南干渠渠首建筑物,具有输水流量大、跨度大、地质条件复杂等特点。跨河建筑物有渡槽方案和倒虹吸方案可供选择,结合建筑物跨越红水河所处位置的地形地质条件、航运、行洪、水力学、运行管理、工程投资、施工及结构安全等要求,通过分析比选,推荐渡槽方案为乐滩水库引水灌区二期工程南干渠跨红水河建筑物。

The head work of south trunk channel of the 2 nd-stage Letan Reservoir Irrigation Zone Project is a structure across Hongshui River, characterized by high flow, big span and complicated geological conditions. Two alternatives of aqueduct and inverted siphon were compared in respects of topographical and geological conditions, navigation, flood discharging, hydraulics, operation management, cost, construction and structural safety etc. Aqueduct scheme was recommended based on analysis and comparison.