水库开敞式溢洪道建筑物结构优化设计

The Structure Optimization Design Calculation of Reservoir Open Spillway Building

针对水库溢洪道工程区基岩强风化深度大、岩质较软、不均匀沉降等问题,经现场踏勘并根据SL253-2000等规范标准要求,综合考虑大坝枢纽整体布置、工程占地和投资经济效益等因素,优选右岸开敞式自由溢流方案。经溢洪道布置方案的优化调整,并结合泄流能力、泄槽水面线和消能防冲等,对溢洪道细部结构进行了详细计算分析,论证成果表明:各种荷载组合工况下,开敞式溢洪道的泄流能力和底流消能均较好,能够满足规范要求,具有较高安全可靠性和技术经济性。

Aiming at the problems of strong weathering depth in bedrock,soft rock and uneven settlement,combining the site reconnaissance data and the standard of SL253—2000,the open- type free overflow on right bank spillway scheme has been optimal chosen by composite considering the dam overall layout,the project occupied land area and the investment economic efficiency and other factors.After doing the multiple optimal adjustment,the discharge capacity,discharge tank water surface line and energy dissipation and other calculation and analysis has been done,the demonstration results showed that design scheme with better discharge capacity and underflow energy dissipation has high security,reliability, technical and economy which can meet the standards requirements.