摘要
龙江下桥水电站拦河拱坝处在背斜轴部,河床岩石破碎,抗冲能力低,厂坝之间相距近,用此前传统单坎式水垫塘,因消能效率低,不利坝基坝肩安全,也不能为电站尾水渠提供良好水力条件。作者重点叙述“三坎式水垫塘”产生的背景、依据与效果;介绍水垫塘结构设计要点与三年来泄洪消能工初期运行情况。
The arch dam of Xiaqiao Hydropower Station in Longjiang River is located in axial region of anticline where there are crashed rocks at the river bed. As the dam has a low erosion-resisting capacity and is adjacent to the plant, the traditional single-ridge plunge pool with a low energy dissipation efficiency can neither ensure the safety of dam foundation and abutment nor provide sound hydraulic conditions for the tailrace of the power sta- tion. The background, reference and effect of three-ridge plunge pool are presented in details together with the design gist of plunge pool structure and the preliminary operating status of flood discharging energy dissipation over the Past three vears.
出处
《红水河》
2007年第2期1-6,共6页
Hongshui River
关键词
拱坝
消能防冲
冲击式消力池
三坎式水垫塘
下桥水电站
arch dam
energy dissipation & erosion protection
impulse type stilling pool
three-ridge plungepool
Xiaqiao Hydropower Station