叶巴滩水电站导流洞布置方案优选研究

基于叶巴滩水电站高拱坝工程地形地质条件、枢纽布置、施工等特点,对其导流洞布置方案进行了优选。通过全面的经济技术分析,对初拟的等断面双洞布置方案、大小导流洞布置方案、单洞布置方案进行比选,并进一步优选导流洞洞径。结果表明,等高程等断面分岸布置的导流洞布置方案较优,为高拱坝导流洞布置方案的设计及优选提供借鉴。

Study on optimization of diversion tunnel layout for construction of Yebatan Hydropower Station

Based on the characteristics，such as the topographic and geological conditions，project layout，construction，etc.，of the high arch dam for Yebatan Hydropower Station，the scheme for the layout of its diversion tunnel is optimized. Through an overall economic and technical analysis，a comparative selection is made among the preliminarily planned schemes，i.e. the layout of an equal-section dual-tunnel，the layout of a large tunnel with small one and the layout of a single tunnel，while the diameter of the diversion tunnel is further optimized. The result shows that the scheme of the layout of equal-elevation and equal-section diversion tunnels arranged on both the banks is more optimal，thus provides a reference for both the design and optimization of the layout scheme for the diversion tunnel of the high arch dam.