双洞子水电站施工导流设计方案比选

摘要

双洞子水电站位于承德市宽城满族自治县老亮子村瀑河干流上，坝址处河道较窄。在电站拦河坝工程施工组织设计中，根据工程坝址处地形地貌及水文地质资料，结合拦河坝枢纽建筑物的布置特点，对“分期围堰施工导流方案”和“导流洞输水施工导流方案”进行比选。分析对比土石围堰及浆砌石围堰的应用中的不同特点，提出了在较窄河道上修建水利枢纽工程进行施工导流设计的一种方式。%Shuangdongzi Hydropower station is located at Bao River of Laoliangzi village of KuanCheng Manchu county of Chengde City. The dam site is at the narrow part of river. This article analysis the ‘Phasing Cofferdam construction diver-sion scheme’ and ‘Water delivery with diversion tunnel construction diversion scheme’, considering the features of dam site’s topography , hydrogeological and building type during the process of construction design. After comparing the differ-ent charatices of soild/stone cofferdam with stone masonry cofferdam , the articale proposed a construction diversion design concept of hydro construction on narrow river.