刘家峡水电站混凝土建筑物耐久性分析  

Concrete Structures Durability Analysis of Liujiaxia Hydropower Station

作　　者：邢林生[1] 聂广明[1] 

机构地区：[1]国家电力监管委员会大坝安全监察中心,浙江杭州310014

出　　处：《水力发电》2010年第3期39-42,共4页Water Power

摘　　要：刘家峡水电站混凝土主、副坝和溢洪道、泄水道、泄洪洞、排沙洞已运行40余年,对混凝土裂缝、表层碳化、渗漏溶蚀、冻融冻胀、水质侵蚀、混凝土强度和冲磨空蚀等方面的全面检测分析表明,这些混凝土建筑物耐久性较好。指出封闭渗漏入口以提高坝体防渗能力,是防止或减缓渗漏溶蚀、冻融冻胀破坏的有效措施,并应密切关注坝前水沙动态变化趋势,对冲磨空蚀破坏及时进行修补处理,以增强耐久性。The main and auxiliary dam,spillway,discharge conduit and tunnel,and desilting tunnel of Liujiaxia Hydropower Station have operated for 40 years.The analysis on concrete cracks,surface carbonation,infiltration dissolution,freeze-thaw frost heave,water erosion,concrete strength and cavitation show that the durability of concrete structures is better.The closure of seepage entrance to increase dam anti-leakage capacity is an effective measure to prevent or slow the infiltration dissolution and freeze-thaw frost heave,and the timely repair of cavitation damage can also enhance the durability.

关 键 词：混凝土建筑物 耐久性 刘家峡水电站 

分 类 号：TV682.2[水利工程—水利水电工程]