西北水电
西北水電
서북수전
NORTHWEST WATER POWER
2014年
2期
25-28
,共4页
平整度%冲蚀破坏%抗冲耐磨%硅粉混凝土%聚脲
平整度%遲蝕破壞%抗遲耐磨%硅粉混凝土%聚脲
평정도%충식파배%항충내마%규분혼응토%취뇨
planeness,scouring failure%scouring resistance and abrasion wearing%silicon-powder concrete%polyurea
通过现场对某水电站工程左岸底孔破坏部位的详细查看和对原设计的研究分析认为因为泄水道设计体型复杂，空化数低，混凝土浇筑不密实和表面不平整所致。采用清除冲蚀破坏范围的松动混凝土至完整、密实的混凝土面，回填浇筑C40W4F200二级配抗冲耐磨硅粉混凝土、在外表面涂刷聚脲材料（SK手刮聚脲（单组分））等措施，对泄水道进行修复。同时也总结了设计经验，为今后泄水建筑设计提供了参考意见。
通過現場對某水電站工程左岸底孔破壞部位的詳細查看和對原設計的研究分析認為因為洩水道設計體型複雜，空化數低，混凝土澆築不密實和錶麵不平整所緻。採用清除遲蝕破壞範圍的鬆動混凝土至完整、密實的混凝土麵，迴填澆築C40W4F200二級配抗遲耐磨硅粉混凝土、在外錶麵塗刷聚脲材料（SK手颳聚脲（單組分））等措施，對洩水道進行脩複。同時也總結瞭設計經驗，為今後洩水建築設計提供瞭參攷意見。
통과현장대모수전참공정좌안저공파배부위적상세사간화대원설계적연구분석인위인위설수도설계체형복잡，공화수저，혼응토요축불밀실화표면불평정소치。채용청제충식파배범위적송동혼응토지완정、밀실적혼응토면，회전요축C40W4F200이급배항충내마규분혼응토、재외표면도쇄취뇨재료（SK수괄취뇨（단조분））등조시，대설수도진행수복。동시야총결료설계경험，위금후설수건축설계제공료삼고의견。
Through the detailed investigation on the failed position of the left bottom outlet and the analysis on its original design of one hydropower station, it concludes that the failure of the bottom outlet is caused by the incompacted concrete placement and uneven concrete surface because the outlet passage is complicated in the outline design and the cavitation number is lower.The failed outlet passage is re-paired by application of the following measures:the incompacted concrete in the failed area by scouring is removed till the integrated and compacted concrete surface.Then the C40W4F200 silicon-powder concrete which is scouring resistance and abrasion wearing is back-filled.Finally, the polyurea material (SK hand-scraped polyurea, single component) is coated on the concrete surface.Meanwhile, les-son is drawn and design experience is enriched, reference for design of outlet structures in the future is provided.
