溢洪道泄槽基础排水设计新思路

溢洪道泄槽基础排水设计新思路第42卷第3期2016年3月水力发电溘洪道被槽基础排水设计新愿路：。对原设计方案进行了优化，与原方案相比’溢洪道泄槽基础jj}水设计优化方案因地制宜充分利用已有爆破开挖体NewIdeasontheofFoundationDrainageSchemeofSpillwayChuteWANGDangzai，WUXiaoyu，LIUZhi，WANGXiaoan，LIUChao(1．PowerChinaChengduEngineeringCorporationLimited，Chengdu610072，Sichuan，China；2．ChinaRenewableEnergyEngineeringInstitute，Beijing100120，China)Abstract：BasedonthelayoutofhydraulicstructuresandthegeologicalconditionsofspillwayfoundationofHuangjinpingHydropowerStation，thefoundationdrainageschemeofspillwaychutewithaseriesoftiltdrainageditchesaredesigned．Duringprojectconstruction，theoriginaldesignschemeisoptimizedbasedontherockunloadingstateanddevelopedfissuresbeingrevealedinactualexcavationofchutefoundationandafterlearnedexperiencesandlessonsfromotherprojectsComparingwithoriginaldesign，scheme，theoptimizedschemeismoreadaptedtolocalconditions．Theoptimizedschememakesafulluseofblasting—excavatedditches，inwhich，themasonryisfirstlyusedtoformtwosidebanksofditch，thenthegraveliscoveredonthebottomofditcha