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1、挡水坝毕业设计 篇一:混凝土坝毕业设计 摘要 本次设计内容为潘家口水利枢纽,坝型选择为混凝土重力坝。 重力坝主要有非溢流挡水坝段、溢流表孔坝段、溢流底孔坝段和电站厂房坝段组成。挡水坝段最大断面的坝底高程为122.0m,坝顶高程为227.8m,防浪墙高1.2m,最大坝高为105.8m,属高坝类型。坝顶宽9m,最优断面的上游坝坡坡率为1:0.2,上游折坡点高程为182.0m,下游坝坡坡率为1:0.7,下游折坡点高程214.9m。 溢流坝段布置在主河道中心,止水采用两道紫铜中间加沥青井的形式。坝基防渗处理(主要依据上堵下排的原则),上游帷幕灌浆(两道),下游侧设置排水管。 以
2、非溢流挡水坝段为计算选择断面,进行了抗滑稳定分析和应力分析,分别采用单一安全系数法和可靠度理论法计算法进行计算,最终验算满足抗滑稳定,上游坝踵没有出现拉应力,设计剖面合理可行 设计中认真总结,运用几年来所学的理论知识及专业知识,结合毕业设计的任务进行思考、分析应用,提高了独立思考与独立工作的能力,同时也加强了计算、绘图、编写设计文件、使用规范、手册能力的培养,使我们成为合格的水利人才。 关键词:非溢流坝;细部构造;地基处理 Abstract ThisdesigncontentforthePanjiakouproject,damtypeselectionfortheconcr
3、etegravitydam. Agravitydamaremainlynonoverflowdamsectionofspillwaydam,spillway,bottomholedamandpowerhousedamsectionof.Nonoverflowdamsectionofeachof15meterswide,distributedinthedampowerhousedamsectionends;each16meterswide,disposedneartherightbankmainriverbed,outfitmachine3units;thebottomorific
4、eofeachsectionof22meterswide,arrangedinapowerhouseleftmainriverbed;overflowsectionofeachsegmentwidth18meters,isarrangedinthehousemusicrivermainriverbed. Damsectionofmaximumcrosssectionofthebottomsurfaceelevationof122.0meters,atelevationof227.8meters,1.2metershighwall,thedamheightof105.8meters
5、,isatypeofdam.Crestwidthof9meters,theoptimalsectionoftheupstreamdamsloperateof1:0.2,theupstreamslopeanglepointto182.0meterselevation,downstreamdamsloperateof1:0.7,thedownstreamslopeanglepointelevation214.9m. Maximumsectionofoverflowdamsectionofthebottomsurfaceelevationof1901meters,1978.08mete
6、rsheightofweir,weiruseWEScurvedesign,straightsloperateof1:0.7,reversearcradiusof18meters,thenasalsillelevation1912meters,theupstreamdamsloperateand1:0.2,slopeanglepointelevationof1956meters,theupstreamdamsurfaceandWESsurfaceby1/4ellipticconnected. Treatmentofdamfoundationseepageprevention(mai
7、nlybasedontheprincipleofblockingdrainage),upstreamgroutcurtain(two),adownstreamsidedrainagetube. Nonoverflowdamsectionfortheselectionofcalculationsection,aslidingstabilityanalysisandstressanalysis,respectivelybyshearcalculationmethodan