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1摘要施工导流是保护水利水电工程在干涸河床正常施工，控制河水下泄所采取的工程措施。施工导流设计是水利水电枢纽总体设计的重要组成部分，是影响坝址选择、枢纽布置、永久建筑物型式、施工程序和施工进度的重要因素。本设计依据《水利水电工程施工组织设计规范》（SDJ338-89）第二章施工导流的有关规定编写。在对坝址区域的地形、地质资料，水文气象资料分析的基础上通过对堰型、隧洞型的定性分析比较，定出隧洞轴线、堰轴线的位置。由于坝址附近有丰富的料场，并且距坝址较近，交通运输较方便等，综合考虑最终拟建上游为土石坝围堰、下游为土石坝围堰。该工程主要由上下游围堰、导流隧洞等组成。设计确定上游围堰的堰顶高程为450.50m，堰顶宽为5.00m，堰高为40.50m，下游围堰的堰顶高程为427.00m，堰顶宽为3.00m，堰高为17.00m，隧洞底高程为418.00m，隧洞宽为15.00m，隧洞高17.500m，隧洞坡降为0.001，进口长为50.00m，洞身长为500.00m，出口长为50.00m，并采用扩散消能。设计最终成果：说明书一份、计算书一份、设计图纸4张及其他计算附图和附表等。关键词：施工导流、围堰、截流、进度控制、混凝土、土石坝2AbstractTheconstructiondiversionisprotectwaterconservancywaterelectricianthedistancebenormaltostartconstructioninthedriedupriverbed,controltheengineeringmeasureadoptedforleakingriverunderwater.Constructiondiversionadesignistheimportanceofwaterconservancywaterelectricityvitalpointtotaldesigntoconstitutepart,isinfluencethedamaddresschoice,vitalpointdecoration,permanentbuildingpatternandstartconstructiontheimportantfactorofprocedureandconstructionprogress.Thisdesignleadstoflowaccordingto《waterconservancywaterelectriciandistanceconstructionorganizationdesignnorm(SDJ338-89)》chapter2constructionofrelevantstipulatetowrite.Itispassingthequalitativeanalysiscomparisontotheembankmenttype,tunneltypeinthefoundationofhydrologyweatherdataanalysistothegeography,geologydataofthedamaddressdistrict;settlethepositionofthetunnelstalkline,cofferdamstalkline.Becausethedamaddressneighborhoodabundantlyanticipatedafield,andwasnearerapartfromthedamaddress,transportationmoreconvenientetc.,synthesizetoconsidertofinallydrawuptosetuptheupperstreamroundsfortheconcretecofferdam,downstreamtoroundanStraw-soilcofferdam.Theengineeringismainlyvisitedbytopandbottomtoroundacofferdamandleadtoflowtunneletc.toconstitute.Designingmakessurethattheupperstreamroundsthecrestofcofferdamforthe450.50ms;cofferdamcrestbreadthis5.00ms,andthecofferdamis40.50mshigh.Thedownstreamroundsthecofferdamcrestengineeringis427.00ms,cofferdamcrestbreadthis3.00ms,cofferdamis17.00mshigh.TunnelbottomGaoChengis418.00ms,with15.00mswideand17.50mshigh,theTunnelascentdeclinesto0.001,importis50.00mslong,theholeheightisa500.00ms,exportlongis50.00ms,andadopttospreadtoeliminateability.Theachievementsofthedesignareasfollows:directionsofthedesigncalculationsofthedesignandwith4engineeringdrawingsofthedesignaswellasotherscheduleattachedetc...Keyword:ConstructiondiversionRiverclosureConcreteProgressControls3目录1施工条件..............................................................................................................................................11.1工程条件..................................................................................................................................11.1.1对外交通及可利用的场地条件...........................................................................................11.1.2工程建筑物特性及工程量..................................................................................................21.1.3工程施工特点......................................................................................................................21.1.4施工期供水及环保要求......................................................................................................21.1.5主要建材、水电等供应条件...............................................................................................21.1.6工程施工工期......................................................................................................................41.2自然条件..................................................................................................................................41.2.1水文......................................................................................................................................41.2.2地形、地质及气象..............................................................................................................72施工导流............................................................................................................................................102.1导流标准................................................................................................................................102.1.1导流时段............................................................................................................................102.1.2导流标准及流量................................................................................................................102.1.3坝体拦洪度汛标准............................................................................................................102.2导流方式................................................................................................................................102.3导流洞洞径与围堰堰高........................................................................................................102.3.1导流隧洞与围堰................................................................................................................112.3.2施工调洪演算....................................................................................................................122.3.3导流隧洞与围堰工程量........................