Tunnelconstruction

隧道施工

任務三施工供水與排水——施工供水Task3Constructionwatersupplyanddrainage——Constructionwatersupply項目九風水電作業和施工通風Project9Wind,waterandpoweroperationandconstructionventilation2知識目標通過本任務的學習，學生應掌握隧道供水方式；了解水質要求。。KnowledgeobjectivesThroughthestudyofthistask,studentsshouldmasterthemodeoftunnelwatersupply;Understandwaterqualityrequirements.學習目標

Learningobjectives3能力目標通過本任務的學習，學生應具備選擇合理供水方式的能力。。AbilityobjectivesThroughthestudyofthistask,studentsshouldhavetheabilitytochooseareasonablewayofwatersupply.學習目標

Learningobjectives隧道施工供水

Watersupplyfortunnelconstruction1.水質要求凡無臭味﹑不含有害礦物質的潔凈天然水都可作施工用水，但仍應做好水質化驗工作，以便心中有數。生活用水更要求新鮮清潔。1.WaterqualityrequirementsAllcleannaturalwaterwithoutodorandharmfulmineralscanbeusedasconstructionwater,butthewaterqualitytestshouldstillbedonetoknow.Domesticwaterneedstobefreshandclean.2.水源：（1）山上自流水或泉水；（2）河水；（3）鉆井取水。3.供水方式：有高位自然水源時，可建水池蓄水利用；無條件建高位水池的隧道，則采用增壓泵供水。隧道施工供水

Watersupplyfortunnelconstruction2.Watersource:(1)Runningwaterorspringwateronthemountain;(2)Riverwater;(3)Drillingwater.3.Watersupplymode:Whenthereisahigh-levelnaturalwatersource,apoolcanbebuiltforwaterstorageandutilization;Boosterpumpshallbeusedforwatersupplyinthetunnelwithunconditionalhigh-levelpool.4.蓄水池要求⑴構造：開口水池，一般采用石砌。4.Reservoirrequirements(1)structure:openpool,generallymadeofstone.隧道施工供水

Watersupplyfortunnelconstruction4.蓄水池要求⑵位置：到工作面是水壓不小于0.3MPa：（折合為水柱高h=30m）H≥1.2（h+h損）⑶容積：（50~100m3）一晝夜用水量的1/2~1/10隧道施工供水

Watersupplyfortunnelconstruction4.Reservoirrequirements(2)location:Thewaterpressuretotheworkingfaceisnotlessthan0.3MPa:(convertedintowatercolumnheighth=30m)H≥1.2(H+Hloss)(3)volume:(50~100m3)1/2~1/10ofwaterconsumptioninadayandnight4.PipelineinstallationPipediameter:thediameterofwaterpipeshallbecalculatedanddeterminedaccordingtothemaximumwatersupply,pipelinelength,numberofelbows,gatevalveandotherconditions;Thepipelayingshallensurethequalityandnowaterleakage;Maingatevalveshallbeinstalledonthemainoutputpipelineofwaterpipe,andsubgatevalveshallbeinstalledevery300m~500monthemainpipeline;Thepipelineinthetunnelshallbelaidontheoppositesideofthecableandwire,whichshallnothinderthetransportation.Whenitisonthesamesideastheditch,itshallnotaffectthedrainage;Antifreezingmeasuresshallbetakenincoldareas.隧道施工供水

Watersupplyfortunnelconstruction4.管路的安裝管徑大小：水管的直徑應根據最大供水量、管路長度、彎頭數量，閘閥等條件計算確定；管道鋪設