硬質(zhì)土質(zhì)大口徑長輸管道沉管下溝施工方法研究

1、solidgraspofimplement.Belowimplementthegoodspiritofthemeetingthefourpoints.Toquicklystartthedeployment.ThecountyunitstotothemeetingtoitactquicklyseriouslycommunicateconferencespiritespeciallysensitiveSecretaryoftheimptan

2、tspeechcontenttounifytheirthinkingactiontothecentralprovincialcountydecisionmakingarrangementsenhancethedevelopmentofeducationofideologicalconsciousnessconsciousactionlearning.Eachunittocombineactualcarefulplanningpayclo

3、seattentiontostudyfmulateimplementationplanstimelyonthe“twostudiesa“l(fā)earningteachingarrangementstoensurethatlearningstartingpointstarthighstardtocarryoutthehighqualityadvance.Tocarefullyganizedimplemented.Adheretothe“l(fā)ea

4、rning“isthefoundation“do“isthekeystrengthenproblemientedstrictlyfromasolidgraspoflearningteachingganizationimplementationpromotetasksimplemented.Toregularnmallearningeducationasthemainstartingpointfocusingonthedistinctio

5、nbetweentheacteristicsofdifferenttypesofPartyganizationtheactualneedsofthedifferentgroupsofPartymemberstopromotelearningeducationsystemimplementationstrengthenguidancefocusonprecisemeasurespoliciesencouragegrassrootsexpl

6、ationinnovationconstantlyimprovethelearningeffect.Toclearspecificresponsibilities.Partycommittees(party)tograspthelearningeducationasaleadingtaskofthepartybuildsthejobtocatchearnestlyfulfilltheresponsibilitysubjectofPart

7、ybuildingcarefulplanningarrangementscarefullyganizedimplementedsolidpropulsion.Partycommittees(party)ismainlyresponsiblefthecomradestoeffectivelyassumetheresponsibilityasthefirstresponsiblepersonpersonallyresponsibilityi

8、mproper“balldispensers“thespecificwkoftestingtheeffectivenessoflearningeducationeffectthecatchinplacetoensurethatseetheeffectiveness.Fourtocodinatearrangementstoimplement.Tocarryoutthelearningpurposeofeducationispromotew

9、kcentertodevelopitmustbecarefullystudiedthinkdeeplyaboutlearningrelationshipofeducationthewkofthecentercodinatearrangementsfthecountyofthefocusofthewksmoothlytoinspiretheeducationofPartymemberscadresdoentrepreneurialenth

10、usiasmtransfmationfthestrongpowertopromoteeconomicsocialdevelopmentacrossboostthecountyeconomysocialsoundrapiddevelopment!Inaccdancewiththerequirementsofthemunicipalprefecturalstraighteachunittown(Park)village(community)

11、thebranch(Branch)“twostudiesdo“studyeducationwkconferencetoonApril28heldrecentlycompletedtoimplementtheconferencespiritthetimesCountyspecialeducationcodinationgroupProvidetrainingtheintroductionofaXXinXXcityXXspecialchil

12、drensRehabilitationCenterCityFederationofthedisabledallsectsofthecommunityconcernsupptin2013Decemberwasestablishedwiththepurposeof“rehabilitationhappywarmapieceof“rehabilitationpurposesfthecityshearingimpairmentautismmen

13、talretardationlimbotherspecialchildrentoprovidehighqualityconvenientefficientrehabilitationservicesisasetofeducationalrehabilitationrehabilitationexerciseinonecomprehensiverehabilitationservices.Thecentersinceitsestablis

14、hmentadheringtotherehabilitationeffectasthemainstartingpointthefullimplementationofprofessionalrehabilitationservicepersonnelconstantlyenhancetherehabilitationserviceability2yearsfatotalof36childrenwithspecialneedschildr

15、enKangComplexservicesincludingsixspecialchildrenafterrehabilitationtrainingwereinvolvedindinarykindergartenselementaryschoolsenrolled.Atpresentinthecenteroftheacceptrehabilitationtrainingfchildrenwithspecial22oneof4child

16、renwithmentalretardationchildrenwithhearingdisability9childrenwithphysicaldisabilities9.IntheMunicipalFederationthesocialfromallwalksoflifecaresupptweJiangsuProvincetherehabilitationofthedisabledbodyspecificationofconstr

17、uctionstardsinaccdancewithgraduallymakethecentertothedistinctivecomprehensivefunctionmeperfectprofessionalrehabilitationganizationstodevelopinthedirectionofinthedevelopmentprocesswealsoencounteredadifficultbutthroughtheu

18、nremittingefftsofallemployeesinthecenterintherehabilitationeffectrehabilitationserviceabilitytherehabilitationservicelevelpromotionbythegoodsocialeffectwhichismainlyreflectedinthefollowingfouraspects:rehabilitationinstit

19、utionstoregulateconstruction.Rehabilitationcentermustbeinaccdancewiththehardwarepersonnelservicesrehabilitationrehabilitationassessmentconstructionstardizationconstructionasthecenterisaprivatenonprofitganizationinthehard

20、wareconstructioninvestmenthasgreatdifficulty.TherefewepromptlycityFIMITICcommunicationmunicipalCDPFleadershipintheunderstingoftheactualsituationofcenterofrehabilitationtrainingvenuesequipmentgavestrongsuppt.Atthesametime

21、wehavealsosentprofessionalrehabilitationteachersparticipatedintheprovincialspecialchildrensrehabilitationprofessionaltrainingclassletthemcontinuouslybroadentheconceptofrehabilitationthelearnedknowledgetopracticalwkgradua

22、llyperfectingtherehabilitationeducationLearningqualityenhancetheabilityofrehabilitationservices.childrentofullyenjoythenearbyahyrehabilitationservices.Foundinthepresenceofhearingdisdersinchildrenmustbetimelytowearhearing

23、aidsrehabilitationtraininginourcitylastyearthroughtherehabilitationassessmentofhearingimpairedchildrenSunWangyanin2012begantoaccept硬質(zhì)土質(zhì)大口徑長輸管道沉管下溝硬質(zhì)土質(zhì)大口徑長輸管道沉管下溝施工方法研究施工方法研究張繼民張繼民劉杰楊帆摘要：本文研究論證了硬質(zhì)土質(zhì)大口徑長輸管道沉管下溝施工方法的可行性，對(duì)該施

24、工方法進(jìn)行了闡述和總結(jié)，同時(shí)針對(duì)沙漠地帶、水網(wǎng)地帶沉管下溝施工方法做了比較。通過在迪那2天然氣外輸管道工程的現(xiàn)場應(yīng)用，給整個(gè)工程帶來了積極的影響，相比傳統(tǒng)的下溝施工，有可縮短工期、節(jié)約造價(jià)等優(yōu)點(diǎn)。在硬質(zhì)土質(zhì)大口徑長輸管道沉管下溝施工中是一種極有推廣價(jià)值的工藝。關(guān)鍵詞：關(guān)鍵詞：硬質(zhì)土質(zhì)長輸管道沉管下溝新疆油建南疆公司新疆油建南疆公司二0000八年十二月八年十二月solidgraspofimplement.Belowimplementthe

25、goodspiritofthemeetingthefourpoints.Toquicklystartthedeployment.ThecountyunitstotothemeetingtoitactquicklyseriouslycommunicateconferencespiritespeciallysensitiveSecretaryoftheimptantspeechcontenttounifytheirthinkingactio

26、ntothecentralprovincialcountydecisionmakingarrangementsenhancethedevelopmentofeducationofideologicalconsciousnessconsciousactionlearning.Eachunittocombineactualcarefulplanningpaycloseattentiontostudyfmulateimplementation

27、planstimelyonthe“twostudiesa“l(fā)earningteachingarrangementstoensurethatlearningstartingpointstarthighstardtocarryoutthehighqualityadvance.Tocarefullyganizedimplemented.Adheretothe“l(fā)earning“isthefoundation“do“isthekeystreng

28、thenproblemientedstrictlyfromasolidgraspoflearningteachingganizationimplementationpromotetasksimplemented.Toregularnmallearningeducationasthemainstartingpointfocusingonthedistinctionbetweentheacteristicsofdifferenttypeso

29、fPartyganizationtheactualneedsofthedifferentgroupsofPartymemberstopromotelearningeducationsystemimplementationstrengthenguidancefocusonprecisemeasurespoliciesencouragegrassrootsexplationinnovationconstantlyimprovethelear

30、ningeffect.Toclearspecificresponsibilities.Partycommittees(party)tograspthelearningeducationasaleadingtaskofthepartybuildsthejobtocatchearnestlyfulfilltheresponsibilitysubjectofPartybuildingcarefulplanningarrangementscar

31、efullyganizedimplementedsolidpropulsion.Partycommittees(party)ismainlyresponsiblefthecomradestoeffectivelyassumetheresponsibilityasthefirstresponsiblepersonpersonallyresponsibilityimproper“balldispensers“thespecificwkoft

32、estingtheeffectivenessoflearningeducationeffectthecatchinplacetoensurethatseetheeffectiveness.Fourtocodinatearrangementstoimplement.Tocarryoutthelearningpurposeofeducationispromotewkcentertodevelopitmustbecarefullystudie

33、dthinkdeeplyaboutlearningrelationshipofeducationthewkofthecentercodinatearrangementsfthecountyofthefocusofthewksmoothlytoinspiretheeducationofPartymemberscadresdoentrepreneurialenthusiasmtransfmationfthestrongpowertoprom

34、oteeconomicsocialdevelopmentacrossboostthecountyeconomysocialsoundrapiddevelopment!Inaccdancewiththerequirementsofthemunicipalprefecturalstraighteachunittown(Park)village(community)thebranch(Branch)“twostudiesdo“studyedu

35、cationwkconferencetoonApril28heldrecentlycompletedtoimplementtheconferencespiritthetimesCountyspecialeducationcodinationgroupProvidetrainingtheintroductionofaXXinXXcityXXspecialchildrensRehabilitationCenterCityFederation

36、ofthedisabledallsectsofthecommunityconcernsupptin2013Decemberwasestablishedwiththepurposeof“rehabilitationhappywarmapieceof“rehabilitationpurposesfthecityshearingimpairmentautismmentalretardationlimbotherspecialchildrent

37、oprovidehighqualityconvenientefficientrehabilitationservicesisasetofeducationalrehabilitationrehabilitationexerciseinonecomprehensiverehabilitationservices.Thecentersinceitsestablishmentadheringtotherehabilitationeffecta

38、sthemainstartingpointthefullimplementationofprofessionalrehabilitationservicepersonnelconstantlyenhancetherehabilitationserviceability2yearsfatotalof36childrenwithspecialneedschildrenKangComplexservicesincludingsixspecia

39、lchildrenafterrehabilitationtrainingwereinvolvedindinarykindergartenselementaryschoolsenrolled.Atpresentinthecenteroftheacceptrehabilitationtrainingfchildrenwithspecial22oneof4childrenwithmentalretardationchildrenwithhea

40、ringdisability9childrenwithphysicaldisabilities9.IntheMunicipalFederationthesocialfromallwalksoflifecaresupptweJiangsuProvincetherehabilitationofthedisabledbodyspecificationofconstructionstardsinaccdancewithgraduallymake

41、thecentertothedistinctivecomprehensivefunctionmeperfectprofessionalrehabilitationganizationstodevelopinthedirectionofinthedevelopmentprocesswealsoencounteredadifficultbutthroughtheunremittingefftsofallemployeesinthecente

42、rintherehabilitationeffectrehabilitationserviceabilitytherehabilitationservicelevelpromotionbythegoodsocialeffectwhichismainlyreflectedinthefollowingfouraspects:rehabilitationinstitutionstoregulateconstruction.Rehabilita

43、tioncentermustbeinaccdancewiththehardwarepersonnelservicesrehabilitationrehabilitationassessmentconstructionstardizationconstructionasthecenterisaprivatenonprofitganizationinthehardwareconstructioninvestmenthasgreatdiffi

44、culty.TherefewepromptlycityFIMITICcommunicationmunicipalCDPFleadershipintheunderstingoftheactualsituationofcenterofrehabilitationtrainingvenuesequipmentgavestrongsuppt.Atthesametimewehavealsosentprofessionalrehabilitatio

45、nteachersparticipatedintheprovincialspecialchildrensrehabilitationprofessionaltrainingclassletthemcontinuouslybroadentheconceptofrehabilitationthelearnedknowledgetopracticalwkgraduallyperfectingtherehabilitationeducation

46、Learningqualityenhancetheabilityofrehabilitationservices.childrentofullyenjoythenearbyahyrehabilitationservices.Foundinthepresenceofhearingdisdersinchildrenmustbetimelytowearhearingaidsrehabilitationtraininginourcitylast

47、yearthroughtherehabilitationassessmentofhearingimpairedchildrenSunWangyanin2012begantoaccept2根據(jù)焊接工藝評(píng)定報(bào)告和管道管材各項(xiàng)物理化學(xué)參數(shù)，具體論證了此施工方法的可行性和施工中焊口安全性，避免了以往單憑經(jīng)驗(yàn)、無明確理論基礎(chǔ)支持的施工方法，具科學(xué)性。2）對(duì)硬塑狀土質(zhì)地帶形成管溝沉管與沙漠地帶、水網(wǎng)地帶沉管下溝作了明確比較。①在沙漠及大面積水網(wǎng)地帶

48、曾經(jīng)使用過沉管法下溝施工以上兩種土質(zhì)松軟，一邊挖一邊塌方，最終形成形管溝，沉管下溝過程中管道母線始終與管溝壁接觸，不存在明顯懸空段，形管溝坡度大，容易控制管道緩慢勻速下沉。早在2002年西氣東輸一線25標(biāo)段施工時(shí)，即采用過沉管法通過了江蘇省鎮(zhèn)江和常州兩市大面積水網(wǎng)地區(qū)；在2005年西氣東輸陜京二線靖榆段延長線施工時(shí)，也采用了沉管法通過毛烏素沙漠段。②本工程中，首次在“土層稍濕、硬塑狀的巖土工程分級(jí)為Ⅱ級(jí)”地段使用沉管法施工。該地帶土質(zhì)形

49、成管溝特點(diǎn)為管溝壁不完全塌方，機(jī)械開挖形成梯形微小坡度開口管溝，管溝壁對(duì)管道產(chǎn)生阻力較小，并且管道存在懸空段，管道沉管過程中不易控制管道緩慢勻速下沉，管道容易突然下滑出現(xiàn)扁口、焊口斷裂破壞或焊口內(nèi)傷，造成事故或形成隱患，通過控制每次下溝長度小于9.5m，控制了管道緩慢勻速下沉，保證了管道下溝的安全性。1.2工法特點(diǎn)如下：工法特點(diǎn)如下：優(yōu)點(diǎn)：1）具有工效高，方便管理的特點(diǎn)①設(shè)備使用：由于沉管法下溝施工，因此每機(jī)組減少了3臺(tái)70t吊管機(jī)及其

50、能源消耗，減少吊管機(jī)下溝人員接送值班車，減少吊管機(jī)長途拉運(yùn)調(diào)遷設(shè)備，及設(shè)備日常維護(hù)保養(yǎng)費(fèi)用。同時(shí)管溝土質(zhì)情況決定不利于重型設(shè)備溝邊行走，能夠避免因?yàn)楣軠纤蕉斐傻娘L(fēng)險(xiǎn)，提高了施工的可行性。②人力資源：每機(jī)組減少了吊管機(jī)操作人員及指揮、司索、維修人員，具有人員需求量少，降低成本，易于管理的特點(diǎn)。③工期質(zhì)量：工序銜接緊湊，解決了挖溝慢，下溝快，設(shè)備使用率小的矛盾。2）具有安全性高，安全設(shè)施投入少的特點(diǎn)：由于沉管施工減少吊裝作業(yè)，對(duì)員工的作