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    Okuzuzwayo kwimibhobho yentsimbi eyi-A252 yeBanga lesi-3 eSetyenziselwe kuMbhobho ohambisa amanzi amdaka kunye nePetroleum Pipeline

    Izibonelelo ze-A252 zeBanga lesi-3 zeMibhobho yeNtsimbi eSetyenziselwe uMjelo oGutyulwayo kunye noKwakha uMbhobho wePetroleum oFanelekileyo
    • Okuzuzwayo kwimibhobho yentsimbi eyi-A252 yeBanga lesi-3 eSetyenziselwe kuMbhobho ohambisa amanzi amdaka kunye nePetroleum Pipeline
    • Okuzuzwayo kwimibhobho yentsimbi eyi-A252 yeBanga lesi-3 eSetyenziselwe kuMbhobho ohambisa amanzi amdaka kunye nePetroleum Pipeline

    Inkcazelo emfutshane:

    Umbhobho wensimbi we-A252 weBanga lesi-3, owaziwa nangokuthiumbhobho we-arc ojikelezayo, lukhetho oludumileyo lokwakhiwa kombhobho welindle kunye neoyile.Le mibhobho yenzelwe ukumelana neemeko ezinzima kwaye ibonelela ngeenzuzo ezininzi kwezi zicelo.


    Iinkcukacha zeMveliso

    Iithegi zeMveliso

    Enye yeenzuzo eziphambili zeA252 Grade 3 umbhobho yentsimbi ngamandla ayo akhethekileyo kunye nokuqina.Le mibhobho yenziwe ngentsimbi ekumgangatho ophezulu kwaye ixhathisa ngokugqithiseleyo ukubola, ukugqoka kunye nefuthe.Oku kuzenza zibe zezilungele ukusetyenziswa kwimibhobho yogutyulo apho zinokuchanabeka kwizinto ezidlekayo kunye nemithwalo enzima.Ukongezelela, amandla abo kunye nokuqina kwawo kubenza bafaneleke ukusetyenziswa ekwakhiweni kwemibhobho yeoli, njengoko kufuneka baxhathise uxinzelelo oluphezulu kunye nokutshintsha kweemeko zokusingqongileyo.

    Umgangatho  IBanga leNsimbi Amalungu eMichiza (%) Ipropati ye-Tensile UCharpy(V inotshi)

    Uvavanyo lweMpembelelo
    c Mn p s Si Okunye Unikeze Amandla(Mpa) Tensile strength(Mpa) (L0=5.65 √ S0)(umzuzu wokuTlula umlinganiselo (%)
    max max max max max imiz max imiz max D ≤ 168.33mm D ＞ 168.3mm
      

     

    I-GB/T3091 -2008

    		 Q215A ≤ 0.15 0.25 ＜ 1.20 0.045 0.050 0.35   

    Ukongeza i-NbVTi ngokuhambelana ne-GB/T1591-94

    		 215   335   15 > 31  
    Q215B ≤ 0.15 0.25-0.55 0.045 0.045 0.035 215 335 15 > 31
    Q235A ≤ 0.22 0.30 ＜ 0.65 0.045 0.050 0.035 235 375 15 >26
    Q235B ≤ 0.20 0.30 ≤ 1.80 0.045 0.045 0.035 235 375 15 >26
    Q295A 0.16 0.80-1.50 0.045 0.045 0.55 295 390 13 >23
    Q295B 0.16 0.80-1.50 0.045 0.040 0.55 295 390 13 >23
    Q345A 0.20 1.00-1.60 0.045 0.045 0.55 345 510 13 >21
    Q345B 0.20 1.00-1.60 0.045 0.040 0.55 345 510 13 >21
      

     

     

    GB/

    T9711-

    2011

    (PSL1)

    		 L175 0.21 0.60 0.030 0.030     

     

    Ngokuzithandela ukongeza enye yezinto ze-NbVTi okanye nayiphi na indibaniselwano yazo

    		 175   310   27  Inye okanye ezimbini zesalathisi sokuqina

    amandla empembelelo kunye nendawo yokucheba inokukhethwa.Kuba

    L555, bona umgangatho.
    L210 0.22 0.90 0.030 0.030 210 335 25
    L245 0.26 1.20 0.030 0.030 245 415 21
    L290 0.26 1.30 0.030 0.030 290 415 21
    L320 0.26 1.40 0.030 0.030 320 435 20
    L360 0.26 1.40 0.030 0.030 360 460 19
    L390 0.26 1.40 0.030 0.030 390 390 18
    L415 0.26 1.40 0.030 0.030 415 520 17
    L450 0.26 1.45 0.030 0.030 450 535 17
    L485 0.26 1.65 0.030 0.030 485 570 16
      

     

     

    API 5L (PSL 1)

    		 A25 0.21 0.60 0.030 0.030    Ngentsimbi yebakala B,

    Nb + V ≤ 0,03%;

    yentsimbi ≥ ibakala B,ukhetho lokudibanisa i-Nb okanye i-V okanye yabo

    indibaniselwano, kunye Nb+V+Ti ≤ 0.15%

    		 172   310    (L0=50.8mm) ukuba

    ibalwe ngokwale fomyula ilandelayo:

    e=1944·A0 .2/U0 .0

    A: Ummandla wesampulu kwi-mm2 U: Ubuncinci bokuqina obuchaziweyo kwi-Mpa

    		  Akukho nanye okanye nayiphi na

    okanye zombini

    ifuthe

    amandla kunye

    ukucheba

    indawo iyafuneka njengekhrayitheriya yokuqina.
    A 0.22 0.90 0.030 0.030   207 331
    B 0.26 1.20 0.030 0.030   241 414
    X42 0.26 1.30 0.030 0.030   290 414
    X46 0.26 1.40 0.030 0.030   317 434
    X52 0.26 1.40 0.030 0.030   359 455
    X56 0.26 1.40 0.030 0.030   386 490
    X60 0.26 1.40 0.030 0.030   414 517
    X65 0.26 1.45 0.030 0.030   448 531
    X70 0.26 1.65 0.030 0.030   483 565

    Enye inzuzo ye-A252 yeBanga le-3 lombhobho wensimbi kukuguquguquka kwayo.Le mibhobho ifumaneka kwiindidi ezahlukeneyo zobukhulu kunye nobukhulu, okwenza ukuba zilungele izicelo ezahlukeneyo.Nokuba ukwakha encinciumgca wogutyulookanye umbhobho we-oyile omkhulu, i-A252 yeBanga lesi-3 lombhobho wensimbi unokwenziwa lula ukuhlangabezana neemfuno ezithile zeprojekthi.Ukongezelela, le mibhobho ingenziwaimibhobho yolwakhiwo yecandelo elimngxuma, ukwandisa ngokubhekele phaya ukusetyenziswa kwazo kumsebenzi wokwakha.

    Ukongeza kumandla kunye nokuguquguquka kwayo, i-A252 yeBanga lesi-3 ipayipi yensimbi nayo iyaziwa ngeendleko zayo.Le mibhobho ilula ukuyifaka kwaye ifuna ukulungiswa okuncinci, ukunciphisa iindleko zeprojekthi.Ukongeza, ubomi babo benkonzo ende kunye nokumelana nomhlwa baqinisekisa ukuba babonelela ngembuyekezo eyomeleleyo kutyalo-mali lokuhambisa amanzi amdaka kunyeumbhobho weoyile umgcaiiprojekthi zokwakha.

    Umbhobho we-SSAW

    Enye inzuzo ebalulekileyo ye-A252 yeBanga lesi-3 lombhobho wensimbi kukuhambelana kwayo kunye neendlela ezahlukeneyo zokwakha.Le mibhobho ingafakelwa kusetyenziswa iindlela zokwembiwa kwemveli okanye ubuchule obungenamijelo obufana nokomba othe tye, ukugqobhoza kwemibhobho okanye i-micro-tunneling.Oku kuguquguquka kuvumela ukufakela okusebenzayo kunye nokungabizi kakhulu kuluhlu lweendawo ezicela umngeni, kubandakanywa neendawo zasezidolophini, iindawo zamanzi kunye neendawo ezinobume bendalo.

    Lilonke, umbhobho wentsimbi weBanga lesi-3 we-A252 ubonelela ngeendlela ezahlukeneyo zoncedo kumjelo ophantsi komhlaba ohambisa amanzi amdaka kunye nokwakhiwa kwemibhobho yepetroleum.Amandla abo, ukuqina, ukuguquguquka kunye nokusebenza kakuhle kweendleko kubenza balungele ezi zicelo zinzima.Ingaba isetyenziswe kwi-sewer okanye ukwakhiwa kwemibhobho yeoli, le mibhobho ibonelela ngokusebenza okuthembekileyo kunye nexabiso lexesha elide.Ngenxa yoko, bahlala besisisombululo sokhetho lweenjineli kunye neekontraka ezijonge izisombululo zemibhobho ezomeleleyo nezithembekileyo.

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