Cov txheej tiv thaiv sab nrauv yog cov txheej txheem sab nraud ntawm prefabricated ncaj qha - faus insulated kav, ua haujlwm rau cov dej tsis zoo ntawm cov yeeb nkab thiab tiv taus cov khoom sab nraud. Txawm li cas los xij, kev puas tsuaj rau txheej no thaum thauj khoom tsis yog qhov tsis tshua muaj, nrog rau feem ntau cov xwm txheej tshwm sim thaum thauj khoom, tshem tawm, thiab kev thauj mus los.
Teeb meem feem ntau tshwm sim thaum lub sij hawm nqa. Ntawm qee qhov chaw ua haujlwm, steel cables yog siv los ntim cov kav dej ncaj qha; cov txiaj ntsig constriction tuaj yeem tsoo lossis txawm tawg rau txheej txheej tiv thaiv. Cov txheej txheem lifting kom zoo yuav tsum tau siv cov hlua lifting tsawg kawg yog 50 hli dav, kom ruaj khov nqa thiab tso, thiab nruj me ntsis txwv tsis pub rub los yog dov cov kav dej hauv av. Thaum lub tsheb thauj mus los, cov kav dej yuav tsum tau muab khi kom ruaj ntseg; Kev ruaj ntseg cov ntsiab lus yuav tsum tsis txhob nias ncaj qha rau cov txheej tiv thaiv sab nrauv tab sis yuav tsum tau muab cais los ntawm cov ntaub mos muag. Rau kev thauj mus los ntev - deb, kev txhawb nqa kho tau yuav tsum tau ntxiv rau hauv nruab nrab ntawm cov yeeb nkab ntu kom tiv thaiv sagging nyob rau hauv lawv tus kheej qhov hnyav, uas tuaj yeem ua rau cov txheej txheem rwb thaiv tsev tawg.
Kev khaws cia kuj yuav tsum tau ceev faj. Yog tias cov kav dej insulated tau khaws cia sab nraum zoov thaum tuaj txog ntawm qhov chaw, lawv yuav tsum tau nce siab hauv av - feem ntau yuav tsum tau tshem tawm tsawg kawg 150mm ntawm cov yeeb nkab hauv qab thiab hauv av. Cov kwj deg yuav tsum tau tsim nyob ib ncig ntawm qhov chaw cia kom tsis txhob muaj cov dej ntws los ntawm cov yeeb nkab kawg. Waterproof kawg lub kaus mom yuav tsum nyob twj ywm; Yog hais tias lub kaus mom puas los yog ntog, cov dej nag tuaj yeem nkag mus rau hauv cov txheej txheem rwb thaiv tsev. Thaum lub caij ntuj no, cov kav dej insulated yuav tsum tsis txhob muab cia rau sab nraum zoov rau lub sijhawm ntev; Yog hais tias backfilling tsis tuaj yeem ua kom tiav sai vim yog lub sijhawm tsim kho, lub trench yuav tsum tau rov qab ib nrab mus rau theem siab tshaj ntawm cov yeeb nkab.
Yuav tsum tau saib xyuas kom tsis txhob muaj kev cuam tshuam thaum thauj khoom thiab tshem tawm. Cov txheej tiv thaiv sab nrauv yog ua los ntawm polyethylene; thaum nws muaj qee qhov kev cuam tshuam, kev sib tsoo nrog cov khoom ntse tseem tuaj yeem ua rau dents lossis tawg. Cov neeg ua haujlwm yuav tsum xyuas kom ruaj khov, tsis txhob sib tsoo, poob, lossis pov cov kav dej. Thaum lub sijhawm thauj mus los, cov tsheb yuav tsum tau tsav kom zoo- zam tsis txhob nres nres lossis tig ntse- thiab cov kav dej yuav tsum tau kuaj xyuas tsis tu ncua kom muaj kev puas tsuaj sai sai.
Kev tiv thaiv kev puas tsuaj rau cov txheej tiv thaiv sab nrauv tsis yog qhov nyuaj; Qhov tseem ceeb nyob rau hauv kev ua kom zoo ntawm kev nqa, kev ruaj ntseg, thiab cov txheej txheem khaws cia. Cov teeb meem tshwm sim ua ntej cov kav dej faus yog qhov zam tau.