Kev siv cov kav dej yas
Raws li ib qho tseem ceeb ntawm cov khoom siv hauv tsev, cov kav dej yas tau txais kev pom zoo los ntawm cov neeg siv rau lawv cov kev ua tau zoo, kev huv huv, kev tiv thaiv ib puag ncig, kev siv tsawg thiab lwm yam zoo, feem ntau suav nrog UPVC cov kav dej, UPVC cov kav dej, cov yeeb nkab txhuas yas, polyethylene ( PE) cov yeeb nkab dej, polypropylene PPR cov yeeb nkab dej kub.
Cov kav dej yas yog cov khoom siv tshuaj hauv tsev uas sib xyaw ua ke los ntawm cov cuab yeej siv siab, thiab cov khoom siv tshuaj lom neeg yog cov khoom tsim tshiab thib plaub tom qab cov hlau, ntoo thiab cov cement.Cov kav dej yas yog siv dav hauv kev tsim cov dej hauv tsev thiab cov dej ntws, cov dej hauv nroog thiab cov kav dej thiab cov kav dej vim lawv qhov zoo ntawm cov dej tsis zoo, txuag hluav taws xob, txuag cov khoom siv, kev tiv thaiv ecological, kev ua tiav yooj yim thiab lwm yam, thiab tau dhau los ua lub zog tseem ceeb ntawm kev tsim kho hauv nroog cov yeeb nkab network hauv lub xyoo pua tshiab.
Piv nrog cov kav hlau cam khwb cia, cov kav hlau galvanized, cov kav dej cement thiab lwm cov kav dej, cov kav dej yas muaj qhov zoo ntawm kev txuag hluav taws xob thiab cov khoom txuag, kev tiv thaiv ib puag ncig, lub teeb yuag thiab siab zog, corrosion kuj, du sab hauv phab ntsa tsis muaj scaling, yooj yim siv thiab txij nkawm, kev pab lub neej ntev thiab lwm yam.Lawv tau siv dav hauv kev tsim kho, hauv nroog, kev lag luam thiab kev ua liaj ua teb xws li kev tsim kho dej thiab kev tso dej, hauv nroog thiab cov neeg nyob deb nroog thiab cov dej ntws, cov pa hauv nroog, lub zog thiab kho qhov muag cable sheath, kev lag luam dej xa mus, kev ua liaj ua teb irrigation thiab lwm yam.
Yas yog txawv los ntawm cov khoom siv tsoos.Lub pace ntawm kev vam meej yog sai.Kev tshwm sim tsis tu ncua ntawm cov thev naus laus zis tshiab, cov khoom siv tshiab thiab cov txheej txheem tshiab ua rau qhov zoo ntawm cov kav dej yas ntau dua thiab zoo dua piv nrog cov khoom siv ib txwm muaj.Piv nrog cov yeeb nkab hlau thiab cov cement yeeb nkab, cov yeeb nkab yas muaj lub teeb yuag, uas feem ntau tsuas yog 1/6-1/10 ntawm cov yeeb nkab hlau.Nws muaj kev tiv thaiv corrosion zoo dua, cuam tshuam tsis kam thiab tensile lub zog.Lub puab txheej ntawm cov yeeb nkab yas yog ntau smoother tshaj cam khwb cia hlau yeeb nkab, nrog me me kev sib txhuam coefficient thiab kua kuj.Nws tuaj yeem txo cov dej xa hluav taws xob siv ntau dua 5%.Nws muaj kev txuag hluav taws xob zoo, thiab kev tsim hluav taws xob siv tau raug txo los ntawm 75%.Nws yooj yim rau kev thauj mus los, yooj yim rau nruab, thiab nws lub neej kev pab cuam txog li 30-50 xyoo.Cov kav dej polyethylene tau tsim sai heev nyob rau hauv lub ntiaj teb no, thiab cov teb chaws tsim muaj qhov zoo tshaj plaws hauv kev siv cov kav dej polyethylene hauv kev siv dej thiab roj.Cov kav dej polyethylene tsis yog tsuas yog siv los hloov cov kav hlau ib txwm siv thiab cov kav hlau cam, tab sis kuj los hloov cov kav dej PVC.Qhov laj thawj yog nyob rau hauv kev tsim kho tshiab ntawm cov kav dej polyethylene.Ntawm ib sab, cov khoom siv tau ua tiav zoo.Los ntawm kev txhim kho cov txheej txheem ntawm polyethylene polymerization ntau lawm, lub zog ntawm polyethylene yeeb nkab khoom tshwj xeeb tau yuav luag ob npaug.Ntawm qhov tod tes, muaj kev txhim kho tshiab hauv kev siv thev naus laus zis, xws li thev naus laus zis ntawm kev tso cov kav dej polyethylene los ntawm txoj kev taw qhia drilling yam tsis tau khawb cov yeeb nkab trenches, uas muab kev ua si tag nrho rau qhov zoo ntawm cov kav dej polyethylene, kom cov kav dej ib txwm muaj tsis muaj kev sib tw hauv qee lub sijhawm. haum rau txoj kev no.Kuj tseem muaj ntau yam ntaub ntawv tshiab thiab thev naus laus zis tau kawm, lossis tau kawm thiab sim.Nws yog qhov tseeb tias cov txheej txheem thev naus laus zis ntawm cov kav dej yas hauv 10 xyoo tom ntej yuav txhawb txoj kev loj hlob sai thiab dav siv cov kav dej yas.