HDPE yog cov yeeb nkab zoo heev. Nws yuav tsum tsis tsuas yog muaj kev lag luam zoo, tab sis kuj muaj cov txiaj ntsig zoo xws li ruaj khov thiab txhim khu kev qha interface, cov khoom siv cuam tshuam, tawg tsis kam, kev laus ua haujlwm, kev tiv thaiv corrosion, thiab lwm yam. Piv nrog cov kav dej ib txwm siv, HDPE kav Lub kaw lus muaj cov kab hauv qab no. ntawm qhov zoo:
(1) Txhim khu kev sib txuas: Cov kab hluav taws xob polyethylene txuas nrog electrothermal fusion, thiab lub zog ntawm kev sib koom ua ke yog siab dua li ntawm cov yeeb nkab lub cev.
(2) Qhov kub tsis zoo cuam tshuam tsis zoo: qhov kub tsis tshua muaj kub ntawm polyethylene yog qhov qis heev, thiab nws tuaj yeem siv tau zoo nyob rau hauv qhov kub thiab txias ntawm -60-60 degree . Thaum lub sij hawm tsim kho nyob rau hauv lub caij ntuj no, vim muaj kev cuam tshuam zoo ntawm cov khoom, cov yeeb nkab yuav tsis nkig.
(3) Kev tiv thaiv zoo rau kev ntxhov siab tawg: HDPE muaj qhov tsis tshua muaj siab, siab shear lub zog thiab kev khawb zoo heev, thiab nws qhov kev tiv thaiv rau ib puag ncig kev ntxhov siab tawg kuj zoo heev.
⑷ Cov tshuaj tiv thaiv corrosion zoo: HDPE kav dej tiv taus corrosion los ntawm ntau yam tshuaj lom neeg, thiab tshuaj lom neeg hauv av yuav tsis ua rau muaj kev puas tsuaj rau cov kav dej. Polyethylene yog ib qho hluav taws xob insulator, yog li nws tsis rot, xeb lossis electrochemically corrode; nws kuj tsis txhawb algal, kab mob los yog fungal loj hlob.
⑸ Kev laus tsis kam, kev ua haujlwm ntev: cov kav dej polyethylene uas muaj 2-2.5 feem pua ntawm cov pa roj carbon dub sib npaug tuaj yeem khaws cia lossis siv sab nraum zoov rau 50 xyoo yam tsis muaj kev puas tsuaj los ntawm hluav taws xob ultraviolet.
⑹ Kev hnav tsis zoo: Kev sib piv ntawm kev hnav tsis kam ntawm HDPE yeeb nkab thiab cov yeeb nkab steel qhia tau hais tias qhov hnav tsis kam ntawm HDPE yeeb nkab yog 4 npaug ntawm cov yeeb nkab steel. Hauv kev thauj mus los ntawm av nkos, piv nrog cov kav hlau, HDPE cov kav dej muaj kev hnav zoo dua, uas txhais tau hais tias HDPE kav dej muaj kev pabcuam ntev dua thiab kev lag luam zoo dua.
⑺ Kev ua tau zoo: Kev hloov pauv ntawm cov kav dej HDPE ua rau nws yooj yim rau khoov, thiab hauv engineering, cov teeb meem tuaj yeem hla los ntawm kev hloov cov kav dej. Nyob rau hauv ntau zaus, qhov yooj ntawm cov kav dej yuav txo tau cov yeeb nkab fittings thiab cov nqi installation.
⑻ Cov dej ntws me me: HDPE yeeb nkab muaj qhov sib luag sab hauv, thiab nws cov Manning coefficient yog 0.009. Qhov kev ua tau zoo thiab cov khoom tsis yog nplaum ua kom ntseeg tau tias HDPE yeeb nkab muaj peev xwm ntau dua li cov kav dej ib txwm muaj, thiab tseem txo qis kev poob siab ntawm cov kav dej thiab lub zog siv dej xa khoom.
⑼ Yooj yim los tuav: HDPE kav yog sib dua li cov kav dej ua vaj tse, cov kav dej galvanized thiab cov kav hlau. Nws yog ib qho yooj yim los tuav thiab nruab, thiab cov neeg ua haujlwm qis thiab cov khoom siv yuav tsum txhais tau hais tias tus nqi ntawm qhov project yog txo qis heev.
⑽ Ntau yam kev tsim kho tshiab: HDPE kav muaj ntau yam kev tsim kho. Ntxiv rau cov txheej txheem excavation, ntau yam tshiab trenchless cov tswv yim xws li cov yeeb nkab jacking, directional drilling, hauv ob sab phlu, Nws yog ib qho kev xaiv zoo rau qee qhov chaw uas tsis tso cai rau kev khawb.
