Manhole pwm, raws li lub npe qhia, yog cov pwm tshwj xeeb uas siv los tsim cov khoom siv precast manhole. Manholes, raws li cov qauv hauv nroog underground pipeline systems siv rau kev tshuaj xyuas, tu, thiab kev sib txuas ntawm cov kav dej, cuam tshuam ncaj qha rau kev ua haujlwm zoo thiab kev nyab xeeb ntawm cov kav dej. Pwm, raws li qhov xav tau tiag tiag, ua kom zoo thiab qhov loj ntawm lub manhole, kom ntseeg tau tias txhua qhov khoom siv precast haum zoo kawg nkaus, tsim kom muaj kev ruaj khov thiab ruaj khov hauv av.
Structurally, manhole pwm feem ntau muab faib ua ob ntu: puab pwm thiab txheej pwm. Lub puab pwm yog lub luag hauj lwm rau shaping qhov chaw sab hauv ntawm lub manhole, nrog rau qhov tseem ceeb xws li lub manhole ncej thiab chamber. Nws tus qauv tsim yuav tsum xav txog yam tseem ceeb xws li cov kav dej layout thiab qhov chaw tu. Cov pwm sab nrauv yog lub luag haujlwm rau kev tsim cov phab ntsa sab nrauv ntawm lub qhov manhole, yuav tsum muaj lub zog siab thiab nruj kom ntseeg tau tias cov khoom siv precast tsis deform lossis tawg tom qab demolding. Kev sib raug zoo ntawm cov pwm sab hauv thiab sab nrauv kom ntseeg tau tias qhov siab precision thiab zoo ntawm cov khoom siv precast manhole.
Hauv kev tsim kho hauv nroog niaj hnub, manhole pwm muaj ntau yam kev siv. Txawm hais tias nws yog kev tsim kho cov kav dej rau txoj kev tshiab lossis kev kho dua tshiab ntawm cov kav dej laus, cov pwm no yog qhov tseem ceeb. Lawv tsis yog tsuas yog siv los tsim cov khoom siv tshuaj ntsuam xyuas qhov sib npaug thiab cov duab plaub, tab sis kuj tau siv ntau zuj zus los ntawm kev tsim cov khoom tshiab xws li cov khoom siv tsis tu ncua thiab cov ntse soj ntsuam cov qhov dej. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho ntawm lub nroog ntse, ntse soj ntsuam qhov dej, raws li ib qho tseem ceeb ntawm lub nroog Internet ntawm tej yam, integrate sensors, soj ntsuam cov cuab yeej, thiab lwm yam ntse Cheebtsam, enabling tiag tiag - lub sij hawm soj ntsuam ntawm cov yeeb nkab network txoj hauj lwm raws li txoj cai thiab muab cov ntaub ntawv meej kev txhawb nqa rau cov thawj coj hauv nroog.
Lub caij no, nrog rau kev txhim kho tas mus li thiab kev siv hauv nroog hauv av, kev tshuaj xyuas cov pwm zoo kuj tseem txhim kho rau kev ua haujlwm ntau dua thiab kev koom ua ke. Qee qhov kev tsim pwm siab heev tam sim no tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm ntau cov kav dej, ua kom tau txais txiaj ntsig zoo ntawm qhov chaw hauv av. Tsis tas li ntawd, kev tshuaj xyuas cov pwm zoo rau cov xwm txheej tshwj xeeb lossis ib puag ncig yuav tsum tau tsim kho tas li, xws li av qeeg- tiv taus thiab corrosion- cov pwm resistant, kom tau raws li kev tsim kho ntawm cov cheeb tsam sib txawv.
Raws li cov cuab yeej tseem ceeb hauv kev tsim kho kev niaj hnub thiab kev tsim hluav taws xob, kev txhim kho thiab kev nce qib ntawm kev soj ntsuam zoo pwm yog ncaj qha cuam tshuam rau kev txhim kho thiab kev txhim kho hauv nroog. Nrog kev nruam ntej thev naus laus zis thiab kev muaj koob meej ntawm kev tiv thaiv ib puag ncig, peb muaj laj thawj ntseeg tias yav tom ntej manhole pwm yuav ntse dua, ntsuab, thiab muaj ntau yam, ua rau muaj txiaj ntsig ntau dua los tsim kom muaj ib puag ncig zoo thiab zoo nyob hauv nroog.