Niaj hnub no, peb cov kws tshaj lij pab pawg yuav qhia rau koj txog cov txheej txheem kev teeb tsa thiab cov cai ntawm cov kav dejoptical fiber ntau cables.
1. Hauv cov kav dej cement, cov kav hlau lossis cov kav dej yas uas muaj qhov aperture ntawm 90mm thiab siab dua, peb lossis ntau dua cov kav dej yuav tsum tau muab tso rau hauv ib lub sijhawm ntawm ob (tes) qhov raws li kev tsim qauv.
2. Cov kav dej me me yuav tsum tsis txhob muab tso rau ntawm tus txiv neej (tes) qhov, thiab cov kav dej yuav tsum tsis txhob muaj cov pob qij txha hauv cov kav dej.
3. Lub protruding ntev ntawm lub sub-pipe nyob rau hauv tib neeg (tes) qhov yog feem ntau 200-400mm;qhov tsis siv cov yeeb nkab qhov thiab cov yeeb nkab txuas hauv theem ntawm qhov project no yuav tsum tau thaiv lub sijhawm raws li qhov tsim nyog.
4. Thaum lub optical cable yog threaded nyob rau hauv ntau yam kav dej, lub puab txoj kab uas hla ntawm cov yeeb nkab yuav tsum tsis txhob yuav tsawg tshaj li 1.5 npaug ntawm lub cheeb txoj kab uas hla ntawm lub optical cable.
5. Kev tuav ntawm cov khoom siv kho qhov muag yuav tsum tsis pub tshaj 1000m.Lub airflow tso ntawm optical cable feem ntau tsis tshaj 2000m nyob rau hauv ib qho kev taw qhia.
6. Cov kab hluav taws xob kho qhov muag tom qab tso yuav tsum ncaj, tsis muaj kev sib tw, tsis muaj kev hla, tsis muaj khawb thiab puas.Tom qab tso, nws yuav tsum tau kho raws li tus qauv tsim.
7. Lub optical cable yuav tsum tsis txhob khoov nyob rau hauv 150mm ntawm lub qhov hluav taws xob qhov hluav taws xob.
8. Lub sub-tube los yog silicon core tube nyob ntawm qhov kho qhov muag cable yuav tsum tau thaiv nrog ib tug tshwj xeeb plug.
9. Qhov sib tshooj ntev tshwj tseg rau kev tso cov kab hluav taws xob kho qhov muag ntawm ob sab ntawm cov kab hluav taws xob kho qhov muag yuav tsum ua tau raws li cov qauv tsim.Tom qab kev sib txuas ua tiav, qhov ntev ntawm qhov kho qhov muag yuav tsum tau coiled thiab kho kom zoo nyob rau hauv lub manhole raws li tus qauv tsim.
10. Raws li cov kev xav tau ntawm cov kav dej kho qhov muag cable, qhov nruab nrab nkag qhov yog tshwj tseg raws li tus qauv tsim.