Thawj cov khoom xaiv yog galvanized steel yeeb nkab. Nws yuav raug ua tiav raws li peb qhov ua ntej - txiav txim siab yuav tsum tau muaj thiab ntau. Feem ntau, qhov ntev ntawm galvanized steel yeeb nkab yuav tsum tsis pub tsawg tshaj 2.5 meters. Yog tias cov kav dej steel yuav tsum tau tsav mus rau hauv av, lawv yuav tsum tau ua tiav rau hauv ib qho tshwj xeeb raws li cov av hauv peb lub hauv paus kom ntseeg tau tias kev txhim kho kom zoo. Lawv feem ntau yog txiav ntawm lub kaum sab xis, lossis, txhawm rau tiv thaiv cov yeeb nkab ntawm tilting thaum tsav tsheb, lawv tuaj yeem ua tiav rau hauv lub tiaj tus, taw tes.
Qhov thib ob xaiv cov khoom siv yog lub kaum sab xis steel. Galvanized lub kaum sab xis steel feem ntau yog siv, nrog rau qhov tshwj xeeb ntawm 25mm × 4mm. Qhov ntev ntawm lub kaum sab xis steel yuav tsum tsis pub tsawg tshaj 2.5 meters. Thaum lub sij hawm fabrication, ib kawg ntawm lub kaum sab xis steel yuav tsum tau ua tiav rau hauv ib tug taw tes, feem ntau yog beveling.
Thib peb, peb yuav tsum ntsuas thiab kos cov kab hauv av raws li peb cov duab kos thiab kev teeb tsa. Lub hauv paus pit nrog qhov tob ntawm 0.8 mus rau 1 meter yuav tsum tau khawb rau ntawm kab no, thiab qhov dav ntawm lub qhov dej feem ntau yog 0.5 meters. Sab saum toj ntawm lub trench yuav tsum dav me ntsis, thiab tej pob zeb hauv qab yuav tsum tau muab ntxuav tawm.
Yuav ua li cas rau nruab Grounding Electrodes
Kev Siv Lub Sijhawm Dav Dav: Tom qab khawb lub trench, cov av electrode thiab galvanized ca hlau yuav tsum tau muab ntsia tam sim ntawd kom tsis txhob trench vau.
Ua ntej, muab lub kaum sab xis hlau los yog galvanized steel yeeb nkab rau ntawm kab nruab nrab ntawm lub trench thiab tsav nws mus rau hauv av. Feem ntau, siv tes rauj. Ib txhais tes tuav lub grounding electrode thaum lwm tus neeg siv lub sledgehammer ntaus rau saum cov av electrode, tsav nws mus rau hauv av. Txhawm rau tiv thaiv kev khoov cov yeeb nkab steel lossis lub kaum sab xis hlau, lub hau tuaj yeem muab ntxiv thiab muab tso rau saum cov av electrode. Rau lub kaum sab xis steel grounding, lub kaum sab xis luv steel, kwv yees li 10mm nyob rau hauv ntev, tuaj yeem welded rau sab nraud ntawm lub kaum sab xis hauv av.
Thaum tsav tsheb cov khoom siv hluav taws xob hauv av, feem ntau siv rauj tes. Lub rauj yuav tsum nyob ruaj khov, tawm tsam qhov nruab nrab ntawm cov av electrode, tsis txhob muaj qhov sib txawv. Nws tseem yuav tsum tau khaws cia rau hauv av. Kev tsav tsheb yuav tsum nres thaum sab saum toj ntawm lub hauv av electrode yog 600mm los ntawm hauv av.