Ib lub casing yuav tsum tau muab tso rau qhov twg cov raj xa mus rau hauv pem teb los yog phab ntsa; tsis muaj pob qij txha yuav tsum tau sab laug ntawm hauv pem teb thiab phab ntsa, yog tias muaj, nws yuav tsum tau muab tso rau hauv qhov chaw ci kom yooj yim txij nkawm thiab hloov; Lub casing yuav tsum tau muab tso rau hauv ib chav nrog dej nquag, thiab sab sauv yuav tsum yog 30 meters saum toj no hauv av. -50mm, qhov qis qis yog yaug nrog lub tso, lub thickness ntawm cov hniav txheej yuav tsum tau txiav txim siab thaum txhim kho lub casing; qhov sib txawv ntawm lub casing thiab cov yeeb nkab dej tuaj yeem sau nrog asphalt roj hemp xaim kom tsis txhob muaj dej lwg ntws mus rau hauv cov txheej txheem qis.
