I-HDD Hole Opener ibhoboza kanjani imigodi nge-rig yokubhoboza ngesikhathi sephrojekthi ye-HDD?

I-Hole Opener esetshenziswa ku-Horizontal Directional Drilling (HDD) “ayibhobi imbobo entsha kusukela ekuqaleni”. Kunalokho, ilandela inqubo yezinyathelo ezintathu: okokuqala ukubhoboza imbobo encane yokuhlola, bese kusetshenziswa i-hole opener ukwandisa imbobo kancane kancane ibe ububanzi obuklanywe kahle, bese ekugcineni idonsa ipayipi emuva. Lobu buchwepheshe obungavubukuli busetshenziswa kabanzi kumaphrojekthi okubeka amapayipi, okugwema ngempumelelo ukulimala komhlabathi, imigwaqo, kanye nezakhiwo.​

1. Bhoboza Umgodi Wokubhoboza Kuqala​

① I-drilling rig ibhoboza umgodi wokuhlola omncane (φ80–200mm) endaweni yokungena ngokwendlela eklanywe ngayo. ② I-drill bit, i-probe, kanye ne-bend sub (1°–2°) kusetshenziselwa ukuqondisa, ukujikeleza kanye nokuqhubekela phambili ngenkathi kubhobozwa. Udaka lusetshenziselwa ukupholisa, ukuthwala izingcezu, kanye nokuvikela udonga lwembobo. ③ Boboza kuze kufike endaweni yokuphuma ukuze kuqedwe ukungena komgodi wokuhlola.​

2. Faka i-Hole Opener esikhundleni se-Pullback Reaming​

Susa i-pilot drill bit ekugcineni kokuphuma bese uyixhuma ku-HDD Hole Opener, bese wenza i-pullback reaming yesinyathelo ngesinyathelo. ① Isakhiwo: Siqukethe umzimba ophakathi, ama-blade/ama-roller cones angashintshwa, kanye nama-nozzles. Sihlukaniswe ngezinhlobo ezintathu: uhlobo lwe-scraper (lwenhlabathi ethambile), uhlobo lwe-roller cone (lwedwala), kanye nohlobo oluhlanganisiwe (lwezakhiwo eziyinkimbinkimbi). ② Isimiso Sokusebenza (Ingqikithi): I-rig yokubhoboza iyajikeleza futhi idonse emuva, ama-blade/ama-roller cones ayasika, acindezele, futhi aphule udonga lwembobo, andise umgodi we-pilot ongu-φ200mm ube ngu-φ600–1500mm. Ukudonsa udaka olunomfutho ophezulu kuyapholisa amathuluzi okusika, kuthwale izicucu emuva, futhi kuvikele udonga lwembobo ukuze kuvinjelwe ukuwa. ③ Ukuphinda ...

3. Ukwakheka Kwemigodi kanye Nokudonswa Kwepayipi​

① Ububanzi bokugcina bembobo buyi-≥1.5 ubukhulu bembobo (isb., ipayipi elingu-φ610mm → ≥φ915mm imbobo). ② Ngemva kokuhlanza imbobo, xhuma ijoyinti elijikelezayo kanye nepayipi elizobekwa ngemuva kwesivuli sembobo, bese udonsa ipayipi ulibuyisele emgodini ukuze uqedele ukufakwa.

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