I-Hole Opener esetyenziswa kwi-Horizontal Directional Drilling (HDD) "ayigqobi umngxuma omtsha ukusuka ekuqaleni". Endaweni yoko, ilandela inkqubo enamanyathelo amathathu: kuqala ukugqobhoza umngxuma omncinci wokuhlola, emva koko kusetyenziswa i-hole opener ukwandisa umngxuma kancinci kancinci ukuya kububanzi obuyiliweyo, kwaye ekugqibeleni itsale umbhobho umva. Le teknoloji yokungagrumbi isetyenziswa kakhulu kwiiprojekthi zokubeka imibhobho, ithintela ngempumelelo umonakalo kumphezulu womhlaba, iindlela, kunye nezakhiwo.
1. Bhoboza uMngxuma Wokukhokela Kuqala
① Isixhobo sokugrumba sigrumba umngxuma wokuhlola omncinci (φ80–200mm) kwindawo yokungena ngokwendlela eyilwe ngayo. ② I-drill bit, i-probe, kunye ne-bend sub (1°–2°) zisetyenziselwa ukujolisa, ukujikeleza kunye nokuqhubela phambili ngelixa kugrunjwa. Udaka lusetyenziselwa ukupholisa, ukuthwala iziqwenga, kunye nokukhusela udonga lwemingxunya. ③ Grumba ude ufikelele kwindawo yokuphuma ukuze ugqibezele ukungena komngxuma wokuhlola.
2. Tshintsha ngeHole Opener ukuze ubuyisele i-Pullback Reaming
Susa i-pilot drill bit ekupheleni kokuphuma kwaye uyidibanise kwi-HDD Hole Opener, uze wenze i-pullback reaming inyathelo ngenyathelo. ① Ulwakhiwo: Luqulathe umzimba ophakathi, ii-blades/roller cones ezinokuthathelwa indawo, kunye nee-nozzles. Yahlulwe yaba ziintlobo ezintathu: uhlobo lwe-scraper (lomhlaba othambileyo), uhlobo lwe-roller cone (lwelitye), kunye nohlobo oludibeneyo (lwee-complex formations). ② Umgaqo Wokusebenza (Undoqo): I-drilling rig iyajikeleza kwaye itsale umva, ii-blades/roller cones ziyasika, zicinezele, kwaye zityumze udonga lomngxuma, zandisa umngxuma we-pilot we-φ200mm ukuya kwi-φ600–1500mm. Udaka oluxinzelelweyo oluphezulu luyapholisa izixhobo zokusika, luthwala i-cuttings lubuyele umva, kwaye lukhusela udonga lomngxuma ukuthintela ukudilika. ③ Ukuphinda-phinda kwi-Multi-stage: Umzekelo, φ200→φ400→φ600→φ800. Ukuphinda-phinda ngakunye kwandisa inqanaba elinye ukuze kuthintelwe ukudilika kwemingxunya.
3. Ukwakheka kweMingxunya kunye nokuPhulwa kwePipeline
① Ububanzi bomngxuma wokugqibela buyi-≥1.5 ngokuphindwe kabini kunobubanzi bombhobho (umz., umbhobho we-φ610mm → ≥φ915mm umngxuma). ② Emva kokucoca umngxuma, qhagamshela i-swivel joint kunye nombhobho oza kubekwa ngasemva kwesixhobo sokuvula umngxuma, uze utsale umbhobho uwubuyisele emngxunyeni ukuze ugqibezele ukubeka.
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Ixesha leposi: Meyi-06-2026