Ihe Mmalite Oghere e ji eme ihe na Horizontal Directional Drilling (HDD) anaghị "egwupụta oghere ọhụrụ site na mmalite". Kama nke ahụ, ọ na-agbaso usoro nzọụkwụ atọ: nke mbụ, igwu obere oghere pilot, wee jiri ihe mepere oghere ahụ gbasaa oghere ahụ nwayọ nwayọ ruo dayameta e mere atụmatụ ya, wee mechaa dọpụta paịpụ ahụ. A na-eji teknụzụ a na-abụghị nke igwu ala eme ihe nke ukwuu n'ọrụ ịtọ paịpụ, na-ezere mmebi nke elu ala, okporo ụzọ, na ụlọ.
1. Gwuo oghere Pilot mbụ
① Ngwa ọrụ a na-egwupụta ihe na-egwupụta obere oghere pilot-diamita (φ80–200mm) n'ebe ntinye dịka ụzọ e si hazie ya si dị. ② A na-eji obere ihe eji egwupụta ihe, ihe nyocha, na ihe e ji agbagọ agbagọ (1°–2°) eme ihe maka ntụzịaka, ịtụgharị na ịga n'ihu mgbe a na-egwupụta ihe. A na-eji apịtị eme ka oyi jụọ oyi, ibu ihe e ji egbutu ihe, na nchedo mgbidi oghere. ③ Gwuo ruo mgbe ị ga-eru ebe a na-apụ iji mechaa banye n'ime oghere pilot ahụ.
2. Jiri oghere mepere emepe dochie ya maka Pullback Reaming
Wepụ ihe mgbochi pilot na njedebe ọpụpụ wee jikọọ ya na HDD Hole Opener, wee mee nhazi nzọụkwụ site na nzọụkwụ. ① Nhazi: Ọ nwere ahụ etiti, agụba/kọnị roller a pụrụ ịgbanwe, na nozzles. E kewara ya n'ụdị atọ: ụdị scraper (maka ala dị nro), ụdị roller cone (maka nkume), na ụdị ejikọtara ọnụ (maka nhazi mgbagwoju anya). ② Ụkpụrụ Ọrụ (Isi): Ngwa ọrụ a na-agbagharị ma na-adọghachi azụ, agụba/kọnị roller na-egbutu, na-apịa, ma na-akụri mgbidi oghere ahụ, na-agbasa oghere pilot φ200mm ruo φ600–1500mm. Ngwunye apịtị dị elu na-eme ka ngwaọrụ ịkpụcha dị jụụ, na-ebu mbepụ azụ, ma na-echebe mgbidi oghere ahụ iji gbochie ọdịda. ③ Ntugharị ọtụtụ ogbo: Dịka ọmụmaatụ, φ200→φ400→φ600→φ800. Ntugharị ọ bụla na-agbasa otu ọkwa iji zere ịdaba oghere.
3. Nhazi oghere na ndọda ọkpọkọ
① Dayameta oghere ikpeazụ bụ ≥1.5 okpukpu dayameta paịpụ (dịka ọmụmaatụ, paịpụ φ610mm → ≥φ915mm oghere). ② Mgbe e sachara oghere ahụ, jikọọ njikọ swivel na paịpụ a ga-etinye n'azụ oghere mepere emepe, wee dọpụta paịpụ ahụ azụ n'ime oghere ahụ iji mezue ntọala ahụ.
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Oge ozi: Mee-06-2026