Kodi Chotsegulira Mabowo a HDD Chimabowola Bwanji Mabowo ndi Chobowola Cholimba Panthawi ya Ntchito ya HDD?

Chotsegulira Mabowo chomwe chimagwiritsidwa ntchito mu Horizontal Directional Drilling (HDD) sichimabowola bowo latsopano kuyambira pachiyambi. M'malo mwake, chimatsatira njira zitatu: choyamba kubowola bowo laling'ono, kenako kugwiritsa ntchito chotsegulira mabowo kuti pang'onopang'ono ukulitse bowolo mpaka kukula kwake, kenako ndikukoka payipi. Ukadaulo wosakumba uwu umagwiritsidwa ntchito kwambiri pa ntchito zoyika mapaipi, zomwe zimathandiza kupewa kuwonongeka kwa nthaka, misewu, ndi nyumba.​

1. Choyamba bowolani dzenje loyendetsa ndege

① Chipangizo chobowolera chimabowola dzenje laling'ono lolowera (φ80–200mm) pamalo olowera malinga ndi njira yopangidwira. ② Chobowolera, probe, ndi bend sub (1°–2°) zimagwiritsidwa ntchito poyang'ana, kuzungulira ndi kupititsa patsogolo pobowola. Matope amagwiritsidwa ntchito poziziritsa, kunyamula zidutswa, ndi kuteteza khoma la mabowo. ③ Bowola mpaka utafika pamalo otulukira kuti dzenje loyendetsera bowolo lilowe.​

2. Sinthani ndi Chotsegulira Mabowo kuti mugwiritse ntchito Pullback Reaming​

Chotsani chobowolera choyendetsa bowo kumapeto kwa chotulukira ndikuchilumikiza ku HDD Hole Opener, kenako chitani pullback reaming pang'onopang'ono. ① Kapangidwe: Kamakhala ndi thupi lapakati, masamba/ma cone osinthika, ndi ma nozzles. Kagawika m'mitundu itatu: mtundu wa scraper (wa dothi lofewa), mtundu wa roller cone (wa miyala), ndi mtundu wophatikizana (wa mapangidwe ovuta). ② Mfundo Yogwirira Ntchito (Core): Chobowolera chimazungulira ndikukoka kumbuyo, masamba/ma cone ozungulira amadula, kufinya, ndikuphwanya khoma la dzenje, ndikukulitsa dzenje la φ200mm kufika pa φ600–1500mm. Kuthira matope mwamphamvu kumaziziritsa zida zodulira, kunyamula zodulidwa kumbuyo, ndikuteteza khoma la dzenje kuti lisagwe. ③ Kuthira Masamba Ambiri: Mwachitsanzo, φ200→φ400→φ600→φ800. Kuthira kulikonse kumakulitsa gawo limodzi kuti dzenje lisagwe.

3. Kupanga Mabowo ndi Kutulutsa Mapaipi​

① M'mimba mwake mwa dzenje lomaliza ndi ≥1.5 kuchulukitsa m'mimba mwake mwa payipi (monga, chitoliro cha φ610mm → ≥φ915mm). ② Mukamaliza kuyeretsa dzenje, lumikizani cholumikizira chozungulira ndi chitoliro choti chiyikidwe kumbuyo kwa chotsegulira dzenje, kenako kokerani chitolirocho m'dzenje kuti mumalize kuyika.

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