Ko HDD Hole Opener inoboorera sei maburi nerig yekuboorera panguva yepurojekiti yeHDD?

Chinovhura Maburi chinoshandiswa muHorizontal Directional Drilling (HDD) hachi "boore gomba idzva kubva pakutanga". Asi, chinotora matanho matatu: kutanga kuchera gomba diki, wozoshandisa chinovhura maburi kuwedzera gomba zvishoma nezvishoma kusvika padhayamita rakagadzirwa, uye pakupedzisira kudhonza pombi. Iyi tekinoroji isiri yekuchera inoshandiswa zvakanyanya mumapurojekiti ekuisa mapaipi, zvichidzivirira kukuvara kwepasi, migwagwa, nezvivakwa.​

1. Chera gomba remutyairi kutanga​

① Chigadziko chekuboorera chinoboorera gomba diki repilot (φ80–200mm) panzvimbo yekupinda zvichienderana nenzira yakagadzirwa. ② Chibato chekuboorera, probe, uye kongiri (1°–2°) zvinoshandiswa pakutungamira, kutenderera uye kufambira mberi panguva yekuboorera. Madhaka anoshandiswa pakutonhodza, kutakura zvidimbu, uye kudzivirira madziro emaburi. ③ Boorera kusvika wasvika panzvimbo yekubuda kuti upedzise kupinda kwegomba rekuboorera.​

2. Tsiva neHole Opener yePullback Reaming​

Bvisa pilot drill bit pamucheto wekubuda woibatanidza neHDD Hole Opener, wobva waita pullback reaming nhanho nhanho. ① Maumbirwo: Ine muviri wepakati, mablades/roller cones anogona kutsiviwa, uye nozzles. Yakakamurwa kuita mhando nhatu: rudzi rwekukwenya (yevhu rakapfava), rudzi rweroller cone (yedombo), uye rudzi rwakabatana (rwema complex formations). ② Nheyo Yekushanda (Core): Rig yekuboorera inotenderera nekudhonza kumashure, mablades/roller cones anocheka, anodzvanya, uye anopwanya madziro egomba, achikwidza gomba repilot re φ200mm kusvika ku φ600–1500mm. Kudhonza madhaka ane simba rakawanda kunotonhodza maturusi ekucheka, kunotakura zvidimbu kumashure, uye kunodzivirira madziro egomba kudzivirira kudonha. ③ Multi-stage Reaming: Semuenzaniso, φ200→φ400→φ600→φ800. Pullback yega yega inowedzera nhanho imwe kudzivirira kudonha kwegomba.

3. Kuumbwa kweMakomba uye Kudhonzwa kweMapaipi​

① Dhayamita yekupedzisira yegomba i ≥1.5 yakapetwa dhayamita yepombi (semuenzaniso, pombi ye φ610mm → ≥φ915mm). ② Mushure mekuchenesa maburi, batanidzai jira rinotenderera nepombi ichaiswa kuseri kwechinhu chinovhura maburi, wobva wadhonza pombi mugomba kuti upedzise kuisa.

Kana muchida chero chinhu ndapota taurai nesu pa www.chinafareast.com