Tsanangudzo Yezvikumbiro
Kuvakwa kwetunnel nguva dzose kwave kuri musimboti wezvirongwa zvokuvaka, uye kuvaka kwakaoma. Mukuwedzera kukuputika, kuvakwa kwenzira yemazuva ano kwakazarura nzira itsva yekuchera. Nerubatsiro rwemichina mitsva, idombo resaha.
Panguva yekugadzira tunnel, zviso zvedombo zvakaoma kwazvo dzimwe nguva zvinosangana. Nekuda kwekuoma kwakanyanya, kushandiswa kwemichina yekugaya haichakwanise kuita zvinodiwa nekushanda, saka masaha ematombo anosarudzwa kuti acheke. Tunnel Rock Kucheka neDombo Saw inzira yekubata nayo yakaoma michindwe. Saha yedombo inogadzirwa nedhaimondi rekugadzira, rinokwana zvakakwana kune rakaomarara. Nzira uye kudzika kwekucheka kunoda kuongororwa maererano nemamiriro chaiwo edombo kuti uone chirongwa chekuvaka.
Iyo chaiyo nzira yekuvaka ndeye kushandisa dombo rakacheka kucheka zvidimbu zviviri panguva ye5 cm pachiso chechiso, kudzika kweiyo slit inenge 50-100 cm, uye pakati yakaputsika. Mitsara miviri yemakomba yakaroverwa kuti hydraulic cracking. Nenzira iyi, inoenderera mberi, ichicheka uye ichipwanya nguva dzose, uye inogona kusvika pakadzika mamita 4-5 pazuva. Mhedzisiro yacho inoshamisa, iyo inovandudza zvakanyanya kushanda kwekuchera mugero.
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