Chifukwa cha kuletsa kutalika ndi kutalika kwake, kuphimba ma tunnel nthawi zonse kumakhala kovuta kwa ogwira ntchito.Mawonekedwe a tunnel amachepetsa njira zoperekera chithandizo.Njira zapansi panthaka kapena masitima apamtunda nthawi zambiri zimakhala zopapatiza, ndipo pamwamba pake zimakhala zotsika;pamene misewu imakhala ndi mutu waukulu komanso waukulu.Nthawi zambiri, ngalandezi zimangokhala nthawi zina;Chifukwa chake, mawonekedwe osinthika akugwiritsa ntchito, nthawi yokhazikitsa mwachangu, komanso mtengo wotsika zidapangitsa wobwerezayo kukhala chisankho chabwino ngati njira yolumikizira ma siginecha.
Chifukwa cha mawonekedwe a mtunda, zimakhala zovuta kuti chizindikiro chochokera ku siteshoni yoyambira chiziyenda njira yonse kudutsa mumsewu pokhapokha ngati malo oyambira akupangidwira kuti atseke.Chifukwa chake, ma tunnel ambiri amakhala ndi vuto losawonetsa bwino ma sign.Kupatula kugwiritsa ntchito malo oyambira makamaka pakuphimba ngalande, Fiber Optic Repeater ndiyenso njira yabwino yolumikizira ngalandeyo, pomwe High Power Repeater imathanso kukhazikitsidwa kuti ipititse patsogolo kufalikira kwa ma sign mumsewu.
Nthawi yotumiza: Nov-23-2021