Ibhawudi engqukuva ineziphelo eziphothiweyo, ingasetyenziswa njengenkqubo ekhutshiweyo ngokupheleleyo okanye egxininisiweyo.Ngeentlobo ezahlukeneyo zamandongomane kunye neewasha, inokufakwa ngokukhawuleza kwaye ibonakala njengenye yezona ndleko zisebenzayo zokulawula umhlaba kwiimveliso zemigodi kunye ne-tunneling.