Three-dimensional geonet drain (eo hape e tsejoang e le three-dimensional geonet drain, tunnel geo net drain, drainage network): Ke letlooeng la polasetiki le mahlakore a mararo le ka kopanyang li-geotextile tse tsoang mahlakoreng a mabeli.E ka nkela sebaka sa lehlabathe le lehlohlojane sebaka sa khale 'me e sebelisoa haholo bakeng sa lithōle, ho qhalla lithōle, likotopo le mabota a kotopo.