I-Trenchless ngokwenene yindlela yokwakha kubunjineli bemihla ngemihla, njengokwakhiwa kokomba othe tyaba, ukwakhiwa kwemibhobho yokukrazula, ukugrumba i-oyile, ukuphononongwa kwejoloji kunye nokwakhiwa koomatshini bokukhusela itonela.Iiprojekthi ezingenzi ulwakhiwo oluphantsi komhlaba ngokugrumba umhlaba zibizwa ngokuba ziiprojekthi ezingenamijelo.Kwiiprojekthi ezingenayo i-trenchless bentonite idlala indima ebalulekileyo.