Umkhumbi-ngwenyaiphayiphiukukhethwa kwezinto ezibonakalayo kufanele kuhlangabezane nomklamo kanye nezidingo zokubeka ipayipi lasolwandle kanye nezidingo zokwakha.Ngokuthuthuka kwezimboni zamapayipi ahamba ngaphansi kolwandle, ukwethembeka kwepayipi sekuye kwadingeka kakhulu, kodwa izindlela zokukhiqiza amapayipi ahamba ngaphansi kwamanzi azikho izidingo ezikhethekile, njengepayipi lensimbi engenamthungo, ipayipi lensimbi elivikelwe elivikelwe i-arc eliqondile, njll.Ukuze uhlangabezane nezidingo zokuklama nokufakwa ngaphansi kwesisekelo, ukukhetha ipayipi yokonga kakhulu.

Ngokunwetshwa kokuthuthukiswa kukawoyela ogwini lwaseChina, ukwakhiwa kwamapayipi ahamba ngaphansi kolwandle ngemva kweminyaka yokuhlolwa okuqhubekayo futhi kwathuthukiswa ngokwezinqubo ezibalulekile zeqembu lokwakha, ukushisela, ukuhlola, nokunye okuzwakalayo ngokwesayensi.Ithrendi yokwakhiwa kwamapayipi ahamba ngaphansi kolwandle, ukusebenza kahle okuphezulu kanye nokwakhiwa kwekhwalithi ephezulu, ubuchwepheshe benqubo buye budingeka kakhulu, ikakhulukazi egameni lezinga lobuchwepheshe bokushisela ukwakhiwa kwamapayipi angaphansi kwamanzi, ukuthuthukisa izinga lamandla ensimbi yamapayipi angaphansi kwamanzi, ukusebenza kobuchwepheshe bokushisela amapayipi kanye nokuphezulu ukusebenza kahle kokukhiqiza, ukusebenza kwezindleko eziphezulu zenqubo yokushisela okuzenzakalelayo kuyinto ebaluleke kakhulu, ukuze kuhambisane nesivinini sokuthuthukiswa kokwakhiwa kwamapayipi angaphansi kolwandle.