Ukubilisa kuyinqubo yokushintsha uketshezi lube yigesi. Ukubilisa kwenzeka lapho umfutho womoya ogcwele ulingana nomfutho womoya (umfutho womoya = umfutho womoya). Sixoxa ngamanzi abilayo kuphela. Umfutho womoya ogcwele ulingana ngqo nokushisa kwamanzi, lapho izinga lokushisa lamanzi liphakeme, umfutho womoya ogcwele uphakeme. Uma sifudumeza amanzi, amabhamuza amancane avame ukuvela phansi kwesitsha. Ukuba khona kwamabhamuza kubonisa ushintsho koketshezi lube yigesi. Uma umfutho womoya ogcwele ungaphakathi kwebhamuza uncane kunomfutho womoya wangaphandle, ibhamuza lizoncipha futhi liqhekeke ngaphambi kokufika ebusweni. Amabhamuza ayabhujiswa ngoba amandla okusunduza emoyeni wangaphandle aphezulu kunamandla okusunduza komusi ngaphakathi kwebhamuza. Umfutho womoya wangaphandle uphakeme kunomfutho womoya ebhamuza ukuze umoya wangaphandle ube namandla abaluleke kakhulu (P = F / A).
Njengoba izinga lokushisa lamanzi likhuphuka, ingcindezi yomhwamuko ogcwele ebhamuzeni nayo iyanda. Uma ingcindezi yomhwamuko ogcwele ebhamuzeni ilingana noma iphakeme kunengcindezi yomoya wangaphandle, khona-ke ibhamuzeni lizokhula futhi lintante lize lifike phezulu. Ngemva kokufika ebusweni, amabhamuza azophuka, futhi umhwamuko wamanzi ebhamuzeni uyaphuma emanzini. Inqubo yokubila iyenzeka. Amabhamuza avele kakhulu ngoba amandla okusunduza ebhamuzeni aphezulu kunamandla okusunduza omoya wangaphandle. Ingcindezi yomhwamuko ebhamuzeni iphakeme kunengcindezi yomoya wangaphandle ukuze umusi ngaphakathi kwebhamuza ube namandla amakhulu. Njengoba amabhamuza enyuka, umthamo womusi nawo uyanda ukuze ubuningi bomusi bunciphe. Ngenxa yokuthi ubuningi bomusi bunciphe (ubuningi bomusi buncane kunesisindo samanzi) amabhamuza angantanta aye phezulu. Kufana nokhuni olomile noma i-cork entanta phezu kwamanzi. Ukhuni olomile noma i-cork ingantanta ngoba ubuningi buncane kunesisindo samanzi.
Ngokusekelwe encazelweni engenhla, singasho ukuthi inqubo yokubilisa yenzeka lapho ingcindezi yomhwamuko wamanzi ilingana noma ingaphezu kwengcindezi yomoya. Ngakho-ke, izinga lokushisa lamanzi elibilayo lincike kakhulu ekucindezelweni komoya. Uma ingcindezi yomoya incane, izinga lokushisa lamanzi elibilayo liphansi. Noma ngokuphambene nalokho, uma ingcindezi yomoya iphakeme, izinga lokushisa lamanzi elibilayo liphakeme. Ngokuvamile, lapho indawo ilinganiswa phezulu kusukela ebusweni bolwandle, ingcindezi ye-athomu incane kuleyo ndawo. Ngakho-ke, kungaphethwa ngokuthi lapho indawo ilinganiswa phezulu kusukela olwandle, izinga lokushisa lamanzi elibilayo liphansi kuleyo ndawo. Izinga lokushisa lamanzi elibilayo egqumeni liphansi kunezinga lokushisa lamanzi elibilayo ogwini lolwandle. Izinga lokushisa lamanzi elibilayo esiqongweni sezintaba liphansi kunezinga lokushisa lamanzi elibilayo ezindaweni eziphansi. Amanzi afudumele esiqongweni sentaba abilayo ngokushesha kunamanzi afudumele ngasogwini lolwandle. Kodwa uma upheka irayisi esiqongweni sentaba, irayisi liphekwa isikhathi eside ngoba izinga lokushisa elibilayo liphansi, ngakho izinga lokushisa elibilayo liphansi. Ukuze upheke ngokushesha, kuvame ukusetshenziswa isitofu sokucindezela. Isitofu sokucindezela sisebenza ukwandisa ingcindezi yomoya ukuze izinga lokushisa lamanzi elibilayo libe phezulu. Ukushisa okuphezulu okubilayo kubangela ukushisa okuphezulu kwamanzi abilayo.
