Kwiiprojekthi zokwandisa iindlela zangaphantsi komhlaba zasezidolophini, ukuqhumisa ulwandiso lwesitishi ngumsebenzi obalulekileyo nonobungozi obukhulu. Njengomvelisi ogxile kwiukubhola amatyeoomatshini, sazisa i-YT28umbhobho welitye lomoya—isixhobo esikumgangatho ophezulu esenzelwe iindawo ezixineneyo nezifuna ukuchaneka.YT28Idibanisa uyilo olukhaphukhaphu kodwa oluqinileyo olusebenzisa umoya kunye nenkqubo yokuxhasa imilenze ezinzileyo, evumela abaqhubi ukuba benze ukubhola imingxunya ngokuchanekileyo kwiindawo ezixineneyo. Indlela yayo yokubhola emanzi ithintela ngempumelelo uthuli, inciphisa ukuveliswa kobushushu, kwaye yandisa ubomi be-drill bit, ngelixa indlela yokuchukumisa egudileyo iqinisekisa amandla okubetha ahambelanayo, inciphisa ukuphambuka ngexesha lokubhola. Iimpawu ezicacileyo zokubeka kunye nee-engile zemilenze ezihlengahlengiswayo zinceda ngakumbi ekufezekiseni ulungelelwaniso oluchanekileyo lwemingxunya, oluyimfuneko ekuphepheni ukonakala kwezakhiwo zetonela ezikhoyo kunye nokuqinisekisa iziphumo zokuqhumisa ezilawulwayo.

Ngaphambi kokusebenzisa i-YT28, iindawo ezininzi zemigodi kunye neendawo zokufaka iityhubhu zazixhomekeke kwiindlela zokubhola iityhubhu zemveli okanye iindlela zokubhola ngesandla, ezazisoloko zikhokelela kwimingeni efana nokuphambuka kwemingxuma, ukungcangcazela okugqithisileyo, kunye nongcoliseko lothuli. Ezi ngxaki zibangele iziphumo zokuqhushumba ezingalinganiyo, iingozi ezinokubakho zokhuseleko, kunye nexesha elide leprojekthi. Emva kokutshintshela kwi-YT28, abaqhubi babike uphuculo olubalulekileyo: ukuchaneka kokubhola kunyuke malunga ne-40%, kunye neempazamo zokulungelelanisa imingxunya ezincitshisiweyo ukuya kwi-3 cm kwiingqimba zamatye ezintsonkothileyo. Inkqubo yokubhola emanzi ikwaphucule iimeko zokusebenza ngokunciphisa amanqanaba othuli olusemoyeni ngaphezulu kwe-80%, yandisa ukubonakala kunye nokhuseleko lokuphefumla kubasebenzi. Kwiprojekthi yokwandiswa kwesitishi semetro yakutshanje kwindawo yasezidolophini eyakhiwe ngokuxinana, i-YT28 ivumele abakhi ukuba bagqibezele isigaba sokuqhushumba sokukhulisa iiveki ezimbini ngaphambi kwexesha elicwangcisiweyo, kungekho ziganeko zomonakalo eludongeni lwetyhubhu ekufutshane. Ukuqina kwezixhobo kwabonakala njengoko zigcine ukusebenza okuzinzileyo ngokusebenza rhoqo kwiindawo ezifumileyo nezirhabaxa ngaphandle kokuwohloka okukhulu.

Kubaphuhlisi beziseko zophuhliso kunye neengcali zokufaka imijelo, i-YT28 imele okungaphezulu nje kokubhola—sisixhobo esichanekileyo esilinganisela amandla, ulawulo, kunye nokhuseleko lwabasebenzisi. Uyilo lwayo lubonisa amava omzi-mveliso wethu eminyaka emininzi ekuphuhliseni izisombululo zokumba amatye ukuze kusetyenziswe izinto eziphantsi komhlaba ezinzima. Sinikezela ngenkxaso epheleleyo yobugcisa, kubandakanya nesikhokelo kwindawo yokubeka imilenze, ukulungiswa kwamaza okuchaphazela, kunye nokugcinwa kwenkqubo yokubetha evalwe ngamanzi. Iyunithi nganye ivavanywa phantsi kweemeko ezilinganiselweyo zesithuba ngaphambi kokuba ihanjiswe ukuqinisekisa ukuthembeka. Njengoko izixeko kwihlabathi liphela zandisa uthungelwano lwazo lokuhamba ngaphantsi komhlaba, imfuno yezixhobo zokubhola ezichanekileyo, ezisebenzayo, nezikhuselekileyo iyaqhubeka nokukhula. Ukubhola kwamatye emilenzeni ye-YT28 kuyahlangabezana nale mfuno ngokuguqula imisebenzi enzima yokuqhumisa ibe yimisebenzi elawulekayo, eqikelelwayo—ekugqibeleni inegalelo kuphuhliso lweziseko zophuhliso zasezidolophini olukhuselekileyo, olukhawulezayo, nolunoqoqosho ngakumbi.