Izingosi zokubhoboza izikhala ezihlola umhlaba zimelela uhlobo olukhethekile lwezisetshenziswa zokuhambisa ezihamba phambili ezakhiwe ukufaka izixhumi zomhlaba, izixhumi zezingwenya, nezinhlelo zokuzinza komhlaba ezindaweni ezinzima nezindawo ezivalekile. Lezi zingosi ezifakwe ku-crawler zixuba ukuhamba okuhle kakhulu nezikhono zokubhoboza eziqondile, kuvumela ababambiqhaza bokuqhuba imisebenzi yokubhoboza izixhumi ezikhathini, ezindaweni ezibucayi nezindaweni lapho izimoto ezijwayelekile noma ezilandelayo zingaphephile khona. Ipulatifomu ye-crawler inikeza ukulingana okuphezulu nokusabalalisa umthwalo phezu komhlaba oyisicaba, emakhazeni, nasezintabeni ezimile, okwenza zibe zibalulekile emisebenzini yokuxhuma ezimweni ezinzima zezobuchwepheshe. Izikhala zokubhoboza izixhumi zithanda ukuqhamuka nezindlela zokubhoboza ezijikayo noma ezijikayo ezikwazi ukukhiqiza izikhala zokuxhuma ezinobubanzi obuvamile phakathi kuka-50mm kuya ku-150mm, nezindaweni eziphakathi kuti 30-50 amamitha kuye ngokuya ngemuva kobuchwepheshe bezinhlaka zomhlaba. Ukumiswa komphakathi okujwayelekile nokwakhiwa kwe-mastEncokwanile kukhuthaza ukuzikhandla kumphakathi ophakathi kwezithupha zendawo ezifana nezakhiwo ezikhona ngenkathi kugcinwa ukuxhumeka kwejubane lokubhoboza nokunembile. Ukwakhiwa kwezixhumi zomhlaba kudinga ukulawulwa kahle kwezimfuneko zokubhoboza, futhi izikhala ze-crawler zikhombisa i-torque, ingcindezi yokudla, kanye nesivinini sokujikeleza okufanele ukuze kudlule ezakhiweni ezihlukahlukene zejoloji. Lezi zikhala ziqakambisa emisebenzini ye-micropiling, lapho ukubhoboza izixhumi kuhlanganyela njengomjikelezo wokulungiselela ukufaka amakhasi, kanye nasemisebenzini yokuzinza kwezakhiwo ebeudinga izixhumi zezingwenya nezokunemba komhlaba. Inqubo yokubhoboza ikhiqiza amandla aphezulu okuphendukisa, ikakhulukazi uma ubhoboza ezindaweni zobuchwepheshe ezinamandla noma emhlabathini onamabala aseqinile, futhi ibhasi ye-crawler iyasabalalisa la ma-forces ngempumelelo ngaphandle kokulimaza umhlaba. Abasebenzi basebenzisa izikhala zokubhoboza izixhumi kumaphrojekthi okwakha ifa elifaka ukuqina kwezintaba, ukuvimbela ukudlula, ukuxhuma kwezisekelo zezimoto, kanye nokwakhiwa kwe zidumbu zezinhlaka. Izisetshenziswa zisebenza ngokwethembeka ezimweni zomhlaba ezilula—umhlaba weleyo, umhlaba onoshonalwa, ne-zinc deposit—lapho isivinini sokubhoboza kufanele silawulwe ukuze sigweme ukwephula nokukhulula ukudluliswa kwezikhalazo. Imisebenzi ethile yokubhoboza izixeshi ibalulekile kakhulu ebandakanya abashayeli abakhono abayakwazi ukuhamba kalula ezibhalweni zomhlaba, balungise izinketho zokuhamba, kanye nokuphatha izinhlelo zokuhambisa umoya noma amanzi ezogcina ukuphakama kwegumbi phakathi kokuhamba. Izikhala ze-crawler zenza izinto ezahlukene zokubhoboza kudla izibheno eziphakeme, amanzi, kanye nokuhamba komhlaba ezihambelana nezimo ze- hydrogeology kanye nezinga lamanzi emhlabathini okudlula enyangeni yokwakha izikhala. Ukuzimela kwezingosi zokubhoboza ezihlola umhlaba kudlulela yonke indlu—kusuka ekuhlinzekeni kwe-zikhala ezijulile nezinsiza zokwakha isikhumba esinqunyiwe ukuya ezinzakele ezimbili ezikhethekile ze- rock. Ukukhetha ikhwalithi efanele yokubhoboza izixhumi kuye ngezinga elingakanani, izimo ezilindelwe zendawo, izidingo ze-diameter ye-holes, kanye nezimo zokufinyelela endaweni. Ukuze kuthuthukiswe ukusebenza kokubhoboza izixhumi, kudinga ukwakhiwa kwezehlakalo zokubhoboza ezihlanganiswe nezisetshenziswa zokuhambelana, kuvumela ukwenziwa okuqhubekayo kusukela ekuphetheni okubhole isikhukhukazi sokukhumbula nezinsizakalo zokuvivinya umthwalo, okubalulekile ukuze kutholakale ikheli lokuxhuma kanye nokwethembeka kwesistimu emisebenzini ebalulekile yokwakha.
Amarigidhi wokupholisa ama-anchors ahamba nge-crawler anemast aphakeme afaka ingqalasizinda ekhethekile yokwakha izisekelo ezijulile, eyenzelwe ukusebenza okuphakeme kokugodla ezindaweni ezinzima ze-geotechnical. Lezi zinqola zenza ukufakwa kweziqiniseko zomhlaba ezimise okungafani, okuvumela ochwepheshe ukuba baphendule izinqubo zokugonda ukuze zihambisane nezimo ezithile zesayithi nezidingo ze-load. Uhlelo lwe-mast olukhulu lwenza kube lula ukuba abasebenzi bafezekise ukugonda okunqamulelayo kusuka kokungaphezulu kuze kube sezingeni eliphakeme, kuhlanganisa ubunye obukhulu ekufakeni ama-anchors. Le njongo ibalulekile ekutholeni izinselelo ezinzima zezisekelo lapho ukugonda okwejwayelekile kunganele, ikakhulukazi emisebenzini yokuzinza kwezakhiwo, ukufakwa kwemidlalo yokugcina, kanye nosizo lwemisebenzi engaphansi komhlaba lapho imithwalo ibalulekile futhi kudingeka izinhlelo zama-anchors ezihambisana nemikhondo eminingi. Indlela yobuchwepheshe engemuva kokugondiswa kwe-mast enkulu ibandakanya izinto zokulungisa ezinemininingwane ezigcina ukuzinza kokugonda ngesikhathi i-mast isebenza ezingeni eliphakeme kulesi simo se-horizontal. Iziphakathi ezinamathiselwe ku-crawler zinikeza ukuhamba okuhle ezindaweni ezingalingani kanye nezindawo ezivinjwe, okubalulekile emisebenzini yezezimali ethinta amagquma noma izakhiwo ezikhona. Lezi zinqola ngokuvamile zisebenzisa izinhlelo zokugondiswa kwe-rotary ezineziqondiso zokugonda ezilungisekayo nezilawulayo ukuze ziphumelele emifudlaneni yembali ethile - kusukela kukhilimu oluthambile nezinsalela kuya kumamaki anempilo. I-rig yokugoda kufanele igcine umfutho ofanayo nokujikeleza ngenkathi i-mast ithokozisa, kudinga izinhlelo ze-hydraulic ezithuthukile kanye nezikhangiso zokulawula ze-elekthronikhi. Abasebenzi basebenzisa ama-inclinometer aphuma emibhoshongweni kanye nezinsiza zokuhlola ukuqinisekisa ukuthi izinqubo zokugonda zihambelana nezincazelo zomqondo, kuqinisekisa ukuthi ukufakwa kweziqinisekiso kufinyelela ezingeni ezilinganisiwe nezijulile. Inqubo yokufaka ama-anchors iqhubeka ngalesi sikhathi sokuhlola, lapho imishini yokuhlukanisa ephezulu ifaka i-cement noma i-chemical grout emabhodweni afakiwe, idala ubudlelwano obungapheli obuphakela izimoto nezinsiza ezizungezile. Izicelo zokuchema ngamast omakhasi aphezulu zibhekene nemikhakha eminingi yokwakha nezinsiza ze-geotechnical. Iziphakamiso zokuzinza kwemikhondo zisebenzisa ama-anchors akhulayo ukuze kuqinise iziqongo ezingazinzile ezibhekene nokukl webala noma ukuchitha, lapho ama-arrays ama-anchors adalwe ukuze aphathe izinhlelo ezithile zokwehluleka ezitholakele ngokuhlola kwe-geotechnical. Izinhlelo zokwesekwa zesikhashana zezigebengu ezijulile zisebenzisa ukugonda kwe-anchors ukuhlinzeka ukufakwa okuhambelana, ikakhulukazi ezindaweni zasemadolobheni lapho izindonga eziphathekayo noma imihlangano ye-diaphragm idinga ukuhlinzekwa. Imisebenzi ye-infrastructure yangaphansi komhlaba - kufaka phakathi ukwakhiwa kwezintambo, ukumba amabhakede, kanye nokuthuthukiswa kwe-subway - kuncike ezinhlelweni ze-anchor ezikhaliphayo ukuze kujiye iziqubulo zemanzi kwangathi ekugcineni akukho kuvaliwe kwendawo ngezikhathi zokwakha. Imisebenzi yokugcina izakhiwo izuza ekulinganiseni okukhuluma ngezindlela ezibhalwe phansi kahle, ikakhulukazi lapho izici zomhlaba zifaka izakhiwo eziphakeme noma ziqukethe amathe amancane. Izimo zomhlabathi nosawoti zithinta kakhulu ukusebenza kwe-mast enkulu. Izinto eziphilayo zophondo ezineziqonde ezimile ezifaka ama-anchors ahlala isikhathi eside ngaphandle kokusekelwa futhi zenza izindlela zokugonda ezibukeka kahle. Izici ezinganhlanga ne-rok mix zidinga ukuhlela kwezobuchwepheshe okucacile futhi ngokuvamise kudingeka izinhlelo zokuhlola ukuqinisekisa ubuqiniso bembhoshongo. Izindawo ezicindezelwe kanye nezimo eziphakeme zendawo yamanzi zidinga izindlela zokuhlola ezikhethekile nezinyathelo zokuhlola imbhobho. Umongo owujulile wezokwakha ama-anchors kudinga ukuhlolwa kwe-geotechnical okuphelele kanye nokwakhiwa kobuchwepheshe, kucacisa izindawo zokugonda, imithwalo ye-anchor, amajikijolo, kanye nezinhlelo zokhuni ezithuthukisa ukusebenza kwesisekelo ngenkathi zigcina ukuphepha kokwakha kanye nezindleko ezisebenzayo phakathi kwezimo ezihlukahlukene zomhlaba.
Izinsiza eziphakeme zokufaka izikhonkwane zimi nga mshini wezobuchwepheshe owenzelwe ukufaka izikhonkwane emhlabeni ngendlela elula ezindaweni ezinzima kanye nezindawo ezincane lapho imishini yokw drilling enkulu ingenakufinyelelwa. Zisebenza ngaphakathi kwemigomo ejwayelekile yokuchoboza izikhonkwane, lezi zinsiza ezizinzile zenzelwe ukukwenza izimbobo ezinemininingwane nokufaka izikhonkwane eziciwe ngaphakathi komhlaba, okuyizimpahla eziyisisekelo kwi-engineering yokwakha ezindaweni ezijulile kanye nomsebenzi wokuzinza komhlaba. Uhlaka lwazo oluphakeme kanye nezinhlelo zokuhamba ezihamba emizileni zenza kube lula ukuze abakhi babe ngaphansi kwezimo zomhlaba ezinzima, izinyathelo eziphakeme, kanye nezindawo zomsebenzi ezilawulwayo ngenkathi bagcina ukunemba kokuchoboza kanye nezokuphepha emsebenzini. Ngokungafani nezinhlelo zokuchoboza izikhonkwane ezijwayelekile, lezi zinsiza eziphakeme zigxila ekwaneliseni ukufinyelela kanye nokuguquguquka emsebenzini ngaphandle kokuphula amandla okuchoboza, okwenza zibe khona kakhulu ezinhlelweni zomhlaba ezidinga izixazululo ezihambayo neziguquguqukayo ezindaweni ezinzima ze-engineering engaphansi komhlaba. Ukusebenza kwezakhiwo zezingaphakathi zokuchoboza zifaka ukuphosa kumazinga athile phakathi kwemifantu ehlukahlukene yephunga nomcako, kulandelwa ukufakwa kwezintambo ezinamandla ezihamba phambili noma izinsiza zezikriveli ngaphansi kokulawula kokugcina kuzinhlaka ze-geoloji ezikahle. Izinsiza eziphakeme zokufaka izikhonkwane ngokuvamile zinesistimu yokuchoboza ye-hydraulic enezinga lokuchoboza le-rotary noma le-percussion kanye nezakhiwo eziphethe umthwalo ezikhululekile ngokuthi ziwumthwalo ophakeme wezinsiza. Izikhonkwane zomhlaba zisebenza njengokwakhiwa kwezinto ezihambisa umthwalo ezindaweni ezisekelwe ezizinzile, zidinga ukuqinisekisa ukuhlolela ukuphakanyiswa okuqondile kanye nokuhlonza izitezi ze-geologiya. Abasebenzi kufanele bahlaziye izimo eziqondile ze-geoteknikhi ezihlanganisa ukwakheka komhlabathi, amazinga amanzi, izici zokukhuphuka, ukuhlanganiswa kwezinsiza zomcako, kanye nezinhlelo ze-stratigraphic ukuze basungule izincazelo zezikhonkwane kanye nezimo zokufaka. Inqubo yokuchoboza ivamise ukusebenzisa izinhlelo zokuhlunga ukuvikela izindonga zezimfolo emhlabathini ongasagculiseki, ngenkathi izinqubo ze-grouting ziqinisekisa ukuphakamisa okungapheli kanye nokuvikelwa kokugqwala isikhathi eside kwezinsiza ezibekwe kunye nezinsimbi. Izinsiza eziphakeme zokufaka izikhonkwane zisebenza emisebenzini ebalulekile ehlukeneyo ezindaweni zokwakha nezokwakha izakhiwo zomphakathi. Ekwakheni, izikhonkwane zomhlaba zinikeza ukweseka okuhamba ngehlangothi ukuze kuqinisekiswe ukuhleleka kokuchoboza emabhange, izinhlelo zezakhiwo ezijulile, kanye nemisebenzi yokwakha izisekelo. Izinhlelo zokuzinza ezifanele kanye nezinhlelo zokulungisa izinsizwa zidinga ukufakwa kwezikhonkwane ezisontekile ukuze kuboshwe ukuhamba komhlaba futhi kuthuthukiswe izici zokuphepha zamathafa. Ukuthuthukiswa kwezokwakha okuhlanganisa nezikhala zamathunhu, izinhlelo zokukhuyela, kanye nezikimu zokweseka eziphakeme zdepend on properly installed anchor systems for long-term structural stability. Lezi zinsiza zenza kube lula kokubili ukwakha okwethulwa - ezinikezela ukwesekwa okuhamba phambili nangokuphakanyiswa ngenkathi kuphakamisa - kanye nokufakwa okungapheli ezimo ze-geologiya ezinzima lapho izindlela ezijwayelekile zokuphakela ezijulile noma izindlela ezishumekiwe zikhombisa ukuthi azivunyelwe noma zenze izindleko eziphezulu. Ikhono lazo lokusebenza ezindaweni ezincane, emhlabathini ongasagculiseki, kanye naseduze nezakhiwo ezikhona kubenza zibe izinsiza ezibalulekile kubakhi bezobuchwepheshe abaqeqeshiwe benza izixazululo eziyinkimbinkimbi ze-engineering engaphansi komhlaba futhi bahlinzeka ngempumelelo yokwakha ukuthi ibanjwe emisebenzini ebizayo.