Izingcezu zokuhlinzeka ngemishini yokuhlikihle, i-SDA (Self-Drilling Anchor) izinhloso zikhuluma ngezinsiza ezikhethekile eziklanyelwe ukufakwa kwezinhlelo zezingcezu zokuhlikihle, okuyingxenye ebalulekile kwezobunjiniyela be-geotechnical besimanje kanye nemisebenzi yokwakha izisekelo ezijulile. Lezi zingcezu zokuhlikihle zisebenza njengenxenye ebalulekile yochungechunge lwezikhala eziphukile ezihlikihla ezindaweni ezikhungathekile nezindonga ezithambile zedwala, ngenkathi ziheha izinto zokuhlikihle ngegumbi eliphakathi. Ubuchwepheshe be-SDA bokuhlikihle buveze umthetho wokufakwa kwezikhala ngokukhulula isidingo sokuqhuba, ukulinganisa, kanye nezokuhlikihle, ngaleyo ndlela kwehlisa isikhathi sokufaka futhi kuthuthukise ukusebenza kahle kwephrojekthi ngokweqile. Emkhakheni wezimboni zezisekelo ezijulile kanye nezokuhlinzeka, izi-SDA zingcezu zokuhlikihle zibalulekile kubachwepheshe ababhekene nokuzinza kwezinhlelo zokonga, ukuqina kwezindawo zokwakha, ukunciphisa umhlaba, nokwesekwa kokumba okuyingxenye yezimo zomhlaba ezinzima. Inqubo yokufaka usebenzisa izingcezu zokuhlikihle ze-SDA ihlanganisa imishini yokuhlikihle eyilayo ivumela ukuba umgogodla ophukile uqhubeke ngokuhamba phakathi kwezingqimba ezahlukene zomhlaba nezihlahla ze-dwala eziphukile ngenkathi kugcinwa ikhono eliqhubekayo lokuhlikihle. Ngemuva kokwakhiwa, ingcezu yokuhlikihle idala umgodi ngesikhathi sokusebenza kanti umgogodla ongaphandle usetshenziselwa ukuthumela igrothi, lapho igrothi ihamba emgogodleni ophakathi nendawo futhi ikhishwa emgqeni ongaphambi kwengcezu nakwizinga leitor ngaleso sikhathi. Le ndlela yokuhlikihle-nokuhlikihle iyanciphisa ukucekelwa phansi kwezinto ezizungezile futhi yehlisa izindleko zokufaka uma kuqhathaniswa nezindlela zokufaka ezijwayelekile. Izingeni ze-SDA z available ukuze kutholwe ubukhulu obuhlukahlukene kanye nezimo, kusukela kumamitha ayi-32 kuya phezulu kweyi-100, kuye ngezidingo zamandla okusebenza nezimo zomhlaba. Ukwakheka kokuhlanganyela ngokuvamile kubandakanya ama-carbide noma izingxenye ze-diamond eziklanyelwe ukuhamba phansi kwizindonga eziphusile, i-saprolite, i-granite esondlelene, i-sandstone, nezinye izakhiwo ezijwayelekile ezitholakala emiphakathini yokwakha izisekelo. Izicelo zezinhloso zezingcezu zokuhlikihle ze-SDA ziphendela ezimweni eziningi zokwakha eziyadinga ukuzinza komhlaba kanye nokwesekwa. Lokhu kufaka phakathi izinhlelo zokugcina emakhungwini okulwa emgwaqweni nasemaphandleni, ukuqina kwezinhlelo ezikhulisa, ukuvimbela izimfuno zendawo, ukuxhaswa kwezikhumbuzo, nokusekela izakhiwo ezibangela umhlaba. Ubuchwepheshe buhlobene kakhulu ezindaweni zasemadolobheni lapho izikhala zikhawuva izindlela zokuqhuba ezijwayelekile nezidingo zokunciphisa ukubhukhudluka nemisindo. Ojenene bokwakha be-SDA bahlomula kumakhono okudlulisa umthwalo ngokunembile, njengoba igrothi ivame ukungena ngqo emasimini edwala, idala ubude obuthembekile phakathi kwezitho zomhlaba eziphusile. Ukuhlukaniswa kwembewu zomhlaba nezindawo zedwala ezihlanganisa izinto eziphusile kakhulu nezimfiro zedwala kungenziwa ngokusebenzisa ukukhetha okukhululekile kwezinto zokuhlikihle kanye nokulungisa izici zokuhlikihle. Ubuhlakani bobuchwepheshe be-SDA bunezici zezinhlelo zokufaka ezizwakalayo nezizimele, lapho ukufaka kungenziwa ngezigaba ezahlukene ukusuka emgudwini ophusile kuya emikhakheni edidiweyo kumadamfenisi nezindawo zokumba. Abakhiqizi abasebenzisa lezi zinhlelo baphumelela ekuthuthukiseni ukusebenza kwabo kwezokufaka uma kuqhathaniswa nezindlela zokubhalisa zodonga ezijwayelekile, ikakhulukazi ezindaweni zomhlaba ezinzima. Izingcezu zokuhlikihle ze-SDA zamanje zaklanywa ukuhlinzeka ngokusebenza okujwayelekile ngezimo ezihlukahlukene zephrojekthi, ukusuka ezindaweni ezinamathani ezinsundu nezokukhuculuka kuya kumagagasi e-gnis, i-marble, i-schist, kanye nezinhlaka zamatshe. Ukutshala imali kulwazi lwezingcezu zokuhlikihle ze-SDA nezisebenzi zokuhlikihle ezinekhono kuqinisekisa imiphumela ethembekile yokuzinza komhlaba kanye nokufeza umthwalo wamandla owakhayo ezinhlelweni zokwakha izisekelo.
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