Izinsiza eziningi ezisebenza ngokuqondile futhi ezihlinzekwe nge-Double Rotation

Emkhakheni wobunjiniyela bokusekela okujulile kanye nezobuchwepheshe bejometri, amabhokisi amaningi anezikhono eziphindwe kabili avele njengezinsiza ezisemqoka zokuthuthukisa ukusebenza kahle nokuqina ngesikhathi sephrojekthi eziyinkimbinkimbi. Lawa mabhokisi aphezulu akhelwe ngokukhethekile ukwenza izinhlobo ezahlukene zokubhola nokufaka, okwenza abalulekile abasakazi abathintekayo emisebenzini ye- piling, ukuthuthukiswa komhlaba, nezinye izinhlelo ezithinta ubuchwepheshe bejometri. Uhlelo lwezikhumbuzo eziphindwe kabili lwenza kunciphise kakhulu i-torque nokulawula ngesikhathi sokusebenza, kunceda ekufakeni izikhumbuzo ezinkulu, ukuhlanganisa umhlabathi, nokwakha odongeni be-diaphragm. Enhliziyweni ye-rig enezikhono eziphindwe kabili itholakala umshini wayo omusha wokudonsa, owenza kube nokukhishwa kwedrayivu okuhlukile kwethuluzi lokubhola nokufaka. Le ndlela ivumela abakhiqizi ukuthi bafinyelele izinga eliphezulu lokuhlasela ngenkathi kuncipha ukuphepha komhlaba, okubalulekile uma kusebenza ezindaweni ezibucayi. Uhlelo lwezikhathi eziphindwe kabili luthuthukisa ikhono le-rig lokubhola emhlabeni wezindawo ezahlukahlukene, kusukela kumasimi apholile kuya ematsheni aqinile, kuqinisekisa ukuthi lingahlangabezana nezidingo ezahlukene zephrojekthi zokusekela okujulile. Ngaphezu kwalokho, lawa mabhokisi njalo avame ukufakwe nezinhlelo ze-hydraulic eziphambili ezihlinzeka amandla adingekayo kanye nespeeds yokubhola okwenziwayo, uvumela ukuhamba ngokushesha nokunciphisa isikhathi sephrojekthi. Izinsiza ezivamile zama-rigs amaningi anezikhono eziphindwe kabili zifaka ukufaka ama-piles abholile, ama-piles e-Continuous Flight Auger (CFA), nezinye izixazululo zokusekela okujulile. Lawa mabhokisi futhi asetshenziswa ezindleleni zokuthuthukiswa komhlaba ezifana nokuzinza komhlabathi nokufaka umjovo, okuyizinyathelo ezibalulekile zokuthuthukisa amandla okuphatha umthwalo emhlabeni nasekunciphiseni izinkinga zokuhlala. Ngaphezu kwalokho, ukusebenza kwabo okuhlukahlukene kubavumela ukuba bahlale bephindehlisa izidingo zephrojekthi ezahlukene, okubenza kube kuhle ezindaweni zokwakha ezisemadolobheni, ekwakhiweni kwezokwakha, nasemiphakathini yombuso efana nezinsiza zamandla avuselelwayo ezifana namafamu omoya. Uma ukhetha i-rig enezikhono eziphindwe kabili, izincazelo ezithile ezibalulekile kumele zicatshangelwe ukuqinisekisa ukusebenza okuhle kwezinselelo ezithile. Lokhu kufaka phakathi ukujula okukhulu kokubhola, amandla e-torque, kanye nohlobo lwezinhlelo ze-hydraulic ezisetshenziswa. Ngaphezu kwalokho, izinto ezifana nesisindo se-rig jikelele, izici zokunyakaza, kanye nokuhambisana nezinsiza ezahlukahlukene zokubhola kufanele zihlolwe ngokwezimo zendawo yephrojekthi kanye nezidingo zokuhamba. Ukuqonda amandla emthwalo kanye nekhono lokuphatha izindlela ezahlukene zokubhola kungaba nomthelela ekwahluleleni, njengoba ezinye izinhlelo zingase zidinge izinsiza ezikhethekile noma amathuluzi ukuze zifezekise imiphumela efunwa. Ngokuhlanganisa, amabhokisi amaningi anezikhono eziphindwe kabili abalulekile emikhakheni yobunjiniyela bokusekela okujulile kanye nezezehlakalo. Ikhono lawo lokuphatha imisebenzi ehlukeneyo ngokunembile, lihlangene nomklamo walo oqinile nezikhono zokusebenza ezithuthukisiwe, lenza kube yinsiza engakhathalelwa kwabayiphakamisayo ezifuna ukuthuthukisa ukusebenza kwabo kokubhola. Ukutshalwa kwezimali kulezi zisetshenziswa ezikhethekile akuthuthukisi kuphela ukusebenza kwephrojekthi kodwa futhi kunomthelela ekuzuzeni imiphumela ewusizo ezinhlelweni zokwakha ezijulile nakwi-projekthi ze-geotechnical.