Amapayipi asezingenalwazi akhiqiza ubuchwepheshe obuyisisekelo bokubhola ekuqiniseni imicimbi ye-micropiling nasekwakheni izisekelo ezijulile, asetshenziswa njengokufihla okuphathekayo ngesikhathi sokuthuthuka kwe-borehole ngaphakathi kwezimo zokwakha ezinzima. Lezi tube zensimbi zifakwa emhlabeni ngesikhathi sokusebenza kokubhola, bese zisuswa uma i-borehole ifinyelela ukujula okufanele, kushiywa indlelanhle, eziqine kahle ezilungiselelwe ukufakwa kwe-micropile. Ubuchwepheshe bokubuyiselwa balemapayipi buwuhlukeneyo kumasistimu e-casing aphakeme, buhlinzeka ngokusetshenziswa kokuqashwa okuphumelelayo nezinketho zokusebenza ezilungele imisebenzi lapho kusemthethweni ukuthola ukwesekwa komhlaba ngesikhathi sokubhola. Ekuqiniseni izisekelo, amapayipi asezingenalwazi abalulekile ekuphathweni kokungena kwamanzi angaphansi komhlaba, ukuvimbela ukwehla kwe-borehole emhlabathini ongenakhono noma ongenamkhawulo, kanye nokugcina ukuzinza kweholes ezimweni zokuhlanganiswa lapho i-overburden iguquka kakhulu. Imisebenzi ye-micropiling esebenzisa amapayipi asezingenalwazi ifaka izindlela ezahlukene zokubhola kuhlanganise nokubhola kwe-rotary, ukushaya, nezindlela ze-auger, ngakunye kuthiwa kunqunywa ngokuya ngezigaba zomhlabathi ezithile kanye nezidingo zamaphrojekthi. Amapayipi aregizwa aphezulu ngasikhathi sinye ne-thule yokubhola, ahlinzeka ngesisekelo somhlaba esimaphakathi njengoba i-borehole iqhubeka ngama-strata ahlukeneyo. Le ndlela yokuthuthuka yesikhathi esisodwa ivimbela ukwehla kwe-borehole futhi igcina i-verticality emisebenzini yokwakha ejulile. Izinsiza ezisetshenziswa ngokuhlanganyela namasistimu e-retrievable casing zifaka izingqwembe zokubhola nokufakwa, ama-hammers aphukile, izixhumi zokubhola, kanye nemishini ethize yokubuyisela e-extract amapayipi ngaphandle kokuwakhipha, ivumela ukusetshenziswa kabusha kwe-boreholes ezahlukene. Usayizi nobubanzi bamapayipi ahluka ngokuya ngokuqina kokubhola, izimo zomhlaba, kanye nosayizi obalindelekile be-micropile, kokuhlanganiswa okujwayelekile okuqala kusuka ku-76mm kuye ku-273mm ububanzi. Amapayipi asezingenalwazi abalulekile ikakhulukazi ezinhlelweni ze-geotechnical ezihlanganisa ama-clay apholile, ama-silt layers, ama-sands agcwele, kanye nomhlaba ogama amathambo lapho ukulawula amanzi angaphansi komhlaba nokuzinza kwe-borehole kuyizinkinga ezibalulekile. Amaphrojekthi ezisekelo zedolobha, lapho isikhala sokusebenza sikhulu sithathwa ngama-piles amancane anokusebenza okuphezulu, avame ukuncika ekubholeni okuxhaswe ngama-casing ukuze kufezwe ukusebenza kwamamodi afanele. Amaphrojekthi wokwakha, izinhlelo zokubuyisela, kanye nezindawo zokwakha ezigoqelwe zonke zithola inzuzo ekuthuthukiseni kwe-borehole okuqondile okukhona amalayisense e-retrievable casing. Ngaphezu kwalokho, lezi zikhala zikhombisa ukuba nzima lapho kubholwa ngaphakathi kwezithombe zomhlaba eziguquguqukayo ezihlanganisa izakhiwo ze-rock ezinzile nezinto ezizikhaliphayo, kudingeka izindlela eziguquguqukayo zokubhola nokubhekelela izikhumbuzo zamahole. Kubakhi bezisekelo ezijulile kanye nabageotechnical engineers, amapayipi asezingenalwazi mephula ukwehlisa izindleko zokubhola, kunciphisa ukuchithwa kwezinto, futhi kuthuthukisa ikhwalithi ye-borehole uma kuqhathaniswa nezindlela zokubhola ezingenamapayipi. Ukukhishwa okuphumelelayo nokusetshenziswa kabusha kwamapayipi kuhlawulela ukutshalwa kwezinsiza emisebenzini eminingi, kanti ukuzinza okuhle okutholakala kuhlinzeka ukuthi ukufakwa kwe-micropile olandelayo kuqhubeke ngaphandle kwemibandela eminingi. Izindlela ze-micropiling zanamuhla sezikhetha ukuncika ekubholeni okuxhaswe ngama-casing njengendlela ejwayelekile yokufezekisa ukuvuna, ukuphepha, nezidingo zokusebenza kagesi zokwakha izisekelo ezijulile ezijulile ezindaweni eziyinkimbinkimbi nezimakethe ezinzima.
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