Ama-Truck-Mounted Well Drilling Rigs

Imishini yokumba imithombo ethwalwa ngaphakathi kwemoto ibonisa uhlobo oluthile lwemishini ye-geotechnical eyenzelwe ukufakwa kwemithombo emikhulu, izinqubo zokukhucululwa kwamanzi, nokuphathwa kwamanzi omhlaba emaphrojekthini amakhulu okwakha. Lezi zinhlelo zokumba ezihambayo, ezibekwe kumachasi emoto anamandla, zihlanganisa ukuhamba kalula namandla okumba okujula, okwenza zifanele ukufinyelela ezindaweni ezijulile ze-aquifer nokwenza ukwehla kwamanzi ngendlela ehlelekile emsebenzini wokuhamba. Ukumiswa kwempahla ethwalwa ngaphakathi kwemoto kuvumela abaphathi ukufinyelela ezindaweni ezikude noma ezivamile lapho imishini ejwayelekile yokumba enezinyathelo noma imishini emi ingasebenzi kahle, kodwa kugcinwa amandla nokunemba okudingekayo ukuklama izimbobo ezivame ukukhula ngaphezu kuka-100 metres ububanzi. Umsebenzi wokusebenza kwemishini yokumba imithombo ethwalwa ngaphakathi kwemoto ufaka izindlela eziningi ezilungiselelwe izimo zomhlaba nezajantshi ezihlukahlukene. Izindlela zokumba ezijikayo zibhekwa kuleli qembu, zisebenzisa ukujikelela okuqhubekayo okuhlanganiswe nengcindezi ye-hydraulic ukuze kuthuthuke phakathi kweziqongo ezinzima, ukunikezwa kwemabula, nezimo ze-bhuloho ezizinzile. Abaphathi basebenzisa izincibilikisi ezihlukahlukene zokumba—kusukela ekuphumeleleni komoya ezimweni ezizinzile kuya kumasistimu amanzi aphakathi kwezinkinga noma emhlabathini enamanzi—ukuze kugcinwe ukuzinza kwezimbobo futhi kuqinisekiswe ukufakwa okufanele kwemikhono. Inqubo yokumba ivamise ukufaka ukuthuthuka kwe-auger enezigaba ezingenalutho noma izindlela zokumba ezinezendlalelo, kuye ngezimo zokuhlala ezitholakele nezincazelo ezidingekayo zemithombo. Uma imbobo ifinyelela ububanzi obukhulu, izikrini zemithombo, amaphakethe egravel, nezinto zokuhlunga zifakwa ukuze kuhlangabezane nokungena kwamanzi ngenkathi kuvimbela ukuhluza, into ebalulekile ezinhlelweni zokukhucululwa kwamanzi ze-geotechnical. Imishini yokumba imithombo ethwalwa ngaphakathi kwemoto ithola ukufakwa okukhulu emaphrojekthini amakhulu okuhlinzeka ngokuqondile kokuphathwa kwamanzi omhlaba. Izinhlelo zokukhuculwa kwamanzi ezijulile zinciphisa itheku lamanzi ezindaweni zokumba, zigcina izintaba ziqinile futhi zithuthukisa ikhono lomhlabathi lokwakha izisekelo, ikakhulukazi ezindaweni zasemadolobheni lapho ukwehla kwamanzi okujwayelekile kudala ukungavumi noma ukunyakaza okungamukeleki. Ukuhlolwa kokumba nezinsiza zamanzi kuphinde kube nezinye izicelo, njengoba lezi zikhuni zinga ngwaqa ububanzi be-akhawunti emithonjeni yamanzi yomphakathi nezimbobo zokuhlola izinsiza. Izpecifications zemishini ngokuvamile zifaka amandla okumba atholakala phakathi kuka-300 no-1500 metres kuye ngosayizi wemishini, ngama-diameters embobo ukusuka ku-150mm kuya ku-600mm, okuvumela izilinganiso ezihlukahlukene zamaskrini emithombo nezidingo zokuhlunga. Izingxenye ezintsha ezithwalwa ngaphakathi kwemoto zibonisa izinhlelo zokuqondisa advanced, ukuphatha ampiphu okuzenzakalelayo, kanye nezisetshenziswa zokuhamba ezihlanganisiwe ezithuthukisa ukunemba kokumba nokusebenza kahle ezindaweni zokwakha eziphezulu zasemadolobheni lapho ukunyakaza okuqondile kubalulekile. Ukukhetha imishini yokumba imithombo ethwalwa ngaphakathi kwemoto kuncike kakhulu ezimeni ezilindelekile zokuhlala nezidingo zephrojekthi. Abakhi badinga ukuhlola ukwakheka komhlabathi, ukuzivikela okulindelekile kokumba, ububanzi obudingekayo bemithombo, nezinga lokukhukhula emanzini ukuze baphathe ngokufanele usayizi wemishini nezenzo zokumba. Izimo zomhlaba eziqala kuma-alluvial soils abuthakathaka ukuya kumasandstone aqinile futhi abumba kahle kudinga izindlela ezihlukene zokumba nezipesheli zemishini yokuxhasa. Ikhono lokumba kahle phakathi kwemigqa ehlukahlukene ye-geological ngenkathi kugcinwa izimbobo ezizinzile nokufakwa kwezinhlelo zemithombo ezithembekile kwenza imishini yokumba ethwalwa ngaphakathi kwemoto ibaluleke kakhulu kwezokwakha izisekelo ezithuthukisayo kanye nezinhlelo zokulungisa imvelo ezindaweni ezintsha ze-geological.