Izinto ezikhethekile ezisekelwe ku-Hydromills

Izinsiza ezikhethekile ezisemqoka ze-hydromills zimele umkhakha oyingqayizivele wezinsiza ze-hydromill eziklanyelwe ukwakha izisekelo eziyinqaba, kube nomkhawulo ophakeme ophathelene nephuzu le-hydromill elihambisana nezinhlelo zokuhlinzeka ezikhethekile zokuhamba nokusebenza. Lezi zinsiza ziqanjwa ukuthuthukisa umsebenzi wokugcina umhlaba ophakeme kwezimayini ze-geotechnical ezidinga ukugwema izinqaba ezilandelanayo noma eziseduze nezinkanyezi. Ekuqondeni ukwakhiwa kwezisekelo eziyinqaba, izinsiza ezikhethekile ze-hydromills zisebenza njengezisombululo ezisetshenziselwa ukuphuma nokuqondanisa umhlaba, zithatha njengamathuluzi ayinhloko okwakha imithwalo ye-diaphragm, ama-curtain amamitha apholile ahlaliwe we-bentonite, ama-alignment e-pile secant, kanye nemithwalo yokuhlanganisa umhlabathi ne-cement. Uhlelo lwabo lwezokuphatheka lwenza kube lula ukuphatha nokulawula ukusebenza uma kuqhathaniswa nezinsiza zokuphumula ezijwayelekile, kuvumela abaqhuba amaphrojekthi ukuba bafinyelele kulezo geometries necala elidingekayo ezingeni eliphakeme lezokwakha izisekelo eziyinqaba zanamuhla. Lezi zinhlelo zibaluleke kakhulu ezindaweni ezinomthelela wemvelo noma ezithintekayo lapho izinqubo zendabuko zokuphakela ama-sheet piling noma zokwakha i-tremie concrete zikhunga izinkinga zokuhamba. Umqondo wokusebenza kwe-hydromills ezikhethekile ezisemqoka uhlanganisa ukusikeka kwe-rotary kanye nokuhamba okuqhubekayo kokughcwalisa. I-hydromill head ene-multi-tooth eqhume eqondile, ngokuvamile efakwe kumast eqinile evulekile ku-chassis ye-carrier, ikhipha umhlabathi nezintaba zomhlaba ngenkathi i-bentonite slurry noma i-polymer-stabilized fluid ehambisana nohhafu ihlola odongeni be-borehole, ivimbela ukuwa, futhi iphonsela ezindaweni zokuphakelwa izinto ezikhiphwe. Ngokuya ngohlobo, izinsiza zingasebenza emkhakheni we-syncable wall ukuze kuqedwe ama-curtains alula noma imiqulu eminingi yokuphuma yokwakha i-diaphragm wall. I-chassis ye-carrier iqinisa isikhumba sokusika ngezinhlelo ze-outrigger futhi inikeza amandla kumaphampu e-hydraulic, izinhlelo zokuhamba, nezinsiza zokubeka. Izinhlelo ezitholakalayo zikhuluma ukusuka kumamodeli amancane e-carrier afanele ezindaweni ezikhethiwe ezisemizileni nasezindaweni ezimaphakathi, kuya kumasistimu amakhulu akwazi ukusika ubukhulu obungaphezu kuka-100 amamitha ezimo zomhlaba ezixubile. Izinhlobo ezibalulekile zifaka phakathi ama-hydromill head aphendukayo ukuze kube nemithwalo enobubanzi, ama-design agcizelelwe freqiwe anweba ukuphathwa kokuhlola okuningiliziwe, kanye nezinhlelo zokuphuma eziphezulu ezicubungula izimo ezahlukeneyo zomhlaba. Izinhlobo ze-carrier zihluka ukusuka ezithuthwini ezinezinjini ukuze kuqhamuke ukuhamba ukufika ezindaweni ezahlukene kuya kumapulatifomu aphakanyisiwe anikeza ukuzinza okuphezulu ezindaweni ezinamahlathi. Izinkomba zokukhetha ze-hydromills ezikhethekile zisebenza ngokubhekisela ebubudlweni nasekuthambekeni kwe-walls ezidingekayo noma ezivimbela, ukuhlanganiswa kokuhluka kwezimayini zomhlaba nezintaba, izinhlelo zokucisha i-slurry, ukufinyelela endaweni nezindawo zokusebenza, kanye nezinga elidingekayo lokukhiqiza. Abachwepheshe kumele bahlaziye isivinini sokusika se-hydromill (amitha ngenyanga), ukunemba kwesikhumba kokuphakela (ngokuvamile ±50–100mm), izidingo zamandla okuhamba okuqhubekayo, kanye nekhono lezinsiza ukugcina izinga lesikhumba esinqunyiwe, ngokuvamile ±1% yobubanzi obuphelele. Izikhumbuzo eziphumelelayo zifaka phakathi i-DIN 4113 (ukwakha ama-pile ahloliwe), i-EN 1538 (ukwakhiwa kwe-diaphragm wall), i-EN 14199 (okuphathelene neziphango ezincane), kanye ne-ISO 6892 (izindinganiso zokuhlola ukugxila). Ezinye izincwadi zomthombo zifaka phakathi i-ISSMGE (International Society for Soil Mechanics and Geotechnical Engineering) imihlahlandlela nezinhlelo zomphakathi ezibhekela ukulawula amanzi phansi nezinhlelo zokuphathwa kokughcwalisa emisebenzini yokwakha izisekelo eziyinqaba.