Izinsiza Zokubhoboza Izimbobo Ezimbili

Ama-Rig amaDual Fluid awumsebenzi ojwayelekile okhethekile wokwenza i-double fluid jet grouting, ubuchwepheshe bokuthuthukisa umhlaba obusebenzisa izifutho ezimbili ezahlukene ukudala izakhiwo ezingaphansi zomhlabathi ezizinzile kanye nezivikelo zokudlula amanzi. Lezi zikhala zibalulekile ekuwakheni odongeni be-diaphragm, ama-curtains wokunqamula, odongeni be-secant pile, nezinye izinto ezinzulu ezidinga ukuhlela emhlabeni ngokunembile nokuhlanganisa. Le teknoloji iyisizathu esabalulekile kubakhiqizi bezisisekelo ezinzulu abasebenza endaweni ezimanzi, ezithintekile, noma lapho umhlabathi ungazinzi khona lapho izindlela ezivamile zingase zibe nezinkinga noma zingabi nezezimali. Izinhlelo ze-double fluid jet grouting zisebenza ngokwakhiwa kokufaka okuseshini kokuphakeme okuhlangene nenye i-fluid yokuhlakazeka/ukuhambisa, ngokuvamile amanzi noma ukuhlangana komoya-namanzi, nge-nozzles ezikhethelwe ukuklanywa ezikhulwini. I-fluid ephakeme kakhulu ihlukanisa umhlaba ozungezile ngenkathi igrot iwagcwalisa izikhala ezidalwe futhi ifinyelela kumhlaba ophukile. Le ndlela ye-dual-stream ivumela abakhiqizi ukuba bafeze ukuthanda amakhanda amakhulu, ukuthuthukisa ubuhlakani, kanye nokulawula izinga elingcono uma kuqhathaniswa nezinhlelo ezilodwa kemithi. Ama-jet athunyelwa kusukela phezulu uye phansi, kungase kube yokusebenza eqinile ukwakha odongeni bezomaka noma emjikelezo ukuze kudaleke amakholomu ajwayelekile asebenza njengezivikelo ezixhunywe noma izakhiwo eziphakamisako. Izicelo zifaka izimo eziningi zezifundo ezinzulu. Emikhakheni yokulandela amanzi, ama-rig amaDual Fluid akha amakholomu e-jet grouting aqhubekayo noma aphindaphindayo anciphisa ukuvuza phakathi kwe-aquifers nezindawo ezithintekile. Ekukhuleni kwamadonga be-diaphragm, amakholomu e-jet grouting ayisisekelo athuthukisa ukuqina komhlaba futhi anciphisa ukufika kwamamaki emanzini ngesikhathi sokukh excavating waloki we-diagram wall. Odongeni be-secant pile, izinto ezihlinzekwe nge-jet-grouting zikhonza njengezindonga eziyinhloko ezinikeza ukwesekwa kwezakhiwo kanye nokulawula ukuhamba kwamanzi. Lezi zikhala ziphinde zixazulule ukuhlela umhlabathi ngaphansi kwezindawo ezikhona, kunciphisa ingozi yokuhlala nokuhlukumezeka kumadolobha. Izinhlelo zezimoto zihluke ngokuya ngezidingo zokusebenza. Ama-rig we-double fluid ajwayelekile aqukethe ama-pump units aphakeme (ngokuvamile 20–40 MPa kumalinesi e-grout kanye no-10–20 MPa kumalinesi amanzi), izinhlelo zokwabelana nge-fluid ezimbili ezinezilinganiso ezizimele, amakhanda okumba aguquguqukayo anezinhloso ze-jet, kanye nemishini yokuphakamisa/nokubeka. Ezinye izinhlelo zifaka ukusebenza kwe-fluid ezintathu, zingezelela umoya ophakanyisiwe njengokugeleza kwesithathu ukuze kuthuthukiswe ukuhlinzwa nokuphakama kwamakhanda. Izithuthukisi zifaka izinhlelo zokulawula ukuphakama ezizenzakalelayo, ukulandelela ingcindezi ngesikhathi sangempela, kanye nohlelo lokuhlola izikhala kumakhanda ukuze kuqinisekiswe ukuvela okuqhubekayo kwezakhiwo. Izinkomba zokukhetha zigxila ezintweni ezithile zobuchwepheshe. I-pressure yokusebenza ephezulu ibeka ubukhulu bamakhanda angafinyeleleka nendlela yokungena; ukucindezela okuphezulu kuvumela amakholomu amakhulu kodwa kudinga umklamo wezakhiwo oqinile. Izinga loku-flow kwe-grout kumele lihambisane nokusheshisa kokufaka nezimo zomshini nezemhlabeni. Iziqu ze-rotational kanye nokunemba kokubeka kuthinta i-geometry ye columna, okukodwa kubaluleke kakhulu ezindaweni ezikhonjiswa. Ukwakheka komhlabathi, okuhlanganisa uhlobo lomhlaba, amandla okuvinjwa angahlali, nezimo zamanzi, kuthinteka ngqo ukukhetha i-nozzle, ukwakheka kwefluid, nezimo zokusebenza. Izimo zemvelo, njengezithiyo ze-vibration nemithetho yomsindo emakhaya, zifaka ukufaka izinhlelo zokuhamba ze-dual-fluid ezenza imisebenzi ethulile kunokunye okuphakanyisiwe. Izindinganiso zemboni eziphethe i-double fluid jet grouting zifaka i-DIN EN 12716 (Ukusetshenziswa kwemisebenzi ye-geotechnical ekhethekile), ehloselwe umklamo, ukuqhutshwa, nezimfuneko zokuphakanyiswa kwekhwalithi, kanye ne-ISO 15702-1 ephathelene nezichazamazwi nemigomo ye-jet grouting. Imiyalo eyengeziwe ibonakala ezindinganisweni zendawo (i-French NF P94-155, iziqondiso ze-German DGGT) nezinhlinzeko zobuchwepheshe ezikhethekile ezivela ku-ICOLD nasemiphakathini yezobuchwepheshe. Izinkomba zenkontileka ngokuvamile zibuza ama-columns okuhlola, izivivinyo zamandla, kanye nezinhlangano ezithombile zokubeka amakhanda ukuze kuqinisekiswe ukuqhubeka kwezivumelwano nesimo esifanele sezakhiwo.