Izitolo ze-cement zisebenza njengezithako ezibalulekile ezenzakalweni zokwakha ezinzulu nase-micropiling, zinikeza indawo yokugcina, ukwakhiwa, kanye nokusabalalisa okulawulwayo kwe-cement grout ezinhlelweni zokufaka zokuqhubeka okuphezulu. Lezi ziqu zihlukeneyo zenza ukuba abathwali bakwazi ukugcina izinga le-grout nokuqina kwayo njalo esikhathini eside sokusebenza kwe-micropiling, lapho ukwakheka kwe-cement okuqondile kuthinta ngqo ukwakhiwa kwe-pile, amandla okuthwala, kanye nokusebenza kwesakhiwo kwesikhathi eside. Izitolo ze-cement zibalulekile ikakhulu ezindaweni zokwakha zasemadolobheni lapho ama-borehole amaningi edinga ukuhlanganiswa ngesikhathi esisodwa noma ngokushesha, njengoba zinciphisa imikhawulo yokuhambisa yokuxuba futhi zinciphisa isikhathi sokulungiselela endaweni. Izitolo ze-cement zanamuhla zixhumana neziteshi zokuxuba ezizenzakalelayo, zivumela abatshali ukuthi bahlanganise i-cement, isihlabathi, izengezo, namanzi ukuze kuhambisane nemfuneko ye-grout ethile yephrojekthi ngaphandle kokuphazamiseka ezinqubweni zokubhoboza. Le msebenzi ongenamkhawulo ubalulekile ekufakeni i-micropile kahle ezimweni zejiyoloji ezehlukene, kusuka kumathafa e-clay nase-silt kuya ku-gravel eqinile nasezikhukhulweni ze-rock eziphukile. Ukuhlolwa kwezobuchwepheshe kwezitolo ze-cement ku-micropiling kudinga ukucatshangelwa ngokucophelela kwemigudu yokugeleza, izidingo zengcindezi, kanye nezindlela zokuhlola i-grout. Izitolo ezinkulu—ezivela ku-15 kuyi-100+ amakhube amitha—zibekwe ngendlela ehlakaniphile ezindaweni zomsebenzi ukuze zinciphise ukujikeleza kwemibhobho kanye nokulahlekelwa kwengcindezi ngesikhathi sokufaka. I-grout elungisiwe kulezi zinhlelo ivamise ukufinyelela amandla okucindezela phakathi kuka-20 no-60 MPa, kanye nezilinganiso zamanzi-i-cement ezilungiswe ngezimo zomhlabathi, ububanzi be-pile, kanye nemithwalo yokwakha. Abasebenzi basebenzisa ubuchwepheshe bokudlidliza noma bokujikeleza ukuvimbela ukuba i-cement ihlukaniswe futhi ukuqinisekisa ukuhlanganiswa okuhle, izici ezibalulekile lapho kuhlanganiswa kwi-strata engazinzile noma ukufinyelela ezindaweni ezinzima ezingaphansi. Iziphumu zengcindezi ezixhunywe kuzinhlelo zokukhishwa kwe-silo zinganikeza i-grout ku-10 kuya ku-40 bar, zivumelanisa nokuhlanganiswa okuphumelelayo kwezindlela ezinzima zokufaka. Izicelo zezitho ze-cement zifaka phakathi kwemisebenzi yokwakha ezindlini, ezentengiselwano, nasezimbonini lapho ama-micropiles esebenza njengama-elementi aphakeme noma ancedisayo okuthwala. Umhlabathi ongcolile noma ophakathi—kuhlanganisa i-clay ye-organic, ukugcwaliswa, kanye nezindonga eziphansi—uvame ukufuna i-micropiling ene-cement grout enezinga eliphakeme ukuze kufinyelelwe kumazinga athile nokuthwala. Ukuvuselelwa kwamahora, ukuthuthukiswa kwemigwaqo, kanye nokuphakamisa izakhiwo zomlando kuvame ukungqongqoza i-micropiles ngezisombululo zokuletha ze-cement ezinikezwa izitolo ezinkulu. Ezindaweni ezinamakhono aphansi zasemadolobheni lapho imishini yokushayisa amaphilisi noma imishini ye-diaphragm ingasebenza, i-micropiling esekelwa ngohlelo lwezitolo ze-cement olunokwethenjelwa ibonakala njengephuzu elikhethwayo lokuthuthukiswa komhlabathi. I-geology yomphakathi ikhipha izimfuneko ze-silo; imisebenzi yasolwandle idinga izengezo ezivumelana nokuphazamisa kanye ne-cement evumelana ne-sulphate, kanti ukufaka okujulu kwasemadolobheni kungase kudinge izixazululo eziphansi zokushisa noma ezivela ku-pozzolanic ukuze zilawule umehluko wezinga lokushisa. Ukuhlanganiswa kokuhlola ingcindezi ngesikhathi sangempela, ukulawula okuzenzakalelayo kwephampu, kanye nezinhlelo zokubhalisela ukuxuba kudlulele izitolo ze-cement emkhakheni ophilayo wempahla yokuphepha kwemikhiqizo, okuxhasa ngqo ukuhambisana kwabathwali nezindinganiso zokuhlola ze-ISO 14688 kanye nezithembiso zokusebenza kwephrojekthi.
Izigayo ezikhuphuka phezulu, noma zikhona ngokuboshwa noma ngokuwelwa, zidlala indima ebalulekile ekuhlanganiseni nasekulawuleni izinto ezinkulu, ikakhulukazi emkhakheni wokwakha izisekelo ezijulile kanye nomsebenzi wezobunjiniyela bokuhlola umhlaba. Lezi zakhiwo zenzelwe ukugcina kahle i-cement, ama-aggregates, nezinto ezihlukahlukene ezisetshenziswa kumaphrojekthi wokwakha. Zibalulekile ekugcineni ukuhamba kwezinto ezinhlelweni zokwakha, ziqinisekisa ukuthi amaqembu okwakha anokufinyelela okuqondile kwizinsiza ezidingekayo kumaphrojekthi ezisekelo ezijulile, ukujula, nezokuthuthukiswa komhlaba. Umsebenzi wezithombe eziphakeme ujwayelekile kodwa ubalulekile kakhulu. Zakhiwe ukuze zikwazi ukumelana nengcindezi yezinto ezigcinwe, lezi zigayo zisebenzisa noma imiklamo eboshiwe noma ewelded, ethokozisa izidingo ezihlukene zamaphrojekthi. Izigayo eziboshiwe zinikeza inzuzo yokuhlanganiswa kalula nokuhlakazeka, okwenza kube kuhle kuma-installations wesikhashana noma kumaphrojekthi adinga ukuhamba. Ngakolunye uhlangothi, izigayo eziboshwe zinikeza ukuzinza okuthuthukile nokuhlonza kwesakhiwo, ezifanele ama-installations esikhathini eside lapho ukukh exposure kwezimo zemvelo kuyiqiniseka. Zombili izakhiwo ziqukethe ubuchwepheshe obuphambili ekwakhiweni kwazo, ziqinisekisa ukuthi zihlangabezana nezindinganiso eziyinkimbinkimbi zemboni yokwakha. Iziphumo ezibalulekile zezigayo eziphakeme emisebenzini yokwakha ezisekelweni ezijulile kanye nezobunjiniyela bokuhlola umhlaba zifaka ukugcina i-cement yokukhiqiza ikonkrithi, kanye nokugcina ama-aggregates ahlukahlukene asetshenziswa ezinhlelweni zokumisa umhlaba nokuthuthukiswa komhlaba. Ikhethelo lokugcina izithako ezinkulu endaweni yokwakha kuholela ekwandeni kokusebenza kahle nokunciphisa isikhathi sokuphumula, njengoba abathengisi bengakwazi ukuhlanganisa nokuphosa ikonkrithi ngaphandle kokubambezeleka okuhlobene nokuthengwa kwezinto. Ngaphezu kwalokho, ukuba nezinqubo zokugcina ezihlukile kusiza ekugcineni ikhwalithi yezinto, kuvimbela ukungcoliswa nokwenza isiqinisekiso sokuthi izilinganiso zokuhlanganiswa zihlala ziqondile ukuze kuqinisekiswe ukuzinza kwesakhiwo. Izincazelo ezijwayelekile zezigayo eziphakeme zihluka ngokuya ngenhloso yazo, kodwa ngokujwayelekile zifunwa ngenqubekela phambili ukusuka ku-30 tons ukuya phezulu kwe-1000 tons, nezilinganiso ezifikela ku-5 metres noma ngaphezulu. Ngaphezu kwalokho, zingafaka izici ezifana nezinhlelo zokuhlunga uthuli, izinkomba zekhanda, nezinsiza zokuhlanganisa zokusebenza okukhethekile. Ngesikhathi sokukhetha isigayo esiphakeme, kukhona imikhawulo eminingi edingeka, kuhlanganisa nobuningi bezinto ezizogcinwa, uhlobo lwezinto, izimo zesizinda, kanye nesikhathi salesi projekthi. Kubalulekile futhi ukucabanga ngezinto ezifana nokulula kokufinyelela ukuze load and unload, kanye nokuhlangabezana nemithetho yasendaweni neziqondiso zokuphepha. Ngokufingqa, izigayo eziphakeme, noma zikhona ngokuboshwa noma ngokuwelwa, zibalulekile emikhakheni yezenzo ezijulile nezobunjiniyela bokuhlola umhlaba. Zihlinzeka ngama-solutions aqinile ukuze kugcinwe kahle izinto ezinkulu, kuthuthukisa ukuhamba komsebenzi nokukhiqiza ezindaweni zokwakha. Ngokuqonda izincazelo zazo nezinhlelo, abathengisi bangakwenza izinqumo ezihlakaniphile ezokwandisa imiphumela yephrojekthi yabo ngenkathi behlale bel遵循 izinqubo ezingcono zemboni.
Ezingeni lokwakhiwa kwezimiso eziyisisekelo ezijulile nezingxenye ze-geotechnical, ama-silos aphakanyisiwe (aphansi) binomsebenzi obalulekile ekugcineni nasekubhekaneni nezinto ezinkulu, ikakhulukazi umjobo nezinye izinto ezingezelelwayo ezibalulekile ukuze kugcwaliswe kahle ukusebenza kwekhonkrithi. La ma-silos aklanywe ngemiklamo elungile, aphakanyiswe ukuze kube lula ukuhlanganiswa ezindaweni zokwakha ezinesikhala esincane sokuphakama. Ngokungafani ne-silos ezijwayelekile eziphezulu, ama-silos aphakanyisiwe anikeza ukufinyeleleka okukhulu nokunethezeka, kwenza kube isixazululo esifanayo kumaphrojekthi okwakha adinga ukulayishwa nokukhishwa kwezinto njalo. Ukusebenza kwamasilos aphakanyisiwe kulula kodwa kunempumelelo enkulu. La ma-silos athunyelwe ngezinhlelo ezithuthukisiwe zokuhlobisa ezikhuthaza ukuhamba kahle kwezinto ezigcinwe ngaphakathi, kunciphisa ingozi yokuhlangana noma ukuhlangana. Ukuklanywa kwemiklamo ephakanyisiwe akwenzi kuphela kube lula inqubo yokulayisha kodwa futhi kuqinisa uzinzo, kunciphisa amathuba okuzamazama ngesikhathi sokuhamba noma ngaphansi kwezimo zezulu ezinzima. Ngokuvamile akhiwe esinyathelweni esinamandla, la ma-silos akhiwe ukuba aqinise ukuphila okukhulu emhlabeni wezokwakha, uqinisekisa ukuqina nokuhlala isikhathi eside. Ezinhlelweni zokwakha ezijulile neze-geotechnical, ama-silos aphakanyisiwe anemisebenzi ehlukahlukene ebalulekile. Avame ukusetshenziselwa ukugcina umjobo, i-fly ash, nezinye izinto ezingezelelwayo ezibalulekile ezithinta izindlela zokuthuthukisa umhlaba, njengokuhlala komhlabathi kanye nokuxutshwa okujulile. Ikhono lawo lokugcina izinga lezinto kube sekupheleni kwamasikhathi isikhathi eside lenza libaluleke kakhulu kumaphrojekthi adinga ukwakheka kwezinto namazinga, njengokuphakamisa ama-pile nokusekelwa kwesisekelo. Ngaphezu kwalokho, usayizi wabo omncane wenza kube kufanelekile ezindaweni zokwakha ezisemadolobheni lapho isikhala siwumkhawulo, kuvumela ukuhweba kwezinto ngaphandle kokuphazamisa imisebenzi eqhubekayo. Lapho ukhetha i-silo ephakanyiselwa iphrojekthi ethile, kufanele kubhekwane nezincazelo ezibalulekile ezithile. Umthamo we-silo ubalulekile, njengoba unquma ukuthi bangakanani izinto ezingagcinwa endaweni ethile nanoma yisiphi isikhathi. Imithetho ejwayelekile yokuphastheka iqukethe indlela eshintsha ngokuvamile kuze kube phezulu kwamathani ambalwa, kuhambelana nosayizi wephrojekthi. Ngaphezu kwalokho, izinto ezifana nezinga lokukhishwa kwe-silo, elithinta isivinini sokufinyelela kwezinto, kanye nohlobo lwemishini yokuhlobisa olusetshenziswe kuyadingeka ukuze kuqinisekiswe ukuphathwa kwezinto okuphumelelayo. Ukukhetha i-silo enezici zokufudumeza eziphumelelayo nakho kubalulekile ukuze kugcinwe izinga lezinto, ikakhulukazi ezimweni ezifudumele. Ekupheleni, ama-silos aphakanyisiwe (aphansi) angama-sethulo abalulekile embonini yokwakha izimpisi eziyisisekelo nendawo ye-geotechnical, eqinisekisa izixazululo zokugcina ezisebenzayo zezinto ezinzima ezifana nomjobo nezinto ezingezelelwayo. Ukuklanywa kwawo kanye nokusebenza kwawo kunakekela izidingo ezikhethekile zezindawo zokwakha, kukhuphula kokubili umkhiqizo nokuphepha. Ngokubheka izibonelo ezibalulekile nezidingo zokusebenza, amabhizinisi angakhetha i-silo ephakanyisiwe efanele ukuhlangabezana nezidingo zabo zokusebenza futhi ukuqinisekisa ukuphumelela kokuphothulwa kwemisebenzi yabo. Kungaba ukuthenga noma ukujolisa, la ma-silos ameleka imali ebalulekile emikhiqizweni yokwakha yanamuhla.
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