Ama-compressor omoya wokuphosa i-shotcrete ayimishini ebalulekile ekuzinziseni umhlaba nasemkhakheni wobunjiniyela bezisekelo ze-geotechnical zanamuhla. I-shotcrete, eyaziwa nangokuthi i-sprayed concrete noma i-gunite, iyindlela yokufaka i-concrete ethunyelwa ngama-pneumatics ethumela i-concrete enezinga eliphezulu lokusebenza ezindaweni ezinzima ukufinyelela, ezakhiweni eziphansi, nasezimo ze-geo ezinzima. Ama-compressor omoya anikeza umoya ophoqelelwe odingekayo ukuze adlule izixazululo ze-concrete noma ze-mortar ngezinhlaka zokuhambisa kanye ne-nozzles emaphusheni wokumba, ezindaweni ezisemathuneni, ezindaweni zokusebenza, nasemphakathini omhlaba. Lezi zikhompuyutha kufanele zilethe umoya ophoqelelwe ongamkhawulo, okujwayelekile phakathi kuka-6 no-8 bar kuhlelo lwe-shotcrete lwe-wet-mix kanye no-pressure ephezulu kuma-dry-mix processes—kuqinisekisa umthamo we-concrete ophumelelayo, ukuhlanganiswa, nokwakheka okuqinile kwephezulu efakwe. Ikhono le-compressor, elilinganiselwa ngamamitha cubic ngehora noma i-CFM, libeka ngqo impilo yokufaka i-shotcrete nemisebenzi yokuzinzisa umhlaba. Ezindaweni eziphakeme zokwakha izisekelo kanye nezinsiza zomgodi, izinhlelo ze-shotcrete zibhekana nezinselelo ezibalulekile ze-geotechnical, kufaka phakathi ukuzinza komhlabathi emashalofini amaphayili, ukwakhiwa kwemikhono, ukuqiniswa kwezindonga ze-diaphgram, nokuhlanganiswa kwezikhala emhlabathini ophukile noma we-karstic. Uma bekhula amaphayili, ama-drilling rigs, noma benza imisebenzi yokwenza amasango, osomabhizinisi bavame ukufika ezimweni ezingenakuzinza zomhlabathi, ukufafaza kwamanzi, noma ukwakhiwa kwama-geological oguquguqukayo kudinga ukuzinza okuphuthumayo. I-shotcrete efakwe ngama-compressor omoya anjengama-gesi neziphumo ipha ukweseka ngokushesha, ivale izingxenye ezinezimpande, futhi yehlisa ukungena kwesikhukhukazi emkhakheni wezisekelo. Le ndlela ibaluleke kakhulu emhlabeni ohlanganisiwe, lapho ukufakwa kwendabuko kwe-concrete kungase kube nzima ngenxa yezinkinga zokufinyelela, izimo zamanzi, noma isidingo sokufakwa kwe-concrete okuhamba phambili, okwenziwa ngaphandle kokubeka kakhulu imiyalo. Ukukhethwa kwemishini yokucindezela umoya ukuze usebenze ku-shotcrete kuncike emkhakheni wephrojekthi, isikhathi, nezimo ze-geological. Ama-compressor akhishwe nge-diesel ashintshashintshayo ajwayelekile emsebenzini wokuzinzisisa wesikhashana noma owenzelwa indawo ethile, kanti ama-compressor anamandla amakhulu asekelwa imikhankaso yokwakha ejulile. Osomabhizinisi kufanele bacabangele izidingo zokuhlanzeka komoya—ama-compressor angena kufakazela ukuthi kuphumelelwe i-shotcrete—futhi izinhlelo zokulawula ingcindezi eziqinisekisa ukufana kokufaka. Usayizi wemishini uhambelana ngqo nezinga lokuhambisa i-concrete; ama-compressor amancane akhiqiza ukuveliswa kwe-application nokukhulisa amaphuzu angaphelele, kanti ama-uniti amakhulu akhuphula izindleko zokusebenza. Izimo zomhlaba ezifana ne-clay, i-silt, udaka oluphukile, noma umhlabathi ogcwele amanzi zisebenza kokubili idizayini ye-shotcrete mix kanye nezidingo zomoya ukuze kuzuzwe ukufakwa okukhulu nokusebenza kahle kwezakhiwo. I-shotcrete enezinhlelo zokucindezela umoya ifakwe kakhulu ezimweni zokwakha eziphakeme kufaka phakathi ukwakha izakhiwo ezikhona, ukwakhiwa kwe-caisson enkulu, ukweseka ukumba bhasamabhaso, ukuqinisa ama-tunnel boring, kanye nokwakha izindonga ezindaweni ezingazinzi. Le ndlela ibeka ezinye izicelo zokwakha kwezakhiwo ezinhle nezokulungisa okuphuthumayo, lapho ukweseka komhlaba okuphuthumayo kuyadingeka ukuvikela ukuwa noma ukuphuka kwezinto. Izinzuzo zemvelo nezokusebenza zifaka phakathi izidingo zokunciphisa izikhwama, izikhathi zokwakha ezisheshayo, nokuhambisana nezimo ezinzima. Ubuchwepheshe be-compressor bamuhla obuhlanganiswe nezinhlelo zokulethwa kwe-shotcrete bubonisa ikhono eliyisisekelo kumakhontileka ezakhiwo abaphatha izinselelo ze-geotechnical ezinzima ngaphakathi kwezimo ezihlukahlukene zomhlaba nezind rocks.
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