Imishini yokufaka emisebenzini yokwakha izisekelo ezijulile ifaka phakathi imishini ethile namathuluzi abalulekile ukuze kukhishwe, kubhujiswe, noma kumiswe izitsha nezinto zokwakha izisekelo emhlabathini. Lezi zinhlelo zibalulekile ekuqaliseni izakhiwo ezizinzile ezimweni ezinzima zomhlabathi nezisezingeni eliphansi lapho izisekelo ezishisayo zinganele. Ukukhetha nokuthunyelwa kwemishini yokufaka kuncike ezintweni eziningi kubandakanya ukuhlanganiswa komhlabathi, amamitha emanzini omhlaba, ubukhulu obudingekayo, izidingo zomthwalo, nezithiyo zephrojekthi. Imishini yokufaka imele enye yeziqu ezinzima kakhulu zemishini yokwakha izisekelo, edinga abatshali bezempi abanobuchwepheshe obukhulu nolwazi ngezinsiza ze-geotechnical ukuze kuqinisekiswe ukumiswa okufanele nokwakhiwa okunempilo. Izindlela eziyinhloko zokufaka ezisetshenziswa emisebenzini yokwakha izisekelo ezijulile zifaka phakathi ukuhweba imijondolo, ukunqunywa kwe rotary, ukuhweba okuqhubekayo kwe-augur (CFA), nezindlela zokufaka ezishayayo. Abashayeli bemijondolo banikela ngamandla aphezulu ukuze bangene izinsiza zosilika ze-H, amapayipi evaliwe, nezimijondolo eziphathekayo emathafeni ahlanzekile nakwezimeko zempucuko enkulu. Imishini yokubhola eqhutshwa ngama-kelly bars noma izinhlelo zokuhweba nge-rotary ivula izikhala emigudwini efanelekile, ikakhulukazi emithini eqinile lapho uketshezi lokubhola noma ukwesekwa kwe-casing kugcina ukuzinza. Ama-hammers akhulayo kanye nabakhiphi bangathinta ukunyakaza okukhulu ukuthuthukisa ukuhamba komhlabathi, kuvumela ukuhamba okusheshayo emathafeni amsandayi ngenkathi kunciphisa ukuphazamiseka komhlaba nezinga loud. Izinsiza zokuphuza amanzi ziyasiza ekwelapheni kabusha kwezinhlaka zebhulashi ezimfishane nezinhlaka ze-clay, kuthuthukisa ukuhamba ngokukhipha ukuvimbela komhlabathi nezimo zokpressure emanzini. Ukukhetha imishini kudinga ukuhlola ngokucophelela i-geology ye-subsurface, ethola ngocwaningo lwezindawo nezinhlolovo ze-geotechnical, kanye nezidingo zokwakhiwa ezichaza ubukhulu bezisekelo, ikhono lokuthwala umthwalo, nezimo zokuhluka. Umhlabathi omncane onama-drainage amahle uphendula kahle ezinhlosweni zokuhweba nezindlela ezishayayo, kuyilapho ama-clay aqinile nezinhla ezixubile zivame ukufuna ukuhweba noma izindlela ze-CFA ezinamathuluzi ekhethekile okushayisa nezinye izinhlelo zokuthumela uketshezi. Abaklami bezisekelo babambisana nabachwepheshe bemishini ukuze bahambise amakhono okufaka nezimo zomhlabathi, kuqinisekiswe ukuthi imishini ekhethiwe ingafinyelela ubukhulu obudingekayo bokuhlola ngenkathi igcina ukujula kwezakhiwo, ukujula, nokulungisa okuqakathekile kokusebenza kwezakhiwo. Ukusebenzisa imishini yokufaka kuncike ezinhlelweni zokwakha izakhiwo zomphakathi kubandakanya izakhiwo eziphakeme, izindawo zokukhiqiza, izikhumbuzo ezikwi-oyinti, ukwakhiwa kwezinqaba, kanye nezinhlelo zokuthuthukisa umhlaba. Imishini yokufaka yamanje ihlanganisa izinhlelo zokubheka ukuqoqa idatha yokumelana nokufaka, ukuhlolela ingcindezi ye-tip, nokuvuma ikhono lemijondolo. Ukulandelwa kahle kokufaka, isikhathi phakathi kwemijondolo eduze, nokwazi kahle imiphumela yokuphazamiseka komhlabathi okuvela ezitsheni ezikweletayo konke kuthinta impumelelo yephrojekthi jikelele. Abakhi nezesekeli zenkampani yokwakha bakhetha kusuka kumjikelezo obanzi wezimishini zokuhweba, izinguqulo zemishini yokubhola, kanye nezinhlelo zokuthi zifeze izimo ezikhethekile zephrojekthi, izithiyo zebhajethi, nezikhathi zokusebenza ngenkathi kuqinisekiswa ukuhambisana nezimiso zokwakha ezihambisana nemigomo ye-geotechnical engineering.
Amathuluzi we-plate kanye namarola acacile abe yizinsiza ezibalulekile ekuhlinzekeni ngemlimi nokuqalisa imisebenzi, ikakhulukazi emisebenzini yeziqeshana ezijulile nezokwakha ama-pile. Lezi zinsizakusebenza zokucindezela zenzelwe ukuhlanganisa izinto zomhlabathi ukuze kuhlomule izidingo zedensiyithi ezishiwo, ukuqinisekisa amandla okuphatha afanele kanye nokuzinza kwezici zokwakha ezilandelayo. Kungakhathaliseki ukuthi zisetshenziswa ekwelashweni komhlabathi ngaphambi kokufakwa kwepileyiko, ekusebenzeni kokugubha ngemva kokufaka, noma ekuhlomuleni kwezinhlaka, ama-compactors play indima ebalulekile ekufezeni izimo zokwakhiwa komhlabathi ezibekwe ochwepheshe bokwakha nezinhlelakaruni. Inqubo yokucindezela uqobo ibandakanya ukuhlanganiswa okwenziwa ngamakhenikha kwezicucu zomhlabathi, kunciphisa izikhala ezingenalutho futhi kwandise ukuqiniswa komhlabathi, okuqondile kuthinta ukusebenza kanye nezinsuku zokuphila kwezisekelo, izikhonkwane zomhlaba, kanye nezakhiwo ezicacisiwe nge-geosynthetic. Ama-plate compactors, aqhamuka kumayunithi alula okuhamba-ngeze, iye emathafeni aphakeme wokudansa, adlula kahle ezindaweni ezivulekile, emigudwini, nasezindaweni ezincane zokusebenza ezivamile emisebenzini yeziqeshana zasedolobheni nokufakwa kwezinsiza. Ama-roller compactors, akhona ngokuqinile kanye nezimo zokudansa, anikela ngokuqhubeleka okuphezulu kwezindawo ezinkulu zokusebenza kanye ne-compaction ye-emabank. Bobabili laba bahlukanisi beqinisekisa izinhlelo zokudansa ezivusa izicucu zomhlabathi kumasasa ajwayelekile phakathi kwezingu-25 nezingu-80 Hz, okwandisa kakhulu ukusebenza kahle kokuhlanganiswa komhlabathi uma kuqhathaniswa nokugubha okungapheli kuphela. Ukukhetha phakathi kwe-plate kanye ne-roller compactors kuncike ezintweni eziningi ezibandakanya izithiyo zesiza, ukuhlukaniswa komhlabathi, ubukhulu bokucindezela obudingekayo, kanye ne-thickness ye-lift ehleliwe. Imhlabathi ehlanganiswayo—ama-clay kanye nepulver—iyaphendula kahle ekuhlanganiseni okungapheli noma kwe-frequency ephansi, kuyilapho imhlabathi egranular—ama-sand kanye nezicucu—ithola inzuzo emkhakheni ophakeme we-vibratory. Ukuqukethwe kwamanzi emhlabathini kuthinta kakhulu impumelelo yokucindezela; okuqukethwe okungama optimala kukhombisa ukwenziwa okuphezulu kwi-density okuncane kakhulu, umgomo owenza kahle nge-Proctor testing evamile eyenza ukuba kwaziwe izinhlelo zokusebenza nezindlela zokusebenza ezisebenzelana nezindawo ezisebenzayo. Ukufakwa kweziqeshana ezijulile, kubandakanya ukujova ama-pile kanye nomsebenzi we-micropile, kuvame ukufuna ukucindezela okulawulwayo ezindaweni ezifakwe ukuze kucinywe izikhala, kuvinjeze ukushelela, futhi kubuyise ukuqiniswa komhlaba ezindaweni eziphukile. Ezinhlelweni zokuxhasa ngama-geosynthetic, ikakhulukazi uma kuhlanganiswa ama-geogrids noma ama-geotextiles ekuhlambeleleni, ukucindezela okufanele kuqinisekise ukuthi izixazululo zomkhiqizo zihlala ziseduze nomhlabathi ozungezile, kukhula ama-angles e-friction kanye namandla okuphatha adingekayo ukuze kube nezinsiza zokuphepha zokwakha. Ama-roller kanye nama-plate compactors afinyelela lezi zihloko ezibalulekile ngokugcwalisa ngokulandelana izinto ezisemzimbeni ezibekwe ngokulawulwa, ngokujwayelekile phakathi kwe-150 kuya ku-300 millimetri, phakathi kwezindawo zakwa-emabank, kufayela lokufika kumabhulogi, kanye nezakhiwo zomhlaba ezaziqinile. Amathuluzi wokucindezela anamuhla abandakanya izinhlelo ezihlanganisiwe zokudansa ezine-frequency modulation, evumela abasebenzi ukuthi bathuthukise ukusebenza kwezinsuku ezahlukene zomhlabathi ezitholakala ezimweni zezinto ezihlukahlukene ze-geo. Ukukhethwa kwemishini yemisebenzi ethile kulungisa izilinganiso zokukhiqiza ngokuya ngezikhala zokusebenza; ama-plate athanda umsebenzi wokulungisa kanye neziqulatho ezikhawulelwe kumagudwini ezisekelo, kuyilapho ama-roller athwala ngokuphakathi kokuhamba angasebenzisa imisebenzi emikhulu yokuhlola izimfuno nezilungiselelo zemhlaba. Izinhlaka zokulawula ngokuya ziya zidinga ubufakazi bokucindezela obubhalwe phansi ngezivivinyo ze-density—ama-gauges e-nuclear density, ama-sand cones, noma ama-dynamic cone penetrometers—okwakha ubufakazi bokuthi ukucindezela okukhona kuhambisana nezincazelo nezimfundiso zokwakha izisekelo.
Imishini Yokufaka Izinto Zokugcwalisa ihlanganisa imishini ethile nezinhlelo ezisetshenziswa ukulungisa, ukusabalalisa, nokucindezela izinto zokugcwalisa ezikhethiwe ngesikhathi sokwakhiwa kweziqalo ezijulile nezinhlelo zokuthuthukiswa komhlaba. Le nqubo ebalulekile yokwakha iziqalo ibandakanya ukufaka ngokunembile umhlabathi, i-aggregate, nezinto zokuphakamisa ezikhethiwe ezindaweni ezilawulwayo ukuze kufezwe amandla okuphatheka adingekayo, ukusebenza kakuhle kokuhlala, nokwakheka okuqinisekisiwe. Emsebenzini wokwakhiwa kwezinqaba ezijulile, imishini yokufaka izinto zokugcwalisa isekela ukulungiswa kwezindawo zeziqalo, ukwakhiwa kwezindonga ezinamandla, nokuvumelanisa nezimo zomhlaba ezithe xaxa emhlabeni ophakanyiswe, ezindaweni ze-diaphragm, nakwezinye izingxenye zokwakha. Inqubo ejwayelekile yokufaka izinto zokugcwalisa idinga ukusebenza okuhlangene kwemishini yokucindezela, imishini yokuphathwa kwezinto, nezinsiza zokulawula izinga. Ama-vibratory compactors, kuhlanganise nama-vibrators wephakethe nama-vibratory rollers, ayisisekelo sokufinyelela ubukhulu obukhulu nezidingo zokuphakanyiswa kwenkundla ngamunye wezinto ezibekwayo. Ama-excavators anezimbobo ezikhethekile noma izithako zokwabelana asabalalisa izinto zokugcwalisa endaweni yokwakha, kanti imishini yokucindezela encane iphethe izindawo ezivulekile ezilinganiselwe ezikhalweni zeziqalo ezingamathanga nasezindaweni eziwugwava. Ukuze kuphumelele emajini ahlanganisa ukuqiniswa kwe-geosynthetic, imisebenzi yokufaka izinto zokugcwalisa ihlanganisa ama-geotextiles, ama-geogrids, noma ama-geocells nezinto zokugcwalisa ezisemthethweni noma ezingenisiwe, okudingeka ukuba abalawuli babe nolwazi lokugcina ukuhambisana okufanele nokuvikela ukonakaliswa kwezingqimba zokuphakamisa ngesikhathi sokufaka nokucindezela. Izimo zomhlaba zithinta kakhulu ukukhethwa kwezinto zokugcwalisa nokusebenza kokufaka. Emhlabathini ohlangene no-silty clay, okuqukethwe kwamanzi okuhlanganisiwe kanye nokucindezela okuhlelekile kuvimbela izinkinga zokuhlala nokuqinisekisa ukuphendula kwamanzi okufanayo. Izinto zokugcwalisa eziqukethwe kumathanga amsandlayo noma zgwadi zithola izinzuzo zokucindezela okunyakazayo kanye nezindlela zokwazisa ukuze zinqande izikhala futhi zifinyelele ubukhulu obukhulu bokuqina. Kumaphrojekthi okuthuthukiswa komhlaba owabuyiselwa kanye nezinhlelo zokulungiswa, izinto zokugcwalisa ezingenisiwe noma izinto ezibuyisiwe zingadingeka, ziphakamisa izinqubo ezikhethekile zokuhlola nokufaka. Amaprojekthi okuqina ejulile ezindaweni zolwandle noma ezinamakhaza avama ukusebenzisa izinto zokugcwalisa eziningi kanye nezindlela zokuhlanganisa ezihlelwayo ukuze kubhekwane nengcindezi eyengeziwe ye-pore nokufeza ukuphendula okudingekayo ngaphakathi kwezikhathi ezamukelekayo. Ukuqapha kanye nezinga lokuqinisekisa ngesikhathi sokufaka izinto zokugcwalisa kuthinta ukukhethwa kwemishini nokusebenza kwemisebenzi. Ukuhlolwa kokubumbana, ukuhlola umswakama, kanye nokubona ukwelapha kudinga ukusebenza okuhlela phakathi kwemikhiqizo yokufaka nezinsiza zokuhlola ze-geotechnical. Imisebenzi yokufaka izinto zokugcwalisa yanamuhla ihlanganisa kakhulu ukuqapha kokucindezela ngesikhathi sangempela kanye nokulandela imiphumela yokuhlola eqinisekisiwe ukuze ihlangabezane nezidingo zemithetho, izindinganiso zokuhambisana nesimo sezindaba, kanye nezincazelo zobunjiniyela ezithile. Ukukhethwa kwemishini kuqhathaniswa nezidingo zokukhiqiza nezinhloso ezidingekayo ukuze kugcinwe ubukhulu bezinhlaka, ukuphakama kwendawo, kanye nokubekwa kwezinto zokuphakamisa phakathi nesikhathi sohlelo, ukuqinisekisa ukuzinza kweziqalo kanye nokusebenza kwesikhathi eside kwezakhiwo eziphalaziwe noma eziqinisekiswe ngembobo.
Get the latest equipment listings, industry news, and market insights.