Izinhlelo zokupompa ze-micropiling zibalulekile emhlabeni wokwakhiwa kwezisekelo ezijulile zanamuhla, zakhelwe ukuhambisa i-grout ephehliweyo, i-cement slurry, kanye nephuzu lokubhola ezikhukhulweni ze-micropile ngokuqinisekile nangokuhambelana. Lezi zimpompi ezikhethekile zisekela ukufakwa kwe-micropiles, okuyizikhala ezincane, ezinamandla aphezulu ezibholisiwe ngokuvamile ezilinganiselwa phakathi kuka-75 kuya ku-300 amagazini ububanzi. I-micropiles ibonisa isixazululo esibalulekile sokuthuthukiswa kwezisekelo, ukugcinwa, kanye nokwakhiwa okusha ezindaweni ezinathezekile lapho izindlela ezijwayelekile zokubhola zingafaneleki. Inqubo yokupompa iletha i-grout ngaphansi kwengcindezi elawulwayo ukuze igcwalise imikhono ye-micropile, enze ubudlelwano nomhlabathi noma ithafa, futhi ithuthukise amandla okwakhiwa adingekayo ukuze ixhase imithwalo yokwakha. Le ndlela ye-micropiling iye yaba yinsiza ebalulekile kumaphrojekthi wokuhlaziywa kwebhizinisi, lapho izakhiwo ezikhona zidinga ukuqina kokuqina kwezisekelo, kanye nasezindaweni ezinezimo ezintsha ezinzima lapho imikhawulo yokufinyelela nezikhala ezincane zidinga izixazululo eziphumelelayo zokwakha. Ukusebenza kwe-pump ye-micropiling kukhombisa ukuphathwa kwemfucuza ehlanganisiwe nokulawula ukuhamba ukuze kuqinisekiswe indawo efanele ye-grout kanye nokuqina kwayo kuyo yonke i-dip ye-micropile. Ngokwesimo sendawo nezincazelo zokwakha, onjiniyela bakhetha phakathi kwezinhlelo ze-grout kuphela, lapho i-paste ye-cement iphonswa kuma-auger anemikhono emhlope ngemva kokubhola, kanye nezindlela zokubhola ezizihlanganisayo ezihlanganisa ukuhamba nokupompa ngasikhathi sinye ukuze kuthuthukiswe ukuzinza kwezindonga. Ama-pump okukhiphayo angashintsha, ama-pump emithwalo ehlosiwe, kanye nama-pump e-piston ajwayelekile, ngayinye inezinzuzo ezahlukahlukene kumandla ezinhlelo, izinga lokuhamba, kanye nokuhambisana nezixazululo ezihlukahlukene ze-grout. I-minunguza ye-grout esetshenziswa ku-micropiling — ehlola kusuka ku-cement elungile kuya kwiwodka ye-sand-cement kanye nezixazululo ezikhethekile ze-microsurry — zidinga ama-pump akwazi ukuphatha ukuncibilika okuhlukahlukene ngenkathi kuqinisekisa ukuhamba okuhambisanayo. Ukukhethwa kokupompa okufanele kuncike kubukhulu be-borehole, izidingo zengcindezi ye-grout (ngokuvamile phakathi kuka-20 kuya ku-40 megapascals), ivolumu yokukhiqiza yansuku zonke, kanye nezindawo ezithile ze-geology ezitholakala ngesikhathi sokwakha. I-micropiles ibonisa ukubaluleka okukhethekile ezimweni zomhlabathi eziphukile, ezithambile, kanye nasezikhakheni ezimibalabala lapho amandla okuthwala alinganiselwe, kubandakanya izendlalelo zekhasi, izindlalelo ze-silt, kanye nezimo zezitanga ezilapha lapho ziqukethe izindawo ze-geology ezinzima. Izicelo zihlanganisa ukuqina kwezisekelo zezakhiwo zesiqhingi, ukuvuselelwa okuphathelene ne-seismic emadolobheni anomsakazo, ukuphuculwa kwephuzu kwezindawo ezithambile, kanye nokuxhaswa kwemisebenzi yesikhashana neyesikhathi eside ezindaweni zamanzakanye nezisemanzini. Ukuhlakanipha kwe-micropiling kuvumela onjiniyela ukuba bafeze izinkulu ze-axis ne-lateral load capacities ngama-array anamandla kakhulu ezikhala ezincane ezisebenza ngokubambisana, ngenkathi kuncishiswa ukuxhngwa, umsindo, nokuphulwa komhlaba uma kuqhathaniswa nezindlela ezijwayelekile zokubhola. Izidingo zephrojekthi zikhokhela izinqumo zokukhetha usayizi wepiphikha, nezimo zokuhamba komshini, indawo yokusebenza endaweni, ukutholakala kokukhanya okuyisiqinisekiso se-hydraulic, kanye nokuhlanganyela nezisebenzi zokubhola kanye nemisebenzi yokupompa ebukhali. Amaphrojekthi e-micropiling wanamuhla afuna izinhlelo zokupompa ezithembekile, eziqhubekayo ezigcinela ukusebenza kwe-performance ngaphansi kwezimo ezinzima, kusuka ezindaweni ezinzima zezindonga ukuya ekukhanyeni kwezimo ezinzima, kuqinisekisa ukuthi izisekelo ezijulile ziletha ubuqotho bezakhiwo noshintsho oluyisisekelo lokwakha okuphepha nokugcinwa kwesakhiwo.
Iziphumo zokuhlanza zibalulekile ezisebenzini zokusebenza kwemicropiling, zisebenza njengemishini ethile yokuhambisa amanzi okumba nemixube ye-bentonite phakathi kwezinsiza zokumba ze-micropile. Le mishini ekhethekile igcina ukuzinza nokuhlanzeka kwemikhondo ngesikhathi sokufakwa kwemigqa encane, enamandla aphezulu ezindaweni ezixegayo nezimo zehlabathi ezinzima. Uhlelo lokuhlanza lusebenza ngokuhambisa umsebenzisi wokumba ngaphansi kwengcindezi elawulwayo ukuze uthumele endaweni yokumba, ususa kahle utshani nezinsika zehlabathi emikhondweni ngesikhathi esifanayo sakha isihlungi sokuvikela phezulu kwemikhondo. Le misebenzi eqhubekayo ye-sluur iyadingeka ukuze ivimbele ukuwa kwemikhondo, kulawulwe ukugeleza kwamanzi emhlabeni, nokuqinisekisa ukufakwa kahle kwezindawo ze-micropile nezinsika ze-grout. Izimpompo zokuhlanza zisebenza ngokususela kumgomo we-piston ewukuphehla, zifika nezinga eliqinile lokuhamba kwemithwalo elungele ububanzi bemikhondo obuphakathi nendawo obujwayelekile bezinhlelo zokusebenza ze-micropiling, ezivamise ukuba phakathi kuka-150mm kuya ku-300mm. Lezi ziphumo zisebenza ngezinhlobonhlobo ze-fluid zokumba ezifaka phakathi imifula esekelwe emanzini, ukuhlanganiswa komoya, nemixube ye-bentonite ethuthukisiwe nge-polymer, ngayinye yenziwe ngezimo ezithile zehlabathi nezimo ze-hydrogeological. Imigomo yokusebenza ivamise ukuba phakathi kuka-20 kuya ku-50 bar kuye ngokujula kwemikhondo, izici zokuphikisa zehlabathi, kanye nomklamo wezinsika. Ukuthembeka nezinga eliqinile lokukhishwa kweziphumo zokuhlanza kwenza kube kuhle ezindaweni zokwakha zasedolobheni, ezinhlelweni zokwengamela, ukugcinwa kwezemvelo, kanye nezimo zehlabathi ezinzima ezitholakala ekuthuthukisweni kwedolobha lapho izindlela zokufaka izinsika ezinkulu zendabuko zingasebenzi. Izicelo zeziphumo zokuhlanza zixhumene nezimo ezihlukahlukene ze-geotechnical kufaka phakathi i-micropiling ezindaweni ezithambile ze-clay, i-sandy silts, i-rock ethambile, kanye nezakhiwo eziphukile kakhulu. Lezi ziphumo ziveza ukubaluleka ekuwakheni izinsika ezikufuphi, lapho izakhiwo eziseduze nezinsiza zidinga ukungeneleka okuncane komhlaba kanye nolawulo oluqondile lokufakwa. Ukuvuselelwa kwamabhuloho, ukwakhiwa kwezakhiwo zomlando, ukuzinza kwemithambeka, nokuqiniswa kwesisekelo somhlaba osedolobheni kudinga kakhulu izinhlelo ze-micropiling ezineziphumo zokuhlanza ezithembekile. Ukuhlanganiswa kwezinhlelo zeziphumo zokuhlanza nezinsiza zokumba ze-rotary micropiling kuvumela abathengi ukuthi basebenze kahle ezindaweni ezihlakazekile ezinamathuba aphansi kanye nemigudu yendawo enzima. Ukukhethwa kahle kwesikhumba sokuphuma, izinga lokucindezela, kanye nekhono lokuphatha i-sluur kuhlobana ngqo nokusebenza kahle kokumba, ikhwalithi yemikhondo, kanye nokusebenza kahle kokugcina kwe-micropile kumakethe ye-B2B yokwakha izisekelo lapho ukuthembeka kwemishini kuhunyushwa ngokuhambisana nohlelo lweprojekthi kanye nokulawula izindleko.
Ama-screw flushing pumps umele imishini ebalulekile yokuxhasa emisebenzini yokufaka ama-micropile, engumsebenzi obalulekile wokuqinisekisa ukuphathwa kwemishini efakwe emathunjini nokugcina ubuqotho bezikhukhula phakathi nenqubo yokufaka ama-micropile. Le miphumela yokuphefumula ikhuluma ngendlela efanayo nezinhlelo ze-continuous flight auger (CFA) ukuze ikhiphe izithako zomhlabathi nezinto zokubhola kolwazi phakathi kokuphahlazeka kwengcindezi ye-micropile. Ezinhlelweni zokwakha ezijulile, ama-screw flushing pumps avumela abaphakeli ukuba bagcine izikhukhula zicacile, vlagela ukuphuka kwecala, futhi baqinisekise izimo ezinhle zokugcwalisa ama-micropile nezomthwalo. Ukuqina nokwethembeka kwezinhlelo zama-screw flushing pumps kuthinta ngqo izinsuku zokwakha, ukukhiqiza ukuvuna, kanye nokwakha ubuqotho bama-micropile afakiwe ezimeni ze-geotechnical ezinzima. Indlela yokusebenza ye-screw flushing pumps ibandakanya ukuqhubeka kokukhipha okukhishiwe ngezindlela ezihambisana nezinga lokunciphisa okuphakathi kwezinto, okusebenza kahle kakhulu ezimweni ezishintshashintshayo phakathi nemigqa ethulile eyaziwayo, amaqhwa, izisebenzi ezinhle, nemingcele yokuhlanza. Uhlelo lokuphefumula kufanele luphathise izinkinga zokuhlekisana ukuphakela ukuqukethwe i-moisture, amakhumbi e-clay, nezinspande ngenkathi ugcina izinga lokuphumelelisa eliyingqayizivele elihambisana nezinga lokwenza ama-auger. Izicelo zihlukaniswa phakathi kwemisebenzi yokufaka isisekelo sama-micropile yokuvuselela i-seismic, ukuqinisa izakhiwo ezikhona, kanye nokuzinza komhlaba ophakanyisiwe ezokuvakasha ze-basin, ukuqinisa isisekelo semibhoshongo, nezinhlelo zokusatshalaliswa kwezinto ezinzima endaweni ezingatholakali kalula. Ukujula kwe-screw flushing pumps kubenza babe yimishini engabalulekile kubabhakeli abahlinzekayo emisebenzini yokwakha ezinzima emikhakheni yokuvakasha lapho izindlela ezijwayelekile zokufaka ama-piling noma izindlela zokumba ezivulekile zibhalwa zingasebenzi ngokuhamba kwendawo, ukuhluleka kwezimvo, noma izinhlekelele zemvelo. Izincazelo zobuchwepheshe kanye nokukhetha imishini ye-screw flushing pump systems kudinga ukubhekelela ukujula kwezindonga ezilindelekile, ububanzi bezikhukhula, izinga le-spoil elilindelekile, kanye nokuhlukaniswa komhlabathi ezindaweni zomsebenzi. Abasebenzi kumele baqinisekise amandla okuhamba kwamasondo amageja, amandla emotor, izindlela zokuphatha izinto, kanye nomzila wokukhupha ukuze bakhulise ukukhiqizwa kokubhlala ngezindawo nokunciphisa isikhathi sokuphumula phakathi kwemikhankaso yokufaka ama-micropile. Ukuhlanganiswa kwe-screw flushing pumps ne-CFA drilling rigs, amayunithi okuhlinzeka, kanye nezinhlelo zokuhlola ubuqotho bezikhukhula kudala izixazululo eziphelele zokwakha izisekelo ezijulile emiphakathini yasezindaweni, izikhungo zezimboni, kanye nezindawo ezinzima ze-geology. Ukmaintenance okwakhe, kuhlanganisa ukuhlolwa njalo kwezithako zangaphakathi, ukuqinisekisa ubuqotho bezikhukhula, kanye nezinsiza ezivikelayo, kudlula impilo yemishini futhi kuqinisekisa ukusebenza okuhambile phakathi nezinsuku ezandayo zokufaka ama-micropile kudinga ukuba ama-piles amaningi noma amakhulu abekwe.
Imiphumela ye-foam iyithuluzi elikhethekile elibambene nezinsizakusebenza zesimanje ezisebenza kumicro-piling nasemizileni ejulile, futhi ibamba iqhaza elibalulekile ezinqubweni zokubhoboza ezilawulwayo nasekuphumleni. Lezi zimiphumela zenza i-foam ye-pneumatic ngokuhlungisa ukujula kwamanzi okuphuma noma izinsiza zokuphula ngesigqi somoya, zenza umkhiqizo ozinzile, ongenamahloni ophakamisa ukusebenza kokubhoboza nokuthuthukisa ukumelana nezimo ezinzima zomhlaba. Emisebenzini ye-micropiling, imiphumela ye-foam isiza ukukhiqiza ama-foam drilling fluids asetshenziswa ku-hollow-stem auger drilling, open-hole drilling, nasezindaweni zokubhoboza ezivaliwe lapho izinhlelo zemud ezijwayelekile zingasebenzi kahle noma zingafaneleki. I-foam isiza ukwenza kube lula izindonga zomgodi, iyanciphisa ingcindezi ye-hydrostatic ezindaweni ezingazinzile, futhi inciphisa ukufinyelela kwamanzi, okwenza ubuchwepheshe bokuphuma be-foam bube namandla kakhulu emsandleni aphukile, izinsila, ama-clays, kanye nezendlalelo zomhlaba ezigcwele amanzi ezivame ukuvela emsebenzini wokwakha izisekelo ezijulile. Inzuzo eyinhloko yokusebenza kokuphuma kwe-foam ikuma-akhawunti yokusekela ukubhoboza emhlabeni ongalawuleki noma ongezinhle ngenkathi kunciphisa udoti nomthelela kwezempilo uma kuqhathaniswa nemifantu yokubhoboza ejwayelekile. Izinhlelo zokubhoboza ze-foam zenza izinsiza zokubhoboza ezilawulwayo, ezimaphakathi ezishintsha isimo somhlaba, ukusuka kumhlaba ophakeme ukuya kumagquma ahlulekile kanye ne-bedrock. Abasebenzisi bezinsiza bangaphatha ikhwalithi ye-foam kanye nosayizi baphinde balandele izilinganiso zokufaka umoya, izinga lesurfactant, kanye ne-viscosity ye-fluid, beqhuba ukusebenza okuhle kakhulu ngezimo ze-geological ezithile nasemazingeni okungenelela. Imiphumela ye-foam ivame ukuphathwa ngama-motors e-diesel noma we-electric, ibonise izinhlelo zokuphuma ezihambayo noma izinqubo ze-gear pump, futhi ihlanganiswe nezinhlelo ze-compressor zomswakama noma izindawo zokuxhuma zamaswakiwe zodwa. Lezi zinsiza zikwazi ukuphatha izinhlobo ezehlukene ze-fluid—ama-bentonitic muds, amanzi apheshe, noma izinsiza ezikhethekile zokuphula—okwenza kube izinsiza ezisemqoka kumayeter selective aqondisa izisekelo ezahlukene nemigudu yomhlaba emkhakheni ophoqelekile. Ukulawula okuqondile okwethulwa ubuchwepheshe bokuphuma kwe-foam kuvumela abasebenzisi ukuba bafeze ikhwalithi yokubhoboza ye-foam ephindaphindayo ezinhlakeni ezinde zomgodi, kunciphisa ukulahlekelwa kokujikeleza nezinkinga zokungazinzile zomgodi ezivame ukuqubuka kumaphrojekthi endaweni ezimfushane noma ezinzima. Ukuphuma kwe-foam kusekela ngokuqondile izindlela zokugcwalisa ezilula kanye nezindlela zokuthuthukisa umhlaba ezibalulekile emisebenzini yokwakha izindawo zedolobha nezinhlelo zokukua nokubuyisela. Lapho kuhlanganiswe nezinhlelo zokuphula, imiphumela ye-foam ivumela ukukhiqizwa kwe-concrete ye-cellular noma impahla yokusebenza ezinesikhumo esilawulwayo (CLSM), etholakala njenge-backfill elula, ukuphusha izikhala, kanye nezinto zokuxhasa umhlaba ezithile noma ezihlala zikhona. Emsebenzini wokwakha ama-micropile nasezinhlelweni zokwakhiwa, ukwakhiwa okusekelwe ku-foam kuthuthukisa uxhumano phakathi kwezingxenye ze-micropile nomhlaba onjengokuhlunga, ukuqinisekisa ukulandelela komthwalo okungaguquguquki kanye nesikhathi sokuphila eside somsebenzi owakhiwe. Ngaphezu kwalokho, ubuchwepheshe bokuphuma kwe-foam buhlinzeka ngezinsiza eziphakeme zokukhonza ngesikhathi sokubhoboza, kuthuthukisa ukuphepha kwendawo kanye nokuhambisana nemithetho yezehlakalo, ikakhulukazi ezindaweni ezicacile noma ezinhle kakhulu lapho izinqubo zokuhlola umoya zifaka imikhawulo emithini ejwayelekile yokubhoboza. Izinzuzo zokusebenza ze-foam drilling—imirhumo yephuca, ukunciphisa izinkinga zokuhamba kancane, kanye nokunciphisa izidingo zokubuyisela umgodi—zishintsha zibe izinzuzo ezilinganiselwe nokuphumelela kokuhlola imisebenzi emikhakheni yezenzakalo ezijulile lapho ukuqedwa okubalulekile kukhulu.
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