Amarobhothi amabili e-Hydrodemolition aqede ukukhipha ukhonkolo ezinsikeni zenkundla ezinsukwini ezingu-30, kuyilapho indlela evamile ilinganiselwa ukuthi ithatha izinyanga ezingu-8.
Zibone ngeso lengqondo ushayela enkabeni yedolobha ungakunaki ukunwetshwa kwebhilidi eliseduze ngezigidi zamarandi—akukho zimoto eziqondiswe kabusha futhi akukho nokubhidlizwa kwezakhiwo ezizungezile.Lesi simo cishe asizwakali emadolobheni amakhulu e-United States ngoba ahlala eguquguquka futhi eshintsha, ikakhulukazi kumaphrojekthi angalolu hlobo.Kodwa-ke, lolu shintsho olucashile, oluthule luyilokho kanye okwenzeka edolobheni laseSeattle, ngoba abathuthukisi basebenzise indlela ehlukile yokwakha: ukunwetshwa okuya phansi.
Esinye sezakhiwo ezidume kakhulu e-Seattle, i-Climate Commitment Arena, ilungiswa kakhulu futhi indawo yaphansi izoba ngaphezu kokuphindwe kabili.Indawo ekuqaleni yayibizwa ngokuthi i-Key Arena futhi izolungiswa ngokuphelele futhi ivulwe kabusha ekupheleni kuka-2021. Le phrojekthi yokufisa iqale ngokusemthethweni ekwindla ka-2019 futhi kusukela ngaleso sikhathi ibe yisiteji sezinye izindlela eziyingqayizivele zobunjiniyela nokubhidliza.Usonkontileka i-Redi Services udlale indima ebalulekile ohlelweni loguquko ngokuletha le mishini emisha esizeni.
Ukunweba isakhiwo siye phansi kugwema isiphithiphithi esibangelwa ukunwetshwa okuvundlile okungokwesiko—ukuklama kabusha isakhiwo sedolobha nokubhidliza izakhiwo ezizungezile.Kodwa le ndlela eyingqayizivele empeleni ayiveli kulokhu kukhathazeka.Kunalokho, ugqozi luvela esifisweni kanye nomsebenzi wokuvikela uphahla lwesakhiwo.
Idizayinelwe umdwebi u-Paul Thiry ngo-1962 World Exposition, uphahla olubonakala kalula olutshekile luthole isimo sendawo yomlando ngoba ekuqaleni lwalusetshenziselwa imicimbi yomlando nezamasiko.Isakhiwo esiyingqopha-mlando sidinga ukuthi noma yiziphi izinguquko esakhiweni zigcine izici zesakhiwo somlando.
Njengoba inqubo yokuvuselela yenziwa ngaphansi kwesibonakhulu, zonke izici zenqubo ziye zahlelwa futhi zahlolwa okwengeziwe.Ukunwebeka phansi-ukukhulisa indawo ukusuka ku-368,000 wamafidi-skwele kuya cishe ku-800,000 wamafidi-skwele-kuletha izinselele ezihlukahlukene zezokuthutha.Iqembu lembe amanye amafidi angu-15 ngaphansi kwenkundla yamanje kanye namafidi angaba ngu-60 ngaphansi komgwaqo.Ngenkathi kufeza lokhu, kusekhona inkinga encane: indlela yokusekela amakhilogremu ayizigidi ezingu-44 ophahleni.
Onjiniyela nosonkontileka okuhlanganisa i-MA Mortenson Co. kanye nosonkontileka omncane i-Rhine Demolition bakha uhlelo oluyinkimbinkimbi.Bazosusa amakholomu akhona kanye nezinqe ngenkathi befaka isistimu yokusekela ukuze basekele izigidi zamaphawundi ophahleni, bese bethembela ekusekelweni izinyanga ukuze bafake uhlelo olusha lokusekela.Lokhu kungase kubonakale kunzima, kodwa ngokusebenzisa indlela yamabomu kanye nokubulawa kwesinyathelo ngesinyathelo, bakwenzile.
Umphathi wephrojekthi ukhethe ukufaka isistimu yokweseka yesikhashana ukuze isekele uphahla lwenkundla oluyingqopha-mlando, olubiza izigidi zamapondo, kuyilapho kususwa izinsika nezinqe ezikhona.Bathembele kulezi zisekelo izinyanga ukuze bafake amasistimu osekelo angunaphakade.I-Aquajet iqala ngokumba phansi futhi isuse cishe ama-cubic metres angama-600,000.ikhodi.Umhlabathi, abasebenzi bamba isisekelo esisha sokusekela.Lolu hlelo olunezinsika ezingu-56 lwakha i-superstructure esetshenziselwa ukusekela okwesikhashana uphahla ukuze umakhi akwazi ukumba kuze kufike ezingeni elidingekayo.Isinyathelo esilandelayo sihlanganisa ukubhidliza isisekelo sikakhonkolo sokuqala.
Kuphrojekthi yokubhidliza yalo sayizi nokucushwa, indlela yesando yeshizolo ibonakala ingenangqondo.Kuthathe izinsuku ezimbalwa ukubhidliza ikholomu ngayinye mathupha, futhi kwathatha izinyanga ezingu-8 ukubhidliza wonke amakholomu angu-28, amakholomu angu-4 amise okwe-V kanye nesinqe esisodwa.
Ngaphezu kokubhidlizwa kwendabuko okuthatha isikhathi esiningi, le ndlela inokunye okungalungile okungenzeka.Ukudiliza isakhiwo kudinga ukunemba okuphezulu kakhulu.Njengoba isisekelo sesakhiwo sokuqala sizosetshenziswa njengesisekelo sezinsika ezintsha, onjiniyela badinga inani elithile lezinto zokwakha (okuhlanganisa insimbi nokhonkolo) ukuze bahlale beqinile.I-crusher kakhonkolo ingalimaza izigxobo zensimbi futhi ibe sengozini yokuqhekeka okuncane kwekholomu kakhonkolo.
Ukunemba kanye nokucaciswa kwezinga eliphezulu okudingekayo kulokhu kulungiswa akuhambelani nezindlela ezivamile zokubhidliza.Nokho, kukhona inketho ehlukile, ebandakanya inqubo abantu abaningi abangayijwayele.
Inkampani engaphansi kwe-Rheinland Demolition Company isebenzise ukuxhumana nochwepheshe we-spray yamanzi wase-Houston u-Jetstream ukuze bathole isisombululo esinembile, esisebenzayo nesisebenzayo sokubhidliza.AbakwaJetstream bancome iRedi Services, inkampani esekela izinkonzo zezimboni eseLyman, Wyoming.
Yasungulwa ngo-2005, iRedi Services inabasebenzi namahhovisi nezitolo ezingama-500 eColorado, Nevada, Utah, Idaho naseTexas.Imikhiqizo yesevisi ihlanganisa izinsiza zokulawula nokuzenzakalela, ukucisha umlilo, ukumba ama-hydraulic kanye nezinsiza zokuvala uketshezi, ukuqhuma kwamanzi, ukusekelwa nokuxhumanisa ukushintshwa kwesikhungo, ukuphathwa kwemfucuza, ukuthuthwa kwamaloli, izinsiza zamavalvu okuphepha kwengcindezi, njll. Iphinde ihlinzekele ngezinsizakalo zokwakha imishini nezomphakathi ukuze kuthuthukiswe. amakhono esevisi yokulungisa okuqhubekayo.
I-Redi Services yafakazela lo msebenzi futhi yethula irobhothi le-Aquajet Hydrodemolition endaweni yeClimate Commitment Arena.Ukuze uthole ukunemba nokusebenza kahle, usonkontileka usebenzise amarobhothi amabili e-Aqua Cutter 710V.Ngosizo lwekhanda lamandla okuma kwe-3D, opharetha angakwazi ukufinyelela ezindaweni ezivundlile, eziqondile nezingaphezulu.
"Kungokokuqala ukuthi sisebenze ngaphansi kwesakhiwo esinzima kangaka," kusho uCody Austin, umphathi wesifunda weRedi Services."Ngenxa yephrojekthi yethu yerobhothi ye-Aquajet edlule, sikholwa ukuthi ifaneleka kakhulu kulokhu kubhidlizwa."
Ukuze inembe futhi isebenze kahle, usonkontileka wasebenzisa amarobhothi amabili e-Aquajet Aqua Cutter 710V ukuze abhidlize izinsika ezingaba ngu-28, ama-V-shape amane kanye ne-buttress eyodwa zingakapheli izinsuku ezingu-30.Kuyinselele kodwa akunakwenzeka.Ngaphezu kwesakhiwo esesabisayo esilenga phezulu, inselele enkulu bonke osonkontileka esizeni ababhekene nayo yisikhathi.
"Uhlelo lwezikhathi luqinile kakhulu," kusho u-Austin.“Lona wumsebenzi oshesha kakhulu futhi sidinga ukungena lapho, sibhidlize ukhonkolo, sidedele abanye abasemva kwethu baqedele umsebenzi wabo ukuze benze umsebenzi wokulungisa njengoba bekuhleliwe.”
Ngenxa yokuthi wonke umuntu usebenza emkhakheni ofanayo futhi uzama ukuqedela ingxenye yephrojekthi yakhe, ukuhlela ngenkuthalo nokuhlelwa ngokucophelela kuyadingeka ukuze kugcinwe yonke into isebenza kahle futhi kugwenywe izingozi.Usonkontileka owaziwayo i-MA Mortenson Co. usekulungele ukubhekana nenselelo.
Ngesikhathi sephrojekthi lapho i-Redi Services ibambe iqhaza khona, osonkontileka ababalelwa ku-175 kanye nosonkontileka abancane babekhona esizeni ngesikhathi esisodwa.Ngenxa yokuthi kunenani elikhulu lamaqembu asebenzayo, kubalulekile ukuthi ukuhlelwa kwempahla nakho kucabangele ukuphepha kwabo bonke abasebenzi abafanelekile.Usonkontileka umake indawo evinjelwe ngama-red tape namafulege ukuze abantu abasesizeni bahlale kude nejethi lamanzi elinomfutho omkhulu kanye nemfucumfucu evela ohlelweni lokususa ukhonkolo.
Irobhothi le-Hydrodemolition lisebenzisa amanzi esikhundleni sesihlabathi noma ama-jackhammer endabuko ukuze linikeze indlela esheshayo nenembe kakhudlwana yokususa ukhonkolo.Uhlelo lokulawula luvumela opharetha ukuthi alawule ukujula nokunemba kokusikwa, okubalulekile emsebenzini oqondile njengalokhu.Idizayini eyingqayizivele nemibese ye-Aqua engadlidlizi ivumela usonkontileka ukuthi ahlanze kahle izinsimbi zensimbi ngaphandle kokubangela imifantu emincane.
Ngaphezu kwerobhothi ngokwalo, i-Redi Services iphinde yasebenzisa ingxenye yombhoshongo eyengeziwe ukuze ifake ukuphakama kwekholomu.Iphinde isebenzisa amaphampu amanzi amabili e-Hydroblast high-pressure ukuze inikeze ukucindezela kwamanzi okungu-20,000 psi ngesivinini esingu-45 gpm.Iphampu itholakala ngamamitha angama-50 ukusuka emsebenzini, izinyawo eziyi-100.Zixhume ngamapayipi.
Sekukonke, iRedi Services idilize isakhiwo esingama-cubic metres angama-250.ikhodi.Impahla, ngenkathi igcina imigoqo yensimbi iqinile.1 1/2 amayintshi.Amabha ensimbi afakwe emigqeni eminingi, enezela izithiyo ezengeziwe ekususeni.
"Ngenxa yezingqimba eziningi ze-rebar, kudingeke ukuthi sisike kuzo zonke izinhlangothi ezine zekholomu ngayinye," kusho u-Austin.“Kungakho irobhothi le-Aquajet kuyisinqumo esifanele.Irobhothi lingakwazi ukusika libe ngamafidi angu-2 ukujiya ngokudlula ngakunye, okusho ukuthi singaqeda amayadi angu-2 kuya kwangu-3 1/2.Ngehora, kuya ngokubekwa kwe-rebar.”
Izindlela ezijwayelekile zokudiliza zizokhiqiza imfucumfucu edinga ukuphathwa.NgeHydrodemolition, umsebenzi wokuhlanza uhilela ukuhlanzwa kwamanzi kanye nokuhlanzwa okuncane kwezinto ezibonakalayo.Amanzi aqhumayo adinga ukugezwa ngaphambi kokuthi akhishwe noma ajikelezwe kabusha ngepompo enengcindezi ephezulu.I-Redi Services ikhethe ukwethula amaloli amabili amakhulu e-vacuum anezinhlelo zokuhlunga ukuze aqukathe futhi ahlunge amanzi.Amanzi ahlungiwe akhishelwa ngokuphephile epayipini lamanzi emvula phezulu endaweni yokwakha.
Isitsha esidala sashintshwa saba isihlangu esinezinhlangothi ezintathu esadilizwa ukuze kugcinwe amanzi aqhumayo futhi kuthuthukiswe ukuphepha kwendawo yokwakha ematasa.Isistimu yabo yokuhlunga isebenzisa uchungechunge lwamathangi amanzi kanye nokuqapha kwe-pH.
"Sithuthukise isistimu yethu yokuhlunga ngoba sikwenze kwamanye amasayithi ngaphambilini futhi siyayazi inqubo," u-Austin ubonisa.“Ngesikhathi womabili amarobhothi esebenza, salungisa amalitha angama-40,000.Ukushintsha kwamanzi ngakunye.Sineqembu lesithathu elizoqapha izici zemvelo zamanzi angcolile, okubandakanya ukuhlola i-pH ukuqinisekisa ukulahlwa okuphephile. "
I-Redi Services ihlangabezane nezithiyo nezinkinga ezimbalwa kuphrojekthi.Iqasha iqembu labantu abayisishiyagalombili nsuku zonke, no-opharetha oyedwa werobhothi ngalinye, opharetha oyedwa wephampu ngayinye, oyedwa ngeloli ngalinye le-vacuum, kanye nomqondisi kanye nochwepheshe ukuze basekele “amaqembu” amarobhothi amabili.
Ukususwa kwekholomu ngayinye kuthatha cishe izinsuku ezintathu.Izisebenzi zafaka izinto zokusebenza, zachitha amahora angu-16 kuya kwangu-20 zidiliza isakhiwo ngasinye, zase zidlulisela leyo mishini ohlwini olulandelayo.
“I-Rhine Demolition ihlinzeke ngesitsha esidala esaphinde sasetshenziswa futhi sasikwa saba amahawu anezinhlangothi ezintathu ahlakazwa,” kusho u-Austin.“Sebenzisa i-excavator ngesithupha sakho ukuze ususe ikhava eyisivikelo, bese udlulela kukholamu elandelayo.Ukunyakaza ngakunye kuthatha cishe ihora, okuhlanganisa ukuhambisa isembozo sokuzivikela, irobhothi, ukumisa iloli levacuum, ukuvimbela ipulasitiki echithekile, namapayipi anyakazayo.”
Ukulungiswa kwenkundla kwalethela abantu abaningi ababenelukuluku lokufuna ukwazi.Kodwa-ke, isici sokudilizwa kwe-hydraulic yephrojekthi akugcinanga nje ngokudonsa ukunaka kwabadlulayo, kodwa futhi kudonse ukunaka kwabanye abasebenzi esizeni.
Esinye sezizathu zokukhetha ukuqhuma kwe-hydraulic 1 1/2 amayintshi.Izinsimbi zensimbi zifakwe emigqeni eminingi.Le ndlela ivumela i-Redi Services ukuthi ihlanze kahle imigoqo yensimbi ngaphandle kokubangela imifantu emincane kukhonkolo.I-Aquajet "abantu abaningi bahlabeke umxhwele-ikakhulukazi ngosuku lokuqala," kusho u-Austin.“Sibe neshumi nambili onjiniyela nabahloli abafika bezobona ukuthi kwenzekeni.Bonke bashaqekile ikhono [lerobhothi le-Aquajet] lokususa izinsimbi zensimbi kanye nokujula kokungena kwamanzi kukhonkolo.Ngokuvamile, wonke umuntu wahlabeka umxhwele, kanjalo nathi..Lona umsebenzi ophelele.”
Ukubhidlizwa ngama-hydraulic kuyisici esisodwa kuphela sale phrojekthi enkulu yokwandisa.Inkundla yesithembiso sezulu isalokhu iyindawo yezindlela zokudala, ezintsha nezisebenzayo kanye nemishini.Ngemva kokukhipha izinsika zokuqala zokusekela, abasebenzi baphinde baxhuma uphahla kumakholomu asekelayo ahlala njalo.Basebenzisa amafreyimu ensimbi nokhonkolo ukuze bakhe indawo yokuhlala yangaphakathi, futhi baqhubeke bengeza imininingwane ephakamisa ukuqeda.
Ngomhla zingama-29 kuMasingana, 2021, ngemva kokupendwa nokusayinwa izisebenzi zokwakha, i-Climate Promise Arena namalungu e-Seattle Krakens, insimbi yokugcina yaphakanyiswa yabekwa endaweni emcimbini wokufulela wendabuko.
U-Arielle Windham ungumbhali embonini yezokwakha nokubhidliza.Isithombe sihlonipha i-Aquajet.
Isikhathi sokuthumela: Sep-06-2021