Izitshixo zeLagrange kunye nokwakhiwa ngokutsha kweDama, Ukuvulwa kwakhona|2020-11-10

Abasebenzi be-AECOM Shimmick babeneentsuku ezingama-90 zokuphinda bakhe i-Lagrange Locks kunye negumbi lokutshixa ledama lokukhupha amanzi. Ngeeveki zokugqibela zokwakhiwa ngokutsha kwezitshixo zaseLagrange kunye nedama, izikhephe ezimbini zeecrane zazisetyenziselwa ukugalela ikhonkrithi. Ngo-1939, i-US Army Corps ye-Engineers 'Lagrange Locks kunye neDama yagqitywa kuMlambo wase-Illinois kufuphi ne-Beardsville, e-Illinois, emantla apho i-Illinois idibana noMlambo i-Mississippi. yodaka olukhulu. Emva kweminyaka engama-81 yenkonzo, kunye nokulungiswa okuncinci kuphela kwi-1986 kunye ne-1988, xa i-AECOM Shimmick yaqala ukubuyisela i-117 yezigidi zeedola kunyaka ophelileyo, i-lock ye-600-foot kunye nedama iphelelwe yisikhathi. "I-LaGrange Major Rehab / Maintenance Main iyona nkontileka enkulu yokwakha enye eyenziwa yiSithili saseRock Island," utshilo uCol. Steven Sattiger, uMlawuli weSithili we-USACE Rock Island kunye neNjineli yeSithili. "Kwiminyaka eyi-20 edlulileyo, iprojekthi enye kuphela ye-Rock Island idlulile. Ubungakanani beprojekthi yeLagrange, kodwa loo projekthi yahlulahlulwe yaba ziikhontrakthi ezininzi kwaye yathatha phantse iminyaka eli-10 ukuphumeza, nto leyo echaseneyo neprojekthi yeLagrange. Ngokungafaniyo neprojekthi yaseGrange, iprojekthi yaseLagrange igqitywe ngexesha elinye lokwakha.” Izikhukula rhoqo kunye namaqondo obushushu agqithisileyo kunye namazinga aphezulu okusetyenziswa akhokelela ekuwohlokeni okukhulu kwekhonkrithi etshixwayo kunye nokuncipha kokusebenza kunye nokuthembeka koomatshini kunye neenkqubo zombane. I-AECOM Shimmick yayinikwe umsebenzi wokuphelisa amanzi emzimbeni wokutshixa, ukususa ubuso bayo bokutshixa, ukufaka iiphaneli ezintsha ezenziweyo kunye nokwakha kwakhona ubuso obutshixayo ngeepaneli zezixhobo ezizinzisiweyo zokuqina. “Indlela emiswe ngayo iCorps, izakuba ngumsebenzi onzima kakhulu,” utshilo umlawuli weprojekthi uBob Wheeler, naye owayesebenza kwiOlmsted Locks kunye neDama. imisebenzi yokwakha ejikeleze izitshixo, ezinokuthi ziphazamise ukuhamba kwemilambo Kunzima ngokwenene ukwenza izinto ngolo hlobo. Ukuvalwa kweentsuku ezingama-90 kunye nomsebenzi wokuhambisa amanzi waqala ngoJulayi, kodwa i-AECOM Shimmick bekufanele ukuba yenze utshixo izihlandlo ezininzi kuyo yonke le projekthi yeminyaka emibini. Ifestile evaliweyo yeentsuku ezingama-90 ukusuka ngoJulayi ukuya ku-Okthobha ka-2020. Kwifestile eqinile ngolo hlobo, uWheeler wathi uyazi ukuba kuya kuba “nzima kakhulu.” Iqela le-AECOM Shimmick lalidinga ukufaka amanqaku amatsha e-ankile yomnyango kunye nenkqubo entsha yokulawula enokucwangciswa ukuvula nokuvala umnyango we-miter.Ngenxa yezikhukhula kwisayithi, i-Corps yayifuna ukutshintsha iisilinda ze-hydraulic zendabuko ngeteknoloji entsha. "Xa zingena ngaphantsi kwamanzi, [iisilinda zehydraulic] zivame ukuvuza, kwaye oko kuya kuba yingxaki," utshilo uWheeler. Endaweni ye-hydraulic cylinders, indlela entsha yokunyusa isebenzisa i-rotary actuator enobuchwephesha obujikelezayo, obungazange busetyenziswe ngaphambili kwizitshixo e-United States.I-Marine Corps yamkele obu bugcisa bokutshixa kwiinkwili ezisebenzisa i-spindles ukuvula nokuvala i-hatches kunye ne-torpedo bays. . Umenzi we-Actuator ye-Rotary i-Moog inikeza imiyalelo ecacileyo yokufakela.Ukuze i-activator isebenze ngokufanelekileyo, ukuphunyezwa kufuneka kuchaneke. "Bathatha indawo encinci kakhulu kuneesilinda zemveli," utshilo u-Wheeler."Xa silinganisa i-shaft kunye ne-splines apho i-activator ye-rotary ifakwe khona, kufuneka ibe phakathi kwewaka le-intshi - ngokusisiseko kwizitshixo kunye namadama anje, ukuba ingaphakathi kwesibhozo se-intshi, ulungile " Izixhobo ezinzima ngaphakathi kwendawo yokutshixa yomlambo kunye nedama ziquka iitoni ezingama-300 zekhreyini ecaleni komhlaba, ikhreyini yeetoni ezingama-300 phezulu kunye neetoni ezingama-300 ezantsi komlambo. ye-bulkhead kunye ne-lock.I-crane ye-150-toni ifumaneka kwi-barge ngaphandle kodonga lomlambo, kunye nee-cranes ezimbini ze-60-toni zikho kwi-cabin. Kukho ii-cranes ezimbini ze-130-toni kunye ne-60-toni ye-crane eludongeni lomhlaba. Ezi cranes zisetyenziselwa ukubeka i-mail yetsheyina kunye nekonkile entsha kwiindonga zokutshixa, kwaye iikhreyini zibekwe kusetyenziswa amabhakethi. Abasebenzi be-AECOM Shimmick barekhoda iiyure ezingama-200,000 kwiinyanga ezintathu ezinesiqingatha. Kwincopho, ulungelelwaniso lwezixhobo ezinzima kunye nonxibelelwano lubandakanya abasebenzi be-286 abasebenza iiyure ezintandathu ze-10 iiyure eziphindwe kabini kwindawo yokutshixa i-600-foot-long kunye ne-110-foot-wide lock room. "Sisebenza phantsi ukusuka kumacala omabini esitshixo," utshilo u-Wheeler. "Omabini amacala ngexesha elinye. Kuyamangalisa. Sinenkqubo enkulu yokucwangcisa apho sicwangcisa zonke ezi zinto ngaphambili. Ifana ne-Lean, kodwa igxininise ngakumbi ukubandakanya abasebenzi basendle kunye nabasebenzi bezandla kunye nokubonelela ngengxelo yonke imihla. " I-subcontractor engaphantsi kwamanzi uJF Brennan waseLa Crosse, eWisconsin unikezele ngezicwangciso zaselwandle kunye nabatshuzi.U-Wheeler uthe kufuneka bantywile kwiindawo zokubeka i-bulkhead, ekwakufuneka zicocwe kwaye zisuswe.Zonke iivalve zongcoliseko kufuneka zilungiswe.Idama lika-1939 lalinodonga olusisigxina i-dredging and clearing.UBrennan kunye ne-AECOM Shimmick bayizalisa ngekhonkrithi ukwenzela ukuba ingasayi kuphinda isebenze kwaye ayiyi kuba noxanduva lokuthumela.Iinkqubo zokucoca zanamhlanje zifakwe kwinkqubo yokulawula entsha. "Awukwazi ukuthulula ikhonkrithi apho kukho i-formwork njengoko uqhele ukwenza, uze uyibeke ngaphakathi kwemigca emithathu yesikrini kwaye ugqibe. Kufuneka ichaneke kakhulu, "u-Wheeler uthe. "Emva koko, inkqubo yesakhiwo esivela kwi-anchorage ikhonkrithi Siyinqumle, emva koko siqhube phantsi malunga neenyawo ezi-6 ngee-ankile, sibeke isakhiwo, kwaye sibeke le mini shaft kwaye siyibophe kwi-Structurally, kwaye sibeka i-activator ye-rotary kuyo. - umsebenzi oqhele ukwenza kwisityalo samandla, kodwa phakathi kwesitshixo ngaphandle." Nangona ukugqiba zonke izitshixo kwixesha le-90-day, i-AECOM Shimmick yagqiba iprojekthi ngexesha, kwaye uMlambo wase-Illinois uvulelwe ukuthunyelwa kweenqanawa ukususela phakathi ko-Oktobha.Izihlanu kwii-lock ezisibhozo kunye namadama ecaleni koMlambo wase-Illinois zigqityiwe.