Maloko a Lagrange ndi Kumanganso Damu, Kutsegulanso | 2020-11-10

Ogwira ntchito ku AECOM Shimmick anali ndi masiku 90 oti amangenso Maloko a Lagrange ndi chipinda chokhomamo madzi. M'masabata omaliza akumanganso maloko a Lagrange ndi dziwe, mabwato awiri a crane adagwiritsidwa ntchito kutsanulira konkire. Mu 1939, asilikali a US Army Corps of Engineers 'Lagrange Locks ndi Dam anamalizidwa pamtsinje wa Illinois pafupi ndi Beardsville, Illinois, kumpoto kumene Illinois imakumana ndi Mtsinje wa Mississippi. wa Mulu waukulu. Pambuyo pa zaka 81 zautumiki, ndikukonza pang'ono kokha mu 1986 ndi 1988, pamene AECOM Shimmick anayamba kubwezeretsa $ 117 miliyoni chaka chatha, loko ya 600-foot ndi damu inali itatha. "LaGrange Major Rehab / Major Maintenance ndi mgwirizano waukulu kwambiri wa zomangamanga womwe unachitidwa ndi Chigawo cha Rock Island," adatero Col. Steven Sattiger, Mtsogoleri wa Chigawo cha USACE Rock Island ndi District Engineer. "M'zaka zapitazi za 20, ntchito imodzi yokha ya Rock Island yadutsa. kukula kwa pulojekiti ya Lagrange, koma pulojekitiyi idagawidwa m'makontrakitala angapo ndipo inatenga pafupifupi zaka 10 kuti igwire, zomwe ndi zosiyana ndi polojekiti ya Lagrange. Mosiyana ndi pulojekiti ya Grange, ntchito ya Lagrange imamalizidwa munyengo imodzi yomanga. ” Kusefukira kwa madzi pafupipafupi komanso kutentha kwambiri komanso kugwiritsa ntchito kwambiri zinthu kumabweretsa kuwonongeka kwakukulu kwa konkire yokhoma komanso kuchepa kwa magwiridwe antchito komanso kudalirika kwa makina ndi magetsi. AECOM Shimmick adapatsidwa ntchito yochepetsera loko, kuchotsa nkhope yake yotseka, kukhazikitsa mapanelo atsopano okhazikika ndikumanganso nkhope ya loko ndi mapanelo a zida ophatikizidwa kuti akhale olimba. "Momwe a Corps akhazikitsira, ikhala ntchito yovuta kwambiri," adatero wotsogolera polojekiti a Bob Wheeler, yemwe amagwiranso ntchito ku Olmsted Locks ndi Dam. ntchito zomanga mozungulira maloko, zomwe zitha kusokoneza mayendedwe amtsinje Ndizovuta kwambiri kuti zinthu zichitike mwanjira imeneyi. Ntchito yotseka ndi kukhetsa madzi kwa masiku 90 idayamba mu Julayi, koma AECOM Shimmick amayenera kutsekereza maulendo angapo muzaka ziwiri zonse. zenera lotseka la masiku 90 kuyambira Julayi mpaka Okutobala 2020. Pazenera lolimba chotere, Wheeler adati akudziwa kuti zikhala "zovuta kwambiri." Gulu la AECOM Shimmick linkafunika kukhazikitsa zitseko zatsopano za miter ndi njira yatsopano yowongolera kuti atsegule ndi kutseka chitseko cha miter. "Zikalowa pansi pamadzi, [ma hydraulic cylinders] amatha kutuluka, ndipo izi zidzakhala vuto," adatero Wheeler. M'malo mwa masilinda a hydraulic, makina atsopano okweza amagwiritsira ntchito makina ozungulira omwe ali ndi ukadaulo wa spindle, womwe sunagwiritsidwepo ntchito m'maloko ku United States. A Marine Corps adatengera lusoli lotsekera zotsekera zankhondo zapamadzi zomwe zidagwiritsa ntchito masipingo kutsegula ndi kutseka zitseko ndi mabwalo a torpedo. . Wopanga ma rotary actuator Moog amapereka malangizo atsatanetsatane oyika. Kuti actuator igwire bwino ntchito, kukhazikitsa kuyenera kukhala kolondola. "Amatenga malo ochepa kwambiri kuposa masilinda achikhalidwe," adatero Wheeler. ngati ili mkati mwa inchi eyiti, ndiwe wabwino. " Zipangizo zolemera zomwe zili mkati mwa maloko a mtsinjewo ndi dziwe zimaphatikizansopo chikwanje cha matani 300 kumtunda, koloko yamatani 300 kumtunda ndi mtsinje wa matani 300 kumunsi kwa mtsinje. wa bulkhead ndi loko.Kireni ya matani 150 ili pa bwato kunja kwa khoma la mtsinje, ndipo ma tani 60 a matani awiri ali mu kanyumbako.Pali makina awiri a matani 130 ndi matani 60 pa khoma lamtunda. Makoraniwa amagwiritsidwa ntchito kuyika makalata aunyolo komanso konkire yatsopano pamakoma a loko, ndipo ma cranes amayikidwa pogwiritsa ntchito ndowa. Ogwira ntchito a AECOM Shimmick adalemba maola a 200,000 m'miyezi itatu ndi theka. Pachimake, kugwirizanitsa zipangizo zolemera ndi mauthenga kunaphatikizapo antchito a 286 omwe amagwira ntchito maola asanu ndi limodzi a maola a 10 kawiri kawiri mu chipinda cha loko cha 600-utali ndi 110-foot-wide. "Timagwira ntchito kuchokera kumbali zonse ziwiri za loko," adatero Wheeler." Mbali zonse ziwiri panthawi imodzi. Ndizodabwitsa. Tili ndi dongosolo lokonzekera bwino lomwe timakonzekera zinthu zonsezi patsogolo. Ndizofanana ndi Lean, koma zoganizira kwambiri. kuphatikiza ogwira ntchito m'munda ndi amisiri ndikupereka ndemanga tsiku ndi tsiku." JF Brennan womanga pansi pamadzi wa ku La Crosse, Wisconsin anapereka mapulani a m'madzi ndi osambira. Wheeler adati amayenera kudumphira pamtunda wa bulkhead, womwe umayenera kutsukidwa ndi kuchotsedwa.Ma valve onse oipitsidwa ayenera kukonzedwanso. dredging and clearing.Brennan ndi AECOM Shimmick anadzaza ndi konkire kuti zisagwirenso ntchito ndipo zisakhale ndi udindo wotumiza.Njira zamakono zoyeretsera zimayikidwa ndi dongosolo latsopano lolamulira. "Simungathe kutsanulira konkire pamene pali mawonekedwe monga momwe mungakhalire, kenaka muyike mkati mwa mizere itatu yowonekera ndikumaliza. Iyenera kukhala yolondola kwambiri," adatero Wheeler. Tidadula, kenako tidabowola pansi pafupifupi 6 ndi anangula, ndikuyika kapangidwe kake, ndikuyika mini shaft ndikuyiyika ku Structurally, kenako ndikuyika makina ozungulira. - ntchito yomwe mumachita nthawi zambiri mumagetsi, koma pakati pa loko kunja." Ngakhale kuti anamaliza zotsekera zonse m’masiku a 90, AECOM Shimmick anamaliza ntchitoyi panthaŵi yake, ndipo Mtsinje wa Illinois wakhala wotsegukira kutumiza mabwato kuyambira pakati pa mwezi wa October.Zisanu mwa maloko asanu ndi atatu ndi madamu m’mphepete mwa Mtsinje wa Illinois zatsirizidwa.