Source: Babbar Hanya & Mujallar Ginin Gida
Manyan rayoyi biyu na hydraulic, tare aka yi su tare da kananan rukunin ruwa masu ruwa da kuma kananan tekuna, ana kimantawa game da 60,000 cu.yd. na yankewa a kowace rana yayin da yake hanzarta share mil hudu na kogin Cowlitz da ke cike da cunkoso sakamakon fashewar dutse. St. Helens. Amma rushe manyan hanyoyin, jigilar su da kuma sake tattarawa da kuma sake buɗe su ya ɗauki makonni biyar.
Canonie-Bultema Pacific Corp., wani kamfani na Kamfanoni na Canonie, Inc., South Haven, Michigan, sun yi amfani da hanyar da ta dace da marine yayin da suke share kusan 4.4 miliyan cu.yd. na daskararren yashi daga Kogin Cowlitz a karkashin wasu kwangiloli biyu na baya-da baya ga Corungiyar Injiniyoyi. An daraja darajar kwangilar a kusan $ 20 miliyan.
Jim Collins, manajan aikin don Canonie-Bultema, ya jagoranci ƙungiyar 75 zuwa Firayim Minista da masu ba da gudummawa na aiki waɗanda ke aiki sau biyu na 85-hour, kwana bakwai a mako.
"Babban kokarin farko shi ne samun kayan aiki a nan," in ji Collins. "The Bobby J, 1700-hp, 18-in dredge mai nauyin tan 375, an warwatse a Michigan, an loda a manyan motocin jigilar kaya, an motsa mil 2200, an sake hada shi kuma ana samar da shi cikin kwanaki 30. ”
Ya ɗauki makonni biyar don motsa tan 500 "Marialyce Canonie“, 2250-hp, 24-inch dredge mil 2800 daga Baltimore. Da "Marialyce Canonie ” Ellicott ne® Alamar “Super-DRAGON®”Dredge. Dredges biyu da sauran kayan tallafi sun buƙaci rundunar sama da manyan motoci 60 don yin motsi.
An haɗo manyan dredges guda biyu kuma an ƙaddamar da su a kusa da tsakiyar tsakiyar aikin mil mil huɗu, tare da 18-in. dredge yana yin farkon aikin sa zuwa sama kuma ɓangaren 24-inch yana aiki ƙasa. An ƙaddamar da ƙananan rami guda uku daban kuma suna aiki azaman ƙungiya a ƙarshen ƙarshen aikin, yayin da duk da haka wani 14-in dredge yayi aiki da ƙarshen ƙarshen arewa.
Lokacin da aka gama wucewa, da Bobby J ya juya zuwa ƙasa da Marialyce aka juya sama sama fadada da yanke zuwa kusan cikakken tashar nisa. Babban rukunin guda biyu sannan ya gudanar da tsabtatawa na ƙarshe.
Babban dredges kowane yana jujjuyawa game da nisan 200 ft yayin da yake zazzagewa game da spud mai aiki. An ɗora manyan ƙananan gado biyar da shida a kan tsaran-ɗakansu don ɗaukar bankin 19 ft. Kowane rukunin zai yi gaba game da 8 ft a kowane saiti, tare da ƙarin 80 ft. Tsawon bututu da ke kan ruwa ana saka su a layin cirewa kamar yadda ake buƙata.
Manyan jan layi guda huɗu, Lima 2400 tare da 8 cu.yd. guga, Bucyrus-Erie 88B tare da 5 cu.yd. guga, Ba'amurke 7260 da P&H 966, duka an saka su 4 cu.yd. bokiti sun yi gefen katako tare da ƙarshen bankunan tashar kuma sun gama gangaren gefen 350 zuwa 450 mai faɗi.
Da farko, ana ta kwasar ganimar daga maɓuɓɓugan ruwa zuwa karkara. An yi amfani da daskararrun Fiat-Allis 21B guda uku da wasu injunan Caterpillar guda biyu don tura saman tarin ganimar don yin dike na biyu da keɓaɓɓun filayen kuma don yanke magudanar ruwa daga bayan kwandon ɓoyayyen kayan kwatancen zuwa kogin. Kwantunan da aka kirkira an cika su a wasu lokutan biyu na manyan hanyoyin biyu kuma har yanzu suna da wadatuwa idan ana buƙata.
A mafi yawancin lokuta, ƙasa a cikin farfajiyar ambaliyar ana kawai a haɓaka ta ɗaukaka, amma wasu masu mallakar suna da takamaiman amfani. Motorcycleungiyar keɓaɓɓun babura mallakin babban fareti na ɗauka don kera ginin da ke gefen bakin kogin da ke fuskantar ja da kuma matattarar motocin wucewa daga cikin ganimar da aka yi.
Matsakaicin yawan samarwa yau da kullum ya kusan 30,000 cu.yd. tare da Ellicott® Brand "Super-DRAGON ™" Marialyce, 15,000 cu.yd. ga Bobby J, da 15,000 cu.yd. tare da sauran.
Matsaloli uku masu mahimmanci da Collins suka ambata sun kasance ƙasa mai tsayayye a wuraren zubar da kaya, abrasion akan yankan gefuna, da neman ƙwararrun ma'aikata.
"Yawanci busassun da kuma tsayayyen dusar kankara a wuraren da ake zubar da su sun yi kauri lokacin da aka cika su da ruwan aiki daga ramuka," in ji Collins. “Sake fasalin ganimar da aka yi don gina dikes a gefen ƙasa aiki ne mara fa'ida ga dozers kuma an yi shi da ƙarfi ta hanyar laushi, ƙafa mara tushe.
“Toka mai kama da yashi mai kaifi ne kuma mai gogewa. Ya haifar da mummunan lalacewa a kan yankan yankan da sassan motsi na injunan ƙasar da kuma cikin masu yankan kai, masu sanya abubuwa, lambobin famfo da faranti masu layi a kan raƙuman ruwa. Masu samar da kayayyaki ba su iya ci gaba da biyan buƙatun kwatsam ga ɓangarorin maye gurbinsu ba. Dole ne mu ƙirƙira yawancin ɓangarorin maye gurbinmu kuma muyi gyara da wahalar fuskantar ɓangarorin da muka yi amfani dasu fiye da al'ada.
Collins ya kara da cewa "A tarihance, yankin arewa maso yamma ba shi da babban aikin hakar kogi, kuma Corps of Engineers sun kula da yawancinsu da kayan aikinsu da kuma mutanensu," in ji Collins.
"Amma wannan aikin ya kasance babba da yawa na kayan aiki da gogaggun ma'aikata dole ne a shigo da su daga tsakiyar yamma da kudu don biyan buƙatu na musamman bayan fashewar."
Rubuta daga Babbar Hanya & Mujallar Ginin Gida