Northwest Boring Co. Inc. (NWB) yeWoodinville, Washington, yakabatiswa chibvumirano neShoreline Construction kuti chitsive chimbichimbi cheGuta reMill Creek rakakundikana 36-in.pombi yemarata yemvura yemupupuri yanga ichikonzera mafashamo munharaunda yepasi peguta, kuchamhembe kweSeattle.
Kudiwa kwekugadziriswa kwemvura yemadutu kwakaonekwa pakaonekwa gomba muna Zvita 2017, pakati peSweetwater Ranch neDouglas Fir.Basa rokugadzirisa kwenguva pfupi rakaitwa, asi imwe nzvimbo yokunyura yakavapo munzvimbo iyoyo mwedzi mumwe chete gare gare.Mushure mekuongorora, zvakatemwa kuti yakakundikana coupler uye kukuvara kune 36-in.pombi ndiyo yaiva honzeri.Nekuda kwekuti Guta reMill Creek rakanga razivisa ichi chirongwa chechimbichimbi chine bhajeti isingasviki mazana matatu ezviuru zvemadhora, chirongwa chekubhidha veruzhinji chaisadikanwa.Shoreline Construction yakasarudzwa semugadziri wekondirakiti, izvo zvakaita kuti basa risingachinjike kuNWB.
Kurongeka kwakarongerwa kutsiviwa kwakaiswa mukati mechikamu chakamanikana pakati pedzimba mbiri pakadzika 11-ft muvhu rakaoma.Nezvivakwa zvidiki, hudzamu hwekuisa uye mamiriro ejoloji, NWB yaiziva kuti Akkerman inotungamirwa inobhowa system yaizova sarudzo yakanaka yekuisa yekubatanidza kutsva kwemvura yemadutu.
NWB yakashandisa Akkerman GBM 4800 Series Jacking Frame ine yakakwirira-torque casing adapta yakanamatira ye auger kufinha.Iko kusanganiswa kwakaita kuti zvikwanise kuisa pilot tube pass uye 10-ft pombi zvikamu zvine torque uye jacking simba remushini unofinha weauger asi mukati mediki shaft.Iyo dhizaini yakashandisa imwe yekumisikidza shaft kuti itange kumhanya kubva kumativi ese ayo akawedzera kuderedza kuvhiringika kudzimba dzevagari uye kuchengetedza pamitengo yeprojekiti.
Mamiriro epasi aivapo akanga ari glacial till ane dombo, izvo zvinowanzoitika munharaunda iyi.Nzvimbo iyi haigone kubviswa neyakajairwa pilot chubhu chidhiraivho saka NWB inoronga kushandisa yakakosha maturusi anosvika 12,000 psi UCS pasi.Iyo yekudhirowa yesarudzo, iyo Rock Drill Adapter ine TriHawk drill bit, yakatungamira pilot chubhu yakapfuura iyo yakamisa 140- uye 110-lf magadzirirwo pamutsetse unodiwa uye giredhi rekuyerera kwegiravhiti.Panguva imwe cheteyo, ivhu rakakodzera rekuzora raishandiswa kukweshera zvicherwa zvakacherwa kudzokera kushaft yekumisikidza kuti zvibviswe.
Vashandi vakabva vagadzirira kutungamira jack iyo 110- uye 140-lf, 36-mukati.simbi casing.Pamberi pebhokisi, NWB yakatanga gidhi tsvimbo inotenderera ine 36-in.cutterhead iyo yakafanana ne36-in.casing diameter.Iyo inotenderera chikamu chechishandiso chakabata kutenderera kwe auger uku iyo cutterhead, ine yakasimba carbide gage cutter bit tooling, yakachera ivhu rakaoma.Uku kupasa kwechipiri kwakapedzwa negwara tsvimbo inotenderera ine musoro wekucheka zvikamu zvese zvemvura yemadutu.
Kugadziriswa kwakazopedzwa ne27-in.Vylon inotakura pombi yakamisikidzwa mukati mecasing isati yabatanidzwa kune iripo zvivakwa yakagadzirwa.Kubva pakutanga kusvika pakupera basa rose rakapedzwa munguva isingasviki mwedzi, kugadzirisa dambudziko reGuta panguva yakakodzera paine kupindira kudiki kuvagari.
Nguva yekutumira: Nov-04-2019