I-Northwest Boring Co. Inc. (NWB) yase-Woodinville, e-Washington, yafakwa inkontileka encane yi-Shoreline Construction ukuze ithathele indawo ephuthumayo indawo ye-City of Mill Creek ehlulekile engu-36-in.ipayipi likathayela lamanzi emvula elidale izikhukhula endaweni engaphansi kwedolobha, enyakatho nje ye-Seattle.
Isidingo sokulungisa uhlelo lwamanzi eziphepho sibonakale lapho kuvela umgodi wokucwilisa amanzi ngoZibandlela wezi-2017, phakathi kwe-Sweetwater Ranch kanye nomakhelwane baseDouglas Fir.Kwenziwa umsebenzi wokulungisa wesikhashana, kodwa kwavela omunye umgodi endaweni efanayo ngemva nje kwenyanga eyodwa.Ngemuva kokuhlolwa, kunqunywe ukuthi i-coupler ehlulekile kanye nomonakalo ku-36-in.ipayipi kwaba imbangela eyinhloko.Ngenxa yokuthi iDolobha laseMill Creek lalimemezele lokhu njengephrojekthi ephuthumayo enesabelomali esingaphansi kuka-$300,000, inqubo yokubhida esidlangalaleni yayingadingeki.I-Shoreline Construction yaqokwa njengosonkontileka, okwafaka inkontileka engaphansi kwe-NWB.
Ukuqondanisa okuhlelelwe ukushintshwa kwakubekwe endaweni encane phakathi kwezindlu ezimbili ekujuleni okungamamitha ayi-11 endaweni enzima.Njengoba kunezindawo ezithengiswayo ezincane, ukujula kokufakwa kanye nezimo zejoloji, i-NWB yayazi ukuthi uhlelo lwayo oluyisicefe oluqondiswa yi-Akkerman lwalungaba inketho efanelekile yokufaka ukuxhumeka okusha kwamanzi emvula.
I-NWB isebenzise i-Akkerman GBM 4800 Series Jacking Frame yayo ene-adaptha ye-torque ephezulu yokunamathisela i-adaptha ye-auger boring.Inhlanganisela yenze kwaba nokwenzeka ukufaka amaphase eshubhu lokushayela kanye namasegimenti wamapayipi angu-10-ft nge-torque namandla e-jacking omshini oyisicefe we-auger kodwa ngaphakathi kwe-shaft encane.Idizayini isebenzise ishafu yokuqalisa eyodwa ukuze iqalise ukugijima isuka nhlangothi zombili ephinde yanciphisa ukuphazamiseka kwezakhiwo zabahlali futhi yonga ezindlekweni zephrojekthi.
Izimo zomhlabathi ezazikhona zaziyiqhwa kuze kube yidwala, okuyinto evamile kule ndawo.Le ndawo ayikwazi ukususwa ngekhanda elijwayelekile leshubhu lokushayela ukuze i-NWB ihlele ukusebenzisa amathuluzi akhethekile kuze kufike ku-12,000 psi UCS ground.I-drill bit of choice, i-Rock Drill Adapter ene-TriHawk drill bit, ihole amaphase eshubhu lokushayela elisungule ukuqondanisa okungama-140- kanye nama-110-lf emugqeni odingekayo kanye nebanga lokugeleza kwamandla adonsela phansi.Ngasikhathi sinye, kwasetshenziswa indlela yokugcobisa efanelekile yomhlabathi ukuze kukhishwe ama-cuttings ambiwe abuyiselwe ku-shaft yokuvula ukuze asuswe.
Abasebenzi babe sebelungiselela ukuqondisa u-jack i-110- kanye ne-140-lf, 36-in.isikhwama sensimbi.Ngaphambi kwe-casing, i-NWB yethula i-swivel yenduku yomhlahlandlela ene-36-in.i-cutterhead ehambisana nabangu-36-in.ubukhulu bebhokisi.Ingxenye ejikelezayo yamathuluzi imunce ukuzungezisa kwe-auger ngenkathi i-cutterhead, ifakwe amathuluzi aqinile we-carbide gage cutter bit tooling, igubha inhlabathi enzima.Lokhu kudlula kwesibili kuqedwe ngenduku yomhlahlandlela enesihloko sokusika kuzo zombili izingxenye zamanzi eziphepho.
Ukulungiswa kwabe sekuqediwe nge-27-in.Ipayipi elithwala i-Vylon elibekwe ngaphakathi kwebhokisi ngaphambi kokuthi kuxhunywe nengqalasizinda ekhona.Kusukela ekuqaleni kuze kube sekugcineni wonke umsebenzi waphothulwa esikhathini esingaphansi nje kwenyanga, ukuxazulula inkinga yeDolobha ngesikhathi kanye nokugxambukela okuncane kubahlali.
Isikhathi sokuthumela: Nov-04-2019