Northwest Boring Co. Inc.umuyoboro w'amazi wumuyaga wamazi wari wateje umwuzure mugace kegereye umujyi, mumajyaruguru ya Seattle.
Gukenera sisitemu y’amazi y’imvura byagaragaye igihe umwobo wagaragaye mu Kuboza 2017, hagati y’ubworozi bw’amazi meza na Douglas Fir.Imirimo yo gusana by'agateganyo yarakozwe, ariko indi sinkhole yateje imbere ahantu hamwe nyuma yukwezi kumwe gusa.Nyuma yo kugenzura, hemejwe ko coupler yananiwe no kwangirika kuri 36-in.umuyoboro wari intandaro.Kubera ko Umujyi wa Mill Creek wari watangaje uyu mushinga wihutirwa ufite ingengo yimari itarenga 300.000 $, ntabwo byasabwe inzira rusange.Ubwubatsi bwa Shoreline bwatoranijwe nkumushinga, wagiranye amasezerano na NWB.
Guhuza byari biteganijwe gusimburwa byashyizwe muburyo bworoshye hagati yingo ebyiri kuri metero 11 zubujyakuzimu mubutaka bugoye.Hamwe nimitungo itimukanwa, ubujyakuzimu bwimiterere nubumenyi bwa geologiya, NWB yari izi ko sisitemu yayo ya Akkerman irambiranye yaba ihitamo ryiza ryo guhuza amazi mashya.
NWB yakoresheje Akkerman GBM 4800 Series Jacking Frame hamwe na torque nini cyane ya adapter umugereka wa auger kurambirwa.Gukomatanya byatumye bishoboka gushiraho imiyoboro ya pilato ya pilato hamwe nuduce twa metero 10 hamwe nu muyoboro wa torque na jacking imbaraga za mashini irambirana ariko mu rufunzo ruto.Igishushanyo cyakoresheje icyuma kimwe cyo gutangiza kugirango gitangire gukora kuva mu byerekezo byombi bikomeza kugabanya ihungabana kumitungo yabaturage kandi bizigama amafaranga yumushinga.
Imiterere yubutaka yari ihari yari ikonje kugeza hamwe nigitare, gisanzwe muri kano karere.Ubu butaka ntibushobora kwimurwa hamwe nicyuma gisanzwe cyindege ya NWB kuburyo NWB yateguye gukoresha ibikoresho byihariye kubutaka bugera kuri 12.000 psi UCS.Imyitozo ya bito yo guhitamo, Adapt ya Rock Drill hamwe na TriHawk drill bit, yayoboye inzira ya pilato ya pilato yashyizeho umurongo wa 140- na 110-lf kumurongo ukenewe hamwe nicyiciro cyo gutembera kwingufu.Icyarimwe, hashyizweho uburyo bukwiye bwo gusiga ubutaka kugirango hasubizwe ibiti byacukuwe bisubira mu cyuma cyoherejwe kugirango bikurweho.
Abakozi noneho biteguye kuyobora jack 110- na 140-lf, 36-in.icyuma.Mbere yikibanza, NWB yatangije inkoni yo kuyobora swivel hamwe na 36-in.gukata bihuye na 36-in.diameter.Igice cya swivel cyibikoresho cyinjije auger kuzunguruka mugihe igikata, gifite ibikoresho biramba bya karbide gage ikata bito, byacukuye ubutaka bugoye.Uru rupapuro rwa kabiri rwujujwe hamwe nuyobora inkoni swivel hamwe na cutterhead kubice byombi byamazi yimvura.
Guhuza byarangiye hamwe na 27-in.Umuyoboro utwara Vylon washyizwe imbere mugisanduku mbere yo guhuza ibikorwa remezo bihari.Kuva mu ntangiriro kugeza ku musozo umushinga wose warangiye mu gihe kitarenze ukwezi, ukemura ikibazo cy'Umujyi mu gihe gikwiye kandi cyinjira mu baturage.
Igihe cyo kohereza: Ugushyingo-04-2019