Tsarin jijiya da aka sanya a kan tushe na injin hakowa suna wakiltar wani rukuni na musamman na kayan inganta ƙasa wanda ke haɗa fasahar jijiya mai matsa lamba tare da fa'idodin daidaiton tsari da motsi na dandamali na hakowa na musamman. Waɗannan tsarin suna da mahimmanci ga injiniyan tushe mai zurfi na zamani, musamman a cikin aikace-aikacen da ke buƙatar saurin daidaita ƙasa, rufewa, ko gyaran ƙasa a cikin ayyukan geotechnical daga kariya ga kayan aiki na ƙananan ƙasa zuwa haɓaka ababen more rayuwa na manyan girma. Tushe na injin hakowa yana zama dandamali da aka tsara don samar da ƙarfin mast da ake buƙata, rarraba ƙarfin hydraulic, da kuma daidaiton aiki da ake buƙata don gudanar da ayyukan jijiya na sarrafawa. Tsarin jijiya guda ɗaya, a cikin wannan tsarin, yana aiki ta hanyar shigar da slurry na siminti mai matsa lamba mai ƙarfi cikin ƙasar ta hanyar nozzles da aka yi daidai, yawanci a ƙarƙashin matsa lamba daga 200 zuwa 600 bar dangane da yanayin ƙasa da zurfin da aka nufa. Ruwan jijiya mai matsa lamba yana lalata da kuma sa ƙwayoyin ƙasa a kusa su zama ruwa, wanda daga bisani aka haɗa tare da jijiya da aka shigar don ƙirƙirar ginshiƙan ƙasa da aka gyara a cikin gida. Wannan tsari yana ƙirƙirar shinge ko yankuna na ingantaccen halayen ƙasa ba tare da buƙatar hakowa ba, yana mai da shi musamman mai amfani a cikin birane masu cunkoso da yankunan ruwa masu laushi. Ayyukan farko na wannan rukuni na kayan aikin sun haɗa da gina katanga masu katsewa don kula da ruwa a cikin ginin dam da gyaran kana, daidaita ƙasa a kusa da kayan aikin da aka binne da ƙananan gini, tsayar da yaduwar gurbataccen ƙasa, ƙara ƙarfi a cikin ƙananan ƙasa mai laushi don inganta ƙarfin ɗaukar nauyi, da ƙirƙirar yankuna na tallafi na tsari a ƙarƙashin tushe da aka riga aka gina waɗanda ke buƙatar tallafi. Kayan aikin yana da tasiri a cikin nau'ikan ƙasa da yawa, daga yashi mai laushi da silts zuwa ƙasa mai lalacewa da dutsen da aka lalata, tare da diamita na ginshiƙan gyara yawanci yana tsakanin 0.6 zuwa 1.5 mita dangane da halayen ƙasa da ƙayyadaddun famfo. Tsarin kayan aikin da ke akwai a cikin wannan rukuni yana bambanta a cikin ƙirar mast, ƙarfin juyawa, canjin famfo, da zurfin hakowa. Tsarin ruwa guda ɗaya yawanci yana amfani da famfo na piston mai matsa lamba tare da fitarwa mai canzawa don kula da matsa lamba mai ɗorewa yayin ayyukan gyara. Wasu tsarin suna haɗa teburin juyawa wanda ke ba da damar jijiya ko juyawa gaba ɗaya, wanda ke inganta ingancin haɗawa da daidaiton ginshiƙan. Wasu suna amfani da wuraren shigarwa masu tsayayye tare da ci gaba da zurfi. Tsarin lura da jijiya yana bambanta daga na'urorin da aka saita zuwa kanun juyawa, tare da ƙirar nozzle da aka tsara musamman don aikace-aikacen ruwa guda ɗaya inda jijiya mai lalata da haɗin jijiya ke faruwa a lokaci guda. Ka'idodin zaɓi don sayen kayan aikin suna mai da hankali kan zurfin gyara da ake buƙata, tsarin ƙasa, buƙatun diamita na ginshiƙan da ake so, yawan jijiya da aka yi tsammani, ƙuntatawar samun damar shafin, da yanayin yanayi. Masu kwangila dole ne su tantance ƙarfin famfo dangane da lokacin gyara, tsayin mast dangane da zurfin gyara mafi girma, da girman dandamali dangane da tsarin shafin. Rarraba ƙasa—musamman ƙarfin jujjuyawar da ba a yi amfani da ita ba da permeability—yana shafar buƙatun matsa lamba na jijiya da tsarin ginshiƙan da za a iya cimmawa. Ka'idodin masana'antu da ke kula da ƙira, aiwatarwa, da ingancin kulawa sun haɗa da EN 12716 (Aiwar da ayyukan geotechnical na musamman—Jijiya), EN 14679 (Haɗin zurfi), EN 1997-1 (Eurocode 7—Ƙirar geotechnical), ISO 6913 (Ka'idodin jijiya), da DIN 4093 (Ka'idodin jijiya). Waɗannan ka'idodin suna kafa buƙatun ƙarfin jijiya na asali, hanyoyin tabbatar da ingancin ginshiƙan, da kuma hanyoyin tabbatar da inganci masu mahimmanci don bin ƙa'idodin doka da amincin aiki na dogon lokaci.
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