Ground anchors na self-drilling sune sulhu na ƙarfafawa na zamani da aka tsara don amfani na dindindin da na wucin gadi a cikin aikin gina ƙasa, geotechnical engineering, da aikin ƙasa. Waɗannan anchors na musamman suna haɗa da hollow drill stem tare da cutting head na integral, lallai don haɗaɗɗun drilling da kaddamar da anchor a cikin aikin guda ɗaya. Tsarin na asali galibi ya ƙunshi steel tubes na ƙarfi, galibi hollow don sauƙaƙa grout injection, haɗaɗɗun tare da geometry na cutting-tooth na zamani da aka tsara don shiga cikin ƙasa mai ƙarfi, ƙasa mai lalacewa, da ƙasa mai ƙarfi. Elemetin anchor ɗin ya kasance daga steel rods na tensile ko strand, wanda aka ɓata a cikin hollow stem, lallai don grouting ya faru bayan kaddamarwa don ƙarfafawa ƙarfin ɗaukar mai da ƙarfi na korosi.
Wannan mai tubular steel na wakiltar element ɗin gine-gine na asali a cikin tsarin kulawa na ƙasa na zamani, musamman ga wurin shigar da anchor a cikin yanayin geotechnical da neman aiki. Tsarin hollow ya ba da damar aikin drilling da grouting a lokaci guda, wanda ke rage lokacin shigar da kaya da na'urorin kwakwalwa idan aka kwatanta da hanyoyin kulawa na al'ada. An yi shi daga seamless ko welded steel tubing na karfin gaske, hollow bars suna riƙe karfin ƙarfe na ƙarfe don tabbatar da aikin drilling da ƙarfin ƙarfin ƙarfe yayin da suke riƙe ƙarfin gini a lokacin shigar da shigarwa da shigarwa.
Drill bits sune kayan aikin yanke-yanke na musamman waɗanda suke da mahimmanci ga tsarin anchor na kai tsaye, waɗanda aka tsara don ci gaba ta hanyar strata na ƙasa yayin da suke ƙirƙirar borehole don shigar da anchor na ƙasa. Waɗannan bits an tsara su don yanke da kuma kwashe kayan ƙasa, suna aiki azaman makiyayan yanke-yanke na farko a cikin fasahar hollow-bar anchor na kai tsaye. Haɗin bit yawanci ya ƙunshi kai na yanke-yanke na ƙarfe mai karfi tare da grooves ko haɓaka na musamman, da aka haɗa zuwa shaft na hollow-bar wanda ke ba da damar drilling da grout injection a lokaci guda. Geometry na yanke-yanke da taro na kayan an tsara su don jure stress mai mahimmanci daga makamantansu na juyawa da na jiki yayin da suke riƙe aikin drilling a cikin yanayin geotechnical na canje-canje.
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