Imishini Yokubhoboza Iphayiphi

Ukufakwa kwe-Self-Drilling Anchor (SDA) kumelana nezindlela ezikhethekile ezibalulekile ngaphakathi komkhakha we-micropiling kanye nokuzinza komhlaba ekwakhiweni kweziqalo ezijulile. Izinsiza zokudonsa ze-SDA zenzelwe ukudonsa izimbobo ngesikhathi esifanayo nokufaka ama-anchora aphakeme noma akhethwayo emsebenzini owodwa oqhubekayo, kusho ukuthi awukho udinga izigaba ezihlukene zokudonsa nokukhipha ama-casing. Le ndlela entsha ihlanganisa ukuhlinzekwa, i-grouting, kanye nezindlela zokubopha zibe yindlela enye ehlangene, okwenza kube lula kakhulu ezinhlelweni ezinzima ze-geotechnical lapho izindlela zokubopha ezivamile zikhombisa ukunweba isikhathi noma zingafaneleki. Le teknoloji ibalulekile kumaphrojekthi adinga ukuqina komhlaba ngokushesha, ikakhulukazi ezimweni lapho ukuzinza kwezimbozo kungagcinwa ngaphandle kokufakwa kwama-anchor ngesikhathi esisodwa. Izigaba zokudonsa ze-SDA zisebenzisa izinhlelo zokudonsa ezineholo ezithumele i-grout ngqo nge-string yokudonsa njengoba i-anchor iqhubekela phambili emhlabeni. Izinsiza zokudonsa zisebenzisa imishini yokuzungezisa ephezulu noma yokushaya ukuze zingeze ezihlahleni ezahlukahlukene zomhlaba nezinto eziwukuhlola, kusuka kumaseli soft and silts kuye kwezikhephe eziqinile, okwenza kube lula ngezimo ezahlukene ze-geological. Umfutho we-grouting kanye nokuthuthukiswa kokubopha kusebenza ngokucophelela ukuze kuqinisekiswe ukudluliselwa okufanele komthwalo phakathi kwe-element ye-anchor kanye nomhlaba noma inhlaka yokwakha okukhona. Abatekinoloji bakhetha usayizi ofanele bezinhlangothi, izimfuneko ze-grout, nezindonga zokufaka ngokusekelwe emiphumeleni yokuhlolwa komhlaba kanye nezidingo zomthwalo wokwakha, lapho izicelo ezivamile zifaka ukufakwa kwama-anchor ngaphakathi kwezingqimba ezihlala phakathi kwezinyathelo eziningi zamamitha ukuya phezulu kuka-50 meters ezimweni eziyinselele. Ukukhetha imishini yokusebenza ku-SDA kuxhomekeka kakhulu ezimweni zezwe, izidingo zokukwazi kwe-anchor, kanye nezikhala zokufinyelela kumaphrojekthi. Izinsiza ezincane ezisendaweni ezizenzakalelayo noma ezikwi-chassis ye-crawler ziphonsa izinzuzo ezindaweni zedolobha ezinqamulekile kanye nezindawo ezishubile, kuyilapho izinhlelo ezinkulu ezibekwe kumatruck noma emabhodweni zinikeza umjikelezo ophakeme wokudonsa obalulekile ku-dank rock anchoring. Izinsiza ze-SDA ezihamba phambili zihlanganisa imishini yokubuka umfutho, ukukala i-torque, kanye nezinqubo zokuhlinzeka i-grout ukuze kuqinisekiswe ukulawula kwekhwalithi nokuhlinzeka ngemibhalo ephelele ye-paramitha yokufinyelela ukuqinisekiswa kwezinhlaka zokwakhiwa. Izindlela zokudonsa ze-SDA zixazulula izinselelo ezahlukahlukene zokwakha okuhlanganisa ukuqiniswa kwezinyathelo zokuvikela izakhiwo, ukwesekwa kwe-excavation ejulile ezisekelweni zedolobha, ukulungiswa kwezidubedube, ukuqiniswa kwezingxenye zangaphansi emabhizinisini nasezindleleni, kanye nezinhlinzeko ezihlala njalo zezindonga zokugcina nezakhiwo zezimvula. Le ndlela ibalulekile kakhulu ezimweni ezihlanganisa izimo zomhlaba ezinzima nezinhlelo zomsebenzi eziqondile, njengoba ukususa izigaba ezihlukene zokukhipha ama-casing kunciphisa kakhulu isikhathi sokufaka nemali ehlobene nephrojekthi. Abaklami be-geotechnical bayathanda i-SDA yokudonsa emakhasini edinga ukwethembeka okuphezulu kumaphrofayela omhlaba ahlukeneyo, izimo ze-hydrogeological eziyinselele, kanye namaphrojekthi lapho ukugcina ukujula kwezimbozo ngesikhathi sokufaka kubalulekile kumphumela wezakhiwo kanye nokuphila isikhathi eside kwezinhlelo zeziqalo.