AmaHammer eDTH (Ububanzi Obuncane)

Amathuluzi e-DTH (Down-The-Hole) ahlanzekile wokubhola ama-anker anzima ukuqinisekisa ukusakazwa kwezakhiwo ezijulile nasezinhlelweni ze-geotechnical ezibalulekile ekwakhiweni kwezakhiwo. Lezi zinsiza ezincane zihlakaniphile zilungele ukusebenzisa ubuchwepheshe bokubholela phezulu phansi ukuze zakhele ama-holes ama-anker anobubanzi obujwayelekile ukusuka ku-50 kuya ku-150 milimitha, zentela izinga elithembekile lokungena ezindaweni ezahlukene zomhlaba nezindleko. Amathuluzi e-DTH ane-diamitha encane akhiwe ngendlela yokusebenza kahle kwezicelo lapho izindlela zokubhola ezijwayelekile zingakwazi ukufaka umthwalo, okuvumela abaqeqeshi ekwakheni ama-anker ngaphandle kokuphazamisa indawo kakhulu futhi kugcinwe izinga le-holes elibucayi nokuhlelwa okubalulekile ukuze kuqinisekiswe amandla okuthwala kanye nokusebenza okuqhubekayo kwesakhiwo eside. Imikhuba yokusebenza ye-DTH yokubhola ama-anker ane-diamitha encane ihlanganisa ukuhlanganisa umshayeli namathuluzi okufanele, izinhlelo zokuzivikela, kanye nezinsiza zokujikeleza ukuze kulawulwe ukuphuma kwezinto ezisuswayo nokugcina imiphetho ye-borehole ibhalansi phakathi kwenqubo yokubhola. Lezi zinsiza zisebenza ngezimvula ezisheshayo ezitholakala ebusweni bethuluzi, ziqhumisa itshe nomhlaba kancane kancane ngenkathi umoya noma uthuli luqinisekisa ukususwa kwempahla esuswa kwi-hole. Iphuzu elicacile lenza kube lula ukufaka emakhaya anobubanzi obuphansi njengamaphrojekthi okuphucula amadolobha, izithukuthuku zokumba, kanye nezikhangiso ezinobuhlanga lapho amathuluzi okujikeleza ajwayelekile engakakwazi ukufinyelela kahle. Izicelo zihlanganisa ukusungulwa kweziqephu eziphakeme nezisodwa ukuze kuqinisekiswe ukuhleleka kwezindawo zokugcina, izakhiwo zokubamba, izinhlelo zokuphakamisa, umoya ophakeme, nezixhumi ezijulile zokwakhiwa kwemigede emikhulu kanye nezinhlelo zebhuloho. Izimo zomhlaba ezifaneleka ukuhlinzeka ama-DTH anobubanzi obuncane zihluka phakathi kwezifunda ze-geotechnical, zisuka emapakasini akhuluphele kanye nezindawo ezithambile phesheya kwamatshe okuphelele nezingxenye zemvelo ezibhalwe kakhulu. Izinqubo zokubhola ezihambelana ne-percussion ziba nomvuzo omkhulu emapakasini ongawusizayo nama-formations ahambisana ne-cobbles lapho izindlela zokujikeleza ziba nezinkinga ezibucayi zokungena nokuwasha amathuluzi. Ematheni athambile nasezindaweni ze-sandstone, ama-DTH hammer ahlinzeka amandla alawulwayo alinganisa ukungaila kwemiyalo ye-borehole kanti anciphisa ukuphazamiseka kohambo lwemibondane ye-anker, izinto eziyisisekelo ezithinta amandla okuphuma kwe-anker nezinhlelo zokuhlakanipha. Ngama-micropile foundations, izingxenye zokwakha ezixhunywe nomhlaba, kanye nezinsiza zokubola izindonga emigedeni nasemikhakheni engaphansi, ubuchwepheshe be-DTH obuncane buhlinzeka ngokubhola okuhlekile okudingekayo ukuze kufinyelelwe kumazinga anembile nokwakhiwa kokuxhumana okuqinisekisiwe ngezingwe ezibekiwe. Ukukhetha imishini ngaphakathi kwalesi sigaba sokubhola ama-anker ane-diamitha encane kusekelwe kuma-abhayela amakhulu alindelekile, izici zomhlaba nezithandani, kanye nezidingo zokuba ama-holes amancane anobubanzi obuthile kumapharamitha omklamo we-geotechnical. Izinhlelo zokubhola ezihlanganisiwe zikhombisa kahle amamodeli ahlutshisiwe, izinzwa ze-percussion, nezilawuli zokujikeleza ukuze zandise ukukhiqiza emigedeni eyodwa nezinhlelo eziningi zamathuluzi, zandise ukunciphisa izidingo zabantu kanye nezindleko zokusebenza uma kuqhathaniswa nezindlela ezingajwayelekile. Ukwanda kokwamukelwa kwe-DTH percussion drilling emsebenzini wokhuselo kuveza ukukhula kokwaziwa komsebenzi, izinga le-holes, kanye nezindleko ezinembile ekufinyeleleni ukukhishwa kokusebenza ngokuhambisana nekakhuli lokwakha, ukusimamisa amabhakede, kanye nezicelo zokubhaliswa komhlaba kuyo yonke indawo yokwakha ezijulile.