ʻO kahi kaiapuni koʻikoʻi i hoʻokumu ʻia e nā hoʻololi honua e hōʻike ana i ka George Fisher Zinc Mine ma ka ʻāina mining Mount Isa ma North Australia. No laila, ua makemake ka mea nona, ʻo Xstrata Zinc, kahi hui o ka hui mining honua ʻo Xstrata Plc., e hōʻoia i ka pale ʻana i ka corrosion maikaʻi ma o ka hoʻopili piha ʻana o nā heleuma i loko o ka lua drill i ka wā o nā hana hoʻokele.
Ua hāʻawi aku ʻo DSI Australia i nā kemika TB2220T1P10R Posimix Bolts no ka hoʻopaʻa ʻana. He 2,200mm ka lōʻihi o nā bolts a he 20mm ke anawaena. I ka hapaha ʻehā o 2007, ua hoʻokō ʻo DSI Australia i kahi ʻano hoʻāʻo ma ka launa pū ʻana me Xstrata Zinc ma ka pūnaewele. Ua mālama ʻia ka hoʻāʻo ʻana no ka loaʻa ʻana o ka nui o ka encapsulation no nā heleuma ma o ka hoʻololi ʻana i ka nui o nā lua a me nā pahu resin.
Hiki ke koho ʻia mai nā pahu resin 1,050mm lōʻihi me nā mea ʻelua a me nā mea lohi i nā anawaena 26mm a me 30mm. I ka hoʻohana ʻana i ka pahu pahu 26mm i nā lua borehole 35mm maʻamau no kēia ʻano heleuma, ua loaʻa kahi degere o ka encapsulation o 55%. No laila, ua hana ʻia ʻelua mau hoʻokolohua ʻē aʻe.
- ʻO ka hoʻohana ʻana i ka pahu pahu resin like a me ka hōʻemi ʻana i ke anawaena borehole i ka palena liʻiliʻi o 33mm i loaʻa i kahi encapsulation o 80%.
- ʻO ka mālama ʻana i ke anawaena borehole o 35mm a me ka hoʻohana ʻana i kahi pahu resin nui aʻe me ke anawaena o 30mm i hopena i kahi encapsulation o 87%.
Ua loaʻa i nā hoʻokolohua ʻokoʻa ʻelua ke kiʻekiʻe o ka encapsulation i koi ʻia e ka mea kūʻai. Ua koho ʻo Xstrata Zinc i ka 2 ʻokoʻa no ka mea ʻaʻole hiki ke hoʻohana hou ʻia nā ʻāpana drill 33mm ma muli o nā ʻano pōhaku kūloko. Eia kekahi, ʻoi aku ka nui o nā kumukūʻai kiʻekiʻe no nā pahu pahu resin nui ma mua o ka uku piha ʻia e ka hoʻohana nui ʻana o ka 35mm drill bit.
Ma muli o ka holomua o ka hoʻāʻo ʻana, ua hāʻawi ʻia ʻo DSI Australia i kahi ʻaelike no ka hoʻolako ʻana i nā heleuma Posimix a me nā pahu pahu resin 30mm e ka mea nona ka mine, ʻo Xstrata Zinc.
Ka manawa hoʻouna: 11 月-04-2024
