Ke koho ʻana i ke anawaena o ka ʻauwaha hoʻoheheʻe ʻana o ka maina kūloko (1)

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I ke kaʻina hana o ke kūkulu ʻana a me ka ʻeli ʻana o nā mines lalo, pono ia e ʻeli i nā luawai a me nā alahele he nui e hana i kahi ʻōnaehana hoʻomohala a hoʻokō i ka mining, ʻoki, a me ka hoʻihoʻi. I ka ʻeli ʻana i nā shafts, i mea e hoʻoheheʻe ai a hoʻokuʻu i ka lepo oka i hana ʻia i ka wā o ka ʻeli ʻana a me ka ea haumia e like me ka uahi pū i hana ʻia ma hope o ka pahū ʻana, e hana i nā kūlana climatic maikaʻi, a e hōʻoia i ka palekana a me ke olakino o nā limahana, pono ka hoʻomau ʻana i ka ea kūloko o ka maka hoʻokele. He mea maʻamau ka hoʻohana ʻana i ka ea kūloko e hoʻomaikaʻi i ka maikaʻi o ka ea o ka maka hana. ʻO ka mea maʻamau, ʻilihune loa ke ʻano o ka ea o ke ala ala hoʻokahi, a ʻaʻole i hoʻoponopono maikaʻi ʻia ka pilikia ea. E like me ka haole holomua mine hoao ana, o ke ki ina paha i ka pono anawaena ventilation duct i hoʻohana 'ia i loko o ka kūloko ventilation, a me ke ki i ka pono anawaena ventilation duct hiki ke hoʻohana 'ia ma muli o ke kea-sectional nui o ka hookahi-poʻo alanui. Ma kēia pepa, loaʻa ke ʻano helu helu no ke anawaena o ka ʻauwai hoʻokele waiwai ma o ka noiʻi ʻana. No ka laʻana, he nui nā maka hana o Fankou lead-zinc mine e hoʻohana ana i nā mīkini diesel nui a me nā lako, a he nui ka ʻāpana keʻa o ke alanui.

Wahi a nā puke e pili ana i koʻu hoʻokuʻu ʻana, ʻo nā loina maʻamau no ke koho ʻana i ke anawaena o nā ducts ventilation mine kūloko: Aia ka mamao o ka ea i loko o 200m a ʻaʻole ʻoi aku ka nui o ka ea ma mua o 2-3m.³/ s, ʻo ke anawaena o ka mine ventilation duct he 300-400mm; Ke 200-500m ka mamao o ka hāʻawi ʻana i ka ea, ʻo ke anawaena o ka mine ventilation duct i hoʻohana ʻia he 400-500mm; Ke 500-1000m ka mamao o ka hāʻawi ʻana i ka ea, ʻoi aku ka nui o ke anawaena o ka mine ventilation 60mm. 1000m, he 600-800mm ka anawaena o ka mine ventilation duct. Eia kekahi, ʻo ka hapa nui o nā mea hana o mine ventilation ducts e kuhikuhi i kā lākou huahana i kēia pae. No laila, ʻo ke anawaena o ka mining ventilation ducting i hoʻohana ʻia i nā mines metala a me nā mea ʻole i lalo o ka honua ma Kina i loko o ka laulā o 300-600mm no ka manawa lōʻihi. Eia nō naʻe, ma nā mines haole, ma muli o ka hoʻohana ʻana i nā mea hana nui, ʻo ka ʻāpana cross-sectional o ke alanui he nui, a ʻoi aku ka nui o ke anawaena o nā ducts ventilation mining kūloko, ʻo kekahi a hiki i 1500 mm, a ʻo ke anawaena o ka lālā mine ventilation ducts maʻamau ma mua o 600 mm.

I loko o kēia pepa, ua aʻo ʻia ke ʻano helu helu o ke anawaena o ka mine mine ventila duct ma lalo o nā kūlana haʻahaʻa haʻahaʻa o ke kumukūʻai kūʻai o nā ducts mining ventilation, ka hoʻohana ʻana i ka uila o ka ventila kūloko ma o ka duct mining vent, a me ka hoʻonohonoho ʻana i kēlā me kēia lā a mālama i nā ducts mining vents. Hiki i ka ventila kūloko me ke anawaena o ke auwaha hookuonoono waiwai ke loaa ka hopena o ka ea.

E hoʻomau ʻia…