Ke koho ʻana i ke anawaena o ka ʻauwaha hoʻoheheʻe ʻana o ka maina kūloko (2)

1. Ka hoʻoholo ʻana o ke anawaena o ka ʻauwaʻa hoʻokele waiwai

1.1 ʻO ke kumukūʻai kūʻai mai ka ʻauwaʻa mine

I ka piʻi ʻana o ke anawaena o ka mine ventila duct, piʻi pū nā mea i makemake ʻia, no laila ke piʻi aʻe nei ke kumukūʻai kūʻai o ka duct mining vent.Wahi a ka helu helu helu o ke kumukūʻai i hāʻawi ʻia e ka mea hana mine ventilation duct, ʻo ke kumu kūʻai o ka mining ventilation duct a me ke anawaena o ka mining ventilation duct he linear e like me kēia:

C1 = ( a + bd) L(1)

Aia i hea,C1- ke kumu kūʻai o koʻu ʻauwaʻa ea, CNY; a– hoʻonui i ke kumu kūʻai o koʻu ʻauwaʻa hoʻoheheʻe i kēlā me kēia ʻāpana lōʻihi, CNY/m;b- ka helu kumu kūʻai kumu o ka lōʻihi o ka ʻāpana a me kahi anawaena o koʻu auwai hoʻoheheʻe;d– ke anawaena o ka mining ventilation duct, m;L– ʻO ka lōʻihi o ke kūʻai ʻana o ka eli ʻana, m.

1.2 Mining ventilation duct ventila cost

1.2.1 Nānā i nā ʻāpana hoʻoheheʻe kūloko

ʻO ka pale makani o ka mine ventilation duct e komo pū me ka friction wind resistanceR_fvo ka mine ventila duct a me ka pale makani kūlokoR_ev, kahi i kū ai ka makani kūlokoR_evkomo pū me ke kūʻē makani huiR_jo, ke ku'e makani ku'eku'eR_bea me ka mining ventilation duct outlet wind resistanceR_ou(ʻano kaomi-i) a i ʻole ke kū ʻana o ka makani inletR_in(ʻano unuhi).

ʻO ka nui o ka pale makani o ka pahu hoʻoheheʻe ʻana i loko o ka mine:

(2)

ʻO ka nui o ke kūpaʻa makani o ka duct mine exhaust ventilation:

(3)

Ma hea:

Ma hea:

L- ka lōʻihi o ka mine ventila duct, m.

d– ke anawaena o ka mine ventila duct, m.

s– ka ʻāpana kea o ka mine ventila duct, m².

α– Coefficient o ka frictional resistance o ka mine ventila duct, N·s²/m⁴.Ua like like ka oolea o ka paia o loko o ke auwaha metala, pela kaαpili wale ka waiwai i ke anawaena.ʻO nā coefficient kūʻē frictional o nā ducts ventilation flexible a me nā ducts ventilation flexible me nā apo paʻa e pili ana i ke kaomi makani.

ξ_jo– ke koena kūʻokoʻa kūloko o ka mine duct duct joint, dimensionless.Ke loaʻannā hui i ka lōʻihi holoʻokoʻa o ka mine ventilation duct, ʻo ka huina kūʻē kūloko kūloko o nā hui e helu ʻia e like menξ_jo.

 n- ka helu o nā hui o ka mine ventila duct.

ξ_bs– ka helu kūʻē kūloko i ka huli ʻana o ka ʻauwaʻa hoʻoheheʻe mai kaʻu.

ξ_ou– ka helu kū'ē kūloko ma ka puka o ka mine ventila duct, laweξ_ou= 1.

ξ_in- ka helu kūʻē kūloko ma ke komo ʻana o ka duct ventilation mine,ξ_in= 0.1 ke poai loa ka puka komo, aξ_in= 0.5 – 0.6 ke hoopuni ole ka puka komo ma ka huina kupono.

ρ– mānoanoa ea.

Ma ka ho'oku'u 'āina, hiki ke helu 'ia ka nui o ka makani kū'ē o ka mine ventila ma muli o ka nui o ke kū'ē makani.Manaʻo nui ʻia ʻo ka huina o ka pale makani kūloko o ka hui ʻana o ka mine ventilation duct, ke kūpaʻa makani kūloko o ka huli ʻana, a me ke kū ʻana o ka makani o ka puka (press-in type) a i ʻole ke kūpaʻa makani inlet (extraction type) o ka mine ventila duct ma kahi o 20% o ka nui o ka pale makani frictional o ka mine ventilation duct.ʻO ka nui o ka pale makani o ka mine ventila:

(4)

Wahi a ka moʻolelo, hiki ke manaʻo ʻia ka waiwai o ka frictional resistance coefficient α o ka fan duct i mea mau.ʻO kaαhiki ke koho i ka waiwai o ka metala ventilation duct e like me ka Papa 1;ʻO kaαwaiwai o JZK series FRP ventilation duct hiki ke koho e like me ka Papa 2;ʻO ke koena o ka frictional resistance coefficient o ka flexible ventilation duct a me ka flexible ventilation duct me ka skeleton paʻa e pili ana i ka makani makani ma ka paia, ka frictional resistance coefficientαHiki ke koho ʻia ka waiwai o ka duct ventilation maʻalahi e like me ka Papa 3.

Papa 1 Koefficient kū'ē Frictional o ka metala ventilation duct

Papa 2 Koefficient kū'ē paʻa o JZK series FRP centilation duct

Papa 3 Ka heluna o ke ku'e ku'eku'e o ka 'auwa'a ho'oku'u ma'alahi

E hoʻomau ʻia…