322page

316 ^1t49 tLH +3 al. €LH ,J -ila -E7l ^ls H +a EJ zI zlEE vJ fli =s., +olg, +rI E Fql I6Iq € zlaJ4. 2. il|B B^l tL -Ij-91 ol * = .1. d i:-l oTr (1) .J* *g O Egd+ : FHd+, +'Jqd+, lBEd+, gEd d+ Eol 914. +Eg 100^1 7J 4E, s€-e- 15-20[lm/W)o]tr]. @ €"JE : i34 ols=E EELzIa= +'J+ old*o]4. +Eg 7,500-10,000 ^le e E, sgg 6o-eo[lm /w)o]r+. @ arlE *dE : fg5, EIg B4olE, t"J +tr+ Fel +aolq. s.gg = a, iE o E 154 olq, tsl "Jel zl q 7I Hlr4 *olaI4. xl.-;t olAH .l !l-9lol AHe 0l+61 ^ ol= =e{ E! L-ro or=-l --r= u== I ,\ L o-1 Eg= ) Dil=J gr.alolE ) -d"J= ) +== ) LIEE= (2) zls*g O zl^I'J : E+g B4{ "J "ll EI .Jql^-l 4d EB6i= q @ a+* : "JrI9 zlEzl 0.3[ca1 . cm'. min-']olt'J qlel zl^]"] @ +"J : zlrl*+a+'J Ll. tsq 4r.Ezl ^14 EJe (1) tsg +* O gtf,+ : q F+.1^] zlEzl EolzlE 4*=. *$Ed "l ^J C q = rtrj .14. @ Ef,+ : $rolzl,'.1 ,JE7l *olzl= A*E *$Edol xrl Ag= 4{ol4. @ v1=Jol grlHQ B,IAI !-q aflzl AeZ) y44L+. @ +^J4= EL* *ql^'l ^qg +E6lr t^J4= q++ *ql^'l H"Jg +E6I= 7l;g +4. (2) E ^IE Z7J O Brl : r,lu]]r.jol E_7) flt * HolE 4 @ E rl9 Z4 : zzl, Elzl, qlul , ^)7+ @ .JqI4 o E rl4ol = ^l'l]^J"Jfg Uz1 d4. (q : 3-4mmE 9-lzl +l6.J 44= q+ 250-300mmol4 : E^l'Zlel)
322page

2. 채광 방식
322page

2. 채광 방식
322page

2. 채광 방식