Thong tin khoa hpc cong nghe m6 w CAC GIAI PHAP KY THUAT DAP UNG SAN LlfDNG, NANG CAO HIEU QUA VA Mlh; DO AN T O A N CAC M 6 Ld THIEN LdN KHI XUONG SAU In recent years, coal mining output in Vinacomin[.]
Thong tin khoa hpc cong nghe m w CAC GIAI PHAP KY THUAT DAP UNG SAN LlfDNG, NANG CAO HIEU QUA VA Mlh; DO AN T O A N CAC M Ld THIEN LdN KHI XUONG SAU In recent years, coal mining output in Vinacomin has ThS BO NGOC TU'd'C rapidly increased According to the development plan, the ThS DLraNG TRUNG JAM annual coal output in 2015 will teach to 60 + 65 million tons, in 2020 will be 70 + 75 miilion tons and in 2025 will be more KS NGUY6N VAN BdC than 80 million tons In which, the underground coal output will Viin Khoa hoc COng nghi Md-Vinacomin gradually increase and accounting for 55 + 70%, white the open pit coal output wilt decrease and accounting for 30% + 45% Besides the increase of the coal output the increase of the labor safety and production efficiency is the essential task in the sustainabie development of the coat sector in Vietnam Nhung nim qua, s i n Igpng khai thic cua T i p doan Cdng nghipp Than - Khoing s i n Vidt Nam ting trudng vdi t i c dp nhanh, td 27,5 tridg t i n nim 2004 len tdi 44,01 tridg t i n nam 2010 (tuong dng tang 1,6 iln) Theo k l hoaeh phit triin, d i n nam 2015, s i n lupng than dpt 60+65 tridu t i n , nam 2020 dpt 70+75 tripu t i n , nim 2025 dat trdn 80 tripu t i n Trong dd, san lupng than khai thic ham Id tang dan v i chiem khoing 56+70%, san lupng than Id thien se giim dan va dpt td 30+45% Ngoii tang s i n lupng khai thic, vipe ning eao an t o i n lao dpng, hipu q g i s i n xgIt, giam ton thit t i i nguydn cung l i mgc tieu d p thllt trang Ip trinh phit triin b i n vung cua nganh Than Do vay, vipe nghidn cdu c i c giai phap dap dng s i n lupng, nang cao hipg qua va mdc dd an toin eie md Ip thidn Idn xuing sau l i rit c i n thiet D$c aim cac md than /$ thien Vift Nam xuong siu a Bac diim diiu kidn tw nhidn, dja chit cdng trinh, dia chat thOy vin Khoing sing than Vipt Nam ndi ehung d i g od d i e dilm phin b i "trdn sudn nui - dudi moong sig" v i dgpc phin Iopi thinh c i c dpng nhu sag: c i c via thoai cd gdc elm p < 20°; c i c via than dpng Scm t i v i d i e nghidng (20+40°); eic via than dpng ddng tg hoin chinh (clu tao ldng Ohio); c i c via than dpng ddng tg khdng hoan chinh (nip l i i , n i p Idm) C i c md than ip thien Idn Cao Son, Cpc Sig, Ddo Nai, T i y Nam B i M i i od dilg kidn dja chit thgdc Iopi phdc tap Nham thpch cie md gdm chO y l g eat kit, bpt kit, egdi, spn kit cd hp s i kidn c l Idn f = 4+14, Dung trpng thay d i i td 1,63+1,97g/em' Trpng lupng thl tich thay dii td 2,5+2,75g/cm' Cie md dlu.cd lug lupng nude ngim va nude mpt Idn, thdi gian mua trung binh thang/nam Dja chit kiln tpo eua eic md phdc tap, gdm nhiiu phay phi, ddt giy Hp thing nude mpt chi t i n tpi md d nhdng trpn mua v i dupe tieu thoit tg nhidn theo muong ranh ehay cic sdng sudi gin khu vgc md Nude ngim nam tang phu Dp td (Q), ting chda than (T3n-r) v i eie ddi ddt gay Ting chda nude ngim tram tich (T3n-r) ed mgc nu(K dao dpng theo mda, v i o mua mua mgc nude cao hon mua khd td 2+4m b Bic dlim diiu kidn hinh hi/c cOa cic md Bpc dilm v l dilg kidn hinh hoc cCia eie md than Ip thidn l i c i c md d i u khai thie xuing siu, bidn gidi tren mit dupe md rdng Cic md chia thinh nhiiu khu vgc khai thie, c i c md Id thidn nhu: Cao Son, Coo Siu, Bdo Nai cd kich thude khai trudng Idn d i m bao c i c thdng s l d l i p dgng c i c edng nghd khai thic tidn tlln vdi ding bp thllt bj (BBTB) hidn dpi D i e dilm hinh hpe cda md Id thien l i mpt nhdng y i u td cd lidn qgan chit che vdi cudng dd phit triin edng trinh md Theo cIg tpo dja chit v i dja hinh, hIg hit cie md Id thidn Idn vDng Qging Ninh d i g ed dpng "trdn sudn niJi KHCNM Sd 1/2013 * CNKT U> THlIlN W' Thdng tin khoa hpc cdng ngh$ m6 dudi moong sig", khai thic dudi mdo thoit tidn inh hgdng din vide Iga chpn cdng i nude tg chiy, hd s i bde thdi gian sd Idn, cd noi khai thic, trinh tg khai thic, hd thing khai tdi 7+14 m'/tln Chilu dii tuyin cdng tio trung M i nhdng yiu t i niy cd inh hudng t^ri blnh theo chilu siu eua cdc md Id thidn thay dii din sin lupng khai thie eda md [11 Khii lupng cCia md Id thidn bao gim Idn nhu: Bdo Nai td 200+1200m, Cpc Siu td 300+1200 m S i ting edng tie hopt ddng ding lupng than At v i khii dit d i Ad Sin lu thdi se ting Ting hpp die diim kich thude hinh ehung eho than v i dit d i gpi l i sin lupng khii lupng md (Am) Sin lupng md Id thidi hpc cic md dgpc thl hidn bing khal thic xuing siu theo dllu kidn k^ ti c Phuang hirdng khai thic cOa cic md Theo Ting »» dd Phit trtin nginh glal dopn dgpc xic dinh theo bilu thdc sau: 2006+2015 cd xdt triin vong din 2025 d i dupe A, - V, s, •/ IzJ^ , tin/nim (1) phd duydt v i cic Dp i n dig tu md rdng ning I-r cdng suit cua cic md Cao Son, Cpc Sig, Bdo Trong dd: Nai Tiy Nam O i Mdi, nhu clu v l lidu thg than Si- tilt didn ngang cua than trdn cic ting Irong nuPc v i xuit khiu rit Idn Din nim 201S toin, m'; sin lupng md Id ihidn vin chilm khoing 50%, r- khii lupng Ihl tich cua than, t/m"; sau dd cAc md than Id thidn vung Hdn Gai sd kit thuc khai thdc chuyin sang khai thic him Id Km v i r- h | s i lin Ihit v i lim bin than,» dd sin lup'ng than khai Ihdc Id thidn sd giim Khii lupng dit bdc cua md Id thidn phg Ihi xi/dng dudi 50% vio h | s l bdc dit d i sin xuit ciJa md: Theo dvr bAo Irdn mi sin lup«g khal thic Aa = KIAq, m'/nim (2) man 10 thidn hing nim Irung blnh phii dpt td Td dd, la c6 sin li/png Ilnh theo khii lire 10.5 24 tn»u tin khii lirpmg dit bdc td mdii 105-240 tn»u m> Vdi diiu kidn khai thic khd Am=Aq(; r Kl), m'/nim (3) kh4n nhir h4n c4c md Id thidn ngiy cing • -3 ttiAc xuing siu diiu kidn dia chil phdc lap til nguydn din can k4( ddi hdi c6 chiln l i w : sd dung v i tin dung tilt kidm nguin tii nguyin nAy Vdi: Kl- hd s i bdc thdi gian, m'A Tic dd xuing siu dirpc xic djnh theo bi Ihdc: e t c , - id anh hi/dng din sin lupng md 14 I M n • '•' khai thic xuing siu Vj = ^ — m/nim (4) 'c Trong d i : S i n tirong cua mdt m i 10 thidn dupe qgylt X- hd s i phin mua: A.= (12-Tn)/12, vdlT.I ^inh b ^ nhilu yAu l i I I » / phii hop gida yiu t i ]\j nhidnky thuit dilu kiOn kmh t l Trong dd thdi gian diy md lly ldi nim khdng da die ^im cua cic yiu t i nhiOn l i yiu t i diu siu dupe, thing; Ihiin siu i Bittg Bic ^im itich thude hinh hoc mdt sd amd TT jOon v/l Cao San Bio Hal ChlMu m -325 Wchido Hu kdl muc m 450 _2JCriilu cao t)d md *J m , 400 3I Khai ih*c dudn miie Ihoil nude Iv ch Khdi liAmg than diKM mde chiy IChllu dtt tuvin cdna Uc: Ldn nhit Nhd nhit s | S i t i n g khailh«c 10T 82,8 (76,5%) Tiy mm DiUil -200 450'^ 400 I P 82,r' (76,5%) CocSiu -345 450 200 7,12 (33,34%) -330 510 285 38,63 (85%) 1200 200 20*29 1000 300 37 -J m f1 rTina ^ KHCNM S d I/20I3 • CNKT LO THitN 2500 800 32 1 1 I 800 28 m Thong tin khoa hgc cong nghe m o h- Chilu cao ting, m; Tc-Thdi gian chu ky chuin b| ting mdi, nam B i i vdi m i i khoing sing nhit djnh thl g i i trj f^,j\ va r nhin chung khdng thay d i i nhilu vdi mdi cdng nghd khai thic B i i vdi q u i trinh thllt ke san lupng md cho mdt giai dopn nio dd ndn lly kha nang s i n lupng VsK.Sq nhd nhit d l dam bao cho md dpt dupe san lupng ludn i n djnh Irong thdi gian khai thic S i n lupng eua md Id thidn chju anh hudng bdi c i c y l g t i nhu sau: a Anh huang cua cic yiu to tw nhidn Cic y i u t i tg nhien anh hudng d i n k h i ning sin lupng cda md Ip thien bao g i m : s i n trang cua via (ehilu diy, gdc die, s i ldp d i kpp), d i e dilm dia chit, dja chit edng trinh, dja chit thuy van, dllu kipn dja hinh, ehilu d i y ting d i t phu v i diiu kidn hiu khu md Khi chilu diy via than Idn v i chilu day t i n g d i t phu khdng Idn lam thi kha nang tang san lupng cua cic md dd thge hien v i ngupc Ipi b Anh huang cua cic yiu td ky thuat Cae yeu to ky thupt anh hudng d i n s i n lupng md bao gom: - Cae thdng s i hinh hpc md cd lidn quan chat che vdi cirdng dp tien trien cdng trinh md - Anh hudng ciJa he thing khai thie den san lupng md bidu hidu rd net nhit thdng qua vide ap dgng edng nghp khIg - Anh hudng eiJa cdng nghp van tai den san lupng md: hien tpi cung nhu eic n i m tdi, van til d i t da va thai d eac md Id thidn xuing sau cua Tip doin se gap nhieu khd khan Cung dp van t i i ciJa c i c md se tang tdi 4+7,0km, chieu cao ning tai td 350+500m Khii lupng dit bde td 6+70 tripu m'/nam, than td 0,5+4,5 tripg tan/nam Vdi thgc trang tren diy, mpt s i md nig vin ap dgng van tai d td don thuin thi chi phi van tai tang dang ke, d i n d i n giam hipg qua khai thic va han ehe kha nang md rpng qgy md khai thae cda eac md K i t qga nghien cdu cho ihly, d l hoan san lupng mdt mo nhit * n h ;hi c i c loai hinh v i n tai khie nhag ed ting mde lag tg khac nhag, g i i thinh vpn tai mpt m' d i t I i cung khac - Anh hudng cua ding bp thiit bj (BBTB) den ian lupng md: BBTB khdng chi anh hgdng giin ilp d i n tdi c i c thdng s i eua hp thing md via, w cdng nghd khai thie, eic chi tieu kinh td-kj thupt cua md, v.v m i cdn i n h hudng trge tllp tdi ning sg|t ciJa cie thllt bj tham gia s i n xuit cung nhu cOa e i diy chuyin s i n xuit trdn md B i c bidt i n h hudng trgc tiip d i n s i n lupng md, giy i n h hgdng d i n k l hopch s i n xuit eua doanh nghiep md v i quy hopch eua Nhi nude Mpt md Id thidn dupe eoi l i hoat dpng cd hipu q u i v l m i l ky thudt ehi cd sg t i i ug v l kich thgdc, edng sgIt v i sg phii hpp ega eic thllt bj sd dgng ding bp c Anh huang cua cic yiu id kinh ti din san lirang md Khi x i c djnh s i n lupng md Id thidn c i n phai qgan tam d i n cic y i u t i kinh t l nhim ning cao hipg qua s i n xuit v i dpt dupe Ipi nhupn eao nhit q u i trinh t i n tpi cua md San lupng t i i da cd the cua md Id thien dupe xac djnh trdn co sd eic ydu t i ky thupt khdng phii bao gid cung l i s i n lupng hpp ly v i mang lai hidu qua kinh te eao eho md [1] Cic giii phip khal thic chu yiu Vdi dpc diem, dieu kien khai thac d cac md Id thidn Idn vung Cim Phi, d l hoin san luong Idn nhu theo quy hoach, d l xuit cie giii phip nham dap dng san lupng, nang eao hipg qua va mdc dd an loan cac md than ip thien cdng suit Idn khai thic xuing siu: * Bien gidi khai trirang: Hidn nay, c i c md than Id thidn Idn Vipt Nam da va dang d i n tipm cpn d i n ranh gidi khai thac culi cCing theo thllt k l ca tren mat lan dudi sau Cac md vCing C i m Phi hipn dang tien hanh md rpng bidn gidi tren mat, dudi sau nham khai thae t i i da tru lupng than bing phucng phip khai thic ip thidn Be d i m bao eho edng t i c md rpng va xuing siu, c i c md ein ed nhdng giai phip eg the nhu: v i n d l i n dinh bd md, thoit nude v i thdng gid md Cac chi tieu bidn gidi khai tnrdng eic md Id thien vdng Cim Phi t h l hipn bang * Vi trinh t{rkbai thic: Tang s i n lupng md Cpc S i u ldn tripu t i n than nguydn khai/nim v i kit thiic khai thie nam 2028, md Cao Son gid nguyen san lupng tripu t i n than nggyen khai/nim va kit thCic khai thac nam 2038, md Bdo Nai giai doan md hoat ddng se giam san Igpng xuing 1,5 tripu tin KHCNM S 1/2013 * CNKT Lp THIEN Thong tin khoa hpc cdng ngh$ m6 W' dudi moong siu", khai thic dudi mdc thoit nude tg chiy, hd s i bdc thdi gian se Idn, ed noi tdi 7+14 m'/tln Chilg d i i tgyin cdng t i c trgng blnh theo chilu s i u ciJa c i e md Id thidn thay d i i Idn nhu: Bdo Nai td 200+1200m, Cpc S i u td 300+1200 m s i ting cdng t i c hoat ddng ding thdi se ting Ting hpp die dilm kich thude hinh hpc cie md dupe t h l hidn bing c Phuang hudng khai thic cua cic md Theo Ting so d i Phit triin nginh glal dopn 2006+2015 cd xdt triin vong d i n 2025 d i dupe phd duydt v i eic Dg i n d i g tu md ring ning cdng sgIt ega eic md Cao Son, Cpc Siu, Ddo Nai, Tiy Nam D i Mii, nhu c l u v l tidu thg than nude v i xuit khiu rit Idn D i n nim 2015 sin lupng md Id thidn v i n chilm khoang 50%, sag dd cie md than Id thidn vdng Hdn Gai sd kit thuc khai thie chgyin sang khai thic him Id dd s i n lupng than khai thic Id thidn sd glim xudng dudi 50% tidn i n h hudng d i n vipe Ipa chpn edng nghd khai thie, trinh tg khai thic, hd thing khai thic, M i nhdng y l g t i n i y cd i n h hudng trgctidp d i n s i n lupng khai thie cOa m i (1] Khii lupng cua md Id thidn bao g i m s i n Igpng than At v i khii d i t d i Ad S i n lupng Chung cho than v i d i t d i gpi l i s i n Igpng theo khii lupng md (Am) S i n lupng md Id thidn khai thic xuing s i u theo dllu kidn kf thuit dupe x i c djnh theo bilu thdc sag: A v :,.T.'"'^ , t i n / n i m (1) Trong dd: Sr tilt diln ngang ciJa than trdn c i e ting tinh toin, m^; y- khii lupng t h l tich cua than, t/m'; Km v i r- hd s i t i n thit v i l i m b i n than, % Khii lupng d i t bdc cua md Id thidn phg thude v i o hd s i bdc d i t d i s i n xuit cua md: Aa = Kt.Aq, m'/nim (2) Td dd, ta cd san Igpng tinh theo khii lupng md li: Am = Aq( — + Ki), m'/nim (3) r Theo dg bio trdn thl san lupng khai thic than Ip thien hang nam trung blnh phii dat td 10,5+24,6 tridu t i n , khii Igpng d i t b i c td 105+240 tripu m' Vdi dllu kidn khai thic khd khin nhu hipn nay, eac mo Id thien ngiy cing khai thac xuing siu, dllu kipn dja chit phdc tap, Vdi: Kt- hp s i bdc thdi gian, m'/t t i i nguydn d i n cpn kipt, ddi hdi cd chien lupe su T i c dd xuing s i u dupe x i c djnh theo bilu dgng v i tan dgng tiet kipm nggdn t i i nguyen thdc: niy Vs=A.—, m/nim (4) Cac y i u t i i n h hudng d i n s i n Igpng md Ip thien khai thic xuing sau Trong dd: S i n lupng cua mdt md Id thien dupe quyit > - hd s i phin mCia k - (12-Tn)/12, vdi Tn la dinh bdi nhilu y i u t i , la sg phg hpp gida y i u t i tg nhien-ky thgit, dieu kidn kinh t l Trong dd, thdi gian d i y md l l y ldi n i m khdng dio dpc diem cda eac y i u t i tg nhidn la y l g td d i g s i u dupe, thing; Bing Bic diim kich thude hinh hoc mit sd md li thiin siu Tiy Nam Do-n v; Cao Son Bdo Nai Chi tiiu Cpc S i u TT BiMil -200 m -326 -345 -330 Chilu sdu kit thuc m 450 460 460 510 ? Chieu cao bd md 400 400 200 285 Khai thdc dirdl mdc thoit nude chav m 82,8 82,8 7,12 38,63 10'T Khoi lu-png than du-dl mdc chiy (76,6%) (76.5%) (33,34%) (85%) Chieu ddi tuvdn cdng tdc: Ldn nhat m 1000 2600 2500 1200 Nhd nhit 300 m 800 200 800 37 i Ting 20*29 So ting khai thdc 32 28 KHCNM S 1/2013 " CNKT LO THI^N Thong tin khoa hpc cong nghe md h- Chilu cao ting, m; Tc-Thdi gian chu k^ chuin bj ting mdi, nim B i i vdi m i i khoing sing nhit djnh thl g i i tr| Yq, n v i r nhin chung khdng thay d i i nhilu vdi mdi cdng nghp khai thic D i i vdi q u i trinh thllt k l sin Igpng md eho mdt giai dopn nio dd ndn lay kha ning s i n lupng VsK.Sq nhd nhit d l d i m bao cho md dpt dgpc s i n lupng ludn i n djnh thdi gian khai thic San lupng eua md Id thien chiu anh hudng bdi eie y i u t i nhu sau: ' a Anh huang ctia c i c yiu td tu nhiin Cic yiu t i tg nhien anh hudng d i n kha ning san lupng eua md Ip thidn bao g i m : san trpng cda via (ehilu diy, gdc die, s i Idp d i kpp), die dilm dja chit, dja chit cdng trinh, dja chit thuy vin, dllu kipn dja hinh, chilu d i y ting d i t phu v i dllu kidn hiu khu md Khi chilu diy via than Idn v i chilu day ting d i t phu khdng ldn lam thl ning ting s i n lupng cua c i c md dd thpc hipn v i ngupe Ipi b Anh huang cOa cic yiu td ky thuat Cic yiu t i ky thupt anh hudng d i n san lupng md bao gim: - Cic thdng s i hinh hpc md cd lidn quan chpt che vdi cudng dp tlln Iriln edng trinh md -Anh hudng eua hp thing khai thic d i n san lupng md bilu hipu rd net nhit thdng qua vide ap dung cdng nghp khiu - Anh hudng eua edng nghe van tai d i n s i n Igpng md: hipn tpi cung nhu cac nam tdi, van tai dat d i va d i thii d cie md Id thien xuong sag cua Tip doin se gap nhilg khd khin Cung dp van til cua cic md se ting tdi 4+7,0km, chilu cao ning tai td 350+500m Khii lupng d i t bdc td 6+70 tridg m'/nim, than td 0,5+4,5 tridu tan/nam Vdi thuc trang trdn day, mdt s i md niu van ap dung van t i i d td don thuin thl ehi phi van tai tang dang k l , d i n d i n giam hidu qua khai thac v i han ehi k h i ning md ring qgy md khai thic cda cic md Kit q u i nghidn cdu cho thiy, d l hoin thinh san lupng mdt md nhit djnh thi cac loai hinh van tai khic cd ting mdc dau tu khic nhau, gia thinh vpn tai mpt m' d i t di cQng khac - Anh hudng eua ding bp thllt bj (DBTB) d i n san lupng md: DBTB khdng chi i n i i hudng giin tiep din tdi cic thdng s i cua hp thing md via w edng nghd khai thic, c i c chi tidu kinh t l - k j thupt eua md, v.v m i cdn inh hudng true tllp tdi ning suit ega c i e thllt bj tham gia san xuit eOng nhu cDa c i diy chuyin s i n xuit trdn md D i e bilt inh hudng trgc tllp din s i n lupng md, giy i n h hudng d i n k l hopch s i n xuit cOa doanh nghidp md v i quy hopch cua Nhi nude Mdt md Id thien dupe col l i hoat ddng cd hipu q u i v l mit kJ thuit chi cd sg t i i gg v l kich thude, cdng sgIt v i sg phii hpp cua cac thiet bj su dgng ddng bd c Anh hudmg cOa cic yiu td kinh ti din san luang md Khi xac dinh s i n lupng md Id thien ein phii quan t i m d i n cie y i u t i kinh t l nhim nang cao hidu q u i san xuit v i dpi duac Ipi nhupn eao nhit q u i trinh t i n tai cua md San lupng t i i da cd t h l cua md Id thidn dupe xac dinh trdn co sd c i c y i u t i ky thuit khdng phai bao gid eung l i s i n lupng hpp ly v i mang lpi hipg qua kinh t l eao eho md [1] Cac giai phap khal thac chu yiu Vdi d i e dilm, diiu kidn khai thic d cie md Id thien Idn vCing Cim Phi, d l hoan thinh sin lupng Idn nhu theo qgy hopch, de xgIt cac giai phap nham d i p dng s i n lupng, ning cao hidg qga v i mdc dd an toin c i c md than Id thien cdng sgIt Idn khai thic xging siu: * Biin gidi khai trtrxmg: Hien nay, eic md than Id thidn Idn Vipt Nam da v i dang d i n tipm can d i n ranh gidi khai thac cuii cCing theo thiit k l c i tren mat lan dudi sag Cic md vdng Cim Pha hipn dang tlln hinh md ring bidn gidi trdn mpt, dudi sag nham khai thic t i i da tru lupng than bang phuong phip khai thic Id thien D l dam bao cho cdng tie md rdng v i xuing sau, eac md c i n cd nhdng giii phip eg t h l nhu: v i n d l i n djnh bd md, thoit ngdc v i thdng gid md C i c chi tieg bidn gidi khal trudng eie md Id thidn vung Cim Phi t h l hipn bing *Ve trinh ttf khal thic: Ting san lupng md Cpc S i u len tripu t i n than nguyen khai/nim v i kit thuc khai thie nam 2028, md Cao Son giu nguydn sin lupng trieu t i n than nguyen khai/nim v i kit thdc khai thie nam 2038, md Ddo Nai giai dopn md hoat ddng sd giim san lupng xuing 1,5 tripu tin KHCNM s d 1/2013 • CNKT IX) THIEN âã Thong tin khoa hpc c6ng nghp m6 Bing Cic chi tiiu biin gidi khal trudng cic md id thiin vdng Cim M6 Bio n Tin chi tiiu Nai Bofi vl Toin bd Khu via Khu Chlnh Lt>Tri Phi Md Cpc S i u Khu Nam LOTd Toin bd Khu Tiy Nam BicTi Quing NganS, Lai Bic phayB Khu Bdng Nam Md Cao Scm Tiy Nam OiMii Kich thude khai tru'dng m Chilu ddi trung blnh m 500 000 3450 3000 Chilu rdng trung blnh m 2.600 2.500 2120 1800 S6 t i n g khai thdc Ting 48 25 28 40 50 35 C h i l u cao b d md m 720 375 420 605 760 370 -346 +15 -150 -330 C i t cao ddy md m -345 •330 -180 -30 -325 -220 398 10 675 47.886 38.212 8.456 1.218 94.426 Trd lu'png cdng nghidp ' T 52 894 40 713 438 11 743 52 675 42.033 S.302 1.340 112 367 39.744 Khdi lu'png d i t dd bdc ' m ' 586.1 429,6 2,14 154,4 699.5 495.6 73,7 4,72 1-138.1 667.6 Hd s6 bdc trung blnh 10,55 4,89 13,15 13,28 14.90 7.92 3,52 10.13 16.80 Trd lupng dja c h i t ' T 48 085 37 012 m'/T 11,08 than nguyen khai/nim v i kit thue mupn nhit vao nam 2047 * Hp thdng khal thic vi dc thdng sd: HTKT xuing siu, dpc, mpt (hai) bd edng tic, cd van t i l , dat d i d i bai thai ngoii v i bai thai vdi vipe i p dgng cdng nghp khai thic vdi gdc die bd cdng t i c Idn, tgy tdng khg vpc eg the od the i p dgng HTKT khiu theo Idp ddng v i d l bd ddng tpm thdi D i o s i u d i y md v i khai thic than bang MXTLGN, theo cdng nghd dio sau kit hpp tdc la chuin bj ting mdi v i khai thic than theo phin ting, cdn vipe bdc d i t d i dupe tlln hanh trdn toin bp chilu cao ting * BBTB dupe Iga chpn phCi hpp vdi quy md cdng suit cua tung md nhu sau: - Thiit bi lam tai; Sd dgng miy khoan xoay cIg chay dipn tren c i c ting khdng ed nggy eo ngip nude, miy khoan thgy Igo d cie ting dudi mdc thoat nude tu chay Budng kinh lo khoan lua chpn phii hpp vdi thdng s i HTKT v i DBTB: dk=200+300mm - Cong nghd ni min; S d dgng phuong phip n i vi sai phi dipn, co gidi hda khiu npp thulc n i vdi thllt bi chuyen dgng Sd dgng k i t hpp thgic n i chiu nude v i thuic n i chju nude c i c Id khoan nhieu nude, su dgng thgle n i thudng tgi nylon d i i hoic tdj nylon ddng gdi W KHCNM S 1/2013* CNKT LOTHltN 34,172 sin, eie l i khoan it ngip nude - Thiit bi xOc bdc; S d dgng m i y xue giu thuin chay dipn vdi dung tich g i u E = 4,5+15m' xiic d i t d i c i c t i n g It nguy co' ngip nude v i cd nguin didn i n djnh Dung MXTLGN dung tich E=3,5*12m' d l d i o s i u d i y md v i khal thic than hoic xuc d i t c i c khu vgc khd khin, chit hpp, khd khin v l nguin dipn - Thiit bi vin tii; Lifa chpn phu hpp vdl quy md edng suit, thiit bj khoan, xuc, cung dd vin tai va d i e dilm ciJa tdng md nhu sau: Md Cpc, Ddo Nai Iga chpn cdng nghd v i n l i i lidn hpp dtd - bing t i i vdi xe khgng ddng cd t i i trpng q = 37+55 t i n d l v i n t i i than, v i n tai d i t da bing dtd t i i trpng q = 90*120 t i n Md Cao Son Iga chpn cdng nghd v i n t i i liln hpp dtd-bing tii vdi xe cd t i i tn?ng q = 37*55 t i n d i v i n t i i than, dtd t i l q = 90+140 t i n k i t hpp vdi trpm nghiin v i bing tai ed chilu ring bing B = 2.200mm, ning suit 2.000t/h d l v i n tai dit di - Cdng nghd vi thiit bi thii di It/a chgn theo hinh thuic v$n tii; k i t hpp dtd v i miy gpt, vdl hinh thdc vin t i l d td thgln tgy, m i y dai da v i n lai bing bing tai * C i c giii phip ning cao miic