^^_ KHOA HOC VA CtfNG NGHE MO JDANH GIA HIEN TRANG VA GIAI PHAP TANG ClTOTNG THONG GIO MO KHI KHDI THflC XUONG SflU MOT SO MO THAN HAM LO CAM PHA PGS.TS D A N G V O CHl ^ Tripdmg Bgi hgc Md-Dja chit r dc md khai thdc than ham Id nudc ta dang d giai dogn chuyin dign san xuit xudng edc ^ " ^ mue sdu han; ddng thdi tang sd mdt Id ehuin bj eIn ddo vd san lupng khai thdc hdng nam Hd thdng dudng Id cung nhu mang gid d hdu hit edc md tuong ddi phuc tgp Cdc md chu yeu dp dyng phuong phdp thdng gid hOt vd sij dyng nhilu trgm quat Mgng gid thudng xuyen thay ddi ehuyin dign san xudt va thay ddi san lug'ng cung nhu dd xudt metan d cdc khu khai thdc Bdi vilt thyc hign danh gid tinh hinh thdng gid vd xdy dyng CO sd djnh hudng lya chpn thiet bj thdng gid ddp ung yeu clu san xuit cdc ndm tdi eho mOt so md than him Id chu y i u vCing Cim Pha Dgc dilm chung v l hg thdng thong gid it mgt sd mo than hdm Id vung Cim Pha Cdn cu vdo Quyit (^nh sd 938/QD-BCT, thJo muc nguy hilm v l nd cdc md dup'c xip h g n ^ gdm: mue -140-5-+54 khu Lo TrI, md Thdng Nhit p mue -100+-300 khu Khe Chdm III vd td 10 via den mue -97,5 d Cdng ty than Mdng Duong; mo hgng II: mue -250 d Cdng ty than Mdng Duong vd mfi hgng 111: md Khe Chdm I, mue -225-i-+100, Bdng Sd ligu ve thdng gid chung d cdc md Ma higu qugt Khe Chdm 2K56- No.24 BD-II-6-N16 IVlflng Duang VOKD -2,4 Thing Nhit BD-1I-6-N0.17 2K56- No,24 Tiedg Ydudu Ydudu v/ph fto, Hw Chi dfl cflng tdc eOa qugt H, 306 45 0,85 52 0,7 +5 750 980 171 37 301 52 Q 131 59 740 106,67 156,58 122,7 246,9 35 980 1000 31,5 94,5 42 98 245,2 269 -5 30 ;• 138 • 250 0.68 Luu lirgng Qm,m'/s RflgifltiSml quatQ,rf/sl 113 53 18 6,8 110 23,5 42 98 i J 1 I Bdng Lwu liegng gid vd hdm lu^ng md d Id chqt TT Cdc lo chg LC-200/-160 via 13.2.6-1 LC-100/-55 via 14.5-4 LC-150/-120 via 12.1-1 LC-160/-130 via 13.1-3 LC-160/-130via13.1a-6 LC-225/-160via13.1a-5 H.Lugng khi, % CH4 CO2 0,05 0,1s 0,00 0,2 0,3 0.1 0,4 0,12" 0,2 0,1 0,16 0,1 Mo than Khe Chdm thflng gifl bgi hai trgm quat hut: 2K56-N0.24 vd BD-ll-5-No.16; mfl Mflng CtfNG NGHIEP MO $tf - L.Lugng gifl, m^/s Tinh todn Thgc te 6.3 7.44 5.5 6.3 7.0 6.8 5.4 6,8 6.5 6.3 18 7.92 Nhdn xdt » ThCra 18,1 % Thilu 12,7 % Thira 2,9 % Thilu 20,6 % Tha'a3,2 % Thidu 56 % i ' Duong dp dgng phuang phdp thflng gifl diy Trunl tdm vdi trgm qugt VOKD-2,4 Khu Lfl Tri mo Thing _^^ KHOA HOC VA C6NG NGHE MO khdng eao han mue cho phdp theo Quy phgm Tdng luu lu(?ng gid yeu clu toan md la 158,35 m'/s Cae qugt gid tgo luu lupng 190 m^/s va lug'ng gid rd d cac h^gm qugt Id 24,8 m^/s Nhu vgy, Danh gia tinh hinh thdng gid d eae mo ndng lye cua cae \xam qugt ed the ddp ung ydu cdu thdng gid md; nhung h-en thyc te ed Id chg- thua gid 2.1 Cong ty than Khe Cham vd ed Id ehp' luu lupng gid khong ddp ung ydu cdu Chit lug'ng thdng gid ede Id ehgr: h-ong m0t sd Id chg' luu lug'ng gid thiJa, nhung mdt sd Id khdng kjp tfidi dieu chmh luu lupng gid ehp' khdc khdng du gid sgeh theo yeu clu, nhung 2.2 Cong ty than Mdng Dwong hdm luong md khdng vuot qud gidi hgn cho Hidu qua thdng gid d cde gucng Id chuin bj vd phdp (Bang 2) Id cha: d ede guang Id chuin bj luu lupng gid edn Chi dp thdng gid ddo Id vd d cde ham, trgm: thilu, tdc dp gid nhd vd nhigt dp khdng tuang Uidng gid eho cdc guang Id nhd ede qugt cdng suit ddi eao hdm lupng CH4 va CO2 tgi cdc Id ehp' dam khdc nhu FBD-6.3; 2DBKJ-6.3; YBT-30; YBT- bao theo Quy pham Nhigt dd khdng tuang ddi 11 vdi dng gid 600-1200 mm Tgi cdc guang Id eao, khdng vupl: qud gidi han cho phdp (30 °C) cung nhu ham bam, trgm d\gr\, him ngp dc quy luu Luu lupng gid cung cap eho nhilu Id ehp khdng lugng gid thilu tu 13 din 20 %, nhung hdm lug'ng ddp ung yeu eau (Bang 3) rd gid md Nhit su dyng trgm qugt gid hut: 2K56-N°24 vd BD-II-6N0.17 Chi dd thdng gid d cde md gidi thigu Bang Sing Kit qud gid vd tgi m6 Mdng Dwang TT Guang Ifl Lfl DVTG -80 K8 VM (gifl sgeh) Lfl DVPT -50 K8 VM (gifl thai) Lfl DVTG -35 K8 CT (qlfl thai) Lfl DWC -70 K8 CT (gifl sgeh) L6 DVTG -60 H10VM (gifl thai) L6 DWT -80 H10VM (gifl vdo) Lfl DVTG -100 I12VM (gifl thai) Lfl DVTG -140 I12VM (gifl vdo) Lfl DVTG -100 1111 VM (gifl thai) L6 DVMC -140 1111 VM (qifl vdo) L6 DVTG -100 G9CD (gifl thai) Lfl PVMG -170 K8VM (gifl vdo) Lfl DVMC +5 H10CD (gifl thai) 14 Lfl DVMC -80 H.10VM (gifl vdo) 10 11 12 13 Ning dfl khi, % CH4 CO2 0,0979 0.1154 0.3405 0,2119 0.0345 0.1837 0.0057 0.0944 0,3216 0,1617 0,0868 0,1002 0,1008 0,1236 0,1051 0.0413 0,0250 0.2150 0,0144 0.0834 2.3 Cdng ty than Thing Nhit Khu Lfl Tri tri khai thdc 10 Ifl chg vdi san lugng 1,25 triflu tan Luu lugng gifl qua cdc Ifl chg thilu 7+25 %, ridng Ifl chg muc -29/+16 PV6D thilu 45 % Cde guang 16 thi eflng dugc thflng gifl bdi qugt FBD-7.5, BDKJ-6.3, YBT-30, YBT-22, YBT-11 kit hgp vdi ing gifl mim dudng kinh 600 mm Luu lugng gifl d p eho edc guang lo cfln thilu Tuy nhidn, tie dfl gifl, hdm lugng mo vd dilu kifln vi hdu khflng VUQI qud gidi hgn cho phdp Tgi nhilu guang ifl ehuin bj dilu kign vi hdu tuang dii nflng dfl I m vd nhidt dfl khd ego (28+29 °C) Luu lugng gifl vdo ede him bom, trgm didn, ngp dc quy chua ddp dng ydu clu (thilu tu 17 din 43 %) Mdc dfl rfl gifl tuang dii Idn (0,3+3 mVs) nhilu eua gifl ldm bdng g i vd chat luvng thi Nhigt Tflc dfl dfl gifl °C m/s 1.34 27 26 1.36 28 1.22 27 1.25 27 1.67 26 1.63 29 1.25 27 1.28 28 1.31 27 1.33 28 1.22 27 1.25 29 1,4 27 1,4 Luu lugng Danh gid mVs Qv/c Q.6 Thilu 50 3,33 3,44 Thilu 50 Thilu 6.7 4.40 Thilu 6.7 4,48 6,0 5,4 Dgt 6,0 5,46 Dgt 6,0 5,32 Dgt 6,0 6,4 Oat 6,2 3,12 Thieu 6,2 3,6 Thilu 7,5 4,95 Thilu 7,5 5,06 Thilu 7,2 5.31 Thilu 7,2 5.28 Thilu eflng, quan ly ehua ddp ung yeu clu Ting luu lugng gio saeh d n eung d p cho todn mo id 166,3 mVs Tren thgc t l luu lugng gifl vdo mo chi dgt 77 % lugng gifl rfl khd cao d khu vge cde trgm quat (tai trgm qugt mue +52 vd +104 tuong ling bdng 16,3 m'ls va 10,2 m'/s) Nhu vdy, trgm qugt khflng cung d p du luu lugng gifl cho mo theo k l hogeh san lugng 1,25 Tr tan/ ndm Nhdn xet chung: vdi so dfl hg thing cdc dudng 16 hign tgi d edc mo, hg dp mgng gifl chug eao (khoang tren dudi 200 mmHzO), ndng lgc nhilu trgm qugt vdn cfl t h i dap dng yeu edu thong gifl mo Tuy nhidn, can chu trgng cde bidn phdp giam sue can ehung cua mgng gifl nham tdng eudng luu lugng gifl cho mo Trong cdc ndm tdi, tiln hdnh khai thde d cdc mdc sdu han d n d i tgo hd thing CtfNG NGHIEP MO stf 1-2015 ^^[ KHOA HOC VA CANG NGHE MO dudng Id, hoan thign so dd thdng gid d l cai thign dilu kign hau tgi cde vj tri cdng tac md Phan phdi gid va yeu cdu thdng gid d edc md than hdm Id Qudng Ninh Trong nhilu ndm qua, cCing vdi tang san lupng khai thdc cac md than hdm Id dd tiln hdnh md didn san xuat theo hudng xudng sau Kit qua khao sdt ty lg phdn phdi gid thyc t l d cae hd tidu thy dan Bang Tren ca sd ndy cd t h i phan tieh muc dp dam bao thdng gid vd xdy dyng k l hogch trang bj qugt gid hpp ly ddp dng yeu edu san xuit cae nam tdi Theo sd tigu d Bang cd t h i dua cdc nh$n xdt sau: Lupng gid sgeh thdng gid cho cdc 16 cho- Qkt chilm it nhit 1/3 vd trung binh bdng 45 % luu lupng gid todn md Lug'ng gid eho cA& guong Id dao Qcb chilm 27,9 % (ridng d mi Khe Chdm bdng 1/2 tdng lup'ng gid sgeh, thi edng ddng thdi khd Idn sd guang Id) Luu lupni^' gid yeu c l u ddo Id khdng dudi 24-2,5 m^/s vA tgi vj tri dgt qugt can dam bao luu lupng gi6 khoang m^/s Vdi cdng nghd khai thdc vd d ^ Id d nudc ta, lup'ng gid cin thilt cho Id ch^^ trung binh bdng khoang tin luu lupng gid thi cdng ddo Id Bdng Ty 1$ phdn bd gid d cdc hd ti§u th{i tgi mdt sd md than Qudng Ninh San l u g ô ^ ^ ã Q C - ^ Q Qt* ' Q « ^ Qr, "^ Tr.T m'/s m'/s m'/s 8.2 18.7 43 22.5 21.1 1.29 107 45.8 Mflng Duong (1) 153 51 33.3 78 50.9 11.1 4.7 Khe Chdm (111) 1.0 Mo % % 17.5 10.3 7.7 31.6 21.1 15.9 8.2 12.6 18.7 5.1 9.1 27.9 9.7 11.7 7.7 Thing Nhit (11) 1.35 120 74 61.7 21 Mgo Khd (SH) 1.45 196 110 56.4 50 • 25.6 Duang Huy (11) Quang Hanh(lll) 1.22 0.9 192 125 66.7 43 34.8 43 60.7 22.5 ^.- 1.21 —J^* '^ 46.3 ••?.V 'V Trung binh, % Qai QE '^ % % 9.1% Yc,mVs T/tl, •>, 7.8 64.5 71.0 75.0 68.0 84.4 87.7; 108.8 101 ^ 76.3 67.5 87.5; es.T" 82.0 Gtii chu: Tai cdt so La ma ngo$c dan biiu thj hgng md theo nd Mdtan Trdn thyc t l , luu lupng gid qua cdc Id ehp dgt khoang 80 % so vdi yeu eau Vdi didn khai thdc phdn bd tan mgn, nhieu md dp dyng sa dd thdng gid vdi nhieu trgm qugt (md Quang Hanh ed thdi dilm su dyng din mudi trgm qugt) Do edc dudng Id da ddo tu nhieu ndm trude, nen thudng cd tilt dign nhd Khi khai thdc d ede muc sdu, sue can mgng gid se tdng Idn Cin cd k l hogch thyc hign cac bidn phdp giam sue can eae dudng Id d l cd thd tang lu'u lupng gid cho md Tren thyc t l , sd lupng cdc guang Id ehp' vd Id chudn bj khdng dn djnh; vgy cin thudng xuyen dilu chlnh phdn phdi gid Trong tinh todn thdng gid md, edn dy tinh luu lupng gid dy tru Dilu ndy rit quan trgng vd ddy cQng Id co sd cin chu y lya chpn qugt gid ehinh eho md Trong nam tdi san lupng than cua nhilu cdng ty him Id se tdng khoang 1,5 Ian Cdng suit Id chp' se tdng them khoang 35440 % Ket qua khao sdt cho thiy, trung binh mdi Id ehp hogt dgng cin tri thi edng khoang 2,5 gu-ang Id chudn bj Ddy Id ca sd quan trgng tinh luu luyng gid cin eho logi hp heu thy gid ehu ydu m CONG NGHIEP MO S t i - S Can dp dyng bidn phdp diy nhanh tiln dp ddo Id nhlm giam sd hd heu thy gid mo Ddy IS mpt cde giai phdp dam bao thdng gid chd md chua the thay ddi qugt gid mdi Tinh toan thdng gio cho cac md than Khe Cham, Mdng Duo'ng va Thdng Nhdt Tu k l hogch san xuit giai doan 2013-2015 cua, cac cdng ty than Bang cd the nh^n x6t, nhung nam tdi cdng nghg khai thdc vd ddo; Id khdng thay ddi Idn Md than Khe Chdm hign tgi tgp trung khai thdc muc -225/-100 tgi khu Khe Chdm I vd ddo h$ thdng dudng Id chuan bj mdc -300 tgi khu Khe Cham 111 Ndm 2015 dign san xuit se tiln hdnh ddng thdi d mdc -160/-225 tgi khu Khe Chdm I vd mCfCS -100/-300 khu Khe Cham III Didn khai thde mo Mdng Duong ndm 2014-2015 tri d cde muc -100 -160 vd -160250 Tgi md Thdng Nhdt, d khu Ld Tri ndm 2015 bd tri Id ehp khai thdc mue -35/-9Q vd 13 guang Id ddo d muc -140 Kit qua tinh luu lup'ng glfi eho cdc md dua Bang _^^ KHOA HOC V& CtfNG NGHC MO Bdng Bdng tdng hifp kit qui tinh luu luang gid ndm 2015 Bdng Ki hoach san xuit cdc md nhung nam 2012*2015 -I ' "Danh muc ' ,: J < l hogch Cdc nam T 2013 20f4 2015 San luQ-ng tha 1, ngdn T Mflng Duang 1,4 1,6 1,5 Khe Chdm 1,05 2,2 2,8 Thing Nhit 1,45 1,65 1,955 Ddo ifl, m Mflng Duang 24.050 24.900 24.750 Khe Chdm 13.800 27.151 18 417 Thing Nhit 14625 9610 8400 S i Ifl chfl' Mflng Duang 68 68 68 Khe Chdm e Thing Nhit ' "1112 14 s i guang 16 dao Mflng Duong 2125 2225 2225 17 Khe Chdm 20 23 , ^16 14 13' " 4' imuS ^ "• ^ Tdn hfl tidu thy gifl Liru lifgng gifl ySti ran, m'/s Mflng ' Thing Khe Nhat Chdm Duang Cflng ty (han Luu iu(?ng gifl ydu 107,7 eiu eho Ifl ehg Luu lup'ng gifl yeu 75,76 eiu eho Ifl chuin bi Luu ItrQ^g gtfl yeu 26,10 d u cho bfin trgm Luu lirgmg gl6 rfl 16,1 qua cdc«fins trinh Luu l u ^ g tri 17,6 edc diffl'ng Ifl Ting luu lugna gifl 267,6 i"*^ 86 73 34,11 68 67 581 33,3 23,2^ 19,8 12,4 li 208,5 fl 216,8^ Ndng li^c cua cac trgm qugt gid chinh Hidn tgi, md than Khe Chdm su dyng trgm qugt d ede mue +32, +35 vd +56 vdi cdc qugt 2K56-N°24, BD-ll-6 -N°16 vd 2BKJ-6.3 ^ ^ »-^.|a^ ^ '_ s ' \ / ' \ \\ /\ ' \\ '\V \\- V.\ \ // \\ \ \\ \i \, -\r \V X \ ^ \.^ J-i \-:^ \ " m - ' - - • - - — — — m - • i, 'Z V L -X •s V -• I^H RB—B-'x X •V • ^ ^PIIIHIIIHP^^^^^™'"^'^^^! H Dudng dac tinh quat gio 2K56-1 Luu lupng gifl yflu eiu ndm 2014 Id 226,63 m'ls vd ndm 2015 Id 267,6 m^/s Tir ndm 2015, ede duflng lfl khu Khe Chdm III thflng vfli khu Khe Cham 1; ndng lue ede trgm qugt se khong ddp l>ng yeu eiu thflng gifl mo Cin thilt cai tgo sa d i thflng gifl vd djnh huflng thay qugt gifl ndng luc ego han ho§e xdy dung trgm qugt mfll Mfl Mflng Duong duqrc thflng gifl boi ede qugt VOKD-2,4 tgi m^t bdng +4 vd FBDCZ-ll-No.18 a mue +25 Luu lupng gifl yflu clu Id 170,02 m% CtfNG NGHIlP M i stf 1-2015 KHOA HOC VA CONG N6HE MO Lupng gid thyc t l vao md Id 138.52 mVs vd lupng gid rd tgi ede trgm qugt Idn tdi 56,4 m^/s, eao hon nhilu so vdi tinh todn (22,9 m^/s) D I dap ung yeu edu thdng gid ede ndm 2014+2015 (luu luyng 170,2 m% vd 208,5 m^/s), cin dp dyng bign phdp giam rd gid d cdc trgm qugt; ddng thdi thay ddt gdc Idp canh eua qugt vd trang bj ddng ea edng suit eao han Tilp theo d n thay qugt gid mdi, vi qugt VOKD-2,4 dd su dyng han 3D ndm Md Thdng Nhit: Nang lye ede b^m qugt d mdc +52 vd +104 dap ung yeu eau luu luprig gid md ndm 2014 Id 198,1 mvs Nam 2015, mo dup'c thdng gid bdi trgm qugt muc +52 vdi yeu eiu luu lupng gid Id 216.8 mVs Can thay tfie dpng ea qugt rang suit eao han hoge qugt gid mdi (djnh hudng qugt FBDCZ-10N° 35) Vdi b^m qugt gid se dam bao thdng gid cho mo frieo ke hogch san xuit nam 2014+2015 vd cdc ndm tilp theo Giai phap tang ciFdng thong gid thdng gid cho cac md md hdm Id Cdng ty than Khe Chdm: tu ndm 2014 didn san xuit md rdng xudng sdu, san lug'ng khai thdc tdng len vd hd thdng dudng Id muc -300 Khe Chdm I n ndi thdng vdi md Khe Chdm Luu lup'ng gid y d j clu eho cac hd tidu thy ndm 2014 Id Q2oi4=3(^ m^/s D I xuat phuang an tdng cudng thdng gi6 nhu sau: su dyng Igi trgm qugt 2K56-N°24 tgi mCto +32; tgi mdc +35: trang bj qugt mdi FBDCZ-N°27; xdy dyng mdi cdc trgm qugt mdc +20 (BD-II-^ N°16) vd mdc +112 (qugt FBCD2- N°27) Cdc trgrrf qugt ndy se ddp dng yeu clu thdng gid md cdc ndm 2014+2015 va nhung ndm tilp theo Dilm cdng tae eua cdc qugt gid xde djnh trdn edc hinh H.I vd H.2 Chi dg ldm vide cua cdc trgm qugt gi6 dupe thi hidn d Bang H.2 DuKfng d$c tinh quat gio FBDCZ-No.27 (nam 2015) Bdng Cdc thdng sd cua cdc trgm qugt gid TT Vj tri qugt Mi>c +32 Mire +35 i/liJe+112 Md higu 2K56-N"24 KFBDCZ-N''27 |FBDCZ-N''27 iBD-ll*N"16 l'^"-"^" A Y^u clu C h i dfl ldm vifle ciia qugt Qt, m'/s H„ mmH20 a,m°/s H„ mmHzO Gflc Ido cdnh, ^ 101 265 101 40" m 265 81 170,6 112 304 -5" ]B 75 146,3 112 — -.«i" ,| ml 304 45 170 48 184,7 Cflng ty than Mflng Duong: sau nam 2015 mo se kit thuc didn khai thac tr§n muc -97,5 vd phdt triin xuing sdu mU'c -250 Chi dfl Id vigc cOa ede qugt gifl VOKD-2,4 vd FBDCZ-N°18 gifli thigu a Bang Cflng ty than Thing Nhdt tCr ndm di^n san xuit CtfNG NGHIEP MO stf 1-2015 •"r^^^"^ phdt trien xuing muc -140 vd chi sO dgng trgm qugt gifl chlnh tgi m$t bdng +52 Cin thay thi qugt gifl mfli v6i luu luo-ng, hg dp ifl'n han (chon qugt FBDCZ-10-N°.35, Bang 9) Qugt gifl ndy se ddp ilng ydu clu thflng mo cho ea nhO-ng ndm tilp theo Bffil KHOA HOC V i CtfNG NGHE MO Bdng Cdc thdng sd cua cdc qugt gid nam 2015 TT Vjtrf MCrc+4 Miic +25 Md higu qugt VOKD-N''2,4 FBDCZ-II-N''18 Q, m'/s 145 63,5 Yeu eiu Hv mmH20 234 90 Q„m''/s 150,5 67,5 Chi dfl ldm vl#e H„ mmH20 238,8 103,2 dfl 40° +2,5" Sang Thdng sd cOa cdc qugt gid chinh TT Vitri Mire +52 Md hl$u qugt FBDCZ-10-No35 YSudu Q,m''/s HyHlmHaO 229 465 Kdt lugn Cdc trgm qugt hi^n dang sir dgng fl* cdc mo cfl nang lue ldm vigc khflng cao; dign sdn xuit phat triin mo* rflng xulng sdu dflng nghTa vfl'i viflc tdng, giam s i luong cae trgm qugt hOt chlnh N I U tdng san lug'ng khai thac nhu k l hogch dgt eIn thilt phai b i sung them mflt so qugt cfl luu luong va hg dp Ifl'n, eg t h i nhu sau; •:• Cflng ty than Khe Chdm tu nam 2013 tang tir trgm qugt len trgm, su dgng lai trgm qugt gifl 2K56-N°24, qugt BD-ll-6-N°16 vd diu tu mfl'i trgm qugt logi FBDCZ- No.27; •:• Hi^n tgi, Cflng ty than Thing Nhit su dgng trgm qugt K - N ' vd BD-ll-6-N°17 B i n ndm 2015 thflng gifl bo'i trgm qugt gifl ehinh vd oin phai thay t h i bo'i qugt FBCDZ-IO-No.35 •:• Den ndm 2015, Cflng ty than Mflng Duang su dgng trgm qugt VOKD-2,4 vd FBDCZ-N°18 Khi mo kit tliue khai thdc tang -97,5 vd mo' rflng dign san xuit xuing muc -250, trgm qugt mire +4 eIn thay t h i qugt gifl mfll vd ehuyen sang chi dfl thflng gifl hut.D Chi dfl eflng tde cug qugt H„ mmHzO dfl Cum'ls +0" 465 229 The coal mines in our country are in the transition period to a deeper horizon of exploitation; oven at the same time increasing the number of meters required training preparation and annual coal production System of mine wori^ings, as well as the ventilation netvi/ork in most mines is relatively complex In many mines applies suction method of ventilation with several fan stations Ventilation network is constantly changing due to changes exptoltation area and flow rate of methane in the mine The article presents the results of assessment of the mine ventilation and justified emphasis on the selection of ventilation equipment meehng the requirements of the production plan in the coming years for a number of coal mines in Cam Pha) Nguat bien tap: Nguyen Binh TIN VAN NGANH MO (Tiip theo trang 89; nin kinh t l chua phdt trien, hg ting ca sa yiu kdm vd chua efl lao dflng tay nghi de hfl trp' diu tu Cfl tin Id phai xdy dung cde nhd mdy luyfln nickel nhu Indonesia - nhung cfl dilu Id igi ehinh cdc nhd mdy thdp eua Trung Quic diu tu xdy dung cac du dn luyen nickel Trcng thdng 6, Bloomberg cho bilt xdy dgng mflt nhd mdy Igyfln nickel Ifl'n dui?e xuc tiln o' Suiav/esi, day la mflt lien doanh giO'a mflt cflng ty mo Indonesia vd Cflng ty thdp Trung Quie Tsingshan Steel Hai bSn hy vgng se luygn me diu tidn thdng Gidng 2015 vd dgt cflng suit thilt k l 30.000 t i n nickel/ndm vdo cull 2015 Mflt s l dg dn ifl'n khdc cQng dang giai dogn xuc tien de b i sung thdm 60.000 to 100.000 tin nickel moi ndm Vdo mfl'i dilm Indonesia ban hdnh Iflnh elm, nhilu ngufl'i bdy to nghi ngfl' v l tde dflng lau ddi cua ignh elm Cfl y kiln Id chlnh ede nhd chinh trj ldm nh&ng quyit djnh tgo thieu hgt nickel vd cfl t h i chlnh hg ldm dao nguflc nhanh chflng, vd vi t h i vdi du dn xuit hl§n gid nickel tdng vot Cdc nhd phdn tich cho rdng hdy dfl'i xem gid nickel gidm cde dg- dn luy^n nickel cua Indonesia vd Trung Quie diu tu 6' Philippines dl vdo san xuit ndm td\.n (NguSn: Nickel Investing News) Bue Toan CtNG NGHICP MO stf 1-2015 ... cdng tac md Phan phdi gid va yeu cdu thdng gid d edc md than hdm Id Qudng Ninh Trong nhilu ndm qua, cCing vdi tang san lupng khai thdc cac md than hdm Id dd tiln hdnh md didn san xuat theo hudng... thdng gio cho cac md than Khe Cham, Mdng Duo''ng va Thdng Nhdt Tu k l hogch san xuit giai doan 2013-2015 cua, cac cdng ty than Bang cd the nh^n x6t, nhung nam tdi cdng nghg khai thdc vd ddo; Id... cdng nghd khai thdc vd d ^ Id d nudc ta, lup''ng gid cin thilt cho Id ch^^ trung binh bdng khoang tin luu lupng gid thi cdng ddo Id Bdng Ty 1$ phdn bd gid d cdc hd ti§u th{i tgi mdt sd md than Qudng