T h o n g t in k h o a h o c c o n g n g h e r r o w ''''Divnl''''L (jld I''''lieit li''''qiu/ mi ite Jtuut CONG NGHE KHAITHAC HOP LY CHO PHAN TRiTLirorNG llflljrc 50 ^ +200 KHU THAN THilNG CONG TY TNHH MTV THAN[.]
w T h o n g tin k h o a h o c cong n g h e r r o 'Divnl'L (jld I'lieit li'qiu/ mi ite Jtuut CONG NGHE KHAITHAC HOP LY CHO PHAN TRiTLirorNG llflljrc -50 ^ +200 KHU THAN THilNG - CONG TY TNHH MTV THAN NAM M A U - VINACOMIN /n recent years Nam Mau Coat Company has strongly developed with rapid growths in coal mining operation, increasing the tabor safety and improving the working conditions Basing on the results from the evaluation of the mine geotechnica! conditions, the current state of the mining technology and the coal output demands in the coming years of Nam Mau Coal Company, Institute of Mining Science and Technology has proposed the proper mining technology for the coal reserves at the level -50 ^ +200 of Its Than Thung area TS TRU'O'NG DU'C DU' TS DAO H N G Q U A N G ThS LEVANHAU Vi$n Khoa hQC Cdng ngh$ Mo - Vinacomin D a t v a n d e Trong 10 n a m g a n day, C o n g ty t h a n N a m M l u da c nhi>ng tang tru'o'ng t r o n g viec nang cao s a n lu'ang va rrwsc dp a n toan, cai thien diSu kien l a m viec cho cong nhan V i d u , n a m 0 tong s a n lu-o-ng khai t h a c cua m o dat 0 t i n , d i n n a m 1 , san lu-cng t a n g len 2.003.000 tan (mu-c t a n g trung b i n h mdi n a m k h o a n g 143 0 t a n - hinh 1) S i r t a n g tru'o'ng m a n h m e tren la ket q u a cua viec ap d u n g rong rai c a c giai p h a p , tidn bp k h o a hoc c o n g n g h e v a o t h y c te s a n xuat Trong d o , viec ap dung c a c loai vi ch6ng thuy lire (cot thuy d e n , gia thuy l y e , gia k h u n g t h u y lye) vao c h n g gii> g u ' a n g khai thac, da g o p p h a n t a n g s a n lu-p-ng v a miKC d p an t o a n , cai thien dieu kien lam viec c u a cong nhan D a e biet, d a u n a m C o n g ty ph6i h g p vo-i V i e n Khoa hoe C o n g n g h e M V i n a e o m i n (Vi$n K H C N M o ) du'a v a o a p d u n g thu- n g h i e m cong nghe co" gio-i h o a d o n g bo khai thac cae via t h a n day, d e thoai ws U09 MSI •*" IZSO - ^11 ^ :;: • • 11 11 11 II 1 11 3DM WB soot no? XNB KW9 010 IMl Hinh Bieu the hien san Iwang than khai thac cua Cong ty than Nam fl/lau, giai doan nam 2000 den 2011 "^ T h e o k6 hoaeh s a n xuat kinh doanh eua C o n g t y giai d o a n n a m - c6 xet t h e n v g n g den n a m 2020, s a n lu-gng khai thac than h a m 16 t a n g ti> 150.000 tan n a m 2012, len t o i 3.500 0 t a n n a m (san lu'ang t a n g trung binh m o i n a m k h o a n g 450.000 tan) va dat 4.000,000 tan vao n a m 2020 V a i t h y e trang khai thae hien tai cua C o n g ty, kho c6 t h ^ dap u-ng ducfc t6c tang tru'o'ng giai doan tai, cae eong nghe khai thae d a n g ap d u n g c h u y e u la ban co" giffi hoa, nen kho khan viec nang cong suat cua cae fo chp' S6 lieu th6ng ke n a m 2011 eho thliy, s a n lu'p'ng khai thac than ti> 16 chp' ch6ng g i i j bang gia khung thuy l y e di d o n g ehiem , % , ept thuy lu'c d e n - xa kho'p chi§m 16,3%, cong nghe khai thac 16 doe via phan tang va cong n g h e khac c h i g m khoang 12,8% Trong do, san lu'ang tCf 16 e h g e a giai hoa dong bo chi c h i ^ m , % t6ng san lu-gng eua toan C o n g ty (hinh 2) D o vay, d6 d a p u n g n h u eau tang tru'o'ng t r o n g giai doan t a i , ngoai viec m a r p n g dien s a n KHCNM SO 7/2012* CNKT HAM LO Thong tin khoa hoc cong nghe mo xuat, Cong ty c^n day mgnh cong tae nghien cu'u, u-ng dyng nhi>ng cong ngh? ca giai h6a khai thac a nhu'ng khu vyc c6 dieu kien thugn \ mtrc -50/+200 6.87 33 khu Than Thung 2.66-17,46 15-66 11433047 Viae -50/+200 35 8,51 Danh gia dieu kien dja 1.23-10.14 8-57 chat mo 523 310 Via6A -60/t200 3,63 34 Tren ca sa tai lieu dia chat, 4-53 Vien KHCN Mo tign hanh danh 1.37-8.08 Via 453 000 -50/+200 4,33 26 gia, tong hap va phan loai phan tri> lu'ang tu' mi>c -50/+200 khu 1.04 -6.59 6-68 283 966 Vial •50/+200 Than Thung theo yeu t6 chieu 2.03 30 day va goc doc, tinh chat da 15-67 0.7 - 5.64 3586.569 Via -60;t200 vach, tru via va cac yeu to anh 2,24 28 hu'ang to'i cong nghe khai thac, 57,411,850 Tong tu" hoach dmh eac cong Via 7: % nghe khai thac ap dung cho tCfng dieu kien via Tong hgp va phan loai tru' lu-gng dia chat du'gc the hi^n tren cac bang 1, 2, va cac hinh 3, 4, K§t qua danh gia cho thay, phan Ian tru' lu-ang thugc ve eac via than doe thoai den nghieng (chiem 65,11% tong tri> lu'ang danh gia), Vfa % Vfa A % / via 5: 13% Hinh Bieu ty le trO' limng cac via than KHCNM S 7/2012* CNKT HAM LO Thong tin khoa hoc cong nghe m o A^H W Sang Tong hcfp trw liro'ng than theo chieu day vi goc doc via Chieu day via, m Goc doc 0,7-1,2 45 T6ng Tru" lu'p'ng, tJn >3,5 1,2-3,5 432 748 0,21% 5,52% 19,57% 25,30% 198 736 303 507 5.502.243 0,35% 9,24% 9,58% 694.899 13.252.504 43.465.352 57.411.850 1,21% 23,08% 75,71% 100% Bang Tong hop tru" lu^ng than theo yeu to chieu diy vi gdc doc cua cic khu vi^c c6 ning cv gi&i hda Goc doc Tru' twgng dia chat, tan 1,2-3,5 m > 3,5m (M) 160 689 0,82% 4.073.864 20,92% 3.5m 1.2 - , m 15-35 Hinh Tru- Iwg-ng dja chat phan theo chieu day va goc doc via cua cic khu VLPC CO nang ap dung ca gi&i hoa trO lu'gng cae via than co kha nang ca giai hoa tu-ang d6i Ian, chi^m 52% (tyang Ccng 19.474 656 t^n); day la di^u ki^n thuan Igi d l Cong ty ap dyng rgng rai c6ng nghe ca gia'i hoa d6ng bp khai thac cac via than d6c thoai d i n nghigng Ph^n tru' lu'gng cac via than co goc d6c Idn han 35° chiem 34,88% (khoang tren 20 tn$u tan), tgi khu vyc cung c l n nghien cCru ap dung mgt so cong ngh# ca giai hoa khai thac cho - 8,3 mVlOOO tan, 16 chg gia khung ehf e6n tu' 4,3mVl000 tan va dan ch6ng tu' hanh hSu nhu' khong si> Hinh So- cong nghe khai thac cot dii theo phwffng, su' dung may khiu vi din chong tLP hanh, thu hoi than noc KlICNM s o 7/2012* CNKT HAM LO Thong tin khoa hoc cong nghe mo emo MuO'iaiMp " dung go Do do, viec ap dung cac vi eh6ng thuy lye dan, gia thuy lu'c va cao han la gia khung thuy luc di dong, dan ch6ng tLF hanh tai Cong ty than Nam Mau noi neng da gop phan cai thien di^u kien moi tru'6'ng, phue hoi va tri tham thu'c vat, De x u i t cac giai phap cong nghe khai thac hgp iy cho phan tru" lu'gng tij' mCpc 50 ddn +200, khu Than Thiing ^B^ Lad^via § L6*icvlalli4ii(j5iii MSTCAIA A WlTLDMaihltp -' "f- f -J: Mirarc c MSTCATB Nhin ehung, qua ket qua danh gia hien trgng cong nghe khai thac, dieu ki^n dia chat tai Cong ty than Nam Mau eho thay, eac loai hinh cong nghe Cong ty dang ap dung lu'ang doi phu hgp, gop phan 6n dmh va tang san lu-ang tho'i Hinh Sc cong nghe khai thac cot dai theo phwo-ng, khau gian qua Tuy nhien, de dam toan bo chieu day via bing may khau combai, chong giu'lo chcy bao tri mu'c tang tru'o'ng bang dan chong tir hanh cao, dap u'ng yeu clu ke hoach LO doc via tmvig gic san lu'gng, Cong ty can tilp tgc C6t Uiuy IL/C don nghien cLfu tn§n khai va ap LAcbcvialhAngg dung cac giai phap cong nghe vao tat ca cac cong doan qua trinh san xulit theo hu'ang tLPng bu'ac nang cao mu'c ca gio'i hoa nhlm tang san lu'gng va hieu qua khai thac than ham 16, cai thien di4u kien lam viec cho ngu'O'i lao dong, giam tdn that than Dg dat du'gc mub tieu do, Cong ty can tridn khai cae giai phap eong nghe theo hoaeh dinh Theo k§t qua danh gia, t6ng tri> lu'ang cac khu vu'c eo kha nang ap dung eong nghe ca giai hoa khoang 19,47 tneu tan (chi6m khoang 34% tong trulu'ang danh gia) Trong d6, Hinh Sc cong nghe khai thac cot dai theo phwcfng, phan triJ lu'gng cae khu vye vi'a khau gwcyng bang khoan no min, chong 16 bing gia khung c6 chieu day lo-n han 3,5m chilm 78,26% (15,24 trieu tan), day tu' 1,2 -3,5m chi^m 21,74% trO lu'gng Cong ty co th4 phan e6n lai thupe via co chieu (4,23 tneu tan) D6i vai phan ap dung hai loai hinh cong KHCNM s o 7/2012* CNKT HAM LO Thong tin khoa hoc cong ngh? m6 nghe ca gio'i hoa d6ng bg khai thac sau: - Sa cong ngh$ khai thac cot dai theo phu'ang, kh^u gu'ang bang may khciu combai, ch6ng gii> 16 chg bang dan ehong ty hanh c6 k i t c^u thu hoi than noe, ap dgng khai thac cac via than co chilu day lo'n han 3,5m, goc d6c d4n 35°, (hinh 6) - Sa cong ngh§ khai thae c6t dai theo phu'ang, khau toan bp chilu day vfa bang may khau combai, chong giu' 16 chg bang dan ehong ty hanh ap dung khai thac cac via than e6 chi§u day ti> 1,2 - 3,5m, goc d6e den 35° (hinh 7) Tri> lu'gng eac via than doc thoai d i n nghieng lu'ang d6i thuan lai (khong ap dung du'ac cong nghe ea gio'i hoa khai thac) ehi§m 31 % t6ng tru' luang danh gia (lu'ang ifng 17.907 238 tan) D§ khai thac phan tru' lu'ang nay, Cong ty ap dung hai loai hinh cong nghe khai thae truyen thdng sau: - Sa d6 cong nghe khai thac cot dai theo phu'ang, khau gu'ang bang khoan no thu cong, ehong giu' 16 cha bang gia khung thuy lu'c di dong ap dung khai thac cac via than day tren 3,5m (hinh 8) - Sa d6 cong nghe khai thac cot dai theo phu'ang, khau guang bIng khoan,no thu cong, ch6ng gii> 16 chg bang cot thuy lu'c dan - xa kho'p ap dung khai thac cac via than co chilu day tie mdng den trung binh (hinh 9), TrC? lu'gng cae via than c6 goc doc Ian han 35° chiem 34,88% t6ng tri> lu'ang danh gia 06i vo'i phan tri> lu'gng LO d9c via Ihang gi6 GSnh tSng cjdng MATCATA-A Li) doc vfa thing gifi GSnh tang cuOng Hinh Cong nghe khai thac cot dii theo phuong, khau guwig bing khoan no min, chong 16 bang cot thuy luv den - xa khop ^m:^mM \ ""H.,^.^ £-v-i u.« ™ !.»».,« 1 LoOi'priJnlJiii Hinh 10 Cong nghe khai thac Id doc via phan tang sw dung dan chong tLfhanh ket hcyp no cac l6 khoan dai nay, co tiie ap dung mot so ioai phan tSng, su' dung dan ch6ng tu' hanh, no 16 i