Đổi mới công nghệ nhằm nâng cao hiệu quả và mức độ an toàn khai thác vỉa dày trung bình, thoải đến nghiêng tại các mỏ hầm lò vùng quảng ninh

Thong tin khoa hoc cong nghe m o ^ I OOI MOI CONG NGHE NHAM NANG CAO HIEU QUA \ A MlTC DO AN TOAN TRONG K H \ I THAC VIA DAY TRUNG BINH THOAI DEN NGHIENG TAI C.AC MO HAM LO \ UNG QU.ANG MNH TS Tran Minh Tiln TS Dao Ngoc Ho^ng I ien Khoa hgc Cdng nghe Mo - Vinacomin Bien tap: TS Dao Hong Qudng T6m t i t : Cdc khu virc via ddy trung binh, ihodi den nghieng chiem khodng 23"a tdng trir lirgng dja chdt huy dgng tai cdc mo hdm Id ihugc TKV Hien de khai thdc diiu kiin ndy chu yiu dp dung cdng nghi sir dting cgt thuy luc dan va xd khdp vai nang sudt lao dgng, cdng suat Id cha thdp \ a muc dg an todn cdn hgn che Nghien cuu ddi mdi cdng nghe nhdm ndng cao hieu qud khai thdc vd mirc an todn Id ngi dung chinh ctia bdi bdo 1.D$tvande Theo kit qua ting hpp trCr lupng vd dac diem dieu kign dia chit - ky thugt md tgi cdc md ham Id viing Quang Ninh thupc TKV [2] Vipn KHoa hpc Cdng nghp Md thyc hipn cho thay tru lupng cde khu vye via ddy trung binh(1.2 + 3,5m), thodi d i n nghidng (0 + 35°) khoang 144,8 tripu t i n chilm 23% ting s i 630,6 tridu tan tn> lupng than dia ehit dupe quy hogeh huy dpng vdo khai thdc cdc dy dn xdy dyng md him !d Ting hpp khii lupng md giai dogn tif ndm 2010 - 2015 [3] tgi cdc md h i m Id thupc TKV cho thiy, sdn lupng than khai thdc tiF cac khu vyc via ddy trung binh thodi d i n nghieng chiem tiF 17 + % tong sdn lupng than khai thdc hdng ndm bdng phuong phdp him Id Theo ke hogch khai thdc giai dogn 2015 ^ 2020, ty Ig ndy se tilp tgc tdng Idn De ddp ung ydu d u tren, vipc doi mdi cdng nghp khai thdc theo hudng ndng cao hipu qud vd mirc dp an todn cho dieu ki$n via ddy trung binh thodi den nghidng se ddng gdp tfch cye d i n sy phdt tnln bin vOng cua ngdnh Than Viet Nam ndi chung vd cae md ham Id viing Qudng Ninh ndi ridng Hi$n tr^ng cong ngh# khai thac via day trung binh thodi den nghieng Hi$n d l khai thde cde via than ddy trung binh thodi d i n nghidng, cdc md ham Id thupc TKV chu y l u dp dgng cdng nghg khai thde khai thdc thu cdng khiu than bing khoan no ching giu Id chp bdng eOt thuy lyc don vdi xd ©

nSm 2005, tai Cong ty than Khe Chdm, da trien khai ip dyng cong ngh0 ccr giOi hba d6ng bO cho dieu kipn vfa day trung binh, thodi din nghieng Kit qua ap dgng chp thiy, sin lypng khai thdc than ty cac 16 chp dp dyng cong nghe tyong d l i on djnh va dat tir 233.000 + 388.000 tan/ndm, trang binh 289.000 tln/ndm,ndng suat lao d6ng dat ty 9,2 + 11,9 tIn/cong trung binh 10,8 tln/c6ng So sdnh v6i 16 chp thuy lyc don cung dilu kien tai Cong ty, sdn lypng 16 chp co g i * cao g i p 2.9 Iln, ndng suit lao dOng cao gap 2,7 vd gid thdnh phdn xybng thap hpn ty 50.000 + 60.000 aing/tln Kit qua d?t dypc thoi gian qua dd chl ring, cdng ngh§ cp gidi h6a ding bO gidi quylt dypc cdc ySu c l u v l ndng suit, sdn li/png, gid thdnh cung nhy myc dp an tpdn lap dOng Ddy Id cong ngh$ dd khdng djnh dope vj tri vd c6 tilm ndng mo rpng dp dgng cho d l i typng via ndy d cac m6 him 16 vimg Qudng Ninh 3.1 Kit qua then khai ap dung gii xich thay thi CQt thuy lifc dom vdi xa khdp tai Nam Miu Nam 2016, Vipn Khoa hoe Cong ngh^ MdiS phii hpp vdi Cong ty than Nam Miu triln kliai dp dgng cong nghp khai thde sy dgng gid xlcli di thay t h i cho cpt thuy lyc don v6i xd khdp dieu kipn via ddy trung binh tai 16 chp I-7T2 mire +40/+80 via tn,i Khu vyc dp dung c6 ehieu ddy via thay dli tii 1,3 + 3,9m, trung binh 2,3 m, thuie lo?i In djnli trung binh v l chilu ddy, v6i mirc dp biln dOng 14,9% Trong via c6 tif + ldp dd kpp, ting chilu ddy tir + 0,36m, trung binh 0,1m Gfc doe via thay d l i tip 13 * 36°, trung binh 26°,«« mirc dp biln d6ng 24,8% Vdch via gom ldp sfl kit n i m sdt via than e6 chilu ddy tir 0,2 * 0,6m, trung binh 0,4m; tilp theo Id cdc Idp bOI kit vd cdt kit eo ehieu ddy tir 10 + 12m, trung binh 11,0m; vdch thupc toai pn djnh trung bind, tinh s$p trung binh d i n khd s|p d l Tn,i via gom I6p sdt kit mong ndm sdt via than, phia dyd'i ib'p bpt kit, cdt k i t ed chilu ddy lu 3,1 + 14,7m, trung binh 9,1m, I n djnh trung blnli den I n djnh TrO' lupng dia chit Id 116.942 t i l trO lypng ccng nghipp Id 96.754 t i n Boi m6ti cong ngh? khai thdc via day trung binh thoai den nghieng Tir ndm 2007, mOt s6 lo^i vi chong thuy lyc tiSn tien hon nhy gid khung thuy lyc di dpng (gid khung) vd gid thuy lyc di dOng liSn kit xich (gia xichj^da du'pe dua vdp thy nghipm khai thdc h? tran than ndc cac 16 chp via day tai m6t so mo ham 16 vimg Qudng Ninh Cho din gid khung vd gia xich da dype dp dyng t^i hiu het cdc mo him 16 Kit qud dp dgng cho KlK \ M S()T/2017'CNKT HAM LO Khu vyc dp dgng dype chuin bj phu hppv* h$ thing khai thde ddi thep phyong, khiu giJI tir bien gidi ve trang tdm vdi chilu ddi 16 ctw trung binh theo hydng d i e 100m Lo^i gid xich ZH18ao/16/24ZL, vdi chilu cao ehlng giO tir 1,6 + 2,4m dypc lya chpn d l * dgng cho 16 chp ndy So d l cdng ngh0 khai thSc Thong tin khoa hpc cong nghe mo Id chp su dyng gid xich the hipn tren hinh TiF ngdy 07/3/2016 Id chp bdt dau thyc hien cdng tdc khau than vd phd hda ban dau Tinh den dd dgt dupe mdt so kit qua nhu sau: - Mac du mdi dua vao dp dyng thdi gian ngdn \6 chp gia xich da dat dupe sdn lupng tuong duong va vupt cdc Id chp thuy lyc don trude ddy Trong giai dogn khai thdc on dinh, san lupng da dgt 9.639-14.179 tan/ thang, trung binh 13.330 tan/thdng, tuong ung edng suit 160.000 tan/ndm, nang suit tao ddng 5,0+5,6 tan/cdng tnjng binh 5,1 tan/cdng Nhu vgy, cdng suit Id chp gid xich tdng + 10%, nang suit lao ddng tang 30+40% Cdc chi tieu khde nhu chi phi go, ehi phi ludi thep, chi phi thulc n6, chi phi kip no, deu giam hodc d miFc tuang duong so vdi cdc 16 chp cpt thuy lyc don trudc day, nhu chi phi ludi thdp chi bdng 3.6 ^ 4,4%, chi phi go chi bdng 24 + 28% so vdp Id chp d t thuy \\/c dan - Gia phdn xudng binh quan cua Id chp gid xich khoang 303,4 nghin dong/tan, thap hon 67.972 dong/tin so vdi Id chp chong bdng d t thuy lyc dan, dieu kien via tuong ty - Trong qud trinh ldp dat va khai thdc Id chp gid xich da khang dinh dupc muc dp an todn cao hon cac Id chp thuy lyc don ^ l u kipn via day trung binh cdc gid duoc lidn k i t vdi thdnh mpt he thong da logi bd dupe hipn tupng vi chong rong ndc eye bd Ngodi ra, nhd he thong dieu khien tap trung bdng thuy lyc, cdng nhdn khdng phai thu hoi vi chong ludng phd hda vdi cudng dp lao dpng cao nhu cdc 16 chp thuy lyc dan 3.2 Kit qua ap dijng ca gidi hda khai thic via diy trung binh doc thoii den nghieng t^i Quang Hanh Hinh 1- SatJd cdng nghe khai thdc to chg sir dgng gid xich -Idv^ tai -«thdng gid: 3-Id chtr - vi chong tSng ctAJng ngS t>a: • cui ngdn dM dd phd hda: 6.7 - gid xich ^uy lgc; 8-lirdith^p, 9-khdm chan: 10 - vi chdng thuy lgt: dcm + xa hdp; 11 -khdmdAu; 12 • mdng cdo; 13 - xich lien kit gid, 14 - tim chdn dd fOid hda; 15 -16 Q'^ KHCNM S6 1/2017 • C NKT HAM 1.6 IP Thong tin khoa hoc cong ngh? mo Ndm 2015, Vipn Khoa hpe Cpng ngh# M P tilp ehi tir 54 + 65 ngydi/ngdy ddm vd chl bing dd phii hpp vdi Cong ty than Quang Hanh trien 0,6 lan so vdi 16 chp thuy lye don, gid thuy ti/t khai dp dung cong nghe co gidi h6a tai 16 chp Thyc t l dp dgng, ndng suit lao dOng mdi TT-6-1, mirc -120/-90, via 6, khu Trang tam ehi dgt trang binh 9,3 tan/eong, thip hon thj6 Khu vyc 16 chp co chieu ddi theo hydng d i e ke (12,0 tan/cdng) nen gid thdnh phdn xudi^ 90 m, theo phypng 290m Chieu day via than cua 16 chp (tinh binh qudn trpng giai dogn vi tir 1,7+ 3,2m, binh 2,4 m; gdc doc via 4) la 272.125 dong/tan, cao hon so vdi thilt i