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Thong tin khoa hoc cong nghe mo AP DUNG THir NGHIEM KIP NO VI SAI PHI DIEN AN TOAN TRONG CONG NGHE KHAI THAC LO DOC VIA PHAN TANG tai Cong ty TNHH MTV than Dong Vong TS TRU''''aNG DISC DU" TS DAO H 6 N G[.]
Thong tin khoa hoc cong nghe mo AP DUNG THir NGHIEM KIP NO VI SAI PHI DIEN AN TOAN TRONG CONG NGHE KHAI THAC LO DOC VIA PHAN TANG tai Cong ty TNHH MTV than Dong Vong Recently, the domestic underground safety non etectrical delay detonators tiave been manufactured under the coordination of Institute of Mining Science and Technology (IMSAT) and the Chemical 21 Company The paper introduces the research results on the pilot application of the underground safety non - electrical delay detonators to the mining flowsheet of the sublevel roadway at Dong Vong Coal Company Theo ket qua tong hgp va danh gia, tru' lu-ong cac via than Cong ty than Dong Vong quan ly va khai thac cho thay, phan trCp lu-ong phan bo cac khu vu-c via c6 chieu day tu- trung binh den day, goc doc ^ 45° khoang trieu t i n , chiem 19,5% tong trii' lu-ong danh gia De khai thac phan tru- lu-ong nay, nhu'ng nam vu-a qua, Cong ty da trien khai ap dgng he thong khai thac 16 dpc via phan tang hay 16 chp- chia 16-p ngang nghieng, chong giugu-ong khai thac bang vi chong thuy lu-c, khau than bang khoan no min, su- dung kip vi sai di?n Ket qua ap dung cho thay, cong suat khai thac va mu-c dp an toan tang len dang ke, dong th6'i giam ton that than Tuy nhien, viec no su' dung kip dien, cong tac d i u noi mang no phLPC tap, mat nhi^u thoi gian, de bo sot 16 min; dp ben day dan dien cua kip thap nen hay xay hien tu-gng dCpt day, d i n den su- co cam; tien dp n6 ngan (< 3,5m); v.v Do chu'a nang cao d y g c chieu TS TRU'aNG DISC DU" TS DAO H N G Q U A N G KS LE QUANG PHyC Vi^n Khoa hgc Cong nghe Mo - Vinacomin cao phan tang khai thac, lam tang chi phi met 16 chuan bj d i n den nang suat lao dpng, san lu'dng va hi$u qua khai thac khong cao Trong cac so cong nghe nay, de nang cao san lu-gng, can thiet phai nang cao chieu cao phan tang khai thac va thu-c hien no cac 16 khoan dai Dieu se khong thyc hien du-oc si> dung kip di$n Tuy nhien, n§u si> dung kip vi sai phi di?n se khac^phuc du-p-c nhOng nhu-p-c diem cua kip dien, do, viec nghien CLFU che tao kip no vi sai phi dien an toan ham 16 nham dap Cpng du-p-c cac yeu cau tren la r i t cip thiet Trong dieu ki$n do, tu- nam 2010, Vi?n Khoa hpc C6ng nghp Mo da de x u l t va du'p-c Bp C6ng Thu'o-ng giao thyc hipn de tai: "Nghien ci>u ap dgng c6ng nghp khai thac va Thu6c goi nS (azotua chi PVA) dao 16 si> dung kip no vi sai phi dien ph6ng no che tao nu-o-c" va Tap doan Cong nghiep Than Khoang san Viet Nam (Vinacomin) giao nhiem vg "Nghien cu-u san x u l t kip no vi sai phi dien an toan ham 16 va ap dgng thu- nghiem cong nghe n6 lo khoan dai 6cac mo ham 16 vung Quang Ninh" (Hp-p dong nghjen CLFU khoa hoc va phat triln cong nghe so 24/2010/HD-KHCNKC.01.DD/09-10-15 02 thang nam 2011) De thu-c hipn cac nhipm vu tren, Vien KHCN Mo da phoi hp-p voi Cong ty TNHH MTV Hoa chat 21 (Bp Quoc ph6ng) chd tao cong kip no vi sai phi dien an toan ham 16 Kip vi sai phi dien an toan ham 16 c6 c l u tao gom thuoc chay cham, thuoc khoi no du-p-c djnh vj vo hinh trg bang kim loai Toan bp phan ong IV16C chO J Thu6c chSy cham te)=^ pay d i n tin hiSu t\6 Hinh Cau tao kip vi sai phi dien an toan ham Id KHCNM S6 2/2012* CNKT HAM LO Thong tin khoa hpc cong nghe mo kim logi da nh6i thu6c du-p-c g i n vo-i mpt day d i n tin hipu n6 thong qua mpt nut cao su va du-p-c kpp ch$t blng dgng cg chuydn dgng Day d i n tin hipu n6 Id mOt 6ng nhya t6ng hp-p, m|it du-p-c phu io-p bOt hogt tinh (chit n6 Trimetrilen) vo-i mgt dp trang tu' 11 -f 13 mg/m Khi du-p-c kich n6, I6p chit n6 b6n trpng day d i n tin hieu no se boc chay rit nhanh tgo mpt tuyin iCea 6n djnh co t6c dp tu- 1600 ^ 2000 m/s d i n kh6i thu6c kho-i n6 kip va kich n6 n6 Hipn tu-p-ng mang tinh chit s6ng tu-o-ng ty nhu- hipn tu'p-ng n6 bgi c6 t h i truyin lan day d i n qua cac ch6 u6n, ch6 gap, nut thit, bupc Qud trinh n6 a day d i n du'p-c tri bd'i mpt lu-p-ng rit nho bpt hoat tinh nen phia ngoai cua day g i n nhu- du-p-c giunguyen Mpt d i u cua day dan tin hieu no du-p-c kep chgt vao kip no, D I U du-p-c bjt kin de tranh ho-i I m tham nhap vao va g i n vo-i m6c J, the ghi th6'i gian vi sai M6c chu- J co tac dgng de noi hp thong day d i n tin hipu n l vo-i day no mu6n kit hp-p hai hp thing kho-i no vo-i Dgc tinh ky thugt cua kip n l vi sai phi dipn an toan h i m 16 du-p-c gio-i thipu bang Qua trinh kiem dinh va thCp nghipm kip n l vi sai phi dipn an tpan him 16 du-gc thyc hipn theo phu-o-ng phap thunghipm thulc n l , kip vi sai dien cua Nhat Ban JIS K 4821-1971; tieu chuin 61NIRE s l 349, 350, 356, cua Nhat Ban quy djnh ve thi> nghiem an toan cho day n l , ngoi n l moi tryo-ng Bing D$c tinh ky thu$t cua kip vl sai phi dien an toim ham Id TT Thdng s6 ky thu$t 1 II Ddy din tin hi^u n l Ou'd-ng kinh ngocii Tic (30 din n l DO bin k6o cua dSy Chilu ddi day Mdu sic ddy Mdu sic nhSn kip vd m6c chO- J Kip n l V$t li$u Idm vo kip Chilu ddi v6 kip Du-O-ng kinh ngodi kip Cu'6'ng dO n l DO bin mli gh6p mi^ng Kha nSng chju nu-O-c s l kip vl sai ThO-i gian vi sai n l ; tieu chuin PN-92/C-86015 cua Ba Lan "Thu- nghipm dp an toan cua thulc n l d i i v6-i metan"; phu-ong phap thu' nghipm kip vi sai dipn su- dgng m6i tru'6'ng co va bgi n l theo TCVN 7460:2005; cac TCVN 6630:2000 va TCVN 631:2000 ve yeu c l u va thunghipm cho kip vi sai phi dipn Sau c h l tgc, kilm tra cac tinh n^ng va thCp n l cong kip vi sai phi dipn an toan, Vipn KHCN Mo v^ Cong ty TNHH MTV H6a chit 21 da tiln hanh kilm tra kha nang n l an toan cua day d i n tin hipu n l , kip vi sai phi dipn an toan trpng moi tru-o-ng metan cc nlng dp (9 ± 0,3)% Day d i n tin hipu n l du-gc thuhai iln, iln thi> nhlt buing thu- nhilu ngSn, iln thi> hai buIng thu- mpt ngan Kip vi sai phi dien du-gc thu' hai lan buIng thi> mpt ngan Cac cong viec tren du'gc tien hanh tai Trung tam An toan Mo Vien KHCN Mo Kit qua thu- nghipm cho thly KHCNM s o 2/2012* CNKT HAM LO Dvn vi Th so mm m/s KG m 3,0 >1700 S25 2-r300 Ghi chu Do Da cam Oing mo mm mm KG giO' ms 52-r62 max 7,1 sis 2,0 10 25 H- 400 kip n l vi sai phi dien an toan h i m 16 da dam bao du-gc kha nang n l an toan moi tru'6'ng co n l va du'gc Bo Cong Thu-ong hu-o-ng din triln khai thu-c hipn theo Cong van s l 4022/BCT-KHCN 06 thang nam 2011, c i n tilp tgc nghien cu-u thunghipm, danh gia va du-a san pham cong nghipp thong qua vipe che tgo va ap dgng thu- nghipm kip n l vi sai phi dipn tgi cac mo him 16 De triln khai ap dgng thunghipm dieu kipn thyc t l , Vipn KHCN Mo va Cong ty than D i n g Vong phii hgp lap phu-o-ng an thyc hipn ap dung thi> nghipm kip n l vi sai phi dipn an toan h i m 16 sod l cong nghe khai thac 16 dpc via phan tang Oia dilm lya chpn ap dgng thu- nghipm la 16 dpc via phan tang mtpc +80 via khu Dong Vang Danh Khu vyc CO dac dilm chilu day via tu- 3,1 ^ 3,5m, trung binh 3,4m; goc d i e via ty 50° - 65°, trung binh 58°; chieu Thong tin khoa hoc cong nghe mo dai phan tang khai thac 134m; chieu cao phan tang khai thac 10m; trpng lu'gng t h i tich cua than, Y = 1,63T/m^ dp kien c l cua than, / = -^ 2; vach tryc tilp la cac 16-p set kit xen l i n bpt kit, chieu day vach tryc tilp thay d i i tCf 6-^^1 Im, cu-6-ng dp khang nen trung binh 5n = 613kG/cm^, trpng lu-gng t h i tich Y = 2,65g/cm^ vach coban la 16-p bpt k i t xen l i n cat kit, chieu day ^ 12^20m, cu'6-ng dp khang nen 5n = 1150kG/cm^ trpng lu'gng t h i tich Y = 2,65g/cm^ trg tryc tilp la 16-p bpt k i t c l u tao phan 16'p day So- d l vj tri ap dgng thi> nghipm du-gc t h i hipn tren hinh cong nghp khai thac 16 dpc via phan tang vo-i chilu dai theo phu'o-ng mli cpt khai thac tCr 120 H- 160m Chilu cao m l i phan ting khai thac la 10 m Cac 16 dpc via phan tang du-gc chuin bj tu-ng cgp, tu-o-ng O'ng tu- tren xuing theo chilu die via - Cong tac khai thac: Ou'gc thyc hipn theo trinh ty tu-ng phan tang mpt, theo hu'6'ng khlu dgt tu' bien gioi cua khu vyc v l phia thu-gng nii mi>c +60 - +100, khai thac ding tho-i 6- hai phan ting nii tilp nhau, phan tang tren tien tru-o-c phan ting du'6-i, vo-i khoang vu'gt tru-o-c phai dam bao khong nho ho-n 20 m Trong m l i phan ting, cong tac khai thac bao gIm: di chuyin gia chlng giij- gu-o-ng khai thac; khoan n l tran Cong nghp khai thac cg t h i nhu-sau: - Cong tac chuin bi: Khu vu-c du-o-c chuin bi theo so- d l than noc; thu hii than noc; van chuyin than thu hii va cat c l u mang cao kit thuc chu ky khai thac Vipe tran than du'gc thyc hipn kit hgp giiia kha nang ty sgp d l eua tran than va khoan n l vo-i cac 16 khoan dai hinh re quat c6 du'6'ng kinh 042 mm du'gc khoan bang may khoan thuy lye VPS-01 CO cpt d i n hu'o-ng tu- 16 dpc via phan tang tai duoi gia XDY ve phia pha hoa theo tiln dp khai thac cua 16 chg (1,5 m/chu ky), chieu dai va g6c nghieng eac l l khoan theo hp chieu quy djnh Cong tac nap, n l tran than n6e su' dung kip n l vi sai phi dipn an toan ham 16 du-gc thyc hipn theo quy trinh sau: + Cong tac chuin bj: Kiem tra Igi s l lu-gng vat lieu n l , phu-ong tien n l , bua, dung tJHiaa' KT>.«U Ttrgo L6 doc -ia phan I4t^ tiuc 60 36-C2-3.X2 Lo doc ^ phan tir^ mjc 70 3S "400 Lo df kj|r> d » rang ^ ::::z Loai.4^ dn r v v run Lodoc laphah lingmjc flO L6 (Joe via phantAng mK 90 / n'mi Hinh So- dwcyng Id khu vgc ap dung thu' nghiem kip no vi sai phi dien an toan ham Id tai via 7, khu Ddng Vang Danh KHCNM SO 2/2012* CNKT HAM LO Thong tin khoa hoc cong nghe mo eu ngp theo hp chilu da du-gc phe duyet; kilm tra, cung c l eac vi chlng tgi vj tri n l min; kilm tra clt dipn cac thilt bi 6- khu vyc n l min; do, kilm tra nlng dp tgi vi tri n l va lan cgn, nlu gio-i hgn an toan m6-i du-gc phep ngp, n l Trong qua trinh ngp, n l min, c h l dp thong gi6 du'gc I tri lien tgc; b l tri ngu'6-i gdc 6- t i t ca eac du'6-ng 16 d i n vao vi tri n l theo hp chilu quy dinh + Lam thoi thudc n l mdi (cho kip vao thoi thudc): Cong tac lam thulc mli du-gc thyc hipn tru-o-c lue ngp va chf lam du s l lu-gng ein thilt theo hp chieu khoan n l va du'gc thye hipn tgi eae vi tri an toan theo quy djnh; ehpn thoi thulc lam mli, boc vo diu bao thulc, dung que (bang g l c6 du-6-ng kinh tu- 08 -H 10mm) dui mpt 16 theo du'6-ng trgc bao thulc (chieu sau khoang 1/2 chieu dai bao thulc), sau d6 rut que nhp nhang khoi thoi thulc de lo khong bi vo-; ngp kip vao 16 vu-a tao tren thoi thulc, cho chieu dai kip nam hit 16, sau d6 dung bang dinh c l djnh mpt phan day d i n tin hieu n l dpc theo chieu dai thoi thulc Qua trinh thao tac ngp kip phai nhp nhang, khong b6p hoae I n mgnh + Nap vac Id khoan: Ngp iln lu-gt eho cac 16 tuvaeh sang trg hoae ngu-gc Igi Su- dgng gay ngp thulc bang Ing nhya PVC (du-d-ng kinh 027mm), dai 1,5m va nii Ing ngp cho cac 16 khoan dai Nap dogn thulc n l thunhlt: dat thoi thulc mli vao mieng 16 khpan cho nggp sau hit chieu dai thoi thulc, dau c6 kip du'a vdo tru'dc, day kip hu'o-ng ngoai, tilp d i n la cae thoi thulc khong e6 kip, sau d6 lip bO phdn djnh vi, giu- cho dogn thulc n l kh6ng bi troi ngodi theo goc die cua l l khoan, sau d6 dung gay diy nhp bp phgn djnh vj eung voi dogn thulc vao day 16 khoan, qua trinh thye hipn, mpt tay elm gay ngp diy nhp bp phgn djnh vj thulc vd dogn thulc n l , tay edn lai cam day din tin hipu n l cua kip, du-a theo t i c dp tiln cua dogn thulc n l cho day d i n tin hipu n l phai thing, khong qua cang hoae qud ehung Sau ngp hit chieu ddi mpt dogn gay ngp min, nii dogn gay tilp theo de diy dogn thulc v l phia day 16 khoan thi diing Igi d l chuan bj ngp bua phan dogn thii- nhlt Ngp bua phan dogn thunhlt: tgo bua, du-a tu-ng thoi bua vdo mieng 16 khoan, dam bao chieu ddi theo quy djnh, lip bp phgn djnh vj bua, dung gay ngp diy bua vdo sat thulc n l thLP nhlt 16 khoan Bua phai ngp chat vd e6 chieu ddi dam bao t i i thilu 1,2m Khi ngp bua nut 16 phai ggt day din tin hipu n l sang mpt ben vd giO eho thing day, trdnh Idm gap, xoln day Khi ngp xong bua phan dogn thLF nhlt, tiln hdnh ngp vd bua phan dogn tilp theo, vo-i trinh ty vd thao tdc tu-o-ng ty nhu- ngp va bua phan doan thiP nhlt Ngp cho ede 16 tiep theo du'gc thyc hien tuo-ng ty nhu- tren + D I U ndi mang n l : mgng n l SLP dung kip vi sai phi dien an toan him 16 la mgng d i u chum, cae d i u day d i n tin hipu n l tu- 16 du-gc c l djnh vo-i kip kich n l 6- KHCNM SO 2/2012* CNKT HAM LO mpt 16 khoan (L = 0,6 -^ 1,0m) (kip kich n l eo t h i Id kip vi sai dipn an toan hoge vi sai phi dipn an toan) Trinh ty d i u n i i mgng nl,_bao gIm kilm tra cae day d i n tin hipu n l cua cdc kip 16 sau d6 bo thdnh tiing chum bang bang dinh, mli chum gIm day d i n tin hipu n l , vj tri b6 each d i u day e6 moc chii J tu- 200 ^ 300mm; b6 c l djnh chum day d i n tin hipu n l tren voi kip kieh n l , sau du'a todn bp kip kich n l , chum day d i n tin hipu n l viia du-gc e l djnh vdo 16 khoan vd ngp bua chic chin Tu-o-ng ty nhu- vgy d i i v6-i cae chum day edn Igi; d i u day din dipn cua kip dien vao day din chinh cua mgng n l , hai diu day d i n ehinh phia nguin dipn phai d i u chap vo-i nhau; euli cung kiem tra Igi todn bp mgng n l , trai day d i n ehinh dpe theo hdng 16 vj tri an todn theo hp chieu quy djnh ^ + Khd'i nd: Tru-o-c kho-i n l phai kiem tra nlng dp metan, neu dam bao an todn thi phdt tin hipu kho-i n l , sau thdo nut xoln hai d i u day d i n chinh, d i u vao hai cyc eua may n l va bim nut kho-i n l eho bai Sau n l , tien hanh thong gid tich eye, dam bao an toan mai thu hii day chinh vd kilm tra bai Nlu c6 cam phai xu- ly tru-o-c eho ngu'6-i vao lam viec Cac kit qua tinh toan cho thly, viec ap dgng thu- nghiem kip n l vi sai phi dien an toan him 16 so- d l cong nghe khai thac 16 dpc via phan tang dieu kipn vfa khu Dpng Vang Danh miPC +60 -^ +100 la phu hgp va hipu qua Cae chi tieu kinh te ky thuat cua 16 Thong tin khoa hpc cong nghe mo TOD MAT CAT A-A m gao