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 Q U A N G
KS. LE QUANG PHyC
Vi^n Khoa hgc Cong nghe Mo - Vinacomin 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 cao phan tang khai thac, lam dao 16 si> dung kip no vi sai danh gia, tru' lu-ong cac via tang chi phi met 16 chuan bj phi dien ph6ng no che tao than do Cong ty than Dong d i n den nang suat lao dpng, trong nu-o-c" va Tap doan Vong quan ly va khai thac cho san lu'dng va hi$u qua khai
thay, phan trCp lu-ong phan bo thac khong cao. Trong cac so trong cac khu vu-c via c6 chieu do cong nghe nay, de nang day tu- trung binh den day, cao san lu-gng, can thiet phai nang cao chieu cao phan tang khai thac va thu-c hien no min trong cac 16 khoan dai. Dieu nay se khong thyc hien du-oc khi si> dung kip di$n. Tuy nhien, n§u si> dung kip vi sai goc doc ^ 45° khoang 5 trieu
t i n , chiem 19,5% trong tong trii' lu-ong danh gia. De khai thac phan tru- lu-ong nay, trong nhu'ng nam vu-a qua, Cong ty da trien khai ap dgng
he thong khai thac 16 dpc via phi di?n se khac^phuc du-p-c phan tang hay 16 chp- chia 16-p nhOng nhu-p-c diem cua kip ngang nghieng, chong giu-
gu-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, trong viec no min 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 ra hien tu-gng dCpt day, d i n den su- co min cam; tien dp n6 ngan (< 3,5m); v.v... Do do chu'a nang cao d y g c chieu
dien, do 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$n do, tu- nam 2010, Vi?n Khoa hpc C6ng nghp Mo da de x u l t va du'p-c Bp C6ng Thu'o-ng giao thyc hipn de tai: "Nghien ci>u ap dgng c6ng nghp khai thac va
Cong nghiep Than Khoang san Viet Nam (Vinacomin) giao nhiem vg "Nghien cu-u san x u l t kip no min vi sai phi dien an toan ham 16 va ap dgng thu- nghiem trong cong nghe n6 min lo khoan dai 6- cac mo ham 16 vung Quang Ninh" (Hp-p dong nghjen CLFU
khoa hoc va phat triln cong nghe so 24/2010/HD-KHCN- KC.01.DD/09-10-15 ngay 02 thang 4 nam 2011). De thu-c hipn cac nhipm vu tren, Vien KHCN Mo da phoi hp-p voi Cong ty TNHH MTV Hoa chat 21 (Bp Quoc ph6ng) chd tao thanh cong kip no min vi sai phi dien an toan ham 16. Kip vi sai phi dien an toan ham 16 c6 c l u tao gom thuoc chay cham, thuoc khoi no du-p-c djnh vj trong vo hinh trg bang kim loai. Toan bp phan ong
Thu6c goi nS
(azotua chi PVA) Thu6c chSy cham
IV16C chO J
te)=^
pay d i n tin hiSu t\6
Hinh 1. Cau tao kip vi sai phi dien an toan ham Id
KHCNM S6 2/2012* CNKT HAM LO
Thong tin khoa hpc cong nghe m o
kim logi da nh6i thu6c du-p-c g i n vo-i mpt day d i n tin hipu n6 thong qua mpt nut cao su va du-p-c kpp ch$t blng dgng cg chuydn dgng
Day d i n tin hipu n6 Id mOt 6ng nhya t6ng hp-p, m|it trong 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 thanh mpt tuyin iCea 6n djnh co t6c dp tu- 1600 ^ 2000 m/s d i n kh6i thu6c kho-i n6 trong kip va kich n6 n6. Hipn tu-p-ng mang tinh chit s6ng nay tu-o-ng ty nhu- hipn tu'p-ng n6 bgi c6 t h i truyin lan trong day d i n qua cac ch6 u6n, ch6 gap, nut thit, bupc. Qud trinh n6 a trong day d i n du'p-c duy tri bd'i mpt lu-p-ng rit nho bpt hoat tinh nen phia ngoai cua day g i n nhu- du-p-c giu- nguyen. Mpt d i u cua day dan tin hieu no du-p-c kep chgt vao kip no, D I U kia 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 khi mu6n kit hp-p hai hp thing kho-i no nay vo-i nhau.
Dgc tinh ky thugt cua kip n l vi sai phi dipn an toan h i m 16 du-p-c gio-i thipu trong bang 1.
Qua trinh kiem dinh va thCp nghipm kip n l vi sai phi dipn an tpan h i m 16 du-gc thyc hipn theo phu-o-ng phap thu- nghipm thulc n l , kip vi sai dien cua Nhat Ban JIS K 4821-1971; tieu chuin 6 1 - NIRE s l 349, 350, 356, cua Nhat Ban quy djnh ve thi>
nghiem an toan cho day n l , ngoi n l trong moi tryo-ng khi
Bing 1. D$c tinh ky thu$t cua kip vl sai phi dien an toim ham Id TT
1 1 2 3 4 5 6 II 1 2 3 4 5 6 7 8
Thdng s6 ky thu$t Ddy din tin hi^u n l Ou'd-ng kinh ngocii T i c (30 d i n n l DO b i n k6o cua dSy Chilu ddi day Mdu sic ddy
Mdu sic nhSn kip vd m6c chO- J Kip n l
V$t li$u Idm vo kip Chilu ddi v6 kip Du-O-ng kinh ngodi kip Cu'6'ng dO n l
DO b i n mli gh6p mi^ng Kha nSng chju nu-O-c s l kip vl sai
ThO-i gian vi sai
Dvn vi mm m/s KG m
mm mm KG giO' ms
Th so 3,0
>1700 S25 2-r300
52-r62 max 7,1
s i s 2,0 8 10 25 H- 400
Ghi chu
Do Da cam Oing mo
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 khi metan"; phu-ong phap thu' nghipm kip vi sai dipn su- dgng trong m6i tru'6'ng co khi va bgi n l theo TCVN 7460:2005; cac TCVN 6630:2000 va TCVN 631:2000 ve yeu c l u va thu- nghipm cho kip vi sai phi dipn.
Sau khi c h l tgc, kilm tra cac tinh n^ng va thCp n l thanh 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 khi metan cc nlng dp (9 ± 0,3)%.
Day d i n tin hipu n l du-gc thu- hai iln, i l n thi> nhlt trong buing thu- nhilu ngSn, i l n thi>
hai trong buIng thu- mpt ngan.
Kip vi sai phi dien du-gc thu' hai lan trong buIng thi> mpt ngan. Cac cong viec tren du'gc tien hanh tai Trung tam An toan Mo Vien KHCN Mo.
K i t qua thu- nghipm cho thly
kip n l min vi sai phi dien an toan h i m 16 da dam bao du-gc kha nang n l an toan trong moi tru'6'ng co khi 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 ngay 06 thang 5 nam 2011, trong do c i n t i l p tgc nghien cu-u thu- nghipm, danh gia va du-a thanh 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 thu- nghipm trong 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 trong so- d 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 7. 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, / = 1 -^ 2; vach tryc tilp la cac 16-p set k i t 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 co- ban 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 2.
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
cong nghp khai thac 16 dpc via phan tang vo-i chilu dai theo phu'o-ng m l i 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 thanh 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 min ha tran
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 ha tran than du'gc thyc hipn kit hgp giiia kha nang ty sgp d l eua tran than va khoan n l min 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 min ha 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
3S
"400
t J H i a a '
KT>.«U Ttrgo
Lo df kj|r> d » rang ^ : : : : z Loai.4^ dn r v v run
L6 doc .-ia phan I4t^ tiuc .60 Lo doc . ^ phan tir^ mjc .70 Lodoc .laphah lingmjc .flO L6 (Joe via phantAng mK .90
/
36-C2-3.X2
n'mi
Hinh 2. So- do 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 min 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- trong khu vyc n l min; do, kilm tra nlng dp khi tgi vi tri n l min va lan cgn, nlu trong gio-i hgn an toan m6-i du-gc phep ngp, n l min.
Trong qua trinh ngp, n l min, c h l dp thong gi6 du'gc duy I tri lien tgc; b l tri ngu'6-i gdc min 6- t i t ca eac du'6-ng 16 d i n vao vi tri n l min theo hp chilu quy dinh.
+ Lam thoi thudc n l mdi (cho kip vao thoi thudc):
Cong tac lam thulc m l i du-gc thyc hipn tru-o-c lue ngp min va chf lam du s l lu-gng ein thilt theo hp chieu khoan n l min va du'gc thye hipn tgi eae vi tri an toan theo quy djnh;
ehpn thoi thulc lam min m l i , boc vo d i u bao thulc, dung que (bang g l c6 du-6-ng kinh tu- 0 8 -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, sao cho chieu dai kip nam hit trong 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 min vac Id khoan:
Ngp min i l n lu-gt eho cac 16 tu- vaeh sang trg hoae ngu-gc Igi.
Su- dgng gay ngp thulc bang Ing nhya PVC (du-d-ng kinh 027mm), dai 1,5m va n i i Ing khi ngp min cho cac 16 khoan dai. Nap dogn thulc n l thu- nhlt: dat thoi thulc m l i 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 ra ngoai, tilp d i n la cae thoi thulc khong e6 kip, sau d6 l i p bO phdn djnh vi, giu- cho dogn thulc n l kh6ng bi troi ra ngodi theo goc d i e cua l l khoan, sau d6 dung gay diy nhp bp phgn djnh vj eung voi dogn thulc vao day 16 khoan, trong qua trinh thye hipn, mpt tay elm gay ngp min diy nhp bp phgn djnh vj thulc vd dogn thulc n l , tay edn lai cam day d i n tin hipu n l cua kip, du-a theo t i c dp tiln cua dogn thulc n l sao cho day d i n tin hipu n l phai thing, khong qua cang hoae qud ehung. Sau khi ngp hit chieu ddi mpt dogn gay ngp min, nii dogn gay tilp theo de d i y 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 thu- nhlt: 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 min diy bua vdo sat thulc n l thLP nhlt trong 16 khoan. Bua phai ngp chat vd e6 chieu ddi dam bao t i i thilu 1,2m. Khi ngp bua nut 16 min phai ggt day d i n 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 min vd bua phan dogn tilp theo, vo-i trinh ty vd thao tdc tu-o-ng ty nhu- ngp min va bua phan doan thiP nhlt. Ngp min 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 min du-gc c l djnh vo-i kip kich n l 6- trong
mpt 16 khoan con (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 trong 16 min sau d6 bo thdnh tiing chum bang bang dinh, m l i chum gIm 6 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 do du'a todn bp kip kich n l , chum day d i n tin hipu n l viia du-gc e l djnh vdo trong 16 khoan con 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 d i u 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 ra vj tri an todn theo hp chieu quy djnh.
^ + Khd'i nd: Tru-o-c khi kho-i n l phai kiem tra nlng dp khi metan, neu dam bao an todn thi phdt tin hipu kho-i n l , sau do thdo nut xoln hai d i u day d i n chinh, d i u vao hai cyc eua may n l min va b i m nut kho-i n l eho bai min.
Sau khi min n l , tien hanh thong gid tich eye, do khi dam bao an toan mai thu hii day chinh vd kilm tra bai min. Nlu c6 min cam phai xu- ly tru-o-c khi eho ngu'6-i vao lam viec.
Cac k i t qua tinh toan cho thly, viec ap dgng thu- nghiem kip n l vi sai phi dien an toan h i m 16 trong so- d l cong nghe khai thac 16 dpc via phan tang trong dieu kipn vfa 7 khu Dpng Vang Danh miPC +60 -^ +100 la phu hgp va hipu qua. Cae chi tieu kinh te ky thuat cua 16
MAT CAT A-A
Thong tin khoa hpc cong nghe mo
TOD
m gao <HD 3B
•X^'A
—rm^i'-"-
l.lyifnliiilniii) Efl
a. So- cf6 c6ng ng/7# khai th^c b. Bd ph$n dinh vi thuoc trong Id khoan, day nd, mdy no min phii dien vd cSu true id min Hinh 3. So' do cdng nghe khai thac Id dgc via phan tang, no min trong cac lo khoan dai sir dung kip
no vi sai phi dien an toan ham Id
Bang 2. Chi tieu kinh te - ky thuat cua cdng nghe chg dat ket qua tot, no min vd
nang suit lao dpng cao hon so vd'i n l min sii dgng kip dipn thong thu-d-ng (bang 2).
Phu-o-ng an dp dgng thii nghipm da du-gc Tap dodn Cong nghiep Than - Khoang san Viet Nam phe duyet tgi Cong van s l 22/TTDHSX- KCM ngdy 13 thdng 01 nam 2012 "Ap dung kip n l min vi sai phi dipn an todn h i m 16 trong so- d l cdng nghp khai thac 16 dpc via phan ting tgi Cong ty TNHH MTV than Ding Vong - C6ng ty TNHH MTV than Uong Bi - Vinacomin'' Thye hien ehi dgo tgi Cong van tren, Vipn KHCN Mo vd Cong ty than Ding Vong dy kiln du-a vao dp dung thu-
nghipm trong thang 2 nam hoae ho-n), dam bao tan thu 2012. Ket qua thu- nghipm se nguIn tai nguyen hipu qua./.
TT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Ten chi tieu Chieu day via trung binh Goc die via trung binh
Chilu cao nghieng phan tang khai thac Chieu cao nghieng lap than ha tran Tien do chu ky
San lu-gng khai thac mOt ngay dem (1 phan tang)
San lu-gng khai thac 1 thang Cong suit khai thac
Nhan lu-c khai thac 1 ngay dem Nang suat lao dong cong nhan 16 chg Chi phi thuoc n l cho 1000 T
Chi phf kip n i c h o 1000T Chi phi lu-ai thep cho 1000 T Chi phi met 16 chuan bi cho 1000 T Chi phi m6t khoan cho 1000T T i n that cong nghe
Do'n vj m dp m m m T/ng-d T/thang T/nam Ngu-oi T/c6ng
Kg Kip Kg m m
%
So lu^yng 3,4
58 11,8 8,85 3 108 2,700 29.000
30 3,6 72,7 145,5 423,6 23,1
509 25,3
Id CO so- de danh gid va dieu ehmh vipe c h l tgo kip n l vi sai phi dipn an toan him 16 phu hgp, dam bao nang cao hipu qua, an toan trong khai thac va nham so-m du'a vao dp dung rpng rai tgi cac md trong thd-i gian tdi, ding thd-i xem xet nang cao hon nOa chieu eao
Tai lieu tham khao
1. TS. Nguyen Anh Tuan, de tai "Nghien ciru ap dung giai phap no min trong lo khoan dai khi khai thac via day doc vung Quang Ninh" Vien KHCN Md. 2011.
2. PGS.TS. Phung Manh Dac, de tai: "Nghien ciru ap phan ting khai thac (den 20m dung cong nghg khai thac va
dao Id sd dung kip vl sai phi dien phong no che tao trong nirdc" Vien KHCN Mo. 2010.
3. Phwong an "Khai thac ap dung thd nghiem kip no vi sai phi dien an toan ham Id trong sa do cong nghe khai thac Id doc via phan tang tai Cong ty TNHH MTV than Dong Vong Cong ty than Uong Bl Vinacomin' Vien KHCN Mo.
2011.
KHCNM SO 2/2012* CNKT HAM LO
