Thong tin khoa hpc cdng nghp m d
w
\Mmm ciiu AP DUNG CONG NGHE ca Gion HOA KHAI THAC VIA MONG DEN DAY TRUNG BJNH, DOC THOAI DEN NGHIENG 161 MO NG6 Hfii. CONG n r i H f i N QUfiNG HfiNM
At present, the investment project for coal mining mechanization at Nga Hai coal mine has been verified by Quang Hanh Coal Company and submitted to Vinacomin The application of the coal mining mechanization at Nga Hai area has been carried out at the longwall within the pilot scale with the coal seams having high dip angle and variable thickness. The results from this pilot application will be the basis for widely applying the coal mining mechanization to the complicated conditions
TS TRycNG Dire oy
TS. B A O H O N G Q U A N G ThS. OINH V A N CyOfNG Vien Khoa hoc Cdng nghe Md - Vinacomin
ThS. BUI DiNH THANH ThS. NGUYEN HAI TRUNG KS. NGUYEN NGQC QUYNH Cong ty than Quang Hanh - TKV Bien tap: TS. Trwong DCrc Dw Khoang sang than Nga Hai do Cfing ty than
Quang Hanh quan ly duge x l p vdo nhfim mo phirc tpp loai ill, gom 35 via than, trong dfi 30 via cfi gid trj cfing nghipp. Phin trir lugng tir mire -50 d i n 16 via ve ca ban da dugc khai thdc g i n hit. Hipn nay, Cong ty dang tiln hanh dao lfi chuin bi vd khai thdc phin trCr lugng mirc -50/-300 theo thilt k l ky thugt "Dy an khai thde xuing sau dual mirc -50 mo than Nga Hai" do Cfing ty Co p h i n Tu v i n O l u t u Mo vd Cfing nghipp lap. So lugng via than dugc huy dOng vao dy an gom 10 via (via 16, 15, 14,13, 11,10, 7, 6,6a, 5), vo'i t i n g trir lugng khoang 47,9 tripu t i n . Trong dfi, trij- lugng t i n g -50 -^ -175 khodng 22,6 tripu t i n dd hodn thanh cfing tdc khai thfing vd dang dugc khai thdc dam bao duy tri san lugng mo d i n nam 2027. Phin tris lugng ting - 175 ^ -300 khoang 25,3 tnpu tan se dugc khai thfing huy dOng vdo khai thdc giai dogn sau nam 2027, khi da k i t thuc cfing tdc khoan tham dfi bo sung d l nang cao mirc dp tin cgy eiia tdi lieu dja chit.
Danh gia cho thiy, trong tong so 22,6 tripu t i n tru lugng cua t i n g -50/-175 neu trdn, trir lugng cdc via than mong den day tnjng binh, thoai d i n nghieng khoang 15,8 tneu tan, ehiem tttyi 70% ting tru lugng. Hipn tgi, d l khai thae d i i tugng via ndy, Cong ty than Quang Hanh chu y l u dp dyng cong nghp khai thac cpt ddi theo phuang, khiu than bang khoan n l min, ching giu lfi chg bing cpt thuy lyc dan - xd kho'p, vd m|t s i vj tri bing gid thuy lyc di dpng. Thye t l
dp dyng cac logi hinh cfing nghd ndy tgi Cong ty cho k i t qua nhu sau: cfing suit va nang suit khai thae ehi dat khoang 70 ^ 90 ngdn tIn/nam, 2,2-^ 3,5 tin/eong d i i vo'i cdc lfi chg thiiy lye dan, ttr 80 ^ 100 ngdn tIn/nam, 3,0 -^ 4,0 tin/cfing d i i vfi-i cdc lfi chg gia thuy lye. Theo k l hoach cua Cfing ty than Quang Hanh da dugc Tgp dodn phe duypt, san lugng than khai thdc h i m 16 sd dgt 1,0 tripu tan nam 2014 va duy tri 0' mire 1,5 tripu t i n k l tir nam 2015. Vd'i hipn trgng cfing nghp dang dp dung, 6^ dam bao k l hogch gia tang vd duy tri san lugng, Cfing ty ehi cfi t h i thue hipn dugc bdng cdeh mo' thdm dipn khai thac md'i (tang tir 10 lfi chg nam 2013 len 12 ^ 13 lfi chg ndm 2014, thgm ehi, nhieu han vdo ndm 2015), dilu ndy dong nghTa vfii vipe phai tang nhanh s i lugng cfing nhdn tuang irng theo ty le tang san lugng mo. Trong khi dfi, v i n de giD' vd tuyen dung mo'i lao dpng him lfi dang la bai toan hit sue khfi khan d i i vfi'i Cong ty than Quang Hanh nfii rieng, Ngdnh than nfii ehung.
Dh giai quylt nhirng khfi khan trdn vd thye hipn chu truang eiia Tap dodn Cfing nghipp Than - Khoang san Vipt Nam v l phat then ben vCrng gan lien vfi'i bao vp mfii trufi-ng theo huang doi mfi-i cfing nghp, triln khai irng dyng cfing nghp tidn tiln trong cac cfing dogn san xuit nham tang nhanh san lugng khai thde him lfi, giam nhan lyc khai thac, tang nang suit lao dpng, giam ton that tai nguyen, dong thfi'i ndng eao mipc dp an toan vd cai thipn dieu kipn lao dpng, Cfing ty than Quang Hanh da d l nghj Vipn
KHCNM S6 10/2014* CNKT HAM L 6
Khoa hpc Cong nghS Mo cung phai hop nghien
w
cilu aanh gia kha nang va lap dLK an dau tir ap dung cong nghe cc gioi hoa khai thac vfa mong den day trung binh phii hop vd'i dieu ki#n cac via than tai khoSng sang Nga Hai do Cong ty quan ly. Ket qua danh gia chi tiSt dac dilm diSu kien aia chat cac via than tang -50/-175 khu mo Nga Hai cho thay, tru lu'p'ng cac khu vyc thoa man yeu cau ap dung cc gioi hoa khai thac la 2.324,6 ngan tan (tap tnjng tai via 6, via 7, via 15 va via 16). Phan Ion tru lu'p'ng tap trung trong miSn chi^u day 1,4 + 2,5m, chiem to'i 72,2% t6ng trii' lupng CO gidi hoa (1.678,8 ngan t§in), phan con lai thupc mien chieu day tir tren 2,5 + 3,5m, chiem 27,8% (636,8 ngan tan). Theo goc d6c, tru' lyong t|ip trung trong mien duoi 20°, chiem 67,2% (1561,1 ngan tan), trir lupng thupc mien goc doc tir tren 20° + 35° la 32,8% (763,5 ngan tan). Chi tiSt CO cau trir lupng cac khu vuc via than CO kha nang co gioi hoa tai mo Nga Hai t h i hien trong bang 1.
Hien nay, de co gioi hoa khai thac cac via than CO dilu kien nhu tren, c6 t h i ap dung mpt so so dp ccng nghe nhu (1) So de ccng nghe khai thac co giai hoa, chong giu' 16 cho bang dan t u hanh, khiu than bSng may bao; (2) So do cong nghe khai thac co gioi hoa dong bo khau than bing may combai, chdng giu-16 chp bang dan ching tu hanh; va (3) So do cong nghp khai thac tu dgng hoa, khau than bang may khau k i t hop dan tu hanh, cac cong viec trong qua trinh khai thac dypc thuc hien t u i n t y theo c h l dp dat san cho cac may tinh dieu khien.
Trong cac so d l cong nghp khai thac co gioi hoa neu tren, so do so 1 thyong chi ap dung phii hop trong dieu kien chieu day via d i n 2,0m, yeu cau mirc dp I n dinh v l chieu day via khat khe, ty le va do kien co ciia da kep trong via phai nho, cong suit khai thac thap hon so vo'i hai so do cdn lai [1,3,6]. Tuang t u nhy so do so 1, so do
so 3 cung doi hoi mii'c dp b i l n dpng via than rat khat khe, ngoai ra, no cdn yeu c i u cao v l trinh dp to chirc va b l day kinh nghiem cua can bp, cong nhan tham gia van hanh 16 cha, chi phi dau t u ban d i u 16'n, va thye t l cong ngh$ nSy cung chi mai dyac ap dung thir nghiem tai mpt so nyac phat triln. Sa 3b s8 2 co yeu cau v l trinh dp tilp nh|n cong nghp cua ngyai thp 6' mii'c dp trung binh, chi phi d i u t y ban d i u khong qua 16'n, mirc dp biln dpng v l chilu day, g6c die via than tir trung binh d i n I n dinh. Can c(t vao d|c dilm dilu kien cac khu vyc via than c6 kha nang ca gioi hoa, trinh dp ky thuat ciing nhy kha nang t i l p nhan cong nghp ciia nguoi tho trong thpi dilm hien tai, Vien Khoa hpc Cpng nghe Mo da lua chpn cong nghe khai thac co gidi hda ding bo khiu than bang may combai, chong giu 16 cha bang dan ching t y hanh (sa do so 2) de ap dung chp cac khu vyc via than d y kiln ap dung ca giai hca trong d i l u kien Cong ty than Quang Hanh. Tuy nhien, cac thong s i chinh cua so do cdng nghe nhu chilu dai 16 cho thep huong die, chilu dai theo phypng khu vuc khai thac, dong bp thilt b| ca gio'i hoa, ... phai dupc lua chpn that ky lud'ng de vira dap irng cac yeu cau v l ky thuit, vira dam bao hipu qua kinh t l cua cong tac dau t y trong thai dilm hipn nay.
Chilu dai 16 cho d y a c chpn phu thupc vao dilu kien dia chit mo. 0 dilu kien dia chat via phirc tgp, vipc ap dung khai thac ca gioi hoa chi nen ap dung cr dang gyang 16 cho ngan. Tai cac mo Nam M l u va Khe Cham, chilu dai 16 chp co giai hoa khoang 80 + 120m la phii hpp voi dilu kien d|a chat ky thuat cac mo va dam bao thuan lpi trong cong tac to chirc san xuit 16 chp. Dieu kipn dia chit ciia khu mo Nga Hai - Cong ty than Quang Hanh phirc tgp (thupc nhom mo phirc tap ioai 111), dac bipt nhilu khu vyc ap dung co goc doc Ion tir tren 20 + 35°, nen chilu dai 16 chp co gio'i hda dupc chpn la 80m, chilu dai theo Bdng 1. Tdng hap trCr luang c6 kha nang ca glai hda tai tdng -50/-175 md Ngd Hai
Gdc doc via (dd)
£20 20,1-35
T i n g Ty 10 (%)
Tru' tircmg huy dgng (ngdn tan) Chidu ddy via (mdt)
1,41 + 2 , 5 1 327,8(57,1%)
351,1 (16,1%) 1 678,8
72,2
2,61 + 2 , 8 0 115,9(5%)
116,9 6,0
2,81 + 3 , 2 0 123,9 (6,3%)
123,9 5,3
3,21 + 3 , 5 233,4(10,0%)
172,5(7,4%) 405,9
17,6
Tong 1 661,10
763,5 2.324,6
100
Ty l« (%) 67,2 32,8 100
KHCNM S6 10/2014* CNKT HAM LO
Thong tin khoa hoc cong nghe mo
phuang khu vye khai thac dugc lua chpn theo kinh nghipm, toi thilu bang 2,5 l i n chieu dai lfi chg theo hufi'ng d i e
Theo kinh nghipm thilt k l cua cac dan vj ehl tgc dan chong, de phu hgp vfi'i khu vuc via than dp dgng, chieu cao nho nhit (min) cua ddn phai thip han toi thilu 0,2m so vai chilu ddy via nho nhit, chilu cao 16'n nhit (max) cua ddn phai Ifi'n han t i i thilu 0,1m so vfi'i ehieu ddy via 16'n nhit trong pham vi do. Theo ea eiu trij lugng cdc khu vue via cfi kha nang ea giai hfia trinh bay tai bang 1, 6e khai thdc mfit l i n h i t chieu day via tir 1,4 ^ 3,5m, ddn chong phai cfi chieu eao min ^ max la 1,2 -5- 3,6m, theo dfi hdnh trinh Ifi'n nhit cua piston cpt ching la 2,4m. Qua tham khao dac tinh ky thugt ciia mpt so loai ddn ching pho biln vd trao doi vfi'i cac ehuyen gia ea khi cua nufi'c ngodi, thfi'i diem hipn nay khfing kha thi ve ky thuat vd kinh t l d l c h l tao dugc logi ddn chong thoa man yeu eau tren. Do dfi, chilu cao nho nhit cua dan dugc c l djnh la 1,2m, chieu cao lan nhit cua dan sd dugc lya chpn sao cho kha nang Idm vipc cua no phii hgp toi da vfi'i dieu kipn cdc khu vyc dp dyng ca gio'i hoa. Cu t h i nhu sau [5,6]:
- N l u phgm vi ehieu day via lya chpn dan ching Id 1,4 -?- 2,5m (1.678,8 ngdn tan, chilm 72,2% tong tru- lugng ca gifi'i hfia), chilu cao tuang irng cua ddn se la 1,2 -^ 2,6m, irng vfi'i miln ching gitr max ^ min 1,4m. Day la mien chong gii> khd pho bien cua cac thilt bj ddn chong dugc san xuit tgi Trung Quic vd mot s i nufi'c khdc tren the gio'i.
- Neu phgm vi chieu ddy via lya chpn dan ching la 1,4 -^ 2,8m, khi dfi mire dp phii hgp cua ddn ching se mo' rpng them 6w(;fc 5% ting tru lugng ca giai hoa (115,9 ngdn tin), ndng ting trO lugng phu hgp eua thilt bj Idn 1.794,7 ngan t i n Trong trufi'ng hgp ndy, ehieu cao tuang irng cua ddn se Id 1,2 - 2,9 (3,0)m, tuang irng vfi'i miln ching giCr max H- min 1,8m. Theo phan tich eiia cac chuyen gia ca khi, vfi'i mien ching giO' ndy, pitston cua cpt dan chong da den gifi'i han hdnh trinh, nen se ddn d i n mpt s i han ehl: (1) Du&ng cong chiu lyc cua cdc tay bien giam di dang k l mirc dp hgp ly; (2) Vi pitston ciia cot ddn ching da den giai hgn hanh trinh, goc nghieng cua cpt ching cOng tang Idn, dan den
hipu suit ching giu se bj giam, nen lyc can lam vipe ciia dan phai tang, tir dfi lam tang trpng lugng dan (vi dy, dan ZY3000-12/26 co khii lugng 11 t i n , trong khi dan ZY3400-12.5/30 c6 khii lugng khoang 14 tan [5, 6]); (3) Vi hdnh trinh piston ciia cot ching tuang dfii lan, ndn xd eiia ddn chong va bat chan cpt ching phai mong, do vdy vat lieu gia cfing phai cfi sire ben cao, d i n d i n gia thanh san xuit phai tang len;
(4) Lyc can lam vipc cua dan tang, dd d l phfing hipn tugng "truang xi lanh" trong qud trinh su dyng, xi lanh cua cpt phai diing vat lieu cfi sire b i n cao han 6e gia cfing, d i n d i n tang gia thdnh.
- Neu pham vi chilu ddy via lua chpn ddn chong la 1,4 ^ trdn 2,8m, tuang irng vai mien chilu cao cua ddn tir 1,2 H- tren 3,0m. Nhu da ndu 0' trdn, sd khfing khd thi v l ky thugt vd kinh t l d l lya chpn duac loai dan chong phti hgp cho d i i tugng via nay.
Tir cac phan tich trdn, trong phgm vi cdc khu vye via cfi kha ndng ca gidi hfia tai mo than Nga Hai, Vipn Khoa hpc Cfing nghp Mo da ehpn mien chieu ddy via mang tinh dai dien tCr 1,4 -^ 2,5m (chiem 72,2% tfing tru lugng) d l lya ehpn dan ching phu hgp, cac mien chilu ddy via cfin Igi se chip nhgn t i n thit mpt phin than fi' nfic hogc n i n 16 chg trong qud trinh khiu.
Kinh nghidm cho t h i y trong cung mdt dilu kipn sir dung, cac loai dan chong cfi xuit sir tCr cae nufi'c Dong Au noi rieng, cdc nufi'c chau Au nfii chung thuo'ng cfi chit lugng tot han, tuy nhien, trpng lugng vd gia thanh Igi cao han so vfi'i ddn ching do Trung Quic san xuit. Trong dieu kien quy mo cong suat xay dyng cho eae 16 chg ca gifi'i hfia tai Cong ty than Quang Hanh khfing Ifin (du kiln khoang 180.000 tan/nam), chat lugng than nguydn khai o" mirc dp trung binh, d l ding th6'i thue hipn chu truang ca gi6'i h6a va dam bao hidu qua cua cong tdc d i u tu, cdc bdn thing nhit su dyng ddn ching tuang duang vfi'i loai dan ZY3000-12/26 do Trung Quoc san xuit.
Khac vfi'i logi dan ching tu hanh da dp dung trufi-c day tai Cfing ty than Khe Cham, ddn chong ZY3000-12/26 dugc c h l tgo d§c bipt vd b l sung mpt s i chi tilt k i t c i u d l cfi t h i Idm vipe I n dinh trong dieu kipn gfic d i e 16 chg len 16*1
KHCNM S6 10/2014* CNKT HAM 1,6
35°, gdc die len xuing thee hypng khau len td'i
±15°, eg the: (1) Cac dan chong trong 16 chp dupc lien k i t vd'i nhau bang he thing xi lanh ching troi (lien k i t d l cac dan ching), ching lat (lien k i t xa cac dan ching), va he thing xich, piston lien k i t dan chong va mang cao de ching troi mang; (2) Be cua d l dan dypc bo sung kich chinh be dan phia ben hdng va kich thang bang phia pha hoa d l tang tinh on dinh cua dan trong dilu kien goc doc Ion. Ngoai ra, de dan cung dyac trang bi kich nang d l xy ly ching lun trong truang hap dan ching bi liin xuing n i n 16 cha;
(3) T i m da guang dypc cai tien thanh dang thd thut thay cho hinh thirc t i m lat kilu ban l l de tang tinh chu dpng trong viec do vach 16 chp trong qua trinh khiu guang, d i n g thai tang dien tich sir dung khong gian phia trpng Idng dan. Chi tilt xem tai hinh 1, bang 2.
Ciing vd'i dan ching, may khau va mang cao la nhirng thilt bi chinh trong dong bp thilt bi le chp ca giai hda. Trong do, may khiu dyac lya
chpn phai dam bap phii hap vd'i dan ching, quy mo cong suat va dac d i l m d i l u kien dja c h i t - ky thugt mo khu vyc ap dung, nhy chilu cao khai thac, dp kien c l ciia than va da kep trong via (neu co), do d i e 16 cha theo phyong va theo hyang doc. Theo hinh thii'c keo dat, may khiu duac chia thanh hai loai la keo d i t bang dien va keo dat bang thuy lyc. Xet v l mat ky thuat don thuin, may khau keo dat bang dien co nhilu iru dilm hon so vol keo dat bang thiiy lyc nhu;,(1) Nang suit cao han; (2) Co the dilu khiln tir xa, tren may trang bi man hinh hiln thi mot s i th6ng s i ky thuit ciia may trong qua trinh lam vipc; (3) Co tram d i l u khiln tia hong ngoai de dieu khien va lap trinh mpt s i thong s i ky thuat don glan cho may. Tuy nhien, no cung ton tgi mpt s6 nhyoc d i l m so vai may khau keo dat bang thiiy lyc la: (1) P h i n d i l u khiln dien phii'c tap, yeu c i u tha sira chira phai co trinh dp ky thuat cao;
(2) Khi lam viec trong 16 chp c6 dO die ldn hon 15° c i n phai co bp khing c h l bien tan d l phanh
H6 thdng chdng Idt ddn ZY014-70 Hd thdng chdng trdi mdng cdo Ddn chdng ZY3000-12/26 vd chdng trdi dan ZY014-71 ZY014-72
Hlnh 1. Ddn chdng ZY3000-12/2e vd cdc kit ciu lidn kit chdng trdi, dd ddn vd mdng cdo Bang 2. Bde tinh ky thudt ciia dan chdng ZY3000/12f26
TT 1 2 3 4 6 6 7 8 9 10 11 12
Thong so ky thuat Hinh thirc d^n chong Chieu cao dan chdng Chieu rdng dan chdng Khoang each tam hai dan chdng Bird'c di chuyen dan 0 0 doc 16 chp cho phep Gdc doc cho phep theo hu'dng khau Ap lyc chong 6a Ifi'n nhat Luc chdng ban d i u Cu'dng dd chong giu' Ap lu'c len de d^n chong Trpng lu'png ddn chong
0O77 vj Dang che c h i n
mm mm mm mm do dd kN kN MPa MPa tan
Khoi Iwgmg
1200 + 2600 1430 + 1600
1500 600 S36°
±16°
3000 2616 0,6 + 0,53
1,16 -11
Ghi chO
P = 36,1 mPa P = 31,5 mPa
KHCNM S6 10/2014" CNKT HAM L 6
Thong tin khoa hoc cong nghe mo
ham, d l ph6ng troi may (may khiu kep dat bing thuy lyc thi dya vao m l men lyc cua m6 to nSn t y ban than co t h i phanh ham); (3) Trong cimg mpt dilu kien cong suit, gia thanh dat gap 2 l i n so vdri mdy khiu keo dat bing thuy lyc; (4) Xet v l dilu kipn dac thil thye t l moi tryd'ng ham 16 Vipt Nam noi chung, Cong ty than Quang Hanh ndi rigng, do dp I m khong khi cao, nen khi sy dgng may khiu keo dat b i n g di$n, cac block mgch cua phin dilu khiln d i bj sy co (do dd, ke ca trong cac ca khong san xuit v i n phai ddng di$n de cho thilt bi t y s l y va sir dung them hpt ching am). Tren ca so dd, Vien Khoa hpc Cong ngh0 Mo da lya chon loai may khiu keo dat bang thuy lyc tyang dyang loai MG132/320-W do Trung Quic san xuit. Dong bp vai Ipai dan chong va may khiu lya chpn, d l xuit sir dung mang cao tyang dyang loai SGZ630/220. Chi tilt hinh anh va d i e tinh ky thuat ciia may khau, mang c i o xem hinh 2, 3 va cac bang 3,4. Sa d l cong nghp khai thac 16 cha vol cac thong s i va thilt bi d l xuit t h i hien trong hinh 3.
M i : i 3 z / 3 2 a - W D | I R i R a «
Bdng 3. Mdt sd thdng sd kjr thudt ChO yeu ciJa mdy khiu than MG132/320-W
Hinh 2. Mdy khiu MG132/320 - W
Hinh 3 Mdng cdo SGZ630/220 Tren ca so' c i c khu vyc via co kha ning co gi6i hda v l k l hogch san xuat cua Cong ty than Quang Hanh, Dy I n d i u t y cong nghe, thilt bi ca gio'i h6a do Vign Khoa hpc C6ng nghp Mo thye hipn d l lya chpn In chp TT-6-1 mirc -90/
-120 via 6 khu Trung Tam I I vj tri I p dgng d i u tien. Khu vyc 16 cha c6 chilu d i y via tmng binh 2,5 m, gdc d i e trung binh 20°, dp kidn c l cua than f = 1 + 2, chilu d i i in chp trung binh theo hy*ng die 80m, chilu dai theo phyang khu khai thic 530m, d l vIch tryc tilp thupc lopi I n dinh
TT 1 2 3 4 6 7 8 9 10 11 12
Thong so ky thudt Chidu cao k h i u Op kien c l ciia than ChiSu rdng dai k h i u Gdc d i e lam viec Du'O'ng kinh tang khau Lyc di chuyen Toe dp di chuyen
Dort vj m
f m dd mm KN m/phiit
K/|6/ lifong 1,4 + 2,7
£4 0,6
<35»
1400 300 0 + 5,5 Phu'ong thd'c di chuyen: ThOy lire, di chuydn b i n g bdnh rang khdng xich
Cdng suat mdy Nang s u i t t h i l t k l Trong lu'png may
kW T/h T i n
319 500 21 Biing 4. Mdt s6 thdng s6 ky thu$t chu yeu cQa mSng c^o SGZ630/220
77 1 2 3 4 6 6 7
Thong so ky thuat Chieu dai Kich thu'dc cau mdng N3ng s u i t vdn tai Too dd xich
D o n vi m
T/h m/s
K/JO/ Iwgmg 82 1600x690x252
460 0,9 Quy cdeh b l Irl xich: 02 xich giCra Cdng s u i t vdn tai
Cdng s u i t ddng CO T/h kW
450 220 BSng 5. Mgt s6 chf tiSu kinh ti kp thu$t chO yiu vS hi$u quS cua cong ngh^
n
1 2 3 4 5 6 7 8 9
Ten chi tieu Cdng suat khai thde trung binh 16 chp
So cdng nhan/ ngdy- ddm NSng s u i t lao ddng Ton that than edng ngh$
Tong mire dau tu"
Gid tn hipn tpi thye (NPV - hd so c h i i t k h i u r=12%) T y t e l 5 i n 6 i t a i ( I R R ) Lpi nhuan rdng (Pn) Thdi gian hoan von (T)
Dem vi t i n ngydi tin/cdng
t r d
%
t r d t r d
%
nSm Soluvmg
180.000 69 12,5 16,5 157.329,5
17.655 15,92 122 136
4,8 trung binh, da tn^ thupc logi ben vu'ng trung binh, ting tru* lugng huy dpng 16 chg Id 167,5 ngdn t i n . K i t qua tinh toan cac ehi tieu kinh t l - ky thugt chu y l u vd hipu qua kinh t l cug dp- dn cho thiy, vipc d i u tu dp dyng cong nghp cc gifi'i hoa tgi C6ng ty than Quang Hanh se mang Igi hipu qua t i t cho den vj, eong suit khai thac trung
KHCNM so 10/2014- CNKT H \ M L 6
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MATCATA-A L6ao=.aihAngji6 Cot TLD t xa khiirp - J | £ ? ^ 3
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H/n/j 3. Sadd cdng nghe binh dat 180.000 tan/nim, tang tir 1,8 + 2,6 lan, nang suit lao dpng dat 12,5 tIn/cong, t i n g tu' 3,1 + 5,7 so vai cdng nghe hien dang I p dung tai md. C i c chi tieu hieu qua kinh t l cung rit kha quan, g i l tri hien tai thye dat 17.655 trieu ddng, ty le 111 noi tai 15,92%, lai nhuan rdng 122.135 trieu dong, thai glan hoin vdn khoing 4,8 nam.
Chi tilt the hien trong bang 5.
Hien tai, d y an d i u ty ca giai hca khai t h i c tai md N g i Hai da duac Cong ty than Quang Hanh thim dmh va trinh Tap doan phe duyet.
Ap dung cdng nghp ca gidi hoa khai thic tai khu vyc N g i Hai I I thir nghiem trong dilu kipn id cho cd gdc doc cao v l khoang thay doi chilu day via ldn. Kit qua I p dung ccng nghe cdn a phia truac, nhyng chae chan cdng trinh I I sy t h i hien nd lyc trong vipc day manh cp gio'i hda khai thac than v l II ca sa kmh nghiem de ma rdng I p dgng cdng nghe ca gldi hda khai thac a dilu kien phirc tap./.
khai thdc id cha ca gidi hda Tai lieu tham khao:
1. TS. Tryong DLFC Dy. "Nghidn CCPU lua chon cdng nghe ca gidi hda khai thdc cdc via than mdng (<2.0m) ddc thoai din nghidng vCing than Qudng Ninh". Vidn Khoa hpc Cdng ngh0 Md - Vinacomin, Nam 2010.
2. TS. Tran Xuan Hda "Nghidn ci>u ndng cao mOc do ca gial hda vd hien dai hda khai thdc than him Id vd dinh huang (rng dung cho cdc md than him Id vdng Qudng Ninh". Vidn Khoa hpc Cdng nghd Md • Vinacomin. Nam 2011.
3. Lidn hiep cac Hdi khoa hpe vd ky thuSt Vi6t Nam. Cim nang cdng nghd vd thiit bi md, Quyin II - Khai thdc him id. Nha xuat ban Khoa hpc vd KJ thu3t Nam 2008.
4. Bdo cdo khdi luong md cdc ndm tir 2010*2013 vd ki hoach giai doan 2014 * 2020. Cdng ty than Quang Hanh
5 Hd sa dir dn diu tu thiit bi ca gldi hda khai thic tai md Nga Hai Cdng ty than Quang Han/i. Vl$n Khoa hpc Cdng nghe Md - Vinacomin. Ndm 2014.
6. Tdi llSu hypng din vd catalog mdt s i I091 ttil^t bi CO gidi hda khai thdc cua nydc ngoii.
KHCNM S6 10/2014- CNKT HAM LO
