Thong tin khoa hpc cdng nghp md 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 Hfi i CONG n r i H f i N QUfiNG HfiNM At present, the[.]
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 TS TRycNG Dire oy TS B A O H O N G Q U A N G Quang Hanh Coal Company and submitted to Vinacomin ThS OINH V A N CyOfNG The application of the coal mining mechanization at Nga Hai area has been carried out at the longwall within the pilot Vien Khoa hoc Cdng nghe Md - Vinacomin ThS BUI DiNH THANH scale with the coal seams having high dip angle and ThS NGUYEN HAI TRUNG variable thickness The results from this pilot application will KS NGUYEN NGQC QUYNH be the basis for widely applying the coal mining Cong ty than Quang Hanh - TKV mechanization to the complicated conditions Bien tap: TS Trwong DCrc Dw Khoang sang than Nga Hai Cfing ty than Quang Hanh quan ly duge x l p vdo nhfim mo phirc tpp loai ill, gom 35 via than, 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" Cfing ty Co phin Tu v i n O l u tu 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 ting trir lugng khoang 47,9 tripu tin Trong dfi, trij- lugng ting -50 -^ -175 khodng 22,6 tripu t i n dd hodn cfing tdc khai thfing vd dang dugc khai thdc dam bao 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, da kit 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, 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 him 16 sd dgt 1,0 tripu tan nam 2014 va 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 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 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 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 w Thong tin khoa hoc cong nghe nno Khoa hpc Cong nghS Mo cung phai hop nghien 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 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 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 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 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 bang 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 tu hanh, khiu than bSng may bao; (2) So 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 cong nghp khai thac tu dgng hoa, khau than bang may khau kit hop dan tu hanh, cac cong viec qua trinh khai thac dypc thuc hien tuin ty 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 so thyong chi ap dung phii hop 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 kien co ciia da kep via phai nho, cong suit khai thac thap hon so vo'i hai so cdn lai [1,3,6] Tuang tu nhy so so 1, so so cung doi hoi mii'c dp biln 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 tu 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 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 tilp nhan cong nghp ciia nguoi tho 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 ty hanh (sa so 2) de ap dung chp cac khu vyc via than dy kiln ap dung ca giai hca dilu kien Cong ty than Quang Hanh Tuy nhien, cac thong s i chinh cua so 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 ty thai dilm hipn Chilu dai 16 cho dyac chpn phu thupc vao dilu kien dia chit mo 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 Mlu 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 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 Tdng hap trCr luang c6 kha nang ca glai hda tai tdng -50/-175 md Ngd Hai Gdc doc via (dd) Tru' tircmg huy dgng (ngdn tan) Chidu ddy via (mdt) 1,41 + , 2,61 + , 2,81 + , 3,21 + , Tong Ty l« (%) £20 327,8(57,1%) 0 233,4(10,0%) 661,10 67,2 20,1-35 351,1 (16,1%) 115,9(5%) 123,9 (6,3%) 172,5(7,4%) 763,5 32,8 Ting 678,8 116,9 123,9 405,9 2.324,6 100 Ty 10 (%) 72,2 6,0 5,3 17,6 100 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 pham vi 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 ^ 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 biln vd trao doi vfi'i cac ehuyen gia ea cua nufi'c ngodi, thfi'i diem hipn 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 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]: 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 tin, 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, vdy vat lieu gia cfing phai cfi sire ben cao, din din gia san xuit phai tang len; (4) Lyc can lam vipc cua dan tang, dd d l phfing hipn tugng "truang xi lanh" qud trinh su dyng, xi lanh cua cpt phai diing vat lieu cfi sire bin 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 Tir cac phan tich trdn, 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 - Nlu phgm vi ehieu day via lya chpn dan ching phu hgp, cac mien chilu ddy via cfin Igi ching Id 1,4 -?- 2,5m (1.678,8 ngdn tan, chilm se chip nhgn t i n thit mpt phin than fi' nfic hogc 72,2% tong tru- lugng ca gifi'i hfia), chilu cao nin 16 chg qud trinh khiu tuang irng cua ddn se la 1,2 -^ 2,6m, irng vfi'i Kinh nghidm cho t h i y cung mdt dilu miln ching gitr max ^ 1,4m Day la mien kipn sir dung, cac loai dan chong cfi xuit sir tCr chong gii> khd bien cua cac thilt bj ddn cae nufi'c Dong Au noi rieng, cdc nufi'c chau Au chong dugc san xuit tgi Trung Quic vd mot s i nfii chung thuo'ng cfi chit lugng tot han, nhien, trpng lugng vd gia Igi cao han so nufi'c khdc tren the gio'i - Neu phgm vi chieu ddy via lya chpn dan vfi'i ddn ching Trung Quic san xuit Trong ching la 1,4 -^ 2,8m, dfi mire dp phii hgp cua dieu kien quy mo cong suat xay dyng cho eae 16 ddn ching se mo' rpng them 6w(;fc 5% ting tru chg ca gifi'i hfia tai Cong ty than Quang Hanh lugng ca giai hoa (115,9 ngdn tin), ndng ting khfing Ifin (du kiln khoang 180.000 tan/nam), trO lugng phu hgp eua thilt bj Idn 1.794,7 ngan chat lugng than nguydn khai o" mirc dp trung t i n Trong trufi'ng hgp ndy, ehieu cao tuang irng binh, d l ding th6'i thue hipn chu truang ca gi6'i cua ddn se Id 1,2 - 2,9 (3,0)m, tuang irng vfi'i h6a va dam bao hidu qua cua cong tdc diu tu, miln ching giCr max H- 1,8m Theo phan tich cdc bdn thing nhit su dyng ddn ching tuang duang vfi'i loai dan ZY3000-12/26 Trung eiia cac chuyen gia ca khi, vfi'i mien ching giO' Quoc san xuit 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) Khac vfi'i logi dan ching tu hanh da dp dung Du&ng cong chiu lyc cua cdc tay bien giam di trufi-c day tai Cfing ty than Khe Cham, ddn dang k l mirc dp hgp ly; (2) Vi pitston ciia cot chong ZY3000-12/26 dugc c h l tgo d§c bipt vd ddn ching da den giai hgn hanh trinh, goc b l sung mpt s i chi tilt kit c i u d l cfi t h i Idm vipe nghieng cua cpt ching cOng tang Idn, dan den I n dinh dieu kipn gfic d i e 16 chg len 16*1 KHCNM S6 10/2014* CNKT HAM 1,6 Thong tin khoa hpc cong nghe mo 35°, gdc die len xuing thee hypng khau len td'i ±15°, eg the: (1) Cac dan chong 16 chp dupc lien k i t vd'i bang he thing xi lanh ching troi (lien kit d l cac dan ching), ching lat (lien kit xa cac dan ching), va he thing xich, piston lien kit 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 dilu kien goc doc Ion Ngoai ra, de dan cung dyac trang bi kich nang d l xy ly ching lun truang hap dan ching bi liin xuing nin 16 cha; (3) T i m da guang dypc cai tien dang thd thut thay cho hinh thirc t i m lat kilu ban l l de tang tinh chu dpng viec vach 16 chp qua trinh khiu guang, ding thai tang dien tich sir dung khong gian phia trpng Idng dan Chi tilt xem tai hinh 1, bang Ciing vd'i dan ching, may khau va mang cao la nhirng thilt bi chinh dong bp thilt bi le chp ca giai hda Trong do, may khiu dyac lya Ddn chdng ZY3000-12/26 chpn phai dam bap phii hap vd'i dan ching, quy mo cong suat va dac dilm dilu 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 via (neu co), d i e 16 cha theo phyong va theo hyang doc Theo hinh thii'c keo dat, may khiu duac chia 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 qua trinh lam vipc; (3) Co tram dilu 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 dilm so vai may khau keo dat bang thiiy lyc la: (1) Phin dilu khiln dien phii'c tap, yeu c i u tha sira chira phai co trinh dp ky thuat cao; (2) Khi lam viec 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 vd chdng trdi dan ZY014-71 Hd thdng chdng trdi mdng cdo ZY014-72 Hlnh Ddn chdng ZY3000-12/2e vd cdc kit ciu lidn kit chdng trdi, dd ddn vd mdng cdo Bang Bde tinh ky thudt ciia dan chdng ZY3000/12f26 TT 0O77 vj Thong so ky thuat Khoi Iwgmg Ghi chO Hinh thirc d^n chong Dang che c h i n Chieu cao dan chdng mm 1200 + 2600 Chieu rdng dan chdng mm mm 1430 + 1600 1500 Khoang each tam hai dan chdng Bird'c di chuyen dan mm 600 0 doc 16 chp cho phep S36° Gdc doc cho phep theo hu'dng khau Ap lyc chong 6a Ifi'n nhat dd ±16° kN 3000 P = 36,1 mPa Luc chdng ban d i u kN P = 31,5 mPa 10 Cu'dng dd chong giu' MPa 2616 0,6 + 0,53 11 Ap lu'c len de d^n chong MPa 1,16 12 Trpng lu'png ddn chong tan -11 KHCNM S6 10/2014" CNKT HAM L Thong tin khoa hoc cong nghe mo ham, d l ph6ng troi may (may khiu kep dat bing Bdng Mdt sd thdng sd kjr thudt ChO yeu ciJa m thuy lyc thi dya vao m l men lyc cua m6 to nSn khiu than MG132/320-W ty ban than co t h i phanh ham); (3) Trong cimg TT Thong so ky thudt Dort vj K/|6/ lifong mpt dilu kien cong suit, gia dat gap l i n 1,4 + 2,7 Chidu cao k h i u m so vdri mdy khiu keo dat bing thuy lyc; (4) Xet f £4 Op kien c l ciia than v l dilu kipn dac thil thye t l moi tryd'ng ham 16 ChiSu rdng dai k h i u m 0,6 Vipt Nam noi chung, Cong ty than Quang Hanh Gdc d i e lam viec dd