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Thong tin khoa hoc cong nghe mo QigJdejL ejuCit LaCa CIML CONG NGHf CO GI6I HOA KHAI THAC CAC VIA THAN DOC, CHIEU DAY MONG VA TRUNG BINH tai cac mo ham 16 viiiig Quang Ninh %M present, at Quang Ninh u[.]
Thong tin khoa hoc cong nghe m o QigJdejL ejuCit LaCa CIML CONG NGHf CO GI6I HOA KHAI THAC CAC VIA THAN DOC, CHIEU DAY MONG VA TRUNG BINH tai cac mo ham 16 viiiig Quang Ninh %M present, at Quang Ninh underground coal mines, there have been significant coal tonnage belonging to the dip coal seams (a > 3^) with thin and average thickness, about 86 million tons It is considered as an essential task to exploit these coal seams for increasing coal productivity, saving natural resources and increasing mining efficiency In this paper, the ^authors deal with the selection of the technology for ^oal mining mechanization for dip coal seams having ^jlhin and average thickness at Quang Ninh wunderground coal mines TS TRU'QNG DU'C DU" KS NHU" VIET TUAN KS DAO NGOC HOANG Vien Khoa hgc Cong nghe Mo - Vinacomin C^3\ viing than Quang chilu dde va su trugt ndn Id cdn t h i p va d i l u kien dja chit o / Ninh, pham vi cac lam m§t dn dinh vi chdng cac via than doc, mdng va day trung binh r i t phCrctap mo ham id tinh den mil-c da v.v Viec khai thac cac via than tham dd va lap cac dir an khai Tren the gidi, cdng nghe thac, cd tru- lugng than dang mdng thudng cd hieu qua khai thac cac via than dde, k l (khoang 86 trieu tan) thugc t h i p han khai thac cac via mdng va day trung binh da v§ cac via doc (doc nghieng than day trip lugng than phat triln tir thu cdng d i n co va d i e dipng: a > 35°), cd tren mot don vi dien tich la gidi vdi nhilu loai hinh khac chigu day mong va trung binh nhd va khdng gian khai thac thugc v l hai dang ca ban la guong Id ngan va (0,71m - 3,5m) Viec khai thac chat hep Day la nhu'ng van de phirc guong Id chg dai Cac he cac via than la c i n thiet de gia tang san lugng, tiet tap khai thac cac via thong khai thac ap dung gom kiem tai nguyen va nang cao than doc, mdng va day trung cot ngan, cot dai, khdng cd hieu qua cua cac di/ an khai binh ndi chung va dac biet khd ngudi guong khai thac, khan hon doi vdi viing Quang khai thac theo cac dai bang thac mo Tuy nhien, thuc hien Ninh trinh cdng nghe may cua than v.v Cdng khai thac co gidi hoa cua ta nghe khai thac hien khai thac cac via than a nhilu nude d i e se gap cac khd phat triln da co gidi khan dao chdng 51,6'ro hoa: khiu than bing Id, di lai cQng nhu van may combai hoac may chuyen vat lieu a dp bao than, hoac k i t dde cao v.v Do vay, hgp no vdi may 16 iV, cac giai phap cdng 2(i,on'( tdi cao; chdng giu' Id nghe khai thac iO,(iO'( chg bang cot thuy luc 0,00'< phai khac phuc dugc 2.21-.l.im hoac dan tu hanh anh hudng xau cua dp hoac khdng chIng t5-5''Jo doc Idn nhu: su trdi giu", vay, da nang >55 Jo 0,7M.2ii trugt cua than khai thac cao san lugng, nang tir guong va trdi trugt f/jeo s u i t khai thac va nang cua dat da sap dd tii' Hinh Moi tuxrng quan trO'lwg'ng than cao mipc an toan pha hoa la rat Idn; luc chieu day va goc doc cac khu virc lao dpng d i y xd cot chong theo CO kha nang cc g/d/ hoa khai thac KHCNM SO 4/2011* CNKT HAM LO Thong tin khoa hoc cong nghe m o (g cac md Dong Vdng, Quang Hanh) Trong cac he thong khai thac tren, cdng nghe khau gugng thuc hien bang khoan no min, chong Id bang gd, hoac cot thuy luc dan, hoac gia thuy luc di dpng Nhu vay, ban chit cdng nghe vin la thu cdng, nen cac chi tieu san lugng, nang suit lao ddng thip, ton thit than cao, trwjc dp an toan cdn han chi M|t khac, su phu-c tap cua dilu kien dia chit md, su ddi hdi dilu kien ap dung khac cua he thong cdng nghe khai thac, tinh chit phinc tap cua cdng nghe va hieu qua Hinh Scy cong ngh^ khai thac Id dgc via phan tang dat dugc thip cua qua trinh ap dung thu nghiem, nen siF diing dan chong tir hanh ket hgp lo khoan dai nhieu he thong khai thac da khdng dugc md rpng nhu he thong buong, cac he thong khai thac bang dan chong cung va mem, he thong Id chg chan khay vdi dilu khien vach bang chen Id Su khd khan viec lua chpn va ap dung cdng ngh$ khai thac cac via than doc, mdng va day trung binh g cac md ham Id vung Quang Ninh da dat vin d l cho cdng tac nghien cuu so E)6 C N G NGHC KHAJ THAC LddotfQda KHOWJ L M I N H A TRSN HAP M S M ) N hiS T R A N THU Hdi THANKATRAN SOeOCfiNGMHKHUTHlf IMTOITA.A Trudc yeu cau nang cao san lugng, nang suit Vci an toan lao ddng khai thac than, viec eg gidi hoa khai thac than ham Id la nhiem vu t it ylu ma Tap doan Cdng nghiep Than - Khoang san Hinh Scy cong nghe khai thac cot dai theo hw&ng doc,Viet Nam (Vinacomin) phai khau girang bang may bao than, chong giir Id cha bang dan triln khai Tuy nhien, chong tie hanh dilu kien dja chit md phipc tap, trinh dp edng nghp khai Tai cac md than ham Id md Vang Danh), cdt dai theo va eg md eua ta thac cua Viet Nam, cac via than phugng vdi Id chg bac chan cdn han che, nen cac cdng doc, mdng va day trung binh khay, chong giO bang cot thuy eg gidi hoa khai thac nghe da ducc khai thac bang cac luc (g md Hong Thai), Id chg ham Id can dugc triln than he thong buong, pha no phan bac chan khay vdi dilu khiln khai timg budc theo cac md ting (tai nhilu md), dan chong vach bang chen Id (g md Mao hinh, qui md va dac bipt can CLPng (g cac mo Vang Danh, Khe), Id dpc via phan tang kit cd nghien cuu, triln khai thu Mao Khe), dan chong mIm (g hgp Id khoan dudng kinh Idn 'CMud^vBMl.Ui •fe&ra>C, • [»; bfr At^ v« d«j day vb dJl 3DV • [>9tiAd^rf9^dA:dil3SL - Ung s ^ U d^ 2001X0 - SOSOl TAi^ -I£rg9il^d;r«:15-207;U9 -TbMlhnlS-2nL KHCNM SO 4/2011* CNKT HAM LO Thong tin khoa hoc cong nghe m o nghiem, due rut kinh nghipm va hoan thipn cdng nghe Thuc hien chu truang cua Vinacomin, nhu'ng nam trudc day, Vipn Khoa hpc Cdng nghe Md da phoi hgp vdi mot so md him Id (Khe Cham, Vang Danh, Nam Mlu) trien khai thuc hipn cac du an eg gidi hoa khai thac cac via than thoai va nghieng, la via than thuan Igi thg'c hien khai thac eg gidi hoa Tilp theo, Bp Khoa hpc Cdng nghp da giao cho Vien thue hien de tai "Nghien CLPU lua chpn cdng nghp eg gidi hoa khai thae cac via than doc, chieu day mdng va trung binh tai cac md than him Id vung Quang Ninh" theo Hgp dong so 008/2009/HD-DTDL ky 02 thang 01 nam 2009 Cac muc tieu cua de tai la: - Xay dung cac sg cdng nghp eg gidi hoa khai thae, phu hgp vdi dieu kipn dja chit - ky thu|t eae via than doe CO chieu day mdng va trung binh tgi cac md ham Id viing Quang Ninh - Ap dung thu nghiem cdng nghe eg gidi hoa khai thac lya chpn va hoan thipn cac thdng so ky thugt nham nang cao san lugng khai thac, nang suit, mue dp an lean lao dpng va giam tin thit tai nguyen Tren eg sg dd, xay dyng hudng din cdng ngh$ de ap dung cho cac khu vyc khac CO dilu kipn tugng ty Hinh So' cong nghe khai thac cgt dai theo phuxyng, khau gircng Id chg' bang may bao than hoac may com bai, chong giu' Id cho bang dan chong tir hanh khai thae ap dung cdng nghe eg gidi hoa dilu kien tugng ty a nude ngoai; xac dinh pham vi ap dung cua tCmg loai hinh edng nghe eg gigi hoa; nghien cuu de xuit, lya chpn eae so edng nghe, dong bd thiet bj eg gidi hoa phu hgp vdi dilu kipn dja chit - ky thuat va lua chpn ap dung thy nghiem cdng nghe mot dieu kien cu the Trong qua trinh khai thac thu nghiem, tien hanh theo ddi, dae, phan tich so li#u, danh gia eae chi tieu kinh t l - ky thu?t cua cdng nghp lam eg sg de hoan thi#n cac thdng so eua sg cdng nghp khai thac cung nhu quy trinh cdng ngh?, hp chieu khai thae va l|p hygng din ap dyng De giai quyet dugc cac npi dung nham dgt mue tieu nghien cuu, de tai da tien hanh danh gia tong hgp dieu kipn dja chit - ky thugt md cac via doc CO chilu day mong va Qua nam thyc hi$n, Vien trung binh tgi eae md ham Id; Khoa hpc Cdng nghp Md tong hgp cac kinh nghipm Vinacomin da hoan eae KHCNM SO 4/2011* CNKT HAM LO ndi dung nghien CLPU cua de tai vdi nhu'ng ket qua dugc tong hgp nhu sau: Sy dung phugng phap danh gia tong hgp trO' lugng, dilu kien dja chit - ky thuat md va dya tren eae tieu chi danh gia kha nang ca gidi hoa khai thac Vien VNIMI (Lien bang Nga) lap, d l tai da xay dyng bp eg sd du' lieu tru" lugng than va dilu kien dja chat ky thuat md cac khu vyc via doe ed chilu day mdng va trung binh bao gom khoang sang than: Mao Khe, Hong Thai, Ha Long, Hdn Gai, Quang Hanh va Mdng Dygng theo eae mCpc khai thae va tham dd d|a chit vdi tong trO' lugng dja chit danh gia la 86.452.600 tin Trong dd, tru' lugng than cac khu vyc cd kha nang eg gidi hda la 50.317.000 t i n T h o n g t i n k h o a hoc c o n g n g h e m o chiem tdi 58,2% tdng tru' lugng danh gia K i t qua danh gia cho thiy, cac khu vyc via than dde, chilu day mdng va trung binh d viing Quang Ninh tuang doi thuan igi d l triln khai ap dung ca gidi hda, vdi nhCi'ng d i l u kien dac trung sau: - Tai cac khu vuc ed chilu day via mdng tiF 0,71 m -^ 1,2m tru" lugng it, chi chilm 10,22% tong trCr lugng danh gia va chilm 17,55% trii' lugng cd kha nang ca gidi hda M i l n trCi' lugng cd mCpc dp tap trung r i t thap, cao nhit la 4,36% t i n g iru' lugng cd kha nang ca gidi hda (khoang 2,2 trieu t i n trCK lugng dia chit) Vdi mLPC dp tap trung t h i p nen viec ap dung ca gidi hda gap khd khan, vay, d l tai khdng tap trung nghien CLPU khai thac ca gidi hoa cho phan tru' lugng - Tai cac khu vuc cd chilu day via tip 1,21m -^ 2,2m, trCi' lugng chilm chu y l u pham vi danh gia vdi 31,79% tdng trO lugng eae khoang sang than va tdi 54,63% trip lugng khu vuc cd kha nang ca gidi hda, dd m i l n gde doe 35° -^ 55° chilm tdi 51,69%, phan bd tai Hong Thai (19,18%), Quang Hanh (14,26%), Ha Long (8,97%) va Mao Khe (3,13%) Cac khu vuc via cd gde dde tren 55° chilm ty trpng nhd (1,71%) va tap trung tai Mao Khe - Tai cac khu vuc via ed chilu day tip 2,21m ^ 3,5m, tru" lugng chilm tugng ddi Idn vdi 16,19% tong trip lugng danh gia va chilm tdi 27,82% trip lugng khu vuc ed kha nang eg gidi hda, dd 17,42% (8,8 trieu tin) thupe pham vi via doc nghieng (35° 4^ 55°) va 10,41% (5,2 trieu tin) thupe pham vi via doc dipng Tru' lugng phan bo tai Ha Long (11,12%; 5,6 trieu tin), Mgo Khe (10,41%; 5,2 tin), Mdng Duang trieu (3,66%; 1,8 trieu tin) va Quang Hanh (1,76%; 885.200 tin) Cac khu vuc dugc danh gia pham vi d l tai chu yeu ed chilu dai theo phuang khu khai thac Idn han 200m (chilm 97%); theo hudng doc d i n % cd chilu dai tren 200m Day la mot nhtpng y l u to thuan Igi d l ap dung cac md hinh ca gidi hda d i l u kien via than dde cd chieu day mdng va trung binh Tip k i t qua nghien CLPU d i l u kien dja chat md; danh gia tdng hgp kinh nghiem ap dung cac edng nghe khai thac cac via doe, cd chilu day mdng va trung binh bang phuang phap thu cdng truyin thdng tai cac md ham Id viing Quang Ninh va kinh nghiem ap dung ca gidi hoa d i l u kien dja chit - ky thuat md tugng t u tai cac nude cd n I n cdng nghiep khai thac than phat triln, d l tai da-