Thong tin khoa hoc cong nghe m o ^ NGHIEN CUU LUA CHON CONG NGHE CO GIOI HOA KHAI THAC CAC VIA THAN MONG N A M THOAI DEN NGHIENG tai cac mo than ham Id vdng Quang Ninh According to the evaluation of the geological and TS NGUYEN ANN T U A N coal resource conditions at Quang Ninh coal basin, Pho Tdng Giim ddc the thin coal seams have been largely distributed TSp doan Cdng nghiep Than - Khoing san Viet Nam and accounted for a significant ratio in the total coal ThS T R A N T U A N N G A N resources The paper represents the study on the ThS PHONG V I E T B A C selection of the mechanization technology for minKS N G U Y E N NGOC GIANG ing the thin coal seams (0.8-hi, 2m), gentle slope to Vien Khoa hoc Cdng nghe Md - Vinacomin the inclined angle at Quang Ninh coal basin Bien tap: TS Truang DOv Du Ket qua danh gia sc bp pham vi cac mo than hhm 16 tai vung Quang Nmh tinh den mu'e da tham va lap cac dy an khai thac cho thay, trO'lu'p'ng c^c vfa than co chieu day ti> 0,8-^1,2m, nam thoai den nghieng chilm ty le dang k§, khoang 37 trieu tiin Trong do, tru- lu-ong c6 kha nang co gid'i h6a khoang 21,5 th#u tiin, chiem 57% tong tri> lu'p'ng du^oc danh gia Tru'oc yeu cau nang cao san lu'ang, nang suat va an toan lao dOng, dac bi$t h^u het cac mo phai ti^n hanh khai thac xu6ng s^u, di^u ki#n khai thac cang kho khan hon, cac so cong ngh? khai thac truydn thOng khong dap u-ng du-oc yeu cau cua san xuat Do do, viec nghien cCru ap dung cac so cong nghp khai thac cac vfa than mong, n^m thoai d4n nghieng theo hu-ong ap dyng co gioi hoa nhim huy dpng trulu'p'ng cac via vao khai thac tranh ton thiit tai nguyen, d6ng thdi nang cao nang suat, san lu'p'ng khai thac va an toan lao dpng la het sii-c c^n thi^t Kinh nghipm khai thac tai cac nuoc co nen cong nghipp than phat triln nhu Nga, My, Australia, CH Sec, Ba Lan, Trung Qu6c,v.v vi#c khai thac via than mong (0,8 -H 1,2 m) nam thoai d i n nghieng (£ 35°) da du'octien hanh khai thac bang co gioi voi nhieu so d6 cong nghe khai thac dk phii hop voi cac dieu kipn dja chat mo, nhu-: Cac h0 th6ng khai thac ap dung 16 cho ngan, 16 cho dai, khdng co ngu'O'i gu'ong khai thac tai mpt s6 nu-oc nhu" My, Canada, Australia, v.v dac biet o My loai hinh chiem 25 % ty trpng san lu'gng than khai thac ham 16 Cac via mong du'p'c khai thac dieu kien dat da vach via tie khdng ben vi>ng d i n ben viJng Cac he thong khai thac chinh bao gom bu6ng va bu6ng - cot; he th6ng khai thac cot ngan cung du'oc ap dung nhu'ng pham vi hpp tai cac via c6 chilu day o- ngu-o-ng gioi han tCr 0,6 va 2,0m He th6ng khai thac cpt dai theo phu'ong hoac lien gu'ong dgng gu^ong 16 cho dai (chieu d^i 16 cho 16'n hon 50m) Doi vo'i cac via co chieu day tLF 0,8 -^ 1,2 m; g6c doc d i n 35°, via on dinh ve t h i nam va chilu day, tai cac nu'O'c nhtr Nga, DCec, Anh, My, Australia, Ba Lan, Sec, Trung Qu6c,.v.v ap dung voi cac phu'ong an nhu-: 16 cho - ting hoac chia tang cac phan tang khau than bing may khau hoac may bao, chong giu' 16 cho bang dan ching ttr hanh, dilu khiln ap Iyc mo bing pha hoa toan phan hoac chen 16 He thing cpt dai theo phirong du'oc ap dung cho toan bp trCc lu^ong huy dpng vao khai thac gi6'i han ting, phan ting, ruong mo hay khu khai thac du'oc chuan bj bang he thing du'o'ng 16 khep kin C6n d l i v6'i he thing khai thac lien gu'ong du'oc ap dung it hon yeu c i u bao ve cac du'6'ng 16 doc via; theo d6 phLHong an chieu dai 16 chuan bj dyoc dao tru'O'c gu'ong 16 cho tCr 30 -^ 50m nhim thuan loi cho cong tac van tai cung nhu' giam anh huo'ng qua Igi giija cong tac chuan bj va khai thac Hp thong khai thac gu'ong 16 ngin vo'i cac thiet bj khiu than co gio'i h6a ap dung cho cac via co chieu day tu' 0,6 ^ 2,0m du-oc phat trien biln Ngoai ra, tgi mot so nuo'c nhu' My, DCre, Australia, Nga, Trung Quic da va dang ap dyng cac cong nghe khai thac khong c6 nguo'i KHCNM S 12/2014* CNKT HAM L Thong tin khoa hgc cong nghe mo gifang khiu nhu-: cong nghe khai thac su" dung khau than bing khoan duo'ng kinh lan; cong ngh? khai thac SLf dung khau than theo cac dai khau bang may cua; khai thac bang sCfc nu-ac Dao diSm chung cua cac so 36 c6ng nghe la khu VU'C khai thac du-gc chuan bi cac dai khau theo phuong, mSi dai khau du-gc khau bing each khoan cac i6 khoan duong kinh Ion, hoac su- dung may cua than va toi hoac sung ban nuoc Cac thiet bi khiu than hoan toan dat tai cac duong 16 bao quanh dai khiu (16 dgc via phan tang) Kich thuo'c guong khiu cac cong nghe khai thac noi tren dugc xac dinh tren eg so dieu ki$n dia chit mo va dpc tinh ky thujt cua cac thiet bi su dung Chieu dai t6i da cua guong khiu phu thugc vao kha nang khoan cua may khoan duo'ng kinh 16'n, va kha nang hoat dpng cua may cua than ) Than dugc van chuyen tu guong io van tai bang thoat phoi cua khoan hoac toi cao, d6ng nuo'c sau dugc Vein tai bang mang cao khoi gioi han ruong mo Kinh nghiem khai thac tai nuac ngoai cho thay, triln vgng dua vao ap dung mpt s6 so db cong nghe dieu kien cac via mong vung Quang Ninh la hoan toan co co so, dam bao hi$u qua kinh te cung nhu an toan lao dgng th6ng qua cac nghien cuu ly thuyet va thuc nghidm ap dung thu nghiem Tgi Viet Nam, hi$n nay, hlu het cac mo mo'i huy dgng khai thac dugc nhung vfa than co chilu day tin 1,6m tro' ien Mpt sp mp ham ip nhu Duong Huy va Quang Hanh da ap dung thij' nghiem cot thuy luc don DZ-16 de khai thac cac vfa than c6 chieu day den 1,3-^1,6m, nhien gap nhieu khe khan khong gian io chg ch^t hep anh huong ion den cac cong tac san xuat 16 chg Cu t h i , tgi via 11 cac muc -110/ 50 va 16 chg muc -50/-5 khu Trung tam - Cong ty than Quang Hanh, cac chf tieu kinh te ky thu|t dat duoc cac nam 2012 •^2014 nhu sau: san lugng 16 chg giao dgng tiJ- * nghin tan/ thang va khoang 50.000 + 80.000tln/nam, chi phi g6 20m^/100tln, chi phi thuoc no 170kg/1000 tin, chi phi kip 700 kip/1000 tin, chi phi dung dich nhu hoa 100 ^ 110 kg/1000 tan, nang suit cua cong nghe dgt dugc -^ 2,9 c6ng/ca Qua cho thiy, viec khai thac cac khu vfa mong, nam thoai den nghieng vol cong ngh$ KIIC^M S6 12/20E4* CNKT HAM LO thu c6ng dang ap dung tai cac mo gIp nhieu kh6 khan khong gian 16 chg chgt h?p, kh6 \im cae ChT tieu kinh t l ky thuat flat dugc thap NhuvSy, vgi dieu kien cac vfa than co chieu day du4l 1,2m, chua lu-a chgn dugc cac cong ngh? khai thac hgp ly, nen hien khcng dugc cac mp huy dgng vao khai thac, da gay lang phi tdi nguyen, giam hi#u qua d i u tu xay dung co ban cho toan bO khu vuc khai thac Qua phan tich chi tiet phin tru lugng via mong (0,8 +1,2m), nam thoai d i n nghieng vung Quang Ninh co kha nang eg gid'i hoa cho thiy, tru lugng vfa thupc phgm vi vfa d i e nghieng (19 + 35°) chiem 88%, via doc thoai (£18°) chiem 12%; Vach chu y i u \i bin vu'ng d i n ben vung trung binh chilm 95,4% b i n vung chilm 86%; Trg I n dinh d i n 6n dinh trung binh, d6, on dmh trung binh chiem 53%, tru In dinti chiem 47% [11; chieu dai theo phugng khai thSc tu 200 - 500m chilm 26,8%, chilu dii theo phugng >500m chilm 67,6%; chieu dai ttieo hugng d i e vfa >200m chilm to'i 86,5%.Qua cho thiy, cae yeu to tren thugn lpi de ap dgng cac mo hinh eo gioi hoa dilu kien vfa than mong, doc thoai d i n nghieng Tren eg so' phan tich, danh gia, ta phan cdc khu vuc vfa than eo kha nang ap dgng eg gioi h6a khai thae thoa man eae tieu chi nhu sau;(1) Chieu dai theo phugng: £200m, ehieu dai theo huong doe £ 100m, dp biln dpng ve chilu dSy vfa:£35%, dg biln dgng ve goc d i e vfa: s35%, ty le da k?p tren gugng: dyng may khiu k i t hop vdi dan chong tu cd kha nang lam vipc dilu kien goc d i e via KHCNM S 12/2014* CNKT HAM LO Thong tin khoa hoc cong nghe m o c Din chdng tl/hinh ZY2000/6.5/13(TQ) d Dan chong tw hanh 2KDD (SNGj Hinh Mpt s6 ioai dan tu hinh s(> dung khai thic via mdng [3] Bing Gia trj doi v&i loai dan Ten chi tieu ZY2e00/6.5/13 ZQY2800/07/14 chong ZQY2000/07/14 iKoa Chieu cao chong giO, mm 650 + 1300 700+1400 650+1300 900+1600 Chieu rpng chong giO, mm 1600 1430+1570 1500 1420 Khau 66 I l p d^t dan ching, mm 1500 1500 1500 1500 Sue ch|u tai cua dSn chong, KN 2800 2800 2000 2000 Dan hai cpt chong Dan hai cot chong Dan hai C6t chong Ddn hai opt Chong - - 1,99 + 2,93 Chieu dSy via, m 0,65+1,3 0,7 + 1,4 0,65+1,3 0,9 + 1,5 GCc doc via, dp dung tai cic nu^ Bang Gia tri doi v&i loai may Ten chi tieu Chieu ddi khau 16 chg, m Chieu day via, m GPc doc via, dp T6C (50 di chuyen, m/ph Cong s u i t dOng eg dipn, kW bio ST26/2X65 SO-75 BH26/2X7S ycr4 £160