W'''' Thang tin khoa hpc cdng ngh# md DIEU KIEN DIA KY THUAT MO NHUNG V^N DE TRONG CONG TAC cor Gidl HOA DAO LO TAI CAC MO THAN HAM LO All coal seams at Quang Ninh coal basin have been formed in specific[.]
Thang tin khoa hpc cdng ngh# m d W' DIEU KIEN DIA KY THUAT MO - NHUNG V^N DE TRONG CONG TAC cor Gidl HOA DAO LO TAI CAC MO THAN HAM LO All coal seams at Quang Ninh coal basin have been formed in specific deposits The rock layers have been classified fmm the fine-grained structures to the coarse grained ones Therefore, the rock breaking process with combine can not be done with high efficiency due to the technological and Viin Khoa technical charactenstics of rocks In this paper, the authors refer to some probtems in dnving works as well as the solutions that have been applied for increasing the driving speed at some underground coal mines Dat van de Khi trO' lupng than cd t h l khai thdc bing edng nghd Id thidn dang ngdy cdng It din, thl khai thdc than bdng cdng nghd ham Id ngdy cang phdt triin Mil nam, cde md h i m l i phai thi edng vai trdm km dudng Id dd va than Nhiem vg dgt rg d i i vdi edc md him Id Id lam t h l ndo d l bao dam t i e d i thi cing dao ching I i dam bao su dn dmh Ciia kit c l u ching d i u khiu khing tuang xirng vdi tinh chit ea hpe dd nen ca gidi hod ddo Id bing mdy combai chua phdt huy hidu qud D l ndng cao t i c dd ddo Id, khing t h l lly sue ngudi thay t h l cho mdy mde, khdng t h l md nhiiu dipn ddo Id d l ddm bdo s i lupng mdt Id, eho ndn tni'dc hit v i n Id d i u tu ea gidi hod d l ddo ching i i Thllt bi CO gidi hod ddo Id d i i h i i diiu kipn su dpng tuang ung, hodc Trong nhung nam qua, thllt bj phai tuang irng vdi diiu ngdnh Than da d i u tu hang kipn dja ea hpc md chuc mdy combai tay khau d i u Trong nhiiu ndm qua, hdng ngang ddo l i dpe via ngdn kilomet dudng h i m giao than nhu AM-50; AM-45 Vdi thing, thuy didn, thuy Ipi d Vidt su ehuan bj, Ipa chpn hipn Ngm dupe ddo d i t dd trudng, danh gid diing ddn su cu'ng vD'ng Cdc dudng h i m i n dinh theo phuang eiia vig thudng ed tilt didn Idn hdng vdi ddo Id dpe via, diiu kidn dia chuc d i n hdng trdm m^ hiu hit ca m i , nhit Id cde tinh chit ky d i u dupe thi cdng bing thugt, tinh chit edng nghp cua phuang phdp khoan n i than, da vdch, tn,i via vd sp i n Nguyin nhin hfn ch4 c^nh cug via v l chilu ddy gdc sir phit triin cor gidl hoi dio die nen may combain ddo Id d Id vi bi^n phip khic phye mpt s i mo dd dgt dupe t i c d i Cic didu kiin dia ky cao din 345m/thdng (nhu a Vang Danh), tuang duang vdi thuit md inh hu6ng ddn thiit bl thi cdng tie dp ddo Id bdng mdy combai d mpt s i nude tren t h l gidi Tuy nhidn, d i u tu ehua ddng bd, ,han nO'a, d i i u kipn dia chit via khdng dn djnh, thay d i i lidn tgc, kha ndng eat cua Trim tich nhip diln hinh vung Qudng Ninh bilu hidn bdi sp cd mdt vd ldp di ldp Igi thdnh qui ludt cdc logi dd c i t dia ting nhu cdc Idp sdt than, sdt KHCNM S 1/2013" CNKT HAM L TS L£ VAN C N G TS PHAM MINH BiTC KS TAO VAN NGAN KS PHi VAN LONG hoc Cdng nghi Md - Vinacomin k i t d i n b i t k i t vd cdc logi dd cd cdc cd hgt tir nhd din thi vd d i b i n ldn khdc M i l Idp, logi dd cd nhOng ddc d i l m v l c l u tgo vd tinh chit ca hpc, dde bidt tinh kf thudt vd edng nghd quyit djnh d i n sp Idm vide ciia thllt bj thi cdng Id khdc Bilu hipn bdi cdc thdng s i nhu d i kidn c i f theo Protodiaconov dp b i n ndn, dp b i n kdo, midun ddn h i i , khii lupng t h l tich, khii lupng rieng, hay ede dgc dilm v l ky thugt cing nghd nhu tinh chit mdi vdt iipu ciia dd, tinh chit d l khoan n i hay tinh nut ne, tinh phdn Idp theo c l u true v.v Do diiu kidn c l u tgo va nhiJng biln dpng sau qud trinh thdnh tgo vig ndn sp i n djnh nguydn sinh b| thay dii Vi thl, tgi m i l khu vpc md, cdc via than ed c l u tgo khdng giing Cd via than dupe clu tgo bdi cdc Idp cd chilu ddy ldn, song cung cd vig phdn philn, phdn Idp mdng, nirt ne khdng theo qui ludt Ddc tinh via vd dd xung quanh via anh hudng rit Idn d i n vide sir dpng mdy combai ddo Id, dgc bidt Id nang sultvd tidu hao phg kidn mdy Do dd, vipe Ipa chpn logi d i g oat cua Thong tin khoa hpe cdng nghp m d may eombai, hay hudng dieu khien eua d i u cat thi cdng ddo Id dpe via than hay Id dd ed y nghTa quyit djnh d i n vide ndng cao hay can Xra d i n edng suit vd tieu hao phy kien, nang lugng vd tu6i tho cua may Nhung nguydn nhSn dja ky thu^t, dja co' hpc, e i u true vTa anh hud'ng d i n sy cdng tde eua may dao Id khu vyc Quang ninh nhu sau: a) D$c diem mai mdn cOa da Od trim tieh khu vyc Quang Ninh logi ed e i u tgo dgng hgt mm, nhd, thd nhu cdt, eupi hay sgn kit vd'i hdm lup'ng thgch anh I6n anh hud'ng tieu eye den ca gid-i hod ddo Id Od tram tich dup'c hinh thdnh sy lien ket cdc hgt bang xi mang gan kit Op ben eua ede hat "cot lieu" quyit djnh din b i n eua dd Ty le thugn vdi dp ben la dp mdi mdn vat lieu, ede hgt thgeh anh co dp ben rat lan nen dp mdi mdn vat lieu cao Op mdi mdn vgt lieu thi cdng Id sy ton hao cua nd chd sat hay ma sdt tren b l mat da, mdi logi eong nghe pha da khde thi dd mai mdn eung khdc Thi du, doi vd'i cdng nghe phd da bang khoan nd min, eac mui khoan bj mdi mdn phdi phd da bang khoan xoay, nhung doi vd'i may khau, cde rang khiu bj mdn chu yeu milt, elt, ma sdt tren mat da Vi t h l phuang phap xdc dmh chF sd hay mCrc dp mai mdn eua dd d6i vai cae cong nghe khde khdng giong Mii-c dp mdi mdn eho cdng ngh? khoan dup'c Baron L.I vd Kuznhetcov A.V Vien IGO [6] w Bing PhSn lo$i mOc dd md/ mdn cOa dd theo Baron vd Kuznhietcov PhSn lo^i Muv d^ mii mil mdn mtn Chi tieu mdi mdn (mg) Lo^i dd md Sdt kit, marmur, apatit, dd mudi, 5§t 5-10 Sdt kit, dd phin, barit 10-18 Cdt kit Qudng sit, Od vdl, BS sCrng Cdt kit hgt mjn, mgch thgch 18-30 anh Dd vdi 30-45 Cdt kit hgt thd, Granit hgt mjn Mdi mdn rit thip Din 11 Mdi mdn nhd Mdi mdn trung binh thip Mdi mdn trung blnh Mdi mdn cao Mdi mdn tu-cng 45-65 Granit, Diorlt, Amphibollt, Gneis ddicao Mdi mdn cao 65-90 Prophilit, Diorit, Cienit, Mdi mdn rit cao >90 Com mdu m III IV V VI Vll VIII Sdng f^irc dC mdi mdn cOa khodng th4 vd dd md theo Szreinher Khodng the vd dd md (cm^/m) Thach cao Dd vdi, Ddldmit Chaxedon Thach anh Corundum thyc hien bang each su dyng mdu thep xoay vd'i tdc dp 400 vdng/ phut, trpng lup'ng len diu mdu thep la 15 kg, thai gian 10 phut Sy hao hyt mdu thep phdn Idm logi mue dp mai mdn cua dd, dup'c gid-i thidu tgi bang Tuang ty nhu thi nghi#m cua Baron va Kuzhietcov, GS LA Szreinher gid-i thidu dp mdi mdn cua cae khoang the nhu bang Xac djnh dg mdi mon theo cong ngh$ lc tgp, c i c via than Quang Ninh tit combai d i g khiu ngang trgc CO gidl h o i d i o Id bing m i y khdng I n djnh, t h l hign d dg bin KHCNM s d 1/2013* CNKT H X M L Thong tin khoa hoc cong nghg mo ciia Idp d i vich v i d i tn,i Theo dgc tinh k9 thgdt cda miy comgbai AM-50 hay AM- 45, miy c6 t h l khiu dggc d i n d i c6 dg kidn cd f,= Song d i vich, nhit l i vich tnj-c tllp tgi mdt s6 via l i d i bdt kit nhung it phin philn v i phdn Idp rd rang Cac Idp cd chilu day Idn, tinh phan Idp v i nirt ne it ndn dao khau khdng hogt dgng trdn nguyen t i c ddt tich che m i theo nggydn t i c dgp c h i sat Vi vgy ring khiu bj mii mdn rit nhanh NhOng bii hgc tir qui trinh ca gi'di hoi dao Id vi cich khac ph{ic Md hidn dgi phai l i md ca gidi hoa It ngu'dl It lao ddng thu cdng v i vg sinh mdi tnrdng linh mgnh, vl t h l vigc sir dgng may combai d i o 16 la dimg din Kinh nghigm cho thiy, x i c dinh dung ddi lup'ng v i dllu kipn thi cdng sil" dgng miy combai thi toe dd va nang sgat cao, khdng thga kem ng'dc ngoii Nhu* viy, cdng t i c nghien ciru, danh gia cac chi tieu ca hgc, cac dgc tinh ky thuit, cdng nghd cua than va da phai dugc qgan tam va d i g tu tru'dc dua may v i o siJ' dgng Ngoai rg c i n phai nghien cirg ndi dja h o i tirng phin miy conbai dio Id d l cung d p kip thdi cho yeu cau ca gidi h o i va d l miy hogt dgng lien tgc c i n nghien cii'g che tgo nhO'ng phg kipn chdng hdng, tieg hao Idn nhg' rang khIg, trang bi c i c thiit bi d i p bgi d l nang cao mii'c dd an toan cai thidn dilg kidn cho ngudi lao ddng D l combai hogt dgng lidn tgc c i c dudng 16, dd bin ciia d i xung qganh via thgy dii, d n kit hap khIg guang vdi vide kit hgp d c cdng nghp lim /r~ ^V '' \ \ 1 ' 0[0.yO> Hinh Hutmg djch chuyin 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