KHOA HOC VA CAHG NGHE MO Ê ^m CHON THONG SO KHOAN NO, XUC BOC TANG CAO PHU HOP v d l DIEU KIEN KY THUAT CnC MO THRN VUNG QUflNG NINH NCS LE CONG CUONG, ThS DO NGOC TUOC ThS BUI DUY NAM, KS VU filNH T[.]
_E^ KHOA HOC VA CAHG NGHE MO ^m CHON THONG SO KHOAN NO, XUC BOC TANG CAO PHU HOP v d l DIEU KIEN KY THUAT CnC MO THRN VUNG QUflNG NINH NCS LE CONG CUONG, ThS DO NGOC TUOC ThS BUI DUY NAM, KS VU filNH TRUONG Vien Khoa hgc Cdng nghg Md-Vinacomin Tong quan Cac mo than 16 thien vung Quang Ninh hi§n dang cip dung he th6ng khai th^c xudng sSu, thai ngo^i k^t hop vai d6 thai vdt d6ng bp thilt bj khoan n6-xCic b6c-v|n tai bao g6m: may khoan DM45, CBLU-250 du'cmg kinh 16 khoan tu 200-250 mm; mciy xuc gau thuan va gau ngu'p'c PC-1250, EKG -5A, EKG-81, EKG -10 dung tich g^u tCr d§n 12 m^ va t6 ty d6 c6 tai trgng I6n nhcit tO 55- 96 tin IWot nhu-ng th6ng so cija he th6ng khai th§c anh hu'd'ng d^n t6c xu6ng sau va chi phi san xuat la chiSu cao tang Hien tren cac mo than 10 thiSn cua cac nu'6'c nhu Nga, Uc, Canada chilu cao ting boc da dgt den 50-60 m Trong d6 chilu cao t&ng khai thae tr§n c^c mo 16 thien nu'6'C ta chf dgt tu* 12 den 15 m Viec boc d^t da vd\ chilu cao ting thip se c6 mgt so LFU, nhtfac dilm nhu- sau: • U'u dilm: + Cho ph6p si> dung c^c loai may khoan c6 du'b'ng kinh 16 kh6ng lan; + Vi^c thi cong cSc 16 co the thu'c hien blng nhilu chung ioai may khoan v^ nhilu phu'dng ph^p khoan nhu": dap-xoay, xoay-dgp v^ xoay cau; ã Nhu'p'cdilm: + TĐng so lu-ong 16 min, tong so met khoan va chilu s^u khoan them, + Tang thd'i gian thao tac phy {tho-i gian chit) qui trinh di chuyin v^ co djnh vj tri khoan khoan l5 v6i s6 lu-p-ng lo-n; + Tifiu tin phg ki^n n l ; + Khii lu'o'ng d i t Qi chuIn bj xuc bic nho, sd lln n l ldn ISm anh hu'dng d i n s5n xuit phai di chuyin thiet bj khdi phgm vi an toan n l min; + TSng khii lup'ng v$n tai phy trp- Tren CCT SCT nhOng phan tich nhu' tren, cho thay viec nang cao chilu cao ting bdc da la giai phap ky thuat quan trgng cin du'pc nghien cuu va ap dyng cho cac md than 16 thien Quang Ninh Chilu cao tang khai thae phu thugc vao nhom yiu td ehinh sau: •:• Dilu ki#n tu nhien: dd cung, mat 36 nut ne {muc d6 kh6 nl) •> Oilu kien ky thuat: san lupng bdc da thai, cong suit va kha nang cua khoan va xuc bdc cua mciy khoan, xuc • Dilu kien kinh t l : chi phi khoan nd, xuc bdc, vin tai nhd nhit Dudi day bai bao se lya chpn chilu cao ting hCTp ly theo muc khd nd, san lupng mo yeu clu, ddng bg thilt bj khoan Id min, xuc bdc va d l xuit cac thdng sd khoan nd ting cao cung nhu cac giai phap giam dudng khang chan ting, kich thud'e ding da n l cho cac md than Id thien vung Quang Ninh SLP phy thupc chtlu cao t i n g vao tinh chit d i t da va khdi lu'p'ng da boc Mdi quan he giCra duo'ng kinh Id khoan vdi chilu cao tang, H, nlm gidi han xac dinh theo[1]: Hmin ' 'mm ^ H < H m a K i 50ck; Hm3x = 100(l 200+250 mm v^ c6 chieu dai cin khoan ti> 32+40 m dang sil dung trSn c4c mo than hien se dam bao duoc yeu clu cho cong teic khoan 15 •:• Doi vol miy xUc: May xuc ducic \\;ia chpn theo tren co so dutcmg kinh 16 khoan vi tinh chit Off ly cua d i t da (hinh H.2) B i t da cua cac mo than lp thien vung H6n Gai thupc loai CO dp kho n6 vira vdi hp so kien c6 f=8+11, chpn mSy xuc cd dung tich giu xuc E=8+10, m^ C6n d6i vdi dat da cac mo than vung e l m Pha thupc loai kh6 no f=11+14, mSy xuc du'gc chpn co dung tich giu xuc E=12+15 m' , CANG NGHE MO 120 c 100 • • " " " ^ " ^ •s ^^''^^ ^.•""'''''^ ^ ^ • ' " ' ^ ^ ^ 80 g60 40 0: 20 ' ^ 7,5 Oung tich gau xuc, n Cac thong so khoan no 10 12,5 15 D u n g tich g a u x u c m H.2 Sl/ thudc dung tich gau xuc vao dwong kinh lo khoan bdc dat da cd cdng khac Cac thdng so khoan n l d u o c tinh toan va the hien d Bang va Bang H.3 Quan he gida tai d td (qo) va dung tich giu xuc (E) vdi cung dd van tai Bang Cong tiiuc tinh toan cac thong so khoan no Ghi chu Trong do: - Dung cua d i t da, tan/m^ dn- Kich t h u d c khoi nut ne trung binh, m; f - He so dp cu'ng cua d i t da; dK- D u d n g kinh Id khoan, m; - Nhiet lup'ng rieng cua t h u l c no s u dung, kcal/kg; dc Kich thudc CCT hat n6 Cdnq thuc tinh C&c thdnq sd ChJtieu t h u l c n l , kg/m^ „ 102{Y.d„)«(f.d)°'33 dc.Q C h i l u sSu 16 khoan, m , C h i l u dai cot bua, m L6=(l5-25)dK C h i l u dai cot t h u l c , m LT=LK-Lb H + LKT '^ D u d n g can chan t i n g (w) va khoang cSch giua cac hang (b), m Khoang each giua eac 16 khoan tronq hang sinp min,dc=(0,15-0,20)^'E , m, W=b= E - Dung tich g i u xuc, m^; [i - Gdc nghieng cua 16 khoan, dp m - He s l lam g i n giija cac Id khoan, m=1-1,2 , ^ \ q-H a = mb Bang Ket qua finh toan cac thdng sd khoan no cho cac md than 16 thien viing Quang Ninh Chi tieu CT via 7+8 HaTu CT via tru CD XN 917 Cpc Sau Cap Son Deo Nai 20 20 20 25 25 25 D u o n q kinh io khoan, m Dung tich gau xuc, m^ Kich thu'pc hat no min, m Chieu sSu khoan them, m Chi^u sSu IP khpan, m Chieu d^l cct bua, m Chi^u ail cct thu6c, m 200 10,5 0,37 200 0,34 22 17 250 12 0,39 250 12 0,39 2,5 27,5 21,5 250 12 22 17 200 10,5 0,37 22 17 He sc dp cung cua da ChitiSu thu6c nc, kg/m^ 10 0,32 10 0,36 Dud^ng can chcin tSng, m Khoang c6ch gii^a cac 15 khoan, m 9,1 10,8 8,6 10,3 Chi^u cap t i n g , m 2,5 27,5 21,5 12 0,38 8,3 10 0,47 9,4 11,3 12 0,47 9,4 11,3 CfiNG NGHIEP MO S6 - 0,39 2,5 27,5 21,5 11 0,46 9,6 11,4 [^^ KHOA HOC VA CdNG NGHE MO Quan he gii>a tai 616 (qo) va dung tich gau xuc cua may xuc {E) phu thu6c vao khoang each van tai xae djnh theo edng thuc: qo=(4,5.E + a ) C t l n (4) Trong do; E - Dung tich gau xue, m^; a - He s6 phu thupc vao dung tich giu cua may xuc (a=3 E>4m^); L - Khoang each van tai, km Cac bien phap giam diFffng can chan t i n g n l m i n t i n g cao Trong dieu kien dat da cu t h i ap dung chilu cao ting idn iim tang khoang each an toan tu mep ting din true may khoan, dd duo'ng can ch^n ting thudng ldn Day la nguyen nhan lam giam chit lug'ng dap VCT, phat sinh khli lug'ng da qua co" nhilu Qi giam dud-ng can chan ting cd thi su dung lo khoan nghieng vd'i gdc nghieng lo khoan hg-p vdi mat phlng nlm ngang thudc vao dilu kien thuc t l cua tung md va thong thudng tu 75-^85° eho hang diu tien, nang eao gdc doc sudn ting len den 85° Tuy nhien tai mdt s l khu vuc dilu kidn dit di phan ldp, mat nut ne ldn, muc dp ngam nude cao vao mua mua, 16 khoan d l bj sap dd Trong trudng hp'p d l giam dudng can chan ting ed t h i ap dung so dd nd kit hop (hinh H 3) iHx'"^), thi c i n phai hg thip dO cao eua ddng d l nd tr§n CCT SCT thay doi chi ti6u lup'ng thuoc nd dan vj, hole gdc nghidng lo khoan nnuH nuu I H C O N G NGHE MO truCTC dp dung cho cac m d than Id thien c i n phai bd sung nghien c u u cu t h i va chl t i l t n h i l u v l n d l h o n phgm vi ma bai bdo da d l cap, d i n g thdi xay d y n g eac phuCTng an nghien c u u thuc nghidm ngoai hi^n t r u d n g dam bao tinh thuc tidn va chinh x a c n T A I LIEU T H A M K H A O ! I 0,25 0,3 0,35 0,4 0,45 0.5 0,55 Chitlfeu t h u c n , k g / m ' b) Chieu cao dong da no min, m ! I I ; j [ PydgoB B.K MccneflOBaHMe flpo6MMOCTn ropHbix noppfl B3pbiBaMH Ha Kapbepax AUC ROKT TexH HayK.-M IVirM, 1971 412 c Ky3Hei40B B A , OdocHOBaHHe TexHOJiorwn 6ypoB3pbiBHbix pa6oT B Kapbepax t oiKpbiTbix ropHOCTpoMTenbHbix BbipadoTKax na ocHOse AecJDopMaMHOHHoro soHMposaHMfl sapbieaeMbix yerynoB flue AOKT rexH HayK M 2010, c 225 PenMH H.SI floflroTOBKa ropHbix nopo/; BbiewKe, MocEcaa, 2009 187 c P>KeBCKMM B.B ripoLieccbi OTKpbnbix ropHbrx paSoT M., Heflpa 1974 J Ngwdi bien tap: Ho ST Giao T h e paper offers the method estimating the proper parameters for blasting work, mucking work Vk^ith different equypment, machines of high output in open pit mining enterprises for Quang Ninh area PI15iM2il| H.5 Sl/ phij thudc ciJa chieu cao ddng da no vio chi tiiu thuoc no (a) vi gdc nghieng Id khoan (b) chiiu cao ting khac K i t luan • Ncing cao e h i l u cao t i n g bdc da cho eae m d than 10 thi6n vung Quang Ninh d a m bao nhu e l u tdng san lup'ng va giam gia khai thae than Id mOt v l n de mang tinh d p t h i l t • Khi n l c h i l u cao t i n g bdc da Id'n kdo theo vi§c lij-a ehpn d i n g bd t h i l t bi xuc bdc-vHn tai c6 cdng s u i t id'n, cho phdp giam m u c dg dip VCT yeu c l u giam (kieh t h u d c cue da no tang len), dd se giam d u a c c h i tieu thuoc n l ; giam s d lup'ng t h i l t bi xuc b i c , v ^ n tai vi tdng k h l i lup'ng d i t di c h u I n bj xuc b i c cho m0t l l n nd j *:* Vi$c ndng cao c h i l u cap t i n g se anh h u d n g tnjfc t i l p d i n hi$u qua san x u i t eua m d Do viy [ 1, O a m m e di v a o ciVa trade, khon ngoan luon qua ngo sau Tuc ngiy My Hay lay sU khon ngoan lam hanh trang cho ban suot cuoc hanh trinh cua cuoc ddi, vi d o la su" nang d d dang lin cay hdn moi tai san khac G Bizet C h u n g ta phai tiep thu va hoc tap nhCfng ngu'di di trade c h u n g ta va ca n h O i g ngu'di cung thai vdi c h u n g ta, Ngay ca thien tai CL/c ky v l d a i cung k h d n g the tien xa dUdc neu chl mud'n lay moi thir td the gioi noi t a m cua rieng minh G.V Gdt C o n ngacJi can phai co tri l u e , Chinh tri tue lam c h o b a n hieu rang chi song b l n lgy tri III tue thoi (thi s e j k h o n g du P.O Ranoa \ VTH swu tam J C A N G NGHIEP MO SO - ... for Quang Ninh area PI15iM2il| H.5 Sl/ phij thudc ciJa chieu cao ddng da no vio chi tiiu thuoc no (a) vi gdc nghieng Id khoan (b) chiiu cao ting khac K i t luan • Ncing cao e h i l u cao t i n... kinh khoan phai phu hpp vdi chilu cao ting, dupc xae dinh theo edng thuc (1); cac may khoan dupc lua chpn phai cd ehilu dai can khoan {U) dam bao dilu kipn: Trong do: LKT - Chieu sau doan khoan. .. dudi cd chieu cao blng 40-1-50 % chilu cao tang, no hang Hang thu cd thi Sp dgng Id khoan nghieng 85° hp|c 16 khoan dung vao dilu kien dja chit cu thi HSng cudi eung cua dai khiu duCTc khoan sau