Thong tin khoa hoc cflng nghg mfl w sir CAN THIET AP DUNG THUT NGHIEM CAC i d KHOAN DlTOTNG KINH LOTN HA THAP IVil/C NirirC NGAM TAI MO QUANG SAT THACH KHE Thach Khe iron ore mine has the large reserv[.]
Thong tin khoa hoc cflng nghg mfl w sir CAN THIET AP DUNG THUT NGHIEM CAC i d KHOAN DlTOTNG KINH LOTN HA THAP IVil/C NirirC NGAM TAI MO QUANG SAT THACH KHE Thach Khe iron ore mine has the large reserves and mining ThS Lyu VAN THyc scale with the annual productivity of i- 10 million tons, ThS NGUYEN HUU HUAN approved by the Prime Minister In the development planning for our iron ore mining and processing sector For safety and Vlin Khoa hoc Cdng nghi Md-Vinacomin effective mining activities for ensuring the designed mining capacity, in the coming time, it is necessary to carry out the research on some key problems, in which, the pilot appiication of the underground water drainage boreholes together with the monitonng borehole system for evaluating the drainage capability and effectiveness of the boreholes proposed m the investment project Md sit Thpch Khe - Ha TTnh dyyc tham dd qua cac giai dopn: tim kilm ty nam 1963-I-1966, tham dd sy bd nam 1978, tham dd ty mi nam 1985 [1] Qga edc glai doan tham dd da xdo dinh t i n g try lyyng vd tai nguyen khu md Id 544 tripu tin Nam 2007, Vipn Gipronida (Lien bang Nga) da lap dy dn dau ty khai thac md sat Thpch khe vdi t i n g khii lyong quang thac dyyc khai thdc la 370 tripu t i n nguyen khai, dit bdc 662 trieu m^, day md kit thuc d mde -550m [2] San lyyng quang khai thac nam dau tien Id trieu tin/ndm, sau dd tdng Idn 10 tridu t i n va I n djnh d i n kit thiJc [4] Ddy Id md Ip thidn try lyyng Idn nhit tren ca nydc, khai thae sdu nhit, ndm sat biln Kit qua nghien cyu bydc dau cho thiy, md cd dilu kipn dia chit, dia chit thuy van (BCTV), d|a chit edng trinh thuoc loai phyc tap; ting d i t phd by rdi g i m cat, set, set pha trim tich sdng, biln day 26 -^ 227m, cd he s l thim Idn, 19 -;- 105m/ngay, lien thdng thuy lye vdi biln Ddng vd sdng Thpch Dong Theo [1], kit qua dytlnh lyyng nydc chay vdo md Id rit Idn, 1,42 tridu m'/ngdy Cung cac giai doan tham dd trydc da cd 15 Id khoan, khoan qua ting da hoa gle C2-P1 gap hang caety, kich thyde hang theo chilu thing ddng thay doi ty 0,8 + 5,6m Vi tri cde hang cacty theo cdc cap dp sau phan b l nhy sau: ty -100 + - 200m gap d 12 Id khoan, td -200 + -300m gap d lo khoan, ty -300 + -400m gap d 11d khoan Kit qua nghien ciru DCTV vi hang ddng cactc then gian qua Ty culi nam 2007 den nay, Bing Luvng mua va nude ngim chiy vio khai trudng hdc dit thu nghiem Nam 2008 Chideu Lwjng mua thdng (X),m (thing) 10 11 12 0,04 0,03 0,15 0,39 0,6 0,14 0,18 0,69 0,04 1,34 0,67 1,04 0,03 0,51 Didn tich 73,1 nu*c(F),10=m' Luyng nude mua chay vdo moong Qm W i T M i d n g Nam 2009 (thing) 3,2 104,0 108,3 109,4 130.6 218.3 247,8 272,7 287,9 310,2 349,5 350,5 365,6 351,6 3,0 16,7 42,2 78,4 30,3 43,4 187,1 10,7 415,3 233,6 363,8 11.0 178,9 Luipng nude ngim chdy vdo moong 216,0 230,8 296,3 316,2 326,3 327,3 266,6 126,6 264.2 196,6 167,5 147,5 117.6 224,6 Qn,10>rrf'/lhdng Ting, Wm'/thSng 219,2 233,8 312,0 3575 403,7 367,6 308,9 312,5 264,9 610,8 400,9 511,3 128,6 4035 KHCNM S 12/2012 • DIA CO MO Th6ng tin khoa hpc cong nghe md • i illiil Hinh Biiu dd quan hd giun hrong mua vti nude ch.iy vi mi Hinh Biiu dd Iheo ddi quan hi gida muc nude ngim vii luu luong mua Hinh Bd khai trudng phia Ddng siu 12-14mbi xdi trdi sau trin mua 70mm ( ngiy 31/5/2008) dyyc sy ding y cua Thu tydng Chlnh phu, Cdng ty C l phin sit Thach Khe da tlln hanh bdc d i t thy nghiem vd bdc d i t ting phu Ddng bp thiet bi bdc d i t thy nghiem gom may xue thuy Iyc g l u ngyyc cd dung tich gau ty 2-^ 4,5m^ dtd cd tai trpng ty 15-^37 tan Cdng tac thodt nydc d i n da du'ye thyc hidn bing hp thing bdm cydng bye cd tong edng suit 2170m=/h Qua trinh bdc d i t thy nghipm ddy md d i n mye -10m, trdn dipn tich 0,355km2 quan t r i e dyyc lyyng nydc chay vao md Idn nhat thang 3/2009 ldn tdi aiO.BOOm'/thang (bang 1) [5], bilu d l quan hp giya lyyng mya va nydc chay vao mo t h l hipn tren hinh Mye nydc ngim thip each bd moong khoang s 680m dyyc ghi nhpn tai gieng s i (gilng dan sinh), qua trinh quan trie tpi khu md eho thiy lyyng mya 8mm/ngdy lam myc nydc ngim tdng nhanh chdng (hinh 2) {5] Mye nydc ngim tdng nhanh sau cdc trpn mya Idn dd lam xdi trdi cdt, phd huy sydn ting bd moong phia Ddng khai trydng (hinh 3) Khi bde d i t d i n mye -10m, bdn kinh hp thip £ 680m, theo thilt k l , day md xuing tdi myc -550m bd m i chi cdch biln Ddng 500m, bdn kinh h9 t h i p myc nydc lan ring tdi 2765m Vdi dilu kidn dja ehit, DCTV khu md phdc t?p, d l danh gid dpng thai nydc ngim td biln, sing Thpch D i n g vd cde t i n g chda nyde ehay vao khai tnj'dng, ndm 2011 Cdng ty C l p h i n Dja c h i t vd Khodng san - Vinacomin da thi edng trpm quan trie (hinh 4) M i l trpm b i tri t y Z*i l i khoan, m i l KHCNM sfl 12/2012 * B|A CO Mfl Hlnh4 Sadd bi tri dc tram quan trie dja ehit thdy vin 15 khoan quan trie m|t dia ting chya nydc (hinh 5) nhy: ting chya nydc khdng dp Dp td (Q4), t i n g chda nydc ed dp trim tieh Op t d (Q3'), phdo hd ehda nyde trim tich Neogen (N), ddi chda nyde khe ndt dd hoa niM ne - eacto (C2-P1), ddi chya nydc khe ndt da hoa, da sdng xen da hoa ndt ne (D1.2), ddi chda nydc khe ndt dd granit Thong tin khoa hoc cflng nghe mo Viii^- i W' ndt ne va pha huy kiln tao (y4T3) [3] • • * Theo danh gia, nude ngam td ting da hoa vd da sdng cd hopt dpng cacty (C2-P1) chay p vao mdc -4C0m chiem 90,7% tong ddng chay vao md, tang Q chilm 1,73%, ting N chiem 7,6%) [1], Trong cac giai doan tham dd trydc da cd 15 Id 1 khoan qua ting dd hoa gic rV ' gap hang cacty, cd tdi 12 Id khoan gap hang cacty d khu vyc Ddng Bac khai trudng Khi ddy moong hp thap xuing dydi ^ Tuy^i) lo -100m vlpc bom hut hdng tram trieu mdt khoi nude khdi day Oidin i|o -• dia vai IJ moong se gia tang tic dp nude *j tham qua dia tang da hoa (C2Pi) vdy kha nang hoa tan rda lua trim tich (C2-P1) lam cho hoat ddng cacty song lai H/n/7 So 66 cdu triic id khoan Hinh Sa dd bd tri tuyen va phat then manh me Td cdc quan trie dia chat thuy van kliao sat dia vai iy dilu kien tren cin khao sat bo Bang? Tdng hop kdt qua d/a vat ly va tin lieu cac Id khoan gap hang cacto sung pham vi, dp sau, mdc phan bo hang dpng cacty khu Do sau gap hang vyc phia Ddng khu md, td dd, cacto (m) Ten to Ket qua tai lieu danh gid quy md cCia he thong TT Vi tri Be khoan Be dia vat ly hang cacty va dua cac giai Be mat mat day phdp phdng ching bgc nude tren dudi nham dam bao an todn cho D6'\ niit ne, ca qud trinh khai thac iwL i P \ lii k ' - 't -Ij - ;, ^J LK241 79-21 LK72B T18-16 LK271 Ngoai tuyen l^hao sat 154,9 ^ r 160 6,1 151.8 156.2 4,4 166,3 168,6 2,3 nat, dap ycf co kha nang phat trien hang Karst (NN-CN-DV.cacta) NN-CN-DVcacta 248 251,5 3,5 NN-CN-DV 376,2 377,9 1,7 Qua sau nghien cu'u LK239 T4-19 389.4 390.7 1,3 LK56A T2-27 140,4 141,5 1,1 NN-CN-DV LK235 T8-30 149,5 450.5 1,0 NN-CN-DV LK82B 717-31 143.0 144,0 1,0 NN-CN-DV LK.322 T6-366 193,0 216,0 23 NN-CN-DV-cacto " LK1022 T15-35 147.0 183.9 36,9 NN-CN-DV-cacto Kit qua khao sdt bang phuyng phap dia vat ly bydc d i u da dya kit lupn khu vyc cac hang cacty cd mat khu vyc nghien cdu cOng chi mang tinh chat a|a phucmg, cue bp, phdn b l rai rdc tyyng yng vdi cac ddi di thydng nhd da quan sdt dyyc (hinh 6) [3] Kit qua khao sat hang cacty bang phuang phdp dia vat ly vd so sdnh vdi mdt so lo khoan cij duyc the hien tren bang 2 Sy cin thidt phai tlln hanh xay dyng thd nghiem Id khoan thdo kho md Theo dy an dau ty Vidn KHCNtU s o 12/2012 * DIA CO MO W' Thong tin khoa hgc c6ng ngh^ m6 Hinh So dd cdng trinh thdo khd theo Du dn diu tu Vidn Giproruda ldp Giproruda va VioGem {Lifin bang Nga) lap, de hgn ch^ nu'o'c ngam tu Bien v^ sdng Thach Dong chay vac khai tru-ong, phai khoan day 16 khoan vong quanh moong khai thac (CO ti> 44 tai 159 lo khoan), \dp born chim bam hut th^p my-c nu'dc (hinh 7) Chi phi dau tu' de khoan c^c 16 khoan thao kho khoang 12 trieu USD, chi phi van hanh qua trinh khai th^c tai 400 trieu USD [2] Theo tinh toan, v$n hanh he th6ng 16 khoan thao kh6 nam dau tien, day moong Iu6n kh6 rao C^c nam sau cac 16 khoan se hut va bam khoang 3/4 lu'O'ng nuac ngam chay vao mo (hinh 8) Theo de xuat ve c6ng nghe, thoat nud'c ng^m b i n g he thong cac 16 khoan c6 chi phi rat lo-n, c6ng ngh$ nud'c ta chua co kinh nghiem Mat khac, viec thi cong va v#n hanh cac 16 khoan dja tang cua mo Thach Khe r^t l l 1' Luu luong nude nginf&hdy vdo moong khdng cd hd thdng thdo khd, 2- Luu luong nude ngim chdy vdo moong sau ed hd thdng thdo khd Hinh Quan hd giO'a luu lueng lueng nude ngim chdy vdo ddy md theo thdi gian khai thdc phuc tap, viec bao ve cdc Id khoan ndy qud trinh khai thdc (khoan nd min, xuc b6c, v^n tai) cung rit kho khdn Han nua, he th6ng l5 khoan thip nud'c ngim d^ xult du dn d i u tu Vi$n VioGem duo'c di^a tren ca so* tai lieu dja chit tham ti> nam 1985 M|t khdc, trud'C day chijng ta chua ti^n hanh bdc d i t thu nghiem khu mo, chua khdo sat h$ th6ng hang dong cacta bang phuang phdp dja v | t ly, cung nhu chua khoan quan trac DCTV v.v Do v|y, d l ddnh gid khd ndng chua nude n g i m dia t i n g khu md cQng nhu hieu qua t h i p mi^c nude ngim cua h$ th6ng l5 khoan se duo'c xdy dij'ng xung quanh khai trudng, c i n thilt t i i n hdnh xay di/ng mOt s6 l6 khoan thu nghidm Cdc !5 khoan t h i p mi^c nude ngam cd dudng kinh Idn (d = 800mm) thu nghiem duo'c van hdnh k i t Uqrp vdi h$ th6ng KHCNM S6 12/2012 * D U CO MO tram Id khoan quan trac dong thdi mM'c nude dd duoc xdy dung ndm 2011 se Id ea sd ddnh gia duo^c hieu qua l3 khoan t h i p mi/c nude ngim vd cdc thong so cua cdc l6 khoan'da duvc d l xuat dy an d i u tu [2]: dudng kinh l6 khoan, luu luorng 16 khoan, chilu sdu thilt k l , tri so hg thip mi/c nude tCrng l5 khoan thdo kho v.v ed phu hp'p vdi ^eu kien dia chit, OCTV cua md hay khdng Ket qua thu nghiem cae lo khoan t h i p mye nude ngim se Id ca sd khoa hpc d l lya chpn phuang dn thodt nude khai trudng hop ly cho md quing s i t Thach Khe Cg t h l la, c i n thilt phdi xdy dung h$ thing cdc Id khoan dudng kinh Idn xung quanh khai trudng nhu d l x u l t cua Vipn VioGem hay chi c i n dp dung cdng nghe thdo kho ddy md bing mdy bam truyen thong nhu cdc md Id thiSn vung Quang Ninh Thong tin khoa hgc cong nghe m o Ket lupn Md qupng sat Thach Khd cd trd lyyng va quy md khai thde vdi san lyyng ty 5+10 tripu tan/nam, da dyyc Thij tydng Chlnh phiJ phe duypt quy hoach phat thin ngdnh edng nghidp khai thdc, c h i biln qupng sat nydc ta D l khai thdc an toan, hieu qua vd dam bao cdng suit khai thdc theo thilt k l da dyyc phd duypt, thdi gian tdi, cin tllp tgc nghidn edu mdt s l npi dung sau: + Ap dgng thd nghidm cdc IS khoan thao khd, kit hyp vdi hp thing Id khoan quan trie d i danh gia kha nang vd hipu qua thao khd cua cdc Id khoan da dyyc de xult dy an diu ty + C i n tiip tgc tlln hdnh quan trie dpng thai myc nydc ngim tpi cdc trpm quan trie da xdy dyng, nen sd dgng cdng nghp quan trio ty ddng dpt i l khoan quan trie (diu ty ghi Diver) thay eho edng nghp quan trie thu cdng hidn tai d l ed dyyc chuli s l Iipu quan trac lidn tgc vd diy du hyn./ r d ; /ipu tham khao: "Bao cio tham dd ty my md sit Thach Khe" Tong cgc Dia chit 1985 "Dy in diu tw khai thic va tuyen quing sat md Thach Khe Hi Tinh', Vidn GiprorudaLien bang Nga 2007 Bdo cdo ting kit de dn Sdffi CHtifa HOfiN THIEN HE THONG t)iEU KHIEN SfiN XUm C Tiep theo trang 36) khau dap nghiin B02 de giam kich thude quang trudc dua tdi khau nghien mjn bang cac mdy nghien bi Cac thiet bj cdng nghe chinh khau Id bang tai, may dap, sdng phan loai va mdy cap lieu Cdc noi dung chinh thuc hien khau la: - Nang cap vd chuyen sang tieng viet phdn mem mdy chu SVR3, day Id mdy chu dong thdi eung Id may van hdnh cua khu xudng dap nghiin; khac phuc dudng truyin d i n kit n l i ve phdng dilu khiln trung tam - Xay dung lai chuang trinh dilu khien PLC xudng dap nghiin, phuc h l i cdc c h i dilu khiln ty ddng, lien ddng tu may tinh va dieu khiln tgi hien trudng; hipu chmh lai mpt so thilt bj ddng tai giam sdt nang suit cua may dap, mdy d p lieu vd bang tai bi hong va sai so Cac tinh nang dieu khiln giam sat duoc phuc hoi da h i tro' hipu qua cho phan xudng van hanh thiet bi nhjp nhdng vdi cac khau khac, cua Nhd may nhu khau nghiin min, khdu tuyin chinh Tai tram van hdnh khu dap nghiin, ngudi vdn cd t h l quan sat toan bo trang thdi cdc thiet bj cdng nghe cua Nhd may, ding thdi d cdc khdu cdng nghe khac cung cd the gidm sat toan bp trang thai khu dap nghiin Idm tang kha nang dieu hanh sdn xult ding bp, gdp phan lam "Khao sat dw bio hang dgng cacta y dja ting da hoa C2 P1 thude ind sat Thach Khd Hi Tinh bing phwang phip dia vat if LiSn danh Cdng ty Co phin Ty vin Xdy dyng Dpi Vipt - Lidn dodn Ban d l Oia chit IVIiln Nam (2011) Le Ode Phyyng' Bdo cao "Dy in khai thao vi tuyen quing sit md Thach Khe - Ha Tinh", Cdng ty C l phan Ty van D i u ty Md vd Cdng nghiep Vinacomin 2012 Lyu Van Thyc vd nnk: Bdo cdo ting kit d l tai "Theo ddi danh gii phuang in thir nghiim cdng nghd thi cdng treti nen cat vi set md quing sat Thach Khe", Vipn Khoa hpc Cdng nghd Md - Vinacomin 2008 tang hipu qua va an todn san xult II K i t luan Sau duac sua chua, nang d p , he thong da di vao hoat dgng chinh thuc dau thdng 12/2012 Toan bp cac phan mem giao dien dieu khien giam sat da duac chuyin sang tiing Viet todn bd, cdc tinh nang dilu khiln duac phuc hoi lai dung theo quy trinh cdng nghe nhd mdy va cd nhung dilu chmh cho phu hop vdi thyc t l , h i try cac cong nhdn van hdnh ding bd, thuan tien vd diddng han Mpt so thilt bi ludng quan nhu nhi§t do, dp suit, dp pH, dong tai cua Trung Quic duac thay the bang cdc thiet bj chat luyng tit, tu cdc nguon hang chu dpng nude da giup eho cac cdn bp va c6ng nhdn ky thuat eua Nhd may de ddng hieu chfnh, bao tri vd thay the./ KHCNM S 12/2012 * DIA CO MO ... tru-ong, phai khoan day 16 khoan vong quanh moong khai thac (CO ti> 44 tai 159 lo khoan) , \dp born chim bam hut th^p my-c nu''dc (hinh 7) Chi phi dau tu'' de khoan c^c 16 khoan thao kho khoang 12 trieu... sd ddnh gia duo^c hieu qua l3 khoan t h i p mi/c nude ngim vd cdc thong so cua cdc l6 khoan'' da duvc d l xuat dy an d i u tu [2]: dudng kinh l6 khoan, luu luorng 16 khoan, chilu sdu thilt k l ,... gian khai thdc phuc tap, viec bao ve cdc Id khoan ndy qud trinh khai thdc (khoan nd min, xuc b6c, v^n tai) cung rit kho khdn Han nua, he th6ng l5 khoan thip nud''c ngim d^ xult du dn d i u tu