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Thong tin khoa hoc cong nghe mo LITA CHON CONG NGHE KHAI THAC HOP LY m m m w khoang sang vang goc Sa Phin Van Ban Lao Cai M ^0Phin gold mine site belonging to Lao Cai province is one of 6 gold mine si[.]
Thong tin khoa hoc cong nghe m o LITA CHON CONG NGHE KHAI THAC HOP LY m m w m khoang sang vang goc Sa Phin - Van Ban - Lao Cai M ^0Phin gold mine site belonging to Lao Cai province ThS VU CHAU TUAN is one of gold mine sites in Vietnam that will to KS NGUYEN VAN KIEN suiveyed and invested for mining with the annual Vi^n Khoa hgc Cong ngh^ Mo - Vinacomin isiSpacity of 3.25 tons in total In this paper, the authors produce the specifications such as the geological mining conditions and the gold reserves of the mine Basing on these data, the paper provides two proper mining systems for this mine site Theo Quy hoach phan vung tham do, khai thac, c h i bi6n va SU' dung qugng vang, d6ng, niken, molipden Vi#t Nam den nam 2015, co xet den nam 2025 da du'p'c phe duy#t theo Quyet dinh s6 11/2008/QO-BCT 05/06/2008 cua Bp tru-ang Bp Cong Thu-ang, giai dogn 2008 ^ 2015 khu mo qUang vang Sa Phin, l\/linh Lu'O'ng la mpt diem mo quang vang ca nu-oc se du'p'c day manh cong tac tham va dau tu* khai thac v6i cong suat khoang 3,25 tan/nam (Sa Phin, IVIinh Lu-ang -Lao Cai; vang goc A Vao - A Pey tinh Quang Trj va ThCra Thien - Hul; Tra Nang tinh Lam Dong; Bong IVIieu va Dac Sa tinh Quang Nam) Thyc hien quy hoach tren, tCr nam 2003, T6ng Cong ty Khoang san - Vinacomin da chu tru'O'ng tham va du-a vao khai thac mo vang goc Sa Phin Tru-ac day, khu mo da duac Vien Dja chat Khoang san phat hien qua trinh ve lap ban dja chat ty le 1:50.000 vung Tu Le - Van Ban Cong tac tim kiem tham dja chat vung mo 6\jeac bat dau vao nhu'ng nam 1995^-1997 Nham chuan xac lai tai nguyen, Cong ty C6 phin Khoang san 3- Tong Cong ty Khoang san-Vinacomin, da du'P'c giao thyc hi#n thi cong de an "Tham vang g6c khu Sa Phin Van Ban, Lao Cai" Khu tham thupc dja ph|in ban Sa Phin, xa N|im Xay, huy^n Van Ban, tfnh Lao Cai co di#n tich tham 1,22 km^, d6 khu Sa Phin orkm^ va khu Tsuha 0,16 km^ Den nay, cong tac tham theo de an noi tren da hoan thanh, qua trinh tham da phat hien 06 than quang vang goc: 14, 15, 17, 18, 18A, 19, vdi tru" lu'p'ng quang vang goc khu Sa Phin du'P'c xac djnh la 1.800 kg (ham lu'p'ng vang trung binh 5,71g/t4n) Trong ranh gidi, khu mo da bj khai thac trai phep nhieu nam tru'dc vdi quy mo Idn cho nen hau h i t phin tren mat mpt so cac than qu|ng da bj khai thac h i t theo chilu sau tCr vai met d i n 50m ^ 60m, ca bi#t d than qu|ng 18 co ch6 d i n 100m (tinh tiy Ip via) Cac khu vyc bj khai thac trai phep chij y l u nam d g i n b l mgt dja hinh Nhin chung, cac than qugng c6 dac dilm chilu day than qu|ng tCr mong d i n trung binh, biln doi tCr 1,03 ^ 2,03m, trung binh 1,62m; goc doc dCpng 75° 4- 80°, chilu day va goc doccac than quang I n djnh Da vach va trg c^c than qugng tu-o-ng doi on djnh, s|p d l trung binh d i n khd s i p Ting hp-p trCp lu'p'ng dja chat trpng ranh gidi 4 0,5 ^ 0,8m3 Tren ca sd kinh nghidm khai thac tren t h i gidi vd tgi Vi|t Nam, qua ddnh gia dilu ki#n dja chat cua cdc than quang khu mo vdng g l e Sa Phin, Vien KHCN Mo da Igp dy an khai thdc mo vang Sa Phin va de xuit h# thing khai thdc dp dyng eho khu mo, bao gom: H# thdng khai thac budng chia lap ngang chen Id bing da trg H$ thing khai thdc chia ldp ngang k i t hgp vdi chen 16 bdng dd tn^ dugc dp dyng khai thac cho d i l u ki^n cdc thdn qugng d i e dung co chilu ddy trung binh, qu|ng co dp b i n vung Idn, d i t da xung quanh kem b i n vung, mgt tilp xuc giua dit dd vd qugng tuang d i i diu, than qugng khong chua kep, gid trj kinh t l cua qugng Idn (hinh 1) - Cong tac chain bj: Chuin bj theo ting vdi chieu eao ting t u 30 -e- 35m, chia t i n g thdnh cdc ept khai thdc vdi chilu rpng t y 30 H- 60m Dao 16 van tai, Thong tin khoa hoc cong nghe m o MATCATA-A Guttig khai thflclagig w dscyb IMngflb Ld doc via thQitg gtb I Guongldiai ttiAcK) Oia cMnJthOig ^nkhaith^ LO doc via v ^ Ifi Vlhudnn cOHkhta iBachankhOc^itilafi IJiaH>ac Hinh H^ thong khai Vide buong chia I6p ngang chdn Id bang da try MAT CAT A -A LOdpcvbBiOnggi6 U> dpc via phan tSng sg LadpcvlaphantSngsdZ L6 doc vfa phfln t3iig ad Lft doc vb van tS tflng Ah— " ^ P h f l n g l t i a o quang H/n/) He fAiong Af/;a/ fA7ac pha no phan tang phan tang dugc dp dyng th6ng gid ting, tu d6 md cac 16 quang va da khoang ^ 3m) thugng cot (thugng buong c6 Cong tac van tai: Qugng dieu kien than qugng c6 chieu the dao trude hoac ddo eung sau pha no ty trugt tren mat day trung binh doc dung, dat da vdi tiln dp khai thac) Khai thdc phang nghieng eua nIn vgt li^u va qugng thupc logi bin vung, khii tam gidc d day cua buong chen (nen dugc lot t6n 6e trdnh kho sap d l (hinh 2) 6e tgo mat phdng nghieng eho hi#n tugng mit mat qugng) vd - Cong tac chuan bj: Ting guang khai thdc xuing khoang vgn tai qugng khai thdc dugc chuan bj vdi Cong tac khai thac: Khai eua 16 thugng buong (khii) chieu eao 25 -^ 35m, tu 16 dpc thdc theo cac Idp nghieng, vdi Cong tac thong gio: Gio via vgn tai qugng tien chilu ddy mil Idp tu 1,0 •^ 1,5m sgeh tu' 16 van tai qua thugng hdnh ddo cdc 16 thugng ept theo hudng tu dudi len tren ept len thong gi6 cho cdc phdn chia tang thdnh ept khai thdc bang cdc 16 khoan nho ting khai thdc, gio thai thodt vdi ehieu rpng ept tu 40 ^ 60m Cong tac chen Id: Dugc thyc theo 16 thugng ept len 16 dpc via Tu 16 thugng ept, tiln hdnh ddo hien cung vdi qua trinh khau cac 16 phan ting d l chia ting thong gi6 vd thodt ngodi quang, da chen dugc lay tCr vi$c thdnh cac phan ting vdi chilu He thing khai thac pha khau md rpng dd try vdi chilu eao m6i phan ting -H m L ddy khau md rpng ty -5- 2m n l phan tdng phdn ting dudi cung dugc dao (tong chilu day khdu ca than He thing khai thdc pha n l KHCNM S6 3/2012* CNKT HAM LO Thong tin khoa hQC cong ngh$ mo each 16 dpc via vgn tdi t i n g t u ^ 3m Be thu h i i qu|ng bulng khai thdc, tiln hdnh ddo cdc 16 thdo qu^ng (hpng sdo) tu 16 dpc via len 16 phdn t i n g dudi cung cua ting, khoang cdch giu'a cdc hpng sdp tu + 8m vd dugc ddo theo t i l n dO khai thdc eua c|t Cdng tic khai thdc: Qu^ng eung eua e|t vd dugc thdp qua 16 n i i (c6 l i p eua thdo) xuIng phyang ti|n v$n tdi tr§n 16 vHn tai, sau d6 dygc v$n chuyin " ° ^ ' "^^t bing eua 16 - Cdng tic thdng gid: Gi6 sgch tu 16 dpc vfa v^n tdi qua thugng thdng gid cua c|t I6n thong gid cho cdc phdn ting khai ^hdc, gi6 thdi tu cdc phdn ting khodng san Id qugng vdng co gid trj kinh t l eao thi viee lya chpn dp dyng HTKT hgp ly, ddm bao an todn, hi|u qua, gidm h | s i t i n thit, lam ngheo qu$ng qud trinh khai thdc '^ ^^^ ^^^^ ^ ^ " t^'®*Tu cdc k i t qua phan tich tr§n cho thiy, dilu ki^n m6 qu$ng vdng g l e Sa Phin dugc khai thac theo cdc 16 '^^^' ^^^^ ^^^^^ ^^^° '^ ^^^ ^^^ phdn ting bing cdch n l ^hdng gid cua d t thodt ngodi T i n g hgp so sdnh uu, cdc 16 khoan dudng kinh nho, chilu ddi 3m Cdc phan nhuge dilm vd mOt s i chi ti6u ting dugc khai thdc ding thdi kinh t l - ky thudt ca ban hogc n i i tilp nhung phdi dam dilu ki^n m6 Sa Phin cua hai bao khoang cdch vugt trude he thing khai thdc (HTKT) n6i eua phdn ting tren so vdi phdn tren dugc t h i hi|n bang ting dudi t i i thieu tu' ^ 5m vd - Cdng tac v$n tai: Qugng Vdi myc tieu khai thdc an sau phd n l d guang t y todn, hieu qua, giam t i n thit tdi chay xuIng 16 phdn t i n g dudi nguyen t i i da, dge biet vdi Bing So sinh mi, nhirtyc diem cua HTKT "-^^ ^ ^ ' ' ^^ *^^' P^^^^Q ^ " c6ng n g h | d i u c6 t h i dp dyng Tuy nhifen, HTKT budng, chia '6p ngang, chin Id bing da try c6 nhilu uu dilm vd Igi t h i hgn e6ng tdc chuin bi dan gian, dp dyng thu^n Igi vd linh hogt d i l u kien cdc thdn qugng eo sy biln d i i chilu d^Y••• Han nua, he thing khai thdc ndy co he s i Idm ngheo vd muc dp t i n thit qugng thip TT sinh C6ng tac chuin bi HTKT buong chia i(rp ngang HTKT phi no phin tang Dan gian Phtpc tgp - Ap dyng cho dieu ki$n thdn qudng cd chieu I xuAij.iL.u»x u - ddy khoang tif 2- 6m, hi^u qua nhdt ^^ ^ Ap dung thudn Igi vd cd kha ndng khai ' , ^ , ^ J* ^.^^^i ^ ^ \ ^•'' l ' " ; ^ " ^ thdc linh hogt dilu kl^n thdn qudng I * : r ^ ^ * ° ' " l ^^ ^ , ^ " f ^ / ^ ^P ^"^"9 bi^, ^.j ^^,i^^ d^ ,^, ki$n thdn qudng mong han (1.2-1.5 m) nhl6n, chieu ddy qud mong h$ so ton thdi I vd Idm ngh^o qudng Idn - Cdng tdc khai thdc chu dOng, cd thi khai thdc \ chpn Ipc, h$ s6 ldm nghdo qudng thdp _ ,^ , ,s , , ^ i » ^ ^ '' ^ *' Cdng tdc khoan l6 vd ngp thulc thudn - Chu dOng vi$c kilm sodt tinh trgng, , bin cua HTKT So lu-g'ng Ten chi tieu TT Den vj HTKT buong chia ldp ngang HTKT phi no phin tang 1,62 Chieu ddy trung binh thdn qudng m Op kidn CO cua qudng f 6^ dd Tln/m3 70 -^ 80 G6c die thdn qudng i The trpng qudng ' Chilu cao trung binh khii khai thdc 3.06 i- - 30 m 1 35 50 1.2 2,1 T/ng-ddm 60 75 Tin/ thdng 1.500 1.875 Tdn/ndm 18.000 22.500 Chieu rOng trung bInh khii khai thdc m Tiln dd khiu gu-ang mOt chu ky m ; , Thdi gian hodn thdnh chu k^ khai thdc '' San lupng khai thdc mOt ngdy ddm 10 San lugng khai thdc thdng 11 : C6ng suit Id chg ca ! 12 Chi phi thulc no kg/tdn 1.7 1.8 13 Chi phi kip no cdi/tin 2,2 1,9 14 Ndng suit lao d6ng tryc tilp Tln/c6ng 2,4 2,6 15 Chi phi met 16 chuan bj i 20^25 40•^50 ^'"'" IOH-12 15H-18 16 '• Ton that cong nghd han qua trinh khai thac TCF dd, nhom tac gia dy an lua chon dp dung HTKT buong chia Idp ngang chen 16 bing da tru cho khu mo vang Sa Phin Ldo Cai Kit luan m/tan % _i K i t qua d l xuat da 6e Tai lieu thaw khao: Phucng hudng dau tu va phat ^ ^ ^ ^ ^ ^ ^ ^ ^ ^,^,3 triln cong nghe nham dap Cpng ^^^.^ ^^^ ^ ^^ ^^^ ^^^^ ^^ Vf" cau san xuat va phat tnen ^.^ ^^^ ^^ ^ ^^x^ ^^^ ^.^ ben vung eua mo nhung ^ ^ ^ ^ ^^^^ ^^^ ^.^^ ^^^ ^^^ "^m tdi Tuy nhien, eae ^^^^ ^ ^ ^.^^ ^^^^ ^"^ ^ ° ^ ° " ^ P^^\ ^% T !"" Van Ban Lao Cai 2011 Cdc kit qua phan tich, danh qugng d i n cdc khau e6ng nghe Do M^nh Phong Giao gid vd d l xuit sa c6ng nghe phy trg Vdi myc tieu giam t i n trinh khai thac quang bing khai thdc cho mo qugng vang thit tdi nguyen, nang eao hieu phwongphap ham Id, NXB Xay gle Sa Phin Van Ban Lao qu^ khai thac, tdng nang suit di/ng, Ha Ndi 2001 Cai phu hgp vdi dilu kien dja ,ao dpng, cai thien dilu kien ^-gd-skSp Khai thac cac chat-ky thuat mp eua khu vyc iam viec vd nang eao mCrc dp ^^^.^^ ^ ^ „ ^^^^g ^^ p^,Viec dp dyng cac sa d6 cong gn toan eho cong nhan khai ^ ^ g „^^^ ^x^„ / j ^ ^ ^ nghe neu tren dam bao dieu thac, thdi gian tdi, c i n l^^g^gg^ kien an todn va eho eae ehl tieu tj|p tyc xem xet, dp dyng ca ' ' ^ Imen-nhit-top V.R Cac kinh t l - k y thuat tuang doi eao, gjai h6a khai thdc khu vyc nay, nhit la vdi sa c6ng nghe lam tiln d l md rpng dp dyng quy trinh cdng ngh$ khai thac khai thac buong, chia l&p cho cdc khu vyc khac e6 dilu ham Id cac khoang sang ngang, chen Id bang da tru kjgn tyang ty / Quang NXB "Ldng dat" 1984 KHCNM S6 3/2012* CNKT HAM LO ... e Sa Phin, Vien KHCN Mo da Igp dy an khai thdc mo vang Sa Phin va de xuit h# thing khai thdc dp dyng eho khu mo, bao gom: H# thdng khai thac budng chia lap ngang chen Id bing da trg H$ thing khai. .. xl nghiip khai thdc qugng vdng g l e nhu Nd Pdi (Lgng San), Trd Duang (Quang Nam), VTnh An (Ding Nai) Cae mo qugng h i m 16 nude hi|n chu y l u khai thac vdi quy mo nho, san lugng khai thdc... m Tiln dd khiu gu-ang mOt chu ky m ; , Thdi gian hodn thdnh chu k^ khai thdc '''' San lupng khai thdc mOt ngdy ddm 10 San lugng khai thdc thdng 11 : C6ng suit Id chg ca ! 12 Chi phi thulc no kg/tdn