Thfing tin khna hnr cong nghe mo NGHIEN CUU LITA CHON SO DO CONG NGHE KHAI THAC PHU HOP VOII tirng dang mo quang thiec sa khoang viing Quynh Hop, Nghe An In general, ore placers including stream tin o[.]
Thfing tin khna hnr cong nghe mo NGHIEN CUU LITA CHON SO DO CONG NGHE KHAI THAC PHU HOP VOII tirng dang mo quang thiec sa khoang viing Quynh Hop, Nghe An In general, ore placers including stream tin ore located In TS LU'U VAN THl/C Quy Hop district (Nghe An province) are soft and under shearTIlS DU'ONG TRUNG TAM ing form, so that it Is not necessary to be bnoken up by dnlling Vidn Khoa hoc Cdng nghe Md - Vinacorr^ and blasting operation and mechanization However, for reBidn tap: TS Lwu Van Thirc covenng resources, protecting the ecological environment and gaining the economic efficiency, the selection of the mining fowsheets suitable to the conditions of each mine is necessary Quing sa khoing ndi chung v l guang thiic sa khoing Iren dia ban huyen Quy Hop, tinh Nghe An I I cae dang cat guang d i t guang dang mem, thdng thudng khdng c i n l i m loi bang khoan nd v l co gidi Tuy nhien, de khai thic duoe tan Ihu loi da t i i nguydn, an loan, il Inh hudng din mdi trudng sinh thii v l mang 1^1 hieu q u i kinh l i , viec lua chpn so dd cdng nghe khai thic phii hop vdi tirng diiu kien me I I rat can thiit den edng nghe khai t h i c nhdm Iheo dac trung: Nhom I: Cae yeu Id t u nhien, bao gom: B|c diim dja hinh, dja m^p, dieu kiln DCCT va BCTV, the nam v l cau Inje thin quang, diiu kien Ihdi Hit, h|u Nhom 11: Cle y i u to ky thuit: Kieh thudc hinh hoc md, hudng md md, vj tri bai thai, ding bp thiit bi (DBTB) khai thacv.v Nhom Hi: Cle y i u Id ve kinh le, to ehirc, bao D i n h gia v i d i i u ki^n tip nhien, ky thuat gim: Kha ning tai ehinh de d i u tu thiil bj, cong CO anh hu'd'ng d i n lua chpn so* dd cong nghe t i e to chire s i n xuit, diiu kipn kinh te - xa hgi khai thac c i c md t h i i c sa khoing vung Quy khu md HP'P • Nhom cac yeu td ttr nhien co anh hudng Quang thiic sa khpang viing Quy Hop chu nhw sau: y i u d dang aiuvi, deluvi va eluvi, Chung nam - Cae y i u to v i dia hinh, (Sa map: Dja hinli, rai ric d nhiiu khu vuc Irong huyen va duoc tap d cic thung lung, sudn cae sdng, sudi dja map md sa khoang anh hudng tnrc tiep ldi vi#c lua chpn cdng nghe khai thic, BBTB khai va Irong cle hang easto Dja hinh khu vuc cd dang bang phang din dec tholi v l niii cao Dp thac, cdng t i e md md, Irinh tu khai thic, thoai cap tuyet dpi lir 400+IOOOm, eao nhit I I dinh Bii nude v l fhli biin Khang cd dp cao tuyet del 1085m Dja hinh khu - C l e y i u to ve DCCT Dae diim tang dSt vue nhin chung bi phin cat manh v l ed nhieu phu, linh chat co ly cua tang d i t chira qu|ng, dang dia hinh khie tang quang v l eae loai d l tang nam xen ke, phSn t i n trpng t h i n quang C i o y i u t i niy cd anh Tren eo sd dieu kien dja ehat, dia hinh v l hien hudng d i n on anh bd md, Id guong khai thic, trang khai thie ciia cle md, chp thay hi#u qua Inh hudng tdi dudng x l , ton that va Hm ngheo, khai thic eua cle md quang thiil sa khoing phy v.v thupc v i o chl tieu d i e trung cua c i u triic s i n trang thin quing nhu: Chiiu day than quang, - C i c yeu to ve DCTV: Anh hudng din cac gde cam, chiiu d i y idp dat phii, dac diem dia khiu cdng nghe: Xuc b6c,v|n III, thoit nudc, 6n hinh, diiu kien a a chit thuy v i n (BCTV), dja dinh bd md, an toin, to ehu'c s i n xuit Tgi cic chat edng trinh (DCCT), kha nang dau l u v l to md Ihiic sa khoing viing Quy Hop, cic dgng chirc san xuat thai ve BCTV ed I n h hudng Idn den hi|u qua B i thuan ti|n cho viec danh g i l mirc dp anh cdng t i e khai thac nhu vipc iya ehgn so hudng cd the phin ioai eic yeu to Inh hudng cdng nghe khai thie, t h i i l bj khai thic, on KHCNM S lOaOU - CXKTLQTIIIEN Thong tin khoa hpc cong nghe m d SSn pham thiec thdi xuSt khSu djnh bd mo, dudng xa van tai Ben eanh cdc tdc dpng tidu ci^c nhu tren, thi no eung cd anh hudng tich ci/c d i n qua trinh khai thdc mo khai thdc bing sue nudc * Nhdm cac yiu to ky thuat co anh huung nhw sau: Kieh thudc hinh hpe md Id thdng s6 quan trpng, Id cc so' xdc djnh cdng nghe khai thae, edc thdng s6 cua HTKT Chieu ddi, chilu rpng khai trudng anh hudng tdi kha ndng b l tri thiet bi, chilu rpng dai khiu, t i e day ngang, e6ng suit md Chieu sau khai thdc anh hud'ng tdi kit eiu bd md, so nhdm ting e6ng tdc, g6c doc bd cdng tdc, cdng suit md, toe dp ddo sau, thiet bj van tai Ngodi ra, thdng so HTKT (ehieu cao tang, chieu eao phdn ting, gde doc sudn ting, v.v ), OBTB khai thdc dugc ly-a chpn (thiet bj xuc - vpn tai, gpt, v.v ), hudng khai thac, sa d l eong nghp khai thae v.v edn anh hud'ng den chit lui?ng quang khai thae Vipe phan tieh cdc yeu t l ti^ nhien - ky thudt anh hud'ng den chit lugng qupng khai thac cd y nghTa quan trpng Tu dd, d l xuit edc giai phdp ky thu^t hgp ly, nham nang eao hieu qua khai thdc khodng sang thiec sa khoang Quy Hgp Phan lopi cac mo t h i l c sa khoang vung Quy H^p Hipn tpi, tren t h i gidi dang dp dyng cae phugng phdp phan lopi qu^ng thilc sa khoang ndi ehung va sa khoang thiec ndi rieng theo cdc tieu chi nhu sau - Phdn loai theo tudi va nguIn goc tao; - Phan loai theo cdc thdng so cua thdn quang; - Phan lopi theo tinh chat da tram tich (hdm lugng khoang san c6 ich, c& hat, he s6 na ro-i, dung d i t dd); - Phdn loai theo mue phuc tpp cua c i u trCic ^ a chit; - Phan loai theo vj tri phdn b6 (tren can, dual bien, vung ngap nudc); - Phdn loai theo tru lugng vd quy mo e6ng suit; - Phan loai theo v6n d i u tu xay dung Ngdy nay, e6 r i t nhieu quan diem cua cdc nha khoa hpc vd ngodi nudc ve viec phan lopi md khodng san d l phuc vy cdc mue dich khdc cong tdc tham dd, khai thdc, c h l bien khoang san, quan ly san xuit vd si> dung lao dpng Tuy nhien, cae phuang phap phan lopi ndy chua phan dnh d i y du edc dpc trung rieng eua cac md sa khodng thiec vung Quy Hgp de phuc vy cdng tac lya chon cdng nghp khai thdc hgp ly Ddc diem dieu kien tu nhien edc md sa khoang thiec vung Quy Hap deu cd nhij'ng diem tuang dong nhu: Clu true dja chit phuc tpp, the nim ngang - nghieng, phan b l rpng, dieu kien DCCT vd DCTV phuc tap Mpt cdeh tdng the, cd the thiy ring, dilu kien ty nhien cua edc md sa khodng vung Quy Hgp Id khdng thuan lgi eho sy phdt trien cua ngdnh cong nghiep khai thdc quang thiec nlu nhu khong cd su van dyng va eai tien hgp ly ede edng nghp va thiet bj khai thdc cho phu hgp vdi tirng dieu kien tu nhien cu thd cCia tung khoang sdng Theo kha nang ap dyng HTKT kh6ng vpn tdi, thai da true tiep vao bai thai va HTKT cd van tai cde md sa khoang quang thiec vung Quy Hap, cd the chia lam nhdm Nhom l-Ap dyng HTKT khong v$n tai: La nhOng md cd than quang mdng, the nam ngang vdi gde doc 5°, chieu ddy ldp phu mdng { dung may xOc (mSy gat) kit hop sire nirac Day chuyen cdng nghe sau mdy gat vd mdy xue tuang tu nhu eong nghe su dung mdy xuc kit hgp vdi sue nude Dac dilm sa cong nghe xem hinh - Cong nghe khai thac sie dung may xuc ket hgp van chuyen bang oto Cong nghe khai thae md bang may xuc kit hgp vdi van tai bang dtd la edng nghp khai thdc truyen thong da dugc su dung d hlu het edc loai khoang san tren t h i gidi, cung nhu d Viet Nam Cong nghe phu hgp vdi t i t ca cac dilu kipn tu nhien cua md, tu dan gian den rat phuc tap, Nhuge diem Idn nhit eua cong nghe la phy thupc nhieu vao dieu kien thdi tilt, eung vpn tai < 5km Viec lya chon cac thdng sd HTKT va DBTB cua cdng nghp ndy dua vao dae dilm dilu kipn tu nhien, ky thuat, quy md cong suit va eung dd van tai - Phan tich va lipa chgn cong nghe khai thac cho cac mo thiec sa khoang vung Quy Hgp Be lua chon cdng nghe khai thac phu hgp vdi dieu kien khoang sdng thilc sa khodng vung Quy Hgp, cd thd dua cac loai hinh cdng nghe nhu sau; - Cong nghe khai thdc bdng sue nudc dan thuan (CNKT1); - Cong nghe khai thdc bang sue nudc kit hgp vdi ca gidi (CNKT2), - Cdng nghe khai thac su dung mdy xuc kit hgpvdidt6(CNKT3) Vdi cdc day chuyen cong nghe nhu tren, chung deu cd nhi>ng uu vd nhuge dilm, xong KHCNM S6 10/2014 * CNKT LQ THEEN Sung bin nuuc; Bai thai; May xuc; MSyg Hinh Sa dd cdng nghe khai thac sO- dung mSy g^t, mSy xOc kit hap vai stic n\K!C vd'i cdng nghe dugc lya chpn chung phai phiJ hap vd'i tung dilu kien cua md dd hay nhdm mo dd * Uu diem: - CNKHT1: Cdng nghe dugc su dung co hieu qua doi vd'i nhung khu vi^c md e6 (^lu kipn d i t dd khdng c i n lam tai (cat, san vd eudi) hope nhilrng khu vuc d i t da cd cung nhd md dirdi dp lue cua sung ban nudc cd the pha v6 du'p'c chung den kieh thudc cd t h i dam bao vpn chuyin bing bam len duo'ng ong C6ng ngii? su dung d l van chuyen quang sau (3§ loai bd bd't dat dd, v l bdi va kho chua, vpn chuyen dat da den khu vyc bai thai (trong hope ngoai) - CNKT 2: Cdng nghe ndy khdc vdi edng ngh? bang sue nu6'c Id ket hgp vdi ea gio'i (may xuc, mdy gat) de thuc hIen khai thac d nhCrng l dung lao dpng Tuy nhien, cae phuang phap phan lopi ndy chua phan... thudt anh hud''ng den chit lugng qupng khai thac cd y nghTa quan trpng Tu dd, d l xuit edc giai phdp ky thu^t hgp ly, nham nang eao hieu qua khai thdc khodng sang thiec sa khoang Quy Hgp Phan lopi... kien hit sire can thiit Nd se gdp phan mang lai cdng an viee lam cho ndng dan khu vuc cle doanh nghiep thu hoi d i t eanh t i c de phuc vu cho san xuat cdng nghiep Be minh chirng cho van de Cdng