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Hpi nghi khoa hoc ki thudt md quoc te 2010 Cong nghiep mo tien tien vi su phdt trien ben vung A P D U N G N H L T N G M O fflNH Q U A N L Y K H A I T H A C T I E N T I E N C H O C A C M O D A V O I C[.]
Hpi Cong nghi khoa nghiep mo AP DUNG NHLTNG M O CHO hoc tien ki thudt tien fflNH md quoc vi su phdt te - trien 2010 ben vung Q U A N L Y K H A I T H A C TIEN TIEN CAC M O DA V O I CUA N G A N H CONG NGHIEP X I M A N G VIET ThS Do Manh Cuong , PGS.TS Biii Xuan Nam (a) N A M (b) ( a ) C o n g ty T u v a n D a u t u Phat t r i e n x i mang, V i e t N a m ( b ) T r u o n g D a i hoc M o - D i a chat, H a N o i , V i e t N a m Tom tdt: Tong Cong ty Cong nghiep xi mang Viet Nam (ViCem) la nhd sdn xudt vd cung img xi mang lan nhdt tai thi trirong Viet Nam, ViCem so huu cong ty sdn xudt xi mang vai cong sudt khoang 17,05 trieu tan xi mdng/ndm Hdng nam, ViCem khai thdc khoang hon 24,5 trieu tan dd voi phuc vu sdn xudt xi mang Viec tim kiem, khai thdc, ma rong vd quan ly vimg dd voi cho sdn xudt xi mang theo each hieu qua nhdt Id het sue can thiet Trong bdi viet, cdc tdc gid de cap tinh hinh quan ly khai thdc dd voi hien tqi cua ViCem vd de xudt dp dung cdc mo hinh quan ly khai thdc tien (ien de cai thien viec kiem soat chdt luong dd voi vd nang cao hieu qua khai thdc cdc mo cua ViCem Tir khoa: Sdn xudt xi mang, mo dd voi, mo hinh quan ly, ke hoach mo Gioi thifu chung ve hien trang khai thac da voi cua ViCem 1.1 Cdng sudt khai thdc dd vdi cua ViCem H i n h d u o i day la bieu m o ta m o i quan he g i u a san l u o n g x i mang v o i k h o i luong da v o i va dat da thai cua V i C e m B i e u chi rang: k h o i l u o n g da v o i va dat da thai tang dan hang nam v o i su phat trien san l u o n g x i m a n g cua T o n g C o n g ty San lirorig • Da thai • Da voi • Xi mang 0.000 5.000 10.000 15.000 Tri^u tin 20.000 25.000 30.000 Hinh 1- Sdn lupng xi mang, dd vdi vd ddt dd thai cua ViCem giai doan 2000+2009 1.2 Hoat ddng khai thdc md M o t he thong khai thac ( H T K T ) da d u o c t i l n hanh b i e n cho cac m o da v o i a Viet N a m la H T K T khau theo lop bang 183 Hoi Cong nghi khoa nghiep md hoc kT thudt tien tien mo qudc vi su phdt triin ti bin 2010 virng H i n h m i n h hoa sa H T K T khau theo l a p bang H T K T d u g c t h u c h i e n bang each cat tang theo t u n g l a p n a m ngang lan l u o t tir tren d i n h x u l n g T r o n g H T K T nay, dong da no m i n d u g c m a y xuc chat len to t u do, v a n chuyen v l t r a m dap V a i dac d i e m ciia H T K T khau theo l o p bang, cho phep tien hanh no cac bai m i n l a n va ap d u n g n h u n g t h i l t b i co cong suat l a n D a y la l y v i H T K T k h a u theo l o p bang d u g c ap d u n g bien va hieu qua cho cac m o da v o i cua V i C e m Cac t h o n g so ca ban ciia H T K T dugc t h i hien bang Bang 1: Thong so cua HTKT Thong khau theo ldp bang, van tai true tiep bang d td tu so Gid Chieu cao tang ( H , m ) tri 10 + 15 Chieu sau 16 k h o a n ( L , m ) 11,5 + 17,5 Chieu rong mat tang nho nhat ( W j , m ) m 40 n Goc nghieng suon tang (a, m ) 70 ^ ° K h o a n g each hang (S, m ) 3,5 + 6,6 D u o n g can chan tang ( B , m ) 3,5 + 7,7 *?' — 0,30 + 0,45 So hang 16 k h o a n (n, r o w ) C h i tieu thuoc no ( q , k g / m ) D o n g bo thiet b i co ban sir dung cho H T K T d u g c liet ke d u o i day: - B i i a k h o a n con, d u o n g k i n h < 46 m m - May khoan Ion, duong kinh mui khoan < 250 m m - M a y nen k h i , c o n g suat < 25 m /phut - M a y xiic dao, d u n g t i c h gau < m - M a y xuc lat, d u n g t i c h gau xuc < m - M a y i i i , cong suat banh da < 400 H P - B u a pha da t h u y l u c , l u o n g (ke ca may co so) < 40 tan - T r a m dap, c o n g suat < 500 m / h - O to t u do, tai t r o n g < 50 tan Trong t r u a n g hgp gap dat da thai qua trinh khai thac, chung dugc loai true tiep ma khong can x e m xet lieu chiing co the dugc sir dung n h u mot loai nguyen lieu tho co Hinh 2: So HTKT khau theo ldp bdng, van tdi dd bang d td tu 1- May xuc, 2- Oto, 3- May khoan chat luong thap, co the dung de phoi tron V i vay, cac m o da v o i ciia V i C e m da loai khoang 5+15% ciia tong k h o i l u g n g hoat dong khai thac m o i nam 1.3 Tinh hinh quan ly khai thdc dd vdi D u a vao ket qua khao sat va t h a m k h u vuc n g u y e n l i e u tho t r i e n v o n g , cac nha t h i l t k l m o thuc h i e n t h i l t k l m d v i a va quy hoach khai thac m o T h o n g t h u a n g , nhung thiet ke c h i i yeu chi n h u n g he so co ban ban dau ciia hoat d o n g k h a i thac m o nhu: so 184 Hoi Cong nghi nghiep khoa hoc mo tien kT thudt tien md quoc vi su phat te - trien 2010 ben vung lieu h i n h hoc m o , cong tac an toan, ke hoach k h a i thac, t i e u hao nang l u g n g , thiet b i k h a i thac m o m a k h o n g quan t a m den chat l u g n g cua tang p h u v a dat da thai x e n kep t r o n g da v o i , mac d u n h u n g n g u y e n l i e u co the sir dung n h u n h u n g loai n g u y e n l i e u chat l u g n g thap, diing de p h o i t r o n v a i n g u y e n l i e u co chat l u g n g cao B e cung cap da v o i co chat l u g n g p h i i h g p cho san xuat x i m a n g , hang nam cac m o da v o i cua V i C e m da l o a i khoang 1,1+3,8 t r i e u tan da v o i chat l u g n g thap N e u chi p h i loai bo tan da v o i chat l u g n g thap khoang 1,2 U S B , t h i hang n a m V i C e m phai t o n khoang 4,56 t r i e u U S B cho cong viec M a t khac, hang n a m cac m o da v o i ciia V i C e m cung phai chi m o t k h o a n t i e n kha l a n cho viec xir l y cac hang casta Hau het cac cong t y v i e n ciia V i C e m k h o n g co he t h o n g quan l y chat l u g n g nguyen l i e u tho t h o n g nhat, cung n h u k h o n g co bat cir c h u a n g t r i n h ap d u n g he thong quan ly nguyen l i e u tho nao G i a m doc m o t h u a n g g i u t h o n g t i n cua m o K e t qua la rat kho k i e m soat hoat dong k h a i thac m o , chat l u g n g da v o i , quan l y dat da t h a i , c o n g tac an toan rao, kha nang san xuat ciia m o v a ke hoach hoan nguyen m o i t r u a n g G i o i t h i e u m o h i n h q u a n l y d a v o i t i e n t i e n - B l o c k m o d e l B e k i e m soat h i e u qua viec k h a i thac da v o i v a g i a m t h i e u n h i r n g d i e u k h o n g chac chan va r u i ro, can phai co ke hoach dai han Tat ca nhirng g i o i han can thiet, cung v o i m o t lugng I o n so l i e u va t h o n g t i n can phai dugc dua vao t r g n g ke hoach san xuat ciia m o So cac b u o c thuc h i e n m o t d u an ve nguyen l i e u tho n h u sau: y Khao sat ~y yDanh gia va y y Hoat dgng y £_ / / guy hoach D j a hinh M d h i n h khoi / / / Ke h o a c h Trung han Ke hoach dai han • D j a chat Khoan KH ngan han Thiet ke m d ^ Mo h i n h dja chat Giai p h a p Hoat dpng , ^ ^ ^ Hoat d o n g ciia m d da H a u het cac hoat d g n g t h a m v a k h a i thac da d u p e the h i e n t r o n g m o h i n h k h o i Trong m o h i n h nay, tat ca n h u n g dac d i e m c h i n h ciia m o da d u g c sap xep m o t each ro rang va theo h u o n g de sir dung Chat l u p n g cua san p h a m v a h i e u qua hoat d p n g ciia m o dupe the hien qua cac cong viec: t h a m do, d u an n g h i e n c i i u kha t h i , thiet ke x a y d u n g v a k h a i thac va cac hoat d p n g k h a i thac m o 185 Hdi Cong nghi khoa nghiep hoc md tien ki thudt tien md qudc vi su phat te - triin 2010 bin vung The nao la m o h i n h k h o i ( b l o c k m o d e l ) than khoang sang? D o la viec m o ta ciia mot than quang bang toan hoc T h a n quang d u g c chia cac v i k h i nho d i u dan h i n h lap phuomg hoac h i n h hop c h u nhat M o i v i k h o i dai dien cho m o t d o n v i quy hoach; no chiia d u n g n h u n g t h o n g t i n ve t i n h chat cua n g u y e n l i e u tho n h u phan hoa hgc, l o a i dat da, cac dac d i e m dia chat n h u d i i t gay, u o n nep, ( h i n h 3) Be mat flja hinh Hinh 3: Minh M o hinh khoi hoa mot md hinh khdi dd duoc thuc hien G i a t r i ciia cac v i k h o i rieng biet t h u o n g d u g c n g i suy tir cac so l i e u t h a m khac da biet bang cac thuat toan dia chat p h i i c tap Can c i i vao n h i r n g t h o n g t i n tren, co the mo ta dugc h i n h dang ciia than quang, cung n h u danh gia dugc trir l u g n g v a phan bo chat lugng than quang C h i i c nang dugc str d u n g t r o n g rat n h i e u cho viec danh gia than quang va lap ke hoach k h a i thac m o M o h i n h k h o i ket h g p chat che t r o n g viec danh gia than quang v a lap ke hoach khai thac m o dugc m i n h hga t r o n g h i n h He t h o n g co y n g h i a dac biet t r o n g viec nang cao pham v i va kha nang ciia m o h i n h k h o i T h o n g t h u o n g , m o i quan he g i u a than quang va viec lap ke hoach k h a i thac m o bao g o m he t h o n g p h u c h i i y e u sau: 16 k h o a n v a so lieu tham co ban, so l i e u phan t i c h va t r i n h dien, xay d u n g m o h i n h k h o i , t i n h toan t r u lugng va thiet ke m o Ho khoan va So lif u khao sat co ban Thong ke \ Npi suy Md hinh khoi Trir luong Ke hoach toi uu hoa md Hinh 4: Cdc he thong phu cho viec danh gid than vd lap ke hoach khai thdc md 186 quang Hpi Cong nghi nghiep khoa hoc mo tien kT thudt tien mo quoc vi su phat te - trien 2010 ben vitng Co so dir lieu bao gom tat ca cac loai so lieu tham nhu: du lieu dia chat tir cac lo khoan, cac hao t h a m do, hoat dong k h a i thac m o , C a sa d u l i e u co t h i chua s i lieu khao sat tir cac ho k h o a n va so l i e u phan t i c h phan hoa hoc t r o n g cac lo khoan C a sa dir lieu co the cung cap c h i n h xac va co he t h o n g cac tap h o p m a u v a nhirng s i l i e u khac cho cac cong tac khac N o cung cho phep dua nhirng quyet d i n h nhanh c h o n g va c h i n h xac cua phat trien m o v a ke hoach t h a m N g o a i ra, co the b i e u d i e n cac c h i s i va b i l u trinh dien can thiet bang each i n cac so lieu T r o n g cac s i l i e u phan t i c h he t h o n g p h u , p h u a n g phap t h i n g ke c l d i l n n h u dia thong ke d u g c ap d u n g de xac d i n h dieu k i e n t u n h i e n cua than quang v a cac hoat dong khai thac m o H o n nua, dia t h o n g ke cho phep n o i suy xac d i n h t h o n g t i n cho du s i lieu la p h i i h g p hay k h o n g Phan phan t i c h so lieu cho phep cung c i p m o t c h i s i m o ta t i n h lien tuc ciia than quang Phan m o h i n h xay d u n g n o i suy cho phep the h i e n k l hoach k h a i thac va cac mat cat ngang t u o n g i m g theo dang b i e u B e thuc h i e n cong viec nay, p h u a n g phap dia t h i n g ke t h u o n g d u o c sir d u n g la p h u a n g phap K r i g i n g P h u a n g phap cho phep cung c i p mot thuoc dang t i n cay cho viec danh gia than quang K i t qua d u g c t h i hien d u o i dang cac ban m o h i n h Trir l u g n g dia chat v a t r u l u g n g khai thac co t h i t i n h toan d u g c theo he t h i n g p h u tren Cac loai t r u l u g n g tren co the dugc t i n h cho b i t k y mire khai thac c h i t i l t nao, bang each g i o i han pham v i khai thac t i n h toan, sau ket qua t i n h toan se d u g c t h i h i e n theo dang bang bieu Trong cac bang bieu nay, chat l u o n g trung b i n h cho cac loai h a m l u g n g bien khac se dugc the hien ro rang K h i thiet ke m o , cac so k h a i thac m o khac co t h i d u g c t h i l t lap va danh gia bang cac m o h i n h k h o i ( h i n h 5) D i e u la rat quan t r g n g d o i v o i n h u n g khoang sang co dieu kien t u nhien va phan bo c h i t l u g n g phuc tap N h i r n g thay d o i v l c h i t l u g n g than quang, t h o n g qua cac p h u o n g an khai thac m o khac nhau, cac m o h i n h k h l i se g i u p ta nhanh chong t i m dugc p h u o n g an khai thac m o t o i u u Hinh 5: Md hinh khdi vd thuc te 187 Hpi Cong nghi nghiep khoa hoc mo tien kT thudt tien mo quSc vi su phat triin te - 2010 bin vung D o hoa la cong c u quan t r o n g t r o n g qua t r i n h t h a m v a k h a i thac m o D i e n h i n h cua hoa la viec x a y d u n g cac ban phan bo t r u l u o n g va phan bo c h i tiet chat l u o n g than quang M o t t h o n g t i n quan t r o n g duoc d i i n g de danh gia cac gia t r i ciia v i k h o i la binh the hien gia t r i cac v i k h o i M o t dang hoa d i e n h i n h khac cho phep b i e u d i e n co sd dir lieu cac l d k h o a n t h a m dd la mat cat dia chat ciia chiing He t h d n g da neu d tren k h o n g x e m xet den he sd n h u t h d i gian, kha nang ciia thiet bi va san l u o n g y e u cau, k h o n g cd chu k y duoc sap dat t r u d c v a k h o n g cd su ap dat cac hoat dong k h i x e m xet C h i cd cac dac d i e m ve h i n h hoc m d n h u b i e n g i d i m d v a gdc ddc b d mo duoc sir dung t r o n g g i a i doan V d i p h u o n g phap lap t r i n h t u y e n t i n h , g i d i han ciia m d d u p e xac d i n h theo l y thuyet tai m o t t h d i d i e m c u the va la d d i t u p n g ciia viec dau t u trang thiet b i , y e u cau ciia nha may va dieu k i e n t h i t r u d n g N g o a i ra, cac muc t i e u khac n h u t d i u u hda m d v a nha m a y co the thuc hien theo each M o t each t d n g quat, k h i t d i u u hda viec k h a i thac da v d i c u n g cap cho cac nha may san xuat x i m a n g , cd n h u n g n h i e u v a n de sau can giai quyet: - T y le p h d i l i e u n g u y e n l i e u thd phai p h i i hop v d i n h i r n g y e u cau khat khe ve phan hda n h u : cac gia t r i m u c t i e u va gia t r i t d i da cho phep - T o a n bp he t h d n g bao g d m : k h a i t r u d n g , bai t h a i , n g u y e n l i e u d i e u c h i n h , thiet bi van tai, t r a m dap v a nha m a y san xuat phai dupe t d i u u hda N d la m o t phan gia t r i cho phep t d i u u hda so b d t r i m d ddc lap v d i nha may v a y e u cau ve thiet b i k h i tat ca nhung he sd cd quan he v d i va cd the t d i u u hda ddng t h d i - M d i quan he qua l a i nhat quan g i u a viec lap ke hoach k h a i thac m d dai han, trung han va ngan han nhat thiet phai p h i i h o p v d i muc t i e u dai han ciia m d V i d u m i n h h o a t a i C o n g t y C o p h a n X i m a n g H a T i e n M i n h hoa sau day de cap den viec t d i u u hda m d n g u y e n l i e u c h i n h cho san xuat x i mang tai m d da v d i T h a n h L u o n g ciia C d n g t y C d phan X i m a n g H a T i e n 1, m o t v i e n ciia V i C e m 3.1 Thong 3.1.1 tin tdng quat ve mo dd vdi Thanh Luong Vi tri dia ly: M d da v d i T h a n h L u o n g n a m t r e n d i a p h a n hai x a Thanh L u o n g thudc h u y e n B i n h L o n g va L p c T h a n h thuoc h u y e n L p c N i n h , t i n h B i n h Phudc M d da v d i T h a n h L u o n g n a m each t h i x a B i n h L o n g k h o a n g 20 k m ve p h i a tay nam, each Qudc I d 13 k h o a n g 15 k m ve p h i a tay, each b i e n g i d i C a m p u c h i a k h o a n g k m ve p h i a D d n g N a m D i e m t r u n g t a m ciia m d d u p e xac d i n h theo toa dp d i a l y : 11° 39' 00" v i dp bac v a ° 27 " k i n h dp d d n g 3.1.2 Dia hinh: M d n a m d t r u n g t a m m i e n D d n g N a m B p , t a i t r u n g t a m ciia chien k h u D x u a , t r e n d i a h i n h t u o n g d d i p h i i c tap cd dp cao tir + m den + m bao quanh la dai d d i thap t h o a i cd dp cao + m den + m T r e n be mat dia h i n h thap ciia k h u m d cd i t cay l d n , song phat t r i e n n h i e u cay le, cd gai r a m rap gay n h i e u k h d khan cho cdng tac t h i cdng 3.1.3 Chat lupng dd vdi: Theo ket qua phan t i c h m a u hoa c o ban, h a m l u p n g CaO, M g O va C K T ciia da v d i theo m a u dao d d n g n h u sau: 188 Hdi Cdng nghi khoa nghiep md hoc tien kT thudt tien md qudc vi su phat te - trien 2010 ben vung - CaO: 46,2-55,58%, da phan tren 50% - M g O : , - , % , da phan d u o i 3% - C K T ( H O ) : - , % , da phan d u o i % D a v o i co ty t r o n g t r u n g b i n h 2,74 g / m , dung 2,68 g / m , hut nuoc 0,43%, 3 rong 2,36%>, c u o n g khang nen 433 k G / c m o trang thai kho va 393 k G / c m trang thai bao hoa nuoc, am k h o n g dang ke khoang 0,22 % 3.1.4 Tru luong: 3.2 Sir dung T r u l u o n g dia chat cap 121+122 cua m o la 87,1895 trieu tan md hinh cu cho cdng tdc thiet ke vd khai thdc md V o i ban thiet ke khai thac h i e n dang duoc ap d u n g cho m o t h i t o n g k h o i l u o n g da v o i chat l u o n g thap phai boc tach va chuyen bai thai d u o c the h i e n n h u t r o n g bang Bang 2: Khoi luqng dd vdi vd dd thai cua md dd vdi Thanh K h o i l u o n g da v o i (trieu tan) 87,1895 Nam 50 3.3 Sir dung Luffng md hinh khdi va ke hoach D a thai (trieu tan) 11,047 md Sir dung m o h i n h k h o i va lap ke hoach khai thac cho m o da v o i T h a n h L u o n g , chung toi thu duoc ket qua n h u sau (bang 3) Bang 3: Ket qua dp dung mo hinh khoi cho md dd vdi Thanh Nam 50 _—_ K h o i l u o n g da v o i (trieu tan) 98,237 T K h o i l u o n g da v o i (trieu tan) 0.0 Luffng G h i chu r Chat l u o n g dap u n g yeu cau l a m n g u y e n l i e u x i mang Chat l u o n g da v o i khai thac va cung cap cho nha may co the k i e m soat bang may tinh H i n h va m o ta ham l u o n g CaO va M g O cua m o da v o i T h a n h L u o n g sau k h i duoc mo hinh k h o i 189 Hoi Cong Hinh nghi khoa nghiep md hoc tien 7: Md hinh kiwi ham luffng ki thudt tien md qudc vi su phat CaO Hinh ti trien -2010 ben vitng 8: Md hinh khoi ham lupng MgO K e t l u a n B a n g viec n g h i e n ciru cac van de cap thiet sinh t r o n g t h u c te tai V i e t Nam, V i C e m da tien hanh n g h i e n c u u va thuc n g h i e m viec ap d u n g m o h i n h quan l y khai thac da v o i tien tien cho cac m o da v o i co quan dang quan l y K e t qua thirc n g h i e m la rat thoa dang va ro rang V i e c ap d u n g cac m o h i n h quan l y khai thac nay, t r u o c t i e n can d u o c thirc hien cho cac m o da m o i hoac cac dir an x i mang m o i , sau se phat t r i e n cho toan bo cac m o lai cua V i C e m v o i muc d i c h : cai thien viec k i e m soat chat l u o n g n g u y e n l i e u tho va nang cao hieu qua khai thac tai cac m o da v o i phuc v u san xuat x i m a n g V i e t N a m Tai lieu tham khdo the B u i X u a n N a m , Carsten Drebenstedt (2006) Investigations of mining systems in Vietnam limestone industry Cement International, N o / 0 V e r l a g Bau+Technik Germany P 88-97 ( I S S N 1610-6199) V u M a n h H u n g , D o M a n h C u o n g (2008) The indispensable advanced cement raw material corporation management model for cement production application in Vietnam International Conference on Advances i n M i n i n g and H a n o i , A u g u s t - , 2008 Publishing House f o r Science and T e c h n o l o g y 190 of the industry Tunneling ... cac hoat dong khai thac m o H o n nua, dia t h o n g ke cho phep n o i suy xac d i n h t h o n g t i n cho du s i lieu la p h i i h g p hay k h o n g Phan phan t i c h so lieu cho phep cung... 121+122 cua m o la 87,1895 trieu tan md hinh cu cho cdng tdc thiet ke vd khai thdc md V o i ban thiet ke khai thac h i e n dang duoc ap d u n g cho m o t h i t o n g k h o i l u o n g da v o i... ciia V i C e m da loai khoang 5+15% ciia tong k h o i l u g n g hoat dong khai thac m o i nam 1.3 Tinh hinh quan ly khai thdc dd vdi D u a vao ket qua khao sat va t h a m k h u vuc n g u y e