Hpi nghi khoa hoc kT thudt mo quoc te 2010 Cong nghiep mo tien tiin vi su phat trien ben viing D I T A N S A T T H A C H K H E T H A C H T H L f C L ( J N V E C O N G N G H E V A M O I T R l T C T N G[.]
Hpi Cong nghi nghiep khoa hoc mo tien kT thudt tiin mo quoc vi su phat te - trien 2010 ben viing DIT A N S A T T H A C H K H E - T H A C H T H L f C L ( J N V E C O N G NGHE V A M O I TRlTCTNG D O I V l N G A N H M O V I E T N A M ThS Luu Van Thuc V i e n K h o a hoc C o n g nghe M - T K V PGS.TS H d Sy Giao H o i K h o a hoc C o n g nghe M o V i e t N a m Tom tat: Bai bdo de cap den nhirng ddc diem dja chat, dia chat cong trinh vd dia chat thuy van dnh huong den viec lira chon cong nghe hop li khai thdc mo sat Thach Khe cung nhu nhung tiem dn ve co moi truong cd the xdy qua trinh khai khdc Bdi bdo ciing trinh bay nhung ket qua thu nghiem ban ddu ve cdng nghe xuc, van tdi, dd thdi, thoat nuoc nham rut kinh nghiem trudc dua md vao sdn xudt, neu cdc dinh hudng can tiep tuc nghien ciiv vd xir nham gdp phan hoan thien cdng nghe khai thdc phu hop vdi dieu kien md sat Thach Khe Dac diem, dieu kien tu nhien khu mo Sat Thach K h e la m o t khoang sang co t r u l u o n g I o n n a m t r o n g dia phan xa: Thach Khe, Thach H a i , Thach D i n h thuoc huyen Thach Ha, t i n h H a TTnh N a m tren cac bai cat, dia hinh k h u m o t u o n g d o i bang phang, cao t r u n g b i n h tir m u c +5 + + m T r o n g p h a m v i k h u m o k h o n g co cac suoi I o n Phia Tay each t r u n g t a m k h u m o k m co song Thach D o n g chay theo h u o n g tir N a m len Bac va Cira Sot, p h i a D o n g each t r u n g t a m k h u m d 1,6km la B i e n D o n g K h u m o nam t r o n g v i i n g k h i hau nhiet d o i v e n bien, m o t nam co miia ro ret: M i i a m u a bat dau tir thang 5+11, m i i a kho tir thang 12 den thang nam sau L u o n g m u a hang nam thay d o i tir 1285,1^-3701,4 m m K h u m o co cau tao dia chat phirc tap v o i cau true c h i n h la tang n h a m thach co ben khac v a nhieu nuoc ngam: - Tang De tir va Neogen co chieu day tir 26+ 227m, gom: Cat, set va set pha tron co nguon goc song, bien D o k i e n cd theo thang Protodiaconov f = - Tang da cd dd cung trung binh, ldp vd bi phong hoa day tir 50-e-130m, la sudn tich tan tich luon sau, t r a m t i c h , set pha cat, manh v u n da gdc va quang sat - Tang d u d i cirng la da gdc cirng chac, t h u o n g la granit, da carbonat n h u da v d i , da sung, da cam thach, cd h i e n t u o n g karst D o k i e n cd f = 4+\1 N h a m thach cd phan, ben cung n h u chieu day k h o n g d d n g deu Cac l d p da tre va yeu phan bd n h i e u h o n d phia Bac va D o n g D a gdc n h i e u chd b i chia cat b d i pha huy kien tao D i e u k i e n dia chat thuy v a n ciia m d sat Thach K h e rat phuc tap gay k h d khan cho qua trinh hoat ddng k l i a i thac: K h i day m d x u d n g t d i sau - m t h i bien g i d i k h a i trudng phia D d n g Bac each mep nude bien 0 m ; Song T h a c h D d n g chay qua phia T a y mo; Cac v i i n g da v o v u n r d n g l d n cd he so t h a m nude cao, v a i tang chua nude va to h o p chua nude cd l i e n ket thuy lire v d i nhau; Cac hang dong kasto t r o n g da c a m thach co kha nang tao n h u n g b d n nude cd m i lien he g i u a nude n g a m v a n u d e b i e n v v N h u n g dac d i e m ve t u nhien n d i tren k h o n g chi la n h u n g y e u t d gay anh h u d n g den cdng nghe, 237 Hdi Cong nghi nghiep khoa hoc md tien ki thudt tien md qudc vi sir phat triin ti - 2010 bin vung van hanh thiet bi may moc cua hoat dong khai thac mo ma tiem dn nhilu rui ro, sir co v i m o i t r u a n g va b a m o L j c h sir t h a m d o , t h i e t k e m o : M o s i t T h a c h K h e dugc n g u a i Phap (Deprat, C o l a n i ) phat h i e n tir t r u a c n a m 1954 Cong tac t h a m t i m k i l m b i t dau tir 1963 t a i 1966 V i e c t h a m sa bo ket thuc vao nam 1978, nam 1985 D o a n 402 thuoc L i e n doan dia chat da lap x o n g bao cao t h a m t y m i N a m 2007, C o n g t y V I T E da lap bao cao chuyen d o i trir l u g n g N h i n c h u n g cong tac tham cua m o dam bao d i i c a sd va t i n cay de lap thiet ke k h a i thac T i n g t r u l u g n g v a tai nguyen ciia m d la: 534,45 t r i e u tan, t r o n g dd cap trir l u g n g la 273,96 trieu t i n , tai n g u y e n la 260,49 t r i e u t i n Quang s i t d day thuoc l o a i d e l u v i , quang g l e va cac than quang pha tap khac T h a n quang goc chay theo h u d n g B a c - N a m , dai khoang k m , rong 0 ^ 0 m , c h i l u day than quang tir 22 + 0 m , c h i e u sau phan bo tir mire -42 -750 H a m l u g n g t r u n g b i n h cac nguyen t d n h u sau: Fe = , % ; M n = , % ; Z n = 0,07%; S = 0,112%; P = 0,05% D i n da cd n h i e u td chuc t u van lap dir an k h a i thac: N a m 1984-1985, td chuc t u v i n ciia L i e n X d (cu) da lap L u a n c h i i n g k i n h te-ky thuat; g i a i doan tir 1991-1997 C d n g ty K r u p p - L o h r h o P a c i f i c (CHLB Due) da lap Bao cao t i e n k h a t h i , k h a i thac den sau -400m, cdng s u i t m d 10 t r i e u tan/nam, trir l u g n g quang k l i a i thac 304 t r i e u tan; nam 1991 Cong t y N i p o n Steel c i i n g v d i C o n g ty M i t s u i , C o n g t y N i c h i m e n v a c d n g t y Nissho I w a i (Nhat Ban) da lap Bao cao t i l n kha t h i v d i cdng suat m d 5,0 t r i e u tan/nam; nam 1994 Cong ty D r O t t o G o l d da lap " B a o cao danh gia d j a chat va chat l u g n g m d quang sat T h a c h K h e " va Cong t y Rheinbraun Engineeri (CHLB 1995-1997 C o n s o r t i u m g l m K r u p p (CHLB (Nhat Due) da lap " B a o cao thao k h d m d " ; giai doan Dire), Genrco (CH Nam Phi) v a M i t s u b i s h i Bdn) da p h d i h g p lap Bao cao kha t h i chi tiet m d sat T h a c h K h e v d i cdng suat 10 trieu tan/nam N h u n g v i nhieu nguyen nhan khac cac dir an cac t d chirc tren deu khong the t r i e n k h a i dugc N a m 2004, V i e n G i p r o r u d a ( C H L B N g a ) da lap bao cao t i e n k h a t h i , sau dd nam 2007 da p h o i h o p v d i cac t d chuc t u v a n V i e t N a m lap D i r an dau t u x a y d u n g va da dugc cac co quan chirc nang phe duyet C o n g nghe k h a i thac - t h o a t n u o c theo d u an V i e n G i p r o r u p d a lap n a m 2007 M o sat T h a c h K h e co trir l u g n g l d n , co the dap irng n h u cau n g u y e n l i e u phuc v u cho cong nghiep gang thep ciia dat nude nhieu nam K h a i thac sat T h a c h K h e la m o t dir an co y nghTa chien l u g e rat l d n k h o n g c h i ve k i n h te- x a h d i m a c o n ve m a t c h i n h t r i , dac biet giai doan V i e t N a m m d i budc vao t h d i k y h d i nhap v a dang b u d c dau ciia giai doan cong nghiep hoa va hien dai hoa D a t nude V i e c k h a i thac quang sat m d T h a c h khe trudc het nham cung cap nguyen l i e u cho N h a may thep l i e n h o p d u o c xay d u n g tai k h u Cong nghiep V u n g A n g - H a TTnh, m o t phan cung cap n g u y e n l i e u cho C d n g t y gang thep Thai N g u y e n N g o a i ra, m o t phan quang ciia M d dir k i e n se duoc xuat k h a u n h a m d d i than m d hoac than cdc d i i n g cho l u y e n k i m t r o n g nude Theo dir an d i u t u V i e n G i p r o r u p d a lap nam 2007, san l u g n g g i a i doan I la 4,5 trieu t i n quang nguyen k h a i / n a m , giai doan I I la 10 trieu tan quang n g u y e n k h a i / n a m , k h l i 238 Hpi Cong nghi nghiep khoa hoc md tien ki thudt tiin mo quoc vi su phat te - trien 2010 ben viing l u o n g dat boc I o n nhat 20 trieu m / n a m , bien g i o i ket thuc m o mure - 5 m , trir l u o n g quang khai thac 375 t r i e u tan, k h d i l u o n g ddt boc 661,7 t r i e u m (dat y e u 353,5 t r i e u m , da c u n g 308,2 trieu m ) T u y n h i e n , dk k h a i thac m o Thach K h e k h o k h a n I o n nhat la thao kho va thoat nuoc m o Theo t i n h toan ciia cac chuyen gia dia chat t h u y v a n l u u l u o n g nuoc chay vao khai t r u o n g t o i 3.171.804 m / n g a y d e m (bao g o m 1.759.555 m n u o c mat va 1.412.249 3 m nuoc ngam), day se la m d co l u u l u o n g nuoc chay vao l d n nhat d V i e t N a m G i a i phap thao kho va thoat nude m d d u k i e n ap dung la he t h d n g cac gieng k h o a n de thap mire nude ket hop v d i thoat nude c u d n g birc bang cac t r a m b o m dat d day m d va tren b d m o Cac gieng khoan duoc b d t r i tirng v o n g khep k i n , bat dau bao quanh k h u v u c m d v i a , sau dd m d rdng dan theo su phat trien ciia cdng t r i n h m d cho t d i b i e n g i d i c u d i ciing, chia dot: L a n l u o t la 44; 52; 69 va 195 gieng khoan Theo thiet ke cac Id k h o a n se duoc ton tai va hoat d d n g den het d d i m d , n h u n g t r o n g d i e u k i e n quang va tang da c u n g phai khoan nd m i n , t h i c h i cho phep t r i duoc cac 16 k h o a n d hang ngoai cung D o vay, d giai doan cudi thao k h d day m o se gap nhieu kho khan, nen phai nghien c u u cac giai phap bo sung khac D o n g bo thiet b i k h a i thac g o m : M a y khoan loai xoay cau CBUJ-250MH ( d u o n g k i n h d = m m ) , sir dung may xuc 3KI~-10 (E = 10 m ) t r o n g l u o n g 395 tan de xuc dat da c u n g va quang, sir dung m a y xuc gau treo ES-6,5/45 (dung t i c h gau E = 5+7 m ) de xuc dat da mem, thiet b i van tai dat da va quang la to Beflar-71135 tai t r o n g 130 tan De dam bao cho cac thiet b i tren hoat dong d u o n g van tai d o i v d i cac tang dat yeu (tren nen cat, set, set pha c a t ) phai gia cd bang rai l d p da dam cd chieu day 1,0m V d i dieu k i e n dia chat thuy van, dia chat cdng t r i n h phuc tap va quy m d san l u o n g nhu mo Thach K h e , d o n g bo thiet b i D i r an lira chon chua h o p l y b o i : T h i e t b i khoan va xiic sir dung nang l u o n g dien, co t r o n g l u o n g l d n , cdng k e n h k e m co ddng, toe d i chuyen cham, de gay lay l u n k h i hoat d o n g tang dat yeu M a t khac, d i e u k i e n t h o i tiet viing Thach K h e hang nam t h u o n g xay m u a bao vao t h o i g i a n tir thang den thang 12, gay ngap lut m o v a x a y mat dien, v d i cac thiet b i chay dien se k h o n g an toan k h i hoat dong cac tang d u d i day m d H o n nira, thiet b i k h o a n quang sir d u n g d u d n g k i n h d = m m la l d n so v d i k i c h c o yeu cau k h i dua quang vao nghien tuyen T h i e t b i van chuyen co tai qua l d n so v d i yeu cau cdng suat m d va k h o n g p h u h o p v d i dieu k i e n dia chat phiic tap ciia m d dac biet la tang dat yeu D u d n g v a n tai t r o n g k h a i t r u d n g d i chuyen l i e n tuc theo trinh tir phat t r i e n cdng t r i n h m o phai rai l d p da day 1,0m, sau d d xiic chuyen l a m tang chi p h i va td chiic san xuat phirc tap N h u n g k h o k h a n can l u o n g t r u d c K h a i thac m o sat Thach K h e co the se gap phai n h u n g k h o khan n h u m u a l d n keo dai nhieu ngay, t r a m b o m d day m d va cac gieng k h o a n hut nude k h o n g hoat dong duoc hoac hoat dong k h o n g co hieu qua l a m ngap lut day m o Sir co mat dien l u d i cung co the xay tinh trang t u o n g t u Sir ngap lut day m o se dan den nhirng tac hai pha huy toan bo trang thiet b i , may moc va cong t r i n h k h a i thac m a viec phuc h i l a i rdt k h o khan va t o n k e m Sir xuat h i f n cua cac m o i l i e n ket thuy lire g i u a cac tang nude n g a m v d i cac b o n chiia, cac v i i n g dat da t o i v u n n g a m nude, cac hang dong kasto v v l a m t i e m an cac n g u y co buc nude, cd the gay ngap lut cue bd hoac toan dien dan den cac thiet hai ve k i n h te 239 Hpi Cong nghi khoa nghiep hoc mo tien ki thudt tien mo qudc vi su phat ti - triin 2010 bin vung Sir cong huong cua yeu to la nuoc ngam, nuoc bien va lop dk da phii de tir ylu day 26+227 m phia tren se tao co h o i t r u o t no, t r o i rua ddt da b d m d , t h a n i thau m a c h nude ngam, nude bien, dan den sat l d cue bo, t h a m c h i sat l d ca doan b o m d , dac biet b o m d phia D o n g k h a i t r u d n g Cac ket qua t i n h toan d n d i n h b o m d , n i u k h o n g cd cac b i e n phap phong c h l n g , b d m d T h a c h K h e se t i e m an n g u y co bien dang N g o a i ra, h i e n t u o n g nude bien dang cao bao cung can duoc nghien c u u de cd giai phap p h o n g tranh M o t v a n de m d i t r u d n g quan t r o n g khac cung can duoc de cap t d i k h i dir an dua vao hoat dong T r o n g khoang sang sat Thach K h e t o n tai tang n u d e n g a m cd m d i l i e n he thuy lire v d i nude mat t h d n g qua l d p p h i i neogen va de t u t o i x o p cd he sd t h a m cao D o vay, qua t r i n h b o m thoat nude n g a m ciia m d se anh h u d n g t d i n g u d n tai n g u y e n nude mat N h u n g k e t q u a t h u n g h i e m b a n d a u T r o n g dieu k i e n dia chat phuc tap va n h u n g sir cd m d i t r u o n g cd the x a y qua t r i n h khai thac n h u da n d i tren day D o vay, can phai t h i c d n g thir n g h i e m cong nghe xiic, van tai, thai, thoat nude v.v n h a m due rut k i n h n g h i e m t r u d c k h i dua m d vao khai thac v d i quy m d l d n D u o c sir ddng y ciia C h i n h p h i i va B d C d n g t h u o n g V i e t N a m , 01/12/2007 C d n g t y C d phan sat Thach K h e c i i n g v d i C d n g t y C d phan than Coc s a u - T K V da t h i cdng thir n g h i e m tren nen cat va set tai k h u vuc phia Bac k h a i t r u d n g Theo phuong an thir n g h i e m , giai doan I bdc 1,5 t r i e u m cat va set, g i d i han thir n g h i e m den m u c -10 Thiet b i t h i cdng thir n g h i e m g d m : M a y xiic t h u y lire gau n g u o c cd d u n g t i c h gau tir 1,8+2,8m , t d cd tai t r o n g tir 15+37 tan, thiet b i p h u t r o la m a y gat D A , may xiic tai va may san d u d n g , thiet b i b o m nude cd cdng suat tir + m / h v a m a y b o m 1250 m / h 3 N a m 2009, sau k h i thir n g h i e m cdng giai doan I , C d n g t y C d phan sat Thach K h e da lap ke hoach bdc dat tang p h i i v d i k h d i l u o n g 11,5 t r i e u m a Thoat nude khai trudng De han che nude mat x u n g quanh chay vao khai t r u d n g , m d da x a y d u n g he t h d n g de bao x u n g quanh bang vat l i e u cat tai cho D o vat lieu la cat, nen theo t h o i gian d u d i tac d d n g ciia mua, g i d k i c h t h u d c ciia de b i bao m d n v a phai gia co D o i v d i nude n g a m l u u l u o n g chay vao khai t r u d n g tang nhanh t r o n g cac thang m i i a mua K h i k i c h t h u d c k h a i t r u d n g d i n m i i c -10m tren dien t i c h , 5 k m ( 0 m x 5 m ) , l u o n g nude chay vao m / t h a n g (3/2009) md len t d i Hinh Nao vet ho bam tai md Thach Khe 610.800 b Cong tdc dao ho bom: M d da sir d u n g m a y x i i c t h u y lire gdu nguoc de dao hd b o m , chieu sau h d b o m tang cat chi dat m D o l u o n g n u d e n g a m chay vao l i e n tuc keo theo l u o n g b i i n cat chay xuong hd b o m , c h i l u sau h i b o m k h o n g dat y e u cau n h u thiet ke ( m ) K h d i l u o n g b i i n cat nao vet tir 4083+35.940 m / t h a n g K h u vuc dao h i b o m l u o n lay l d i , m a y x i i c phai xiic chuyen tai tir 2+3 ldn 240 Hpi Cdng Bdng 1: Luang Chi tieu Lugng mua thang ( X ) , m Dien tich nuac (F),10 m Lugng nuac mua chay vao moong khai thac:10 m /thang Lugng nuac ngam chay vao moong khai thac Qn, 10 m /thang Tong lugng nuoc chay vao moong khai thac, 10 m /thang nghi nghiep khoa hoc md tien ki thudt tiin md qudc vi su- phat mua va nu&c ngam chay vao khai truong trien ben 2010 viing bdc ddt thu nghiem giai doan I T h a n g ( N a m 2009) T h a n g (Nam 2008) 10 11 0,6 ti 0,14 12 l 0,18 0,69 0,04 1,34 0,67 0,04 0,03 0,15 0,39 73,1 104,0 108,3 109,4 130,5 218,3 247,8 272,7 287,9 310,2 349,5 3,2 3,0 16,7 42,2 1,04 0,03 0,51 350,5 355,5 351,5 78,4 43,4 10,7 415,3 233,5 363,8 125,5 254,2 195,5 167,5 147,5 117,5 224,6 219,2 233,8 312,0 357,5 403,7 357,6 308,9 312,5 264,9 610,8 400,9 511,3 128,5 403,5 30,3 187,1 11,0 178,9 3 216,0 230,8 295,3 315,2 325,3 327,3 265,5 3 c Anh hu&ng cua nu&c ngam t&i sw&n tdng cdt D o dac d i e m cua tang cat b a r a i , l i e n ket yeu, k h i m a i x i i c x o n g goc doc suon tang co gia t r i tir a = 4 + ° , sau g i a m dan va sau thang a = + ° gan bang 30 25 gia t r i goc d i e t h i l t k i ( a = + ° ) K h i chieu cao tang tang hoac k h i co m u a bo cap cho nuac n g a m t h i goc doc s u o n tang g i a m nhanh, sir thay d o i goc doc s u o n tang theo thai gian t h ! hien tren h i n h 28 28 28 T.I m n h T.2 T.3 T.4 T.5 T.6 T.7 T.8 T9 Th«n« 2: Su thay ddi gdc ddc suon tdng cdt theo thoi gian tqi vi tri quan trac so De g i a m su x o i l o s u o n tang cat k h o n g de nuoc n g a m chay dgc theo ranh d u o i chan tang ma tao cac ho t h u t r u n g gian, sau dua nuoc ve cac ho tap t r u n g tren mat V a i phuang phap se g i a m su x o i l a chan tang va va suon tdng d Cdc thdng so he thong khai thdc Cac t h o n g so he t h o n g k h a i thac t r o n g qua t r i n h t h i cong thir n g h i e m ciia m o T h a c h Khe dugc xac d i n h n h u bang Qua theo d o i cho thay v o i dong bo t h i l t b i la m a y xiic t h u y l u c gau n g u g c co dung tich gau E = l , + , m , p h i i h g p v o i oto co tai trgng q = 15+39 tan cac t h o n g s i he t h i n g khai thac n h u bang la p h i i h o p 241 Hpi nghi Cong nghiep khoa hoc kT thudt mo quSc te 2010 md tien tiin vi su phat triin bin vung Bang Cdc thdng so HTKT thi cdng thu nghiem tqi md quang sat Thach Khe (Tinh din thdng 6/2010) Gia tri Chieu cao tang boc dat da (H) m Chieu cao phan tang xiic (h ) Chieu rong mat tang cong tac toi thieu (B ) m pt Theo dir an dau tu 12 Don v i Cac thong so TT m Thiet ke thir nghiem 40 Thirc te thir nghiem 12 8+12 + + 35 25-35 m i n Goc doc suon tang cat (a) do Goc doc bd cong tac (cp) Chieu rong dai khau ( A ) 25 + 30 18 27 + 29 28-33 14+15 - m + 12 10+12 Chieu dai khu vuc xiic ( L ) m 200-250 Chieu rong khai truong trung binh m 200+250 120 10 11 Chieu dai khai trudng m 980 x Cot cao day ho bom \ \ Chieu rong mat tang bao ve ldp cat Khoang each an toan (Z) 12 13 Khoi luong da xuc boc e So cdng nghe m m 10 m J xuc vd nang - 15 300 + 355 1000 -1100 -20 1,5+3,0 7.500 j suat cua thiet bi H i e n tai, m o dang ap dung so cdng nghe xiic n h u sau: - Trudng hop day mo lay loi: M a y xiic thuy lire gau ngugc dung tren v d i guong xiic phia dudi va chat tai vao dtd dung ciing miic Chieu cao phan t i n g xiic tir h - Trudng + Trudng hop day md thoat nude p t = 2,5+3,5m (hinh 2) tot: A p dung cac sa dd x i i c n h u sau: hop 1: M a y xiic thuy lire gau n g u g c d u n g tren v d i g u o n g xiic p h i a d u d i va chat tai vao oto d u d i m i i c may d u n g , chieu cao phan tang , + , m ( h i n h 3) + Trudng hop 2: M a y xiic thuy lire gau n g u g c d u n g d m i i c t r u n g gian xiic ca guong phia tren va g u o n g p h i a d u d i , chat tai len d to dirng d u d i m i i c m a y d u n g C h i e u cao phan tang d u d i h p t d = - , m , chieu cao phan tang tren: h p t t = 3+3,5m (hinh 4) K h i day m d thoat nude tot nang suat ciia may xiic tang tir 8,95+17,57% so v d i day mo lay l d i A p d u n g so xiic n h u h i n h 4, t d chiic san xuat thuan l g i , k h d i l u g n g dat da rai d u d n g va d i c h u y e n d u d n g it nhat D o dd, viec thao k h d day m d cd y nghTa quan trgng de hoan ke hoach san xuat ciia m d T u y nhien, k h i day m d lay l d i ap dung so cong nghe xiic n h u h i n h van dam bao t i n h kha t h i ve cong nghe va nang suat ciia dong bo thiet b i V d i cac tang dat yeu (cat, set va set pha cat v v ) may xiic thuy luc gau ngugc khai thac p h i i hgp h o n so v d i cac loai may xiic gau cap chay dien / Cdng tdc van tdi-dd thdi T h a i gian thir n g h i e m vira qua cho thay k h i oto nhan tai d d u d i m i i c may xiic dung nang suat ciia td hop xiic bdc - van tai cao h o n so v d i k h i to d i i n g ciing m i i c may xiic Cac loai to co c h i l u r o n g ldp va d u d n g k i n h banh xe l d n co ap lire len nen nhd hoat dong 242 Hoi Cong nghi khoa nghiep hoc md tien ki thudt tiin md quoc vi su phat te - trien ben 2010 vung hieu qua h o n so v o i l o a i to co co l i p nho T r o n g so cac xe dua vao t h i i n g h i e m t h i l o a i to k h u n g dong H M 0 - R co ban k i n h v o n g nho, chieu r o n g l o p xe I o n ( d = 0,7m) ap luc nen nen nho, hoat dong h i e u qua nhat, dac biet k h i day m o lay l o i va sung nuoc Hinh 3: Khi day mo thoat nu&c tot may xuc thuy luc gau nguqc dung tren chit tdi len d to dudi muc may dirng Hinh 2: Khi day md lay loi may xuc thuy luc gau nguqc chat tdi len o to cung miic may dung Hinh 4: Khi day md thoat nude tot may xuc thuy luc gau ngugc dirng mire trung gian chat tdi len oto dudi mire may dirng Cac tuyen d u o n g ngoai m o qua t r i n h thir n g h i e m da d u o c gia co bang dat cap phoi v o i chieu day tir 0,2+0,3m V o i viec gia co n h u tren tuyen d u o n g van tai da dam bao cho cac xe thir n g h i e m van hanh tot, nhien k h i co m u a d u o n g lay l o i sut l u n can phai tu bo sung k h o i l u o n g dat cap p h o i M o dang thai theo phan tang h i n h re quat, dac t h i i ciia cat va set co goc n o i ma sat nho, nen tang thai c h i cao 12m, goc doc suon tang thai k h i m o i dat tir + ° , sau se giam dan ve goc o n d i n h t u nhien co gia t r i < ° T r o n g c i i n g dieu k i e n v d i tang thai cat va set d td k h u n g ddng cd the tien sat mep tang thai de d o t a i ; n h u n g d td k h u n g cirng khong the tien sat mep tang thai de do, k h d i l u o n g phai san gat tir + % , chi phia gat bai thai l d n hon so v d i cac m d dat da thai nd m i n T u y e n d u d n g van tai tren bai thai phai gia cd bang dat cap p h o i N h u n g d i n h h u d n g cho t h o t h o i g i a n t d i Tir dac d i e m dieu k i e n tir nhien, dia chat cua m d va n h u n g ket qua t h i cdng thir nghiem t h d i gian qua, de k h a i thac m d sat Thach K h e an toan, dat h i e u qua k i n h te va bao ve m d i t r u d n g cung n h u p h o n g tranh nhirng sir cd t i e m an n d i tren cd xay ra, t h o i gian t d i can thiet ap dung n h u n g giai phap sau day: a De phong mat dien l u d i (do sir cd k y thuat, m u a bao ) bang each trang b i td may phat chay diezen cd cdng suat t d i thieu bang tong cdng suat ciia tat ca cac gieng khoan thap muc nude va cac t r a m b o m thoat nude d day m o (khoang 0 + n g k V A ) b Sir dung he thdng k h a i thac cd day m d cap ket hop v d i dao sau tang m d i bang may xuc thuy lire gau n g u o c de k h o n g phai dua t h i l t b i (may xuc, dtd) x u d n g l a m viec d day m d luon lay l d i D a y m d thap phai duoc trang b i he t h d n g pha b o m cd cdng suat thoat nude k h o n g nhd h o n 0 m / g i d (chua k i cac t r a m b o m t r u n g gian tren b o m d ) c D o n g bd thiet b i : Cac tang phia d u d i va k h u v u c day m d sir dung cac t h i i t b i chay diezen cong suat p h i i hop, co dong, cd tdc d i c h u y l n nhanh d l de thoat nan k h i gap sir 243 Hpi Cong nghi nghiep khoa hoc md tien kT thudt tien mo qudc vi su phat te - trien ben 2010 vung co m u a bao, sat l a tang K h o n g sir dung cac thiet b i k h a i thac chay d i e n a day m d + Thiet b i khoan: ap dung p h u o n g phap k h o a n xoay cau hoac dap x o a y p h u h o p v a i dieu k i e n D C T V phuc tap K h o a n dat da d u o n g k i n h d = 2 + m m , k h o a n quang d u o n g kinh d = 165mm + X u c boc v a v a n chuyen dat da d cac tang dat y e u p h i a tren, c h i nen d i i n g cac loai may xiic cd d u n g t i c h gau + , m K h i k h a i thac x u d n g sau: X i i c dat da n d m i n d cac tang tren cao co the ap d u n g loai may xiic chay dien n h a m g i a m c h i p h i san xuat + T h i e t b i v a n tai d t d cd tai k h o n g qua 37+58 tan, u u t i e n loai xe cd chieu rong ldp xe l d n de g i a m ap l y c len nen d u d n g , tang dat y e u sir d u n g d t d k h u n g ddng V d i san l u o n g m d A = 5+10 trieu tan quang/nam, dat bdc tir 13,5+20 t r i e u m / n a m , q ddng bd thiet b i cd cdng suat n d i tren la hoan toan p h i i h o p d Cac tang dat y e u ap dung sa xiic may xuc d u n g d m u c t r u n g gian xuc ca tren va d u d i , chat tai len t d d u d i mure may d u n g , n h a m g i a m k h d i l u o n g da rai d u d n g va khoi l u o n g phai d i chuyen e Can dat cac d i e m quan trac t h u y l o i d k h u v y c p h i a T a y k h a i t r u d n g , xac dinh chinh xac bien g i d i v u n g can kiet nude anh h u d n g cua thao k h d m d de cd bien phap hoan tra nude cho cac canh ddng lua va hoa mau f Phai t i e n hanh x i r l y nude thai tir m d trudc k h i hoa m a n g t h u y v a n k h u v y c (ke ca thai true tiep bien) D d i t u o n g xir l y chii yeu can l o l u n g , o x y t sat v a axit h Can khao sat b d sung, danh gia cac hang kasto ciia tang da hda va da sung d khu D o n g Bac m d sat gan v d i bien, nham d y bao v u n g phan bd v a q u y m d cua cac hang hoc Tren co sd dd de cac giai phap phong chdng nguy co buc n u d e k h i k h a i thac x u d n g sau i X a y dung he thdng ld khoan quan trac ddng thai nude ngam chay vao m d , nham danh gia chinh xac luu luong nude ngam chay vao md D y a vao cac sd lieu quan tnic thuy van se xay dyng phuong an thao khd day m d hop ly, clam bao khai thac an toan va hieu qua m d sat Thach Khe 77dm lai: K h o a n g sang sat Thach K h e la m o t n g u d n t a i n g u y e n d d i dao, cd the dap irng n h u cau n g u y e n l i e u phuc v u cho cdng nghiep gang thep ciia dat nude t r o n g nhieu nam T u y nhien, day la m o t k h u v y c cd dieu k i e n t y n h i e n p h i i c tap, t h d i tiet k h i hau x i u , khoang sang nam sat bien, quang phan bd sau d u d i m y c n u d e b i e n , cd l d p d i t p h i i mem yeu, nhieu nude n g a m , vay t i e m an nhieu sy cd r u i ro k h i t i e n hanh k h a i thac chiing V i e c nghien c u u , danh gia c h i tiet cac van de tren n h a m t i m n h i r n g giai phap hiru hieu de ngan chan, han che va khac phuc t d i da n h u n g sy cd t i e m an n d i tren la n d i dung quan trong, l i e n quan den trach n h i e m ciia cac nha khoa hoc, quan l y v a n h u n g n g u d i true tiep quan l y va v a n hanh d y an Tdi lieu tham khdo D y an dau t u k h a i thac v a t u y e n quang sat m d T h a c h K h e - H a T i n h V i e n Giproruda, 2007 L u u V a n T h y c va n n k , Bao cao t d n g ket " T h e o d d i , danh gia p h u o n g an thir nghiem cdng nghe t h i cdng tren nen cat v a set m d quang sat T h a c h K h e - H a T i n h giai doan 1" V i e n K h o a hoc C d n g nghe M d - T K V , 2009 H d Sy Giao " M o t sd y k i e n ve D y an dau t u k h a i thac m d quang sat T h a c h K h e V i e n Giproruda xay d y n g T h d n g t i n K h o a hoc C d n g nghe m d , sd + / 0 244 ... tac t h a m t i m k i l m b i t dau tir 1963 t a i 1966 V i e c t h a m sa bo ket thuc vao nam 1978, nam 1985 D o a n 402 thuoc L i e n doan dia chat da lap x o n g bao cao t h a m t y m i N... i , k h a i thac den sau -400m, cdng s u i t m d 10 t r i e u tan /nam, trir l u g n g quang k l i a i thac 304 t r i e u tan; nam 1991 Cong t y N i p o n Steel c i i n g v d i C o n g ty M i t... Nissho I w a i (Nhat Ban) da lap Bao cao t i l n kha t h i v d i cdng suat m d 5,0 t r i e u tan /nam; nam 1994 Cong ty D r O t t o G o l d da lap " B a o cao danh gia d j a chat va chat l u g n