Hpi nghi khoa hoc ki thuat mo qudc ti 2010 Cong nghiep mo tien tien vi su phat triin bin viing M l T C © 0 N G U Y H I E M V E K H I M E T A N 0? C A C M O T H A N H A M L O V U N G Q U A N G N I N H[.]
Hpi Cong nghi nghiep khoa hoc mo tien ki thuat tien mo qudc vi su phat triin ti bin 2010 viing M l T C © N G U Y H I E M V E K H I M E T A N 0? C A C M O T H A N H A M L O VUNG Q U A N G N I N H V A CAC GIAI PHAP P H O N G NGlTA TS Tran Tu Ba T S P h u n g Quoc H u y V i e n K h o a hoc C o n g nghe m o - T K V Dat van de Trong v o n g 10 nam gan day, nganh than Viet N a m da chung k i e n nhung v u tai nan Ion nhat lich sir chay no k h i Metan D i e n h i n h la v u no k h i metan tai Cong ty than Mao Khe vao 11/01/1999 l a m chet 19 cong nhan C h i nam sau do, vao 19 thang 12 nam 2002, tai M o than Suoi L a i va X i nghiep than 909 da xay v u no k h i lien tiep l a m chet 11 cong nhan Tiep do, vao 06/03/2006, tai Cong t y than T h o n g Nhat da xay v u no k h i metan lam chet 08 cong nhan Gan day nhat phai ke den v u no k h i metan I o n x a y tai C o n g ty than Khe Cham vao 08/12/2008 da cuop d i sinh mang cua 11 can bo va cong nhan T r u a c t i n h h i n h do, Tap doan C o n g nghiep T h a n - K h o a n g san V i e t N a m da chi dao thuc hien n h u n g giai phap k i p t h a i n h a m k i e m soat k h i metan t r o n g cac m o than ham 16 nhu viec bat buoc phai lay m a u phan t i c h , xac d i n h chua k h i M e t a n t r o n g tat ca cac v i a than, cac k h u v u c v i a ; lap dat he t h o n g canh bao k h i t u d o n g cho hau het cac m o than ham 16 viing Quang N i n h ; dao tao va t r i n h dien ve an toan chay no k h i metan t r o n g d u o n g 16 m o phong M a c d i i da duoc dau t u n h i e u trang thiet b i h i e n dai de k i e m soat k h i n h u n g tai mot so m o co chira k h i cao n h u m o than K h e C h a m , Quang H a n h , M a o K h e , v a n de thong gio de k i e m soat k h i t r o len rat k h o khan N a m 2005, he t h o n g canh bao k h i tir dong cua Cong ty than M a o K h e da l i e n tuc b i bao d o n g ham l u o n g k h i o t r o n g l u o n g g i o thai ciia guong 16 m u c -80/-25, v i a D da v u g t qua 1.3% T u o n g t u t r o n g n a m 2009 v a , he thong canh bao k h i tir dong tai C o n g t y than K h e C h a m cung da l i e n tuc b i ngat d i e n ham lugng M e t a n tai g u o n g 16 c h g v i a 13.1.A.3 m u c -120/-150 da v u g t qua g i o i han ( > % ) D o chua k h i metan gia tang theo chieu sau k h a i thac K e t qua d u bao chua k h i cho thay, k h i k h a i thac t o i mire -200 m , chua k h i metan t r o n g v i a ciia C o n g t y than K h e Cham dat t o i 6.5 m / t [1J N h u vay, cang k h a i thac x u o n g sau t h i m u c n g u y h i e m ve no k h i , buc k h i va phut k h i bat n g o cang gia tang K h i x u o n g sau t h i ap lire m o I o n , v i the ap suat k h i M e t a n t r o n g v i a cung tang tuc la k h o i l u g n g k h i hap t h u t r o n g v i a than cung cang Ion theo chieu sau M a t khac, t h a m thau k h i cua than cang g i a m k h i ap lire mo tang [ ] N h u vay, kha nang x a y buc k h i , phut k h i bat n g o la rat cao, dac biet la k h i dao cac d u o n g 16 x u y e n v i a qua than hoac k h i dao cac 16 t h u g n g k h o i d i e m t r o n g v i a V i vay, viec n g h i e n c u u de xuat cac bien phap p h o n g ngira chay no k h i metan khai thac than h a m 16 la m o t viec l a m v o ciing cap bach B a i bao se t r i n h bay chi tiet mot so giai phap n h a m g i a m t h i e u t a i nan gay chay no k h i metan T r o n g so n h u n g giai phap do, thao k h i metan t r o n g m o than h a m 16 la m o t giai phap m o i se gop phan giai quyet dugc van de an toan ve k h i metan t r o n g k h a i thac than h a m 16 N g o a i ra, k h i metan t h u h o i dugc co the dugc sir d u n g n h u m o t n g u o n nang l u g n g kha sach gop phan nang cao h i e u qua k i n h te va giam thieu n h i e m m o i t r u a n g 452 not Cong ngni Ktioa nghiep hoc md tien kT thuat tien md quoc vi su phat te - trien ben 2010 viing Xac d j n h c h i r a k h i m e t a n a cac m o Hien tai, viec danh gia va phan loai m o theo m u c n g u y h i e m vk k h i metan tai Viet Nam duoc thuc hien theo Q u y p h a m k y thuat an toan t r o n g cac h a m 16 than va diep thach TCN 14.06.2006 Cach phan loai m o dua vao thoat k h i t u o n g d o i k h u v u c khai thac va toan mo Phuong phap chua phan anh dung m u c n g u y h i e m ve k h i metan cho tirng via Ngoai ra, viec sir dung ket qua n a m de l a m co so phan loai m o cho nam tiep theo se dan den nhung ket qua k h o n g c h i n h xac b o i v i thoat k h i , chua k h i cua v i a than l u o n thay doi M a t khac, k h i tang san l u o n g t h i thoat k h i t u o n g d o i l a i g i a m d i , dieu la khong hop l y Chinh v i the, xac d i n h chua k h i t u n h i e n se danh gia c h i n h xac d u o c l u o n g k h i co tirng via, tirng k h u v u c via Viec xac d i n h chua k h i metan d u o c tien hanh bang each lay mau than cac 16 khoan vao via K e t qua xac d i n h chua k h i metan se duoc lay lam co so de danh gia m u c n g u y h i e m cua k h i metan, la so l i e u t i n h toan thong gio va la co so de phan loai m o tai m o t so k h u v u c sap dua vao khai thac m a k h o n g xac d i n h duoc thoat k h i metan t u o n g d o i theo quy pham Bang 1: Dp chiia metan cao nhat tqi mot so md than ham id viing Quang Ten mo Ten via V | t r i lay mau, mire Do chira khi, m /T c L o a i mo T h o i diem lay mau K Mao Khe Ninh 9T Doc via than -80 6.28 III 5/2009 9D Lo chg -25/-80 4.69 III 5/2009 7.83 III 11/2009 6.29 III 04/2007 6.09 III 05/2007 3.54 II 01/2007 5.03 III 05/2010 D V Canh Dong khu L Quang Hanh 14 Khe Cham 13-1 Thong Nhat 13.1 (Yen Ngira) Dong Vong 15 Ducmg Huy Cong ty 35 Doc via than, -50 8.37 Sieu hang 06/2007 Congty 91 Lo cha, +300/+356 0.30 I 10/2007 Thang Long 11 Lo cha, +38/+55 0.05 I 10/2008 XN790 Thugng TG, +0/+40 1.05 I 08/2009 Cong ty 45 0.46 I 08/2009 Cong ty 86 10 1.86 I 08/2008 Tan Lap 12 CT 0.38 I 08/2009 -95 Lo TQ-100/-225 Thuong khai thac, -5/+12 Doc via than, +5 Lo ngam khu Nam, +20/+0 Thugng khai thac, + 150/+225 Lo chg gia Z H , +60/+70 Lo chg, -30/+10 453 Hpi Cong nghi nghiep khoa hoc md tien kT thuat tien md quoc vi su phat te - trien ben 2010 vung Ha Rang 14 CT D V than,+100 2.25 I 11/2007 Khe Tam Da Bac Thugng, -70/-10 3.84 II 07/2009 Cam Thanh 14.4 D V than, -20 1.24 I 05/2009 Cao Thang 14 Lo chan, -90 0.40 I 08/2007 Giap Khau khu I I D V than, +30 0.18 I 11/2009 Thanh Cong khu B M Thuong, -60/-40 0.66 I 07/2009 Mong Duong G9 Dong D V than, -32 2.70 II 06/2007 Phan Me Lo chg, -204 0.72 I 07/2007 Ha Lam 10 khu I I D V than,+10 1.92 I 12/2008 Hong Thai 43 D V than,+125 2.06 I 07/2007 Nam Mau 3,T.IIA-F13 D V than,+125 0.12 I 06/2009 Vang Danh 8A khu I C.Ga 0.10 I 11/2008 Hoanh Bo 0.08 I 10/2009 Thugng TG, -50/+115 DV, +300 Tir bang tren cho thay, tai v u n g than Quang N i n h da xuat h i e n cac m o co chira loai I I I v a sieu hang n h u C o n g t y than M a o K h e , Quang H a n h , T h o n g N h a t , D o n g Vong, D u o n g H u y va C o n g t y 35 C o n g tac k i e m soat k h i m o va t h o n g gio m o se t r o len kho khan k h i he thong d u o n g 16 dai h o n va k h i k h a i thac x u o n g sau C h i n h v i the, can x e m xet den kha nang thao k h i M e t a n t r o n g m o gop phan dam bao an toan de phat t r i e n nganh than on dinh, ben v u n g va than t h i e n v o i m o i t r u o n g Cac g i a i p h a p p h o n g n g i r a c h a y no k h i metan 3.1 Gidi phap thdng gid C o n g tac t h o n g gio la cong tac quan t r g n g nhat t r o n g viec ngan ngira n g u y co chay no k h i metan Q u y p h a m k y thuat an toan TfHE ã fnttituUof **iMrtitfctoftcằ*iv(i"(tchôafcôy Ơằtn*n - SvwwUJo tnof umlMrfy ôUtôs File D WOO da quy d i n h ro l u o n g gio can phai cung cap cho m o i tan than k h a i thac m o t dem d o i v o i tirng loai m o Viec t i n h toan dieu tiet gio cho cac k h u v u c t r o n g m o cho dap u n g n h u cau hoa loang h a m l u g n g k h i metan, dong t h o i phai d a m bao y e u to k i n h te la m o t viec l a m k h o khan V o i sir phat trien ciia k h o a hgc k y thuat, Viet N a m h i e n da co m o t so phan m e m thong g i o , b u o c dau da t r g g i u p t i c h cue cho viec t i n h toan thong g i o Ngoai chuc nang tinh toan, cac phan m e m thong gio deu co chuc nang SB-HE F f o n M N I FCWNT iJOW Mdi** r iu-.fl.dr.fill' CO -'JiCTU t CAT tOrtS Hinh 1: Quan ly mang thdng gid md ham Id bang phan mem Ventgraph 454 not Cong nghi nghiep Khoa hoc mo tien ki thuat tien md quoc vi su phat te - trien ben 2010 vung quan ly mang gio Phan mem V E N T G R A P H cua V i e n C a hoc d i t da thuoc V i e n H a n l a m K h o a hoc B a L a n x a y dung chiic nang quan l y m a n g gio khac hoan hao v a i cac gia d i n h chay no m o , phut khi, xay d u n g t u o n g chan, dat cac dau ao, ket noi v o i dau that D a y la m o t cong cu hiru hieu de quan l y m a n g gio r •? 3.2 Sir dung cdc thiet bi phong no phii hop Tat ca cac m o h a m 16 co k h i metan deu phai sir dung cac thiet b i d i e n phong n6 Cac mo co n g u y h i e m ve k h i metan cang cao thi phai sir d u n g cac thiet b i d i e n co m u c an toan p h o n g no cang cao T r o n g so cac vu no k h i M e t a n x a y tai V i e t N a m , nguyen nhan c h i i y e u la tia lira phat tir cac thiet b i d i e n n h u cac v u no k h i tai m o Suoi L a i (2002), T h i n g N h a t (2006) v a tai Khe Cham ( 0 ) 3.3 Sir dung toan phu hop cdc loai thuoc no Hinh Thiet bi thir nghiem tinh phong no ciia thiet hi dien nang an T u o n g t u n h u thiet b i dien, thuoc no sir dung t r o n g m o than h a m 16 cung phai dam bao t i n h nang p h o n g no, nghTa la nguon nhiet phat k h i no m i n k h o n g the k i c h no bau khong k h i co chua k h i metan o g i o i han chay no Co nhieu loai thuoc no an toan ham 16 khac de sir d u n g t r o n g n h u n g v j t r i khac o n h u n g m o h a m 16 co nguy hiem ve k h i metan khac H i e n o Viet N a m m o i c h i sir d u n g m o t loai thuoc no an toan ham 16 C o n g t y V a t l i e u no C o n g nghiep san xuat, thu6c no A H Hinh Buong thu thuoc no an toan mdi trudng nd Thuoc no A H la loai thuoc no co m u c an toan k h o n g cao, t u o n g d u o n g v o i loai 400g cua Nhat B a n (Theo ket qua nghien ciru ciia D u an T r u n g t a m Quan l y k h i m o T h a n Viet N a m ) 3.4 Cong tdc dac va kiem soat mo a Sir dung cdc thiet bi dac metan cam tay dd duoc hieu chudn M a y k h i metan c a m tay d u n g de xac d i n h nhanh h a m l u o n g k h i metan co t r o n g bau khong k h i m o D a y la p h u o n g tien cue k y can thiet de p h o n g ngira n g u y h i e m chay no k h i metan Q u y pham K y thuat an toan da quy d i n h viec k h i phai d u o c t i l n hanh t h u a n g 455 Hdi Cdng nghi khoa nghiep hoc md tien ki thuat tien md qudc vi su phat te - triin bin 2010 vung x u y e n tai cac v i t r i san xuat t r o n g ca T u y nhien, de nang cao h i e u qua t r o n g cong tac khi, m o i n g u o i can bo c o n g nhan duoc giao n h i e m v u k h i phai l u o n neu cao y thuc tir giac, n g h i e m tuc t r o n g cong viec M a y k h i metan c a m tay h i e n d u o c sir d u n g Viet Nam hau het deu hoat d o n g tren nguyen l y giao thoa quang hoc va dot xuc tac Cac may nay, sau m o t t h o i gian hoat d o n g deu co m o t sai so nhat d i n h , can p h a i d u o c h i e u chuan d i n h ky d l dam bao t i n cay ciia so l i e u b Xay dung he thdng quan trac tap trung tu dong He thong quan trac tap trung t u dong la he thong thiet b i co kha nang dac m o t so thong so ham 16 n h u ham l u o n g k h i Metan, toe gio, k h o i , ham l u o n g mot so loai k h i doc, t i n h hang hoat dong ciia mot so thiet b i va truyen so lieu len h a m quan trac trung tarn dat h e n mat dat He thong cung co kha nang t u dong xir l y mot so t r u o n g hop khan cap ( k h i ham luong k h i metan tang cao qua g i o i han cho phep, he thong se phat t i n hieu bao dong, dong thoi t u dong cat dien k h u vuc co ham luong k h i metan tang cao) H i e n nay, 26 he t h o n g quan trac k h i da duoc lap dat c o n g t a i cac d o n v i Hinh He thong quan true tu ddng khai thac than h a m 16 T r o n g co 22 he t h o n g cua B a L a n , 03 he t h i n g cua V i e t N a m va 01 he thong ciia N h a t B a n san xuat M o t so m o khac cung dang t r i i n k h a i k l hoach dan t u lap dat n h u C o n g t y than N a m M a u , x i nghiep than T h a n g L o n g 3.5 Giai phap thao metan Qua n g h i e n c u u v a t h a m khao cac cong nghe thao k h i da v a dang ap dung tai mot so nuoc tren the g i o i , p h u o n g phap thao k h i truoc k h a i thac to ta u u v i e t t r o n g v a n de giam muc nguy h i e m ve chay no k h i metan cho cac v i a than co chua k h i loai I I I v a sieu hang nhu C o n g t y than M a o K h e , Q u a n g H a n h , T h n g N h a t , D o n g V o n g , D u o n g H u y v a Cong ty 35 Thao k h i t r u o c k h i k h a i thac se l a m cho l u o n g k h i metan t r o n g v i a g i a m d i dang k l va se han c h i t l i da l u o n g k h i M e t a n thoat vao 16 c h o t r o n g qua t r i n h k h a i thac T u y n h i e n , d l thao hieu qua theo p h u o n g phap d o i h o i phai co t h o n g t i n ve m a i n thau k h i , kha nang hap t h u k h i , toe nha k h i cua than v a dat da x u n g quanh Q u a viec n g h i e n c u u tham thau mr)t so m a u than ciia m o M a o K h e (Phung Quoc H u y , ) cho thay than A n t r a x i t co dp tham thau k h i thap h o n than B i t u m i o u s ( k < l m D ) V i vay, k h i k h o a n thao k h i truoc k h i khai thac can phai ap d u n g cac p h u o n g phap de l a m tang t h a m thau k h i x u n g quanh lo khoan thao k h i n h u k h o a n cac l o k h o a n song song, k h o a n cac lo k h o a n d i n h h u o n g , k i c h thich thuy lire day 16 khoan Thao k h i sau k h i k h a i thac t u y k h o n g l a m g i a m true tiep h a m l u o n g k h i metan d i vao 16 cho k h i k h a i thac, n h u n g no l a m g i a m h a m l u o n g k h i metan t i c h t u t r o n g cac khoang de lai sau k h i k h a i thac T r o n g cac khoang t r o n g sau k h i k h a i thac nay, he s6 t h u h o i than k h o n g cao dan den l u o n g than c o n sot l a i t r o n g cac khoang da pha hoa, l u o n g than o vach va nen t r o n g k h u v u c da k h a i thac v a n c o n nhieu T h a n tai cac k h u v u c la than b d r o i hoac la 456 Hpi Cong nghi nghiep khoa hoc mo tien kT thuat tien mo qudc vi sir phat te - trien ben 2010 vung cue than nho nen metan rat de dang nha khoi be mat cua than Luong se tich tu a cac khoang da k h a i thac va ro r i , thoat vao t r o n g k h u v u c dang k h a i thac qua 16 cho, qua tuong chan t h o n g qua he thong thong g i o V i vay, p h u o n g phap se ho t r o cong tac thong gio, gop phan l a m g i a m t o i da l u o n g k h i thoat vao 16 c h o tir cac k h u v u c da pha hoa 3.6 Dao tqo an toan, truyen thong Hau het cac t a i nan x a y t r o n g nganh Than duoc xac d i n h la nguyen nhan chii quan ciia can bo quan l y hoac cong nhan lao dong Nguoi lao dong t h u o n g x u y e n l a m viec t r o n g ham 16 de sinh t u t u o n g c h i i quan, coi thuang nhirng m o i n g u y h i e m k h o n g n h i n thay tan mat C h i n h v i vay, viec dao tao, tuyen t r u y e n nang cao y thirc p h o n g ngira n g u y c o chay no k h i metan cho can bo, cong nhan true tiep lao d o n g la viec lam rat can thiet N g o a i c h u a n g t r i n h t u dao tao ve an toan, cac C o n g t y k h a i thac than ham 16 ciing v o i T r u n g t a m A n toan M da t i e n hanh dao tao, t r i n h dien thir n g h i e m chay no k h i metan he t h o n g d u o n g 16 m o p h o n g cho tat Hinh Dao tqo an toan vd trinh dien chay no metan tqi hien trudng ca can bo, cong nhan true tiep l a m viec t r o n g h a m 16 v o i so l u o t n g u o i duoc t h a m gia len t o i gan 80.000 n g u o i Du an thao thu nghiem tai Cong ty than Khe Cham Trong t h a i gian t o i , V i e n K h o a hoc C o n g nghe m o se p h o i h o p v o i cac chuyen gia B a Lan thiet ke, trien k h a i thir n g h i e m he t h o n g thao k h i cho v i a 13.1 A , C o n g t y than K h e C h a m (du kien se trien k h a i t r o n g n a m 2010) D u an se t i e n hanh k h o a n cac c u m l o khoan ( m o i c u m gom 16 khoan, chieu dai 16 Bang Cdc thdng so ky thuat ciia khu vuc lb cho via 13.1 A khoan la 80m, d u o n g k i n h O = 65 mm) len phia vach v i a tir 16 TT Thong so ky thuat Gia Don v j ban xuyen thong gio (each vach tri via theo chieu thang d u n g Chieu day via trung binh m 2.5 khoang m ) de" t h u h o i k h i tir 14 Goc doc trung binh ciia via khoang khong gian da k h a i thac Do cung ciia dat da vach 6-8 sau 16 cho d i qua ( h i n h 6) Trong luong the tich ciia than T/m 1.6 Ngoai ra, thuoc vao dieu m Chieu dai theo phuong trung binh 660 kien dat da t r u v i a , co the m 130 Chieu dai theo huang doc khoan cac 16 khoan x u o n g t r u de Do chiia metan tu nhien Ion nhat m /T 5.7 thu hoi k h i metan thoat x u o n g T/ngay 700 San lugng khai thac dem tru via K h i metan t h u h o i duoc dem tir khoang da k h a i thac d u o c dan Dg thoat metan tuong doi m /T.ng 14.63 len mat bang t h o n g qua he d thong d u o n g o n g c h o n g t i n h 10 Luu luong gio qua 16 cha m /s 19.06 dien dat doc theo cac d u o n g 16 11 ™ Tiet dien sir dung ciia 16 doc via 7.3 m Khi duoc hut l e n tren mat dat thong gio 3 kc 3 nha he 457 t h o n g t r a m thao Hoi Cong nghi nghiep khoa hoc md tien kT thuat tien md qudc vi su phat ti trien - 2010 ben vung metan dat tren mat bang san cong nghiep ( h i n h 7) D o la d u an thir n g h i e m nen chua danh gia duoc sir o n d i n h cua n g u o n k h i metan thao duoc V i vay, h i e n t a i c h u a str d u n g k h i metan thu duoc vao cac m u c d i c h n h u chay m a y phat dien, d u n nuoc n o n g , l a m k h i dot cho sinh hoat K h i metan t h u d u o c t r o n g d u an thir n g h i e m se d u o c hoa loang v o i k h o n g k h i va thai vao quyen n h o cac quat k h u e c h tan Hinh Hinh So bo tri mang id khoan thao khu vuc lb cha via 13-1 Sa khoi he thong thao metan tqi Cong ty than Khe Cham Cac thong so ky thuat ciia khu vuc 16 cho du kien thao duoc the hien tren bang Ket luan De nang cao m u c an toan ve chay no k h i metan khai thac than ham 16, cac don v i khai thac than ham 16 can thuc hien nghiem tuc, co ke hoach cac giai phap neu tren T i r rmirng c o so d u l i e u ve chua k h i t r o n g v i a than v a h a m l u o n g k h i 16 458 Hdi Cong nghi nghiep khoa hoc md tien ki thuat tien md quoc vi su phat te - trien 2010 ben viing khoan thirc n g h i e m T r u n g tam A n toan m o tien hanh n g h i e n c h u t r o n g t h a i gian dai Cac tac gia da dh xuat giai phap thao k h i de giai quyet v a n de an toan chay no k h i M e t a n d o i voi mot s6 m o than h a m 16 co chua k h i cao, m u c tap t r u n g hoa san xuat cao V § k h i a canh an toan, k h i k h a i thac x u o n g sau, chua k h i t r o n g v i a than se cang tang Cong nghe thao k h i metan se giai quyet dugc v a n de t h o n g g i o , v a n de an toan chay n6 k h i metan t r o n g m o h a m 16 gop phan dam bao an toan cho san xuat va su phat trien ben v u n g cua nganh than N g a n h than V i e t N a m can nghien c u u v a t r i e n k h a i ap d u n g thir n g h i e m 01 he t h i n g thao k h i metan de l a m mau, l a m ca sa cho viec t r i e n k h a i cac he t h o n g thao k h i khac tuong lai cho cac m o co chua k h i cao n h u Quang H a n h , M a o K h e , T h o n g Nhat./ Tdi lieu tham khdo Tran Tu Ba 2009 Nghien cuu anh huong ciia cac yeu to mo - dja chat va cong nghe den thoat Metan tuong doi a mot so 16 chg dai cac mo than ham 16 viing Quang Ninh Luan an tien sy ky thuat Phung Quoc Huy, Sasaki Kyuro, Sugai Yuichi Nghien cuu xac djnh dg tham thau a mo than Mao Khe Thong tin Khoa hoc Cong nghe mo, so 3/2008 Phung Quoc Huy, Kyuro Sasaki, Yuichi Sugai, Satoshi Ichikawa, 2010 Carbon dioxide gas permeability o f coal core samples and estimation o f fracture aperture width International Journal of Coal Geology 83: 1-10 Tran Tu Ba, Pham Chan Chinh, L y Manh Thang Thao k h i Metan va kha nang thao Metan a Vi^t Nam Thong tin Khoa hgc Cong nghe mo, so 5/2009 Nguyen Xuan Thao Cong tac khoan va van de an toan phong chong buc nuac va cac mo than ham 16 Thong tin Khoa hgc Cong ngh£ mo, so 2+3/2005 Nguyen Xuan Thao, Nguyen Tran Tuan Nghien cuu cong nghe khoan thao nham thu hoi Metan va ngan ngira chay no cac mo than ham 16 viing Quang Ninh Thong tin Khoa hoc Cong ngh? mo, so 7/2004 P.Q Huy, Sasaki, K., Sugai, Y , Kiga, T., Fujioka, M , Adachi, T., 2009 Effects o f S and pH concentration on C adsorption capacity in coal seams for C sequestration with considerations for flue gas from coal-fired power plants Journal o f Canadian Petroleum and Technology 48(10), 58-63 2 P Q Huy, K Sasaki, Y Sugai, Measurements o f C H and C adsorption isotherms for coals and its role to enhancing Coalbed Methane and C sequestration Proceeding o f International Workshop on Earth Science and Technology, 271-278(2006) th Somerton, W.H., Soylemezoglu, I M Dudley, R.C., 1975 Effect o f stress on permeability o f coal Int J Rock Mech M i n Sci & Geomechi Anstr 12: 129-145 10 Sasaki, K., Fujii, K., Yamaguchi, S., Ohga, K., Hattori, K , Kishi, Y , 2004 C Gas permeability and adsorption o f coal samples in consideration o f C sequestration into coal seams Journal o f the Mining and Materials Processing Institute o f Japan 120 (8), 461-458 2 459 ... CT D V than, +100 2.25 I 11/2007 Khe Tam Da Bac Thugng, -70/-10 3.84 II 07/2009 Cam Thanh 14.4 D V than, -20 1.24 I 05/2009 Cao Thang 14 Lo chan, -90 0.40 I 08/2007 Giap Khau khu I I D V than, ... Cong ngh£ mo, so 2+3/2005 Nguyen Xuan Thao, Nguyen Tran Tuan Nghien cuu cong nghe khoan thao nham thu hoi Metan va ngan ngira chay no cac mo than ham 16 viing Quang Ninh Thong tin Khoa hoc Cong... +30 0.18 I 11/2009 Thanh Cong khu B M Thuong, -60/-40 0.66 I 07/2009 Mong Duong G9 Dong D V than, -32 2.70 II 06/2007 Phan Me Lo chg, -204 0.72 I 07/2007 Ha Lam 10 khu I I D V than, +10 1.92 I 12/2008