Hdi nghi khoa hoc kT thuat mo qudc ti 2010 Cong nghiep mo tien tien vi su phat trien ben vung PHAN TICH KIEM SOAT AP LITC MO TAI GlTONG LO CHO CO G I O » I H O A D O N G B O C O D A V A C H B I P H A[.]
Hdi Cong nghi nghiep khoa hoc mo tien kT thuat tien mo qudc vi su phat ti trien ben 2010 vung PHAN TICH KIEM SOAT AP LITC MO TAI GlTONG LO CHO CO GIO»I H O A D O N G B O C O D A V A C H • B I P H A H U Y • M A N H • ThS Yadong Wang, ThS Pengfei Xu T r u o n g D a i hoc C o n g nghe L i e u N i n h , T r u n g Quoc Tom tat: Do co su xudt hien gia tdng tdi trqng tqi mot sd guong khai thdc nen dd hinh dam ddt dd phia tren khu vuc khai thdc Dua tren gid thiet rang vach Id duoc bao phu bang cdc tqo ddt dd, bdi bao dd gidi thich hien tuqng gia tdng tdi trqng len cdc cot clid'ng guong thdng qua phuong phap khai thdc co gidi hda toan phan vd bang cdc tinh toan ly thuyet, cdc tdc gid cung dua bien phap kiem soat dp luc mo tqi guong cd vach bi phd huy manh Gioi thieu C o n g nghe k h a i thac ca g i a i hoa toan bo tran than la m o t p h u o n g phap k i n h te va hieu qua nham dat san l u o n g va hieu suat cao K y thuat c a g i o i hoa toan bo duoc ap dung cho cac v i a than day v o i m o t lan khau, gay n h u n g b i e n dang ve cau true l o p dat da phia tren C h i e u day v i a t r o n g k h a i thac tran c o g i o i hoa toan bo tang se dan den bien dang lop dat da phia tren tang D u a tren cac ket qua nghien c u u t r u o c day, bai bao g i o i thieu mot gia thiet ve vach co ban hai giai doan thong qua viec ket h o p cac d i e u kien thuc te ve ap luc m o de giai t h i c h cac hien t u o n g ve g u o n g k h a i thac tran than co g i o i hoa toan bo nham gop phan k i e m soat duoc ap lire m o T o n g q u a n ve d u a n Day la dir an ap d u n g p h u o n g phap k h a i thac tran than c o g i o i hoa toan bo a muc - 600m, k h a i thac t r i e u tan than antraxit thuoc Tap doan k h a i thac than Shanxi M o than thuoc loai co chua k h i thap va t u o n g d o i on dinh, k h o n g co h i e n t u o n g than tir chay V i a day 5,8 ~ 8,0m V a i ~ l a p kep, v i a co he so c u n g 1,5 ~ 3,5, goc doc tir 4° den 10 , vach true tiep g o m l o p p h i e n set day m , l o p da p h i e n chua cat ket day m , ngoai lop cat ket m i n co chua cac dirt gay C h i e u cao khau la m va pha hoa 5m.Phuong phap pha hoa toan bo dugc ap dung de k i e m soat vach T h a n sau k h a i thac dugc van chuyen bang mang cao N g i d u n g v a p h u o n g p h a p k i e m soat ap l u c m o 2.1 Quan hda toan trac dp ben chong giu phuong phap khai thdc phd hda co gioi bp T a i g u o n g k h a i thac bo t r i lap dat sau n h o m t u y e n quan trac, m o i ben lap dat hai bo giam sat h o n g ngoai D Y J - I I B de quan trac he thong dan chong N g o a i ra, lap dat mot bo g i a m sat ap lire tai m o i cot chong co lien quan o m o i hang de quan trac ap luc ciia cac cot truoc va sau cot H a i m o t lan, c u each n a m phut, cac bo g i a m sat ap luc h o n g ngoai co nhiem vu ghi chep cac so l i e u ve ap luc m o Cac so l i e u thu thap se duoc he t h o n g may tinh quan ly so lieu quan trac phan t i c h 486 Hpi Cong nghi khoa nghiep hoc mo tien kT thuat tien mo quoc vi su phat te - trien ben 2010 vung 2.2 Quan trdc ddt dd xung quanh dudng lb pham vi dan chong dich chuyen T r o n g qua t r i n h k h a i thac v a t i l n g u o n g , t u y theo d i e u k i e n thuc te m a lap dat cac tram quan trac ap luc ddt da x u n g quanh d u o n g 16 T i n h tir g u o n g khau, lan l u o t co ba k h u vuc c i n dat tram quan trac la m , m va m Sir dung d o n g ho h o i t u va thuoc de gia t r i d i c h chuyen tai cac d i e m phia tren va phia d u o i cua vach cung n h u hai ben hong duong 16 de phan t i c h quy luat ciia ap luc m o L i p dat b n dong h6 ap lire cot chong thuy luc d o n m a h i e u K B J - I I I - I d tren dan chong p h a m v i de t h u thap cac so l i e u m o i Tai d u o n g 16 v a n chuyen, tien hanh khoan m o t so 16 k h o a n vao h o n g 16 each g u o n g khau lan l u o t la m , m , m v a 120m Thiet b i k i l m tra t o i x p B A - I I duoc sir dung de k i e m tra m u c v o v u n ciia dat da va than k h u vuc x u n g quanh d u o n g 16 N g o a i c o n ap dung p h u o n g phap quan trac 16 khoan sir dung thiet b i ong chua nuoc hai dau co nut b i t de k i e m tra chieu cao khe nut dan nuoc qua t r i n h k h a i thac pha hoa tran than co gioi hoa toan bo, xac d i n h m u c phat trien cac dut gay co t r o n g l o p dat da phia tren P h a n t i c h cac so l i e u t h u c n g h i e m 3.1 Xac dinh muc tang dp luc tqi guong khai thdc T r o n g qua t r i n h k i e m tra cac gia t r i cue dai ciia ap lire len dan chong, khoang each phia truoc cua g u o n g k h a i thac lan l u o t la 12m, 36,5m, , m , , m va 102,2m va theo khoang each cac b u o c gia tang ap lire lan l u o t la , m , , m , m , , m , 12,4m va 25,5m Theo cac so l i e u t h i khoang each bon buoc dau dai khoang each hai buoc sau ngan mire t r u n g b i n h la , m So ap lire k i e m tra tai g u o n g k h a i thac bang cac bo giam sat ap lire h o n g ngoai duoc the hien tren h i n h Below test zone 30 Middle test zone HO Upper test zone OO 120 ISO ISO ZIO Circulating frequency of the working face Hinh So Men thien tdi lam viec trung binh cua dan chong X C * 3.2 Phan tich cdc so lieu cua dan chong dich chuyen D o n g ho ap luc ciia dan chong cho thay b o n cot chong p h i a t r u o c ban dau t u o n g doi on d i n h T u y nhien, k h i g u o n g tien khoang 100m t h i ap lire tang len Theo cac so l i e u quan trac d u o n g 16, k h i ap l y c dat cue dai, t r u o t t r o i than, d i c h c h u y e n nen 16 tang, d u o n g 16 bi bien dang m a n h ( h i n h 2) 3.3 Phan tich suphdn manh cua than ndc De k i e m tra sir phan m a n h ciia than noc, n g u o i ta da t i e n hanh k i e m tra t o i x o p ciia dat da bao quanh t r o n g c i i n g mot 16 khoan, v a n toe a m k i e m tra thap dan theo tien guong T h e m vao do, cac 16 khoan gan g u o n g co van toe a m thap h o n so v o i 487 Hdi Cong nghi khoa nghiep hoc md tien ki thuat tien md quoc vi su phat te - trien 2010 ben vung cac 16 k h o a n o x a g u o n g N h u v a y co the ket luan la than noc b i pha h u y tir xa d i n gan k h i b i anh h u o n g cua ap luc chong v a sir phan m a n h duoc xac d i n h theo khoang each t o i g u o n g K h o a n g each cang ngan, sir phan m a n h cang m a n h ( h i n h 3) aM3?x l ,„ ,„ ^ —~" "* _^r':