Thong tin khoa hpc cong nghe mo Xdc dinh anh huang DO VIEC KHAI THAC NHIEU LOP LEN DAT DA MO In this paper, the author introduces the application of digital models PHAM QUANG AI for determining the lo[.]
Thong tin khoa hpc cong nghe mo Xdc dinh anh huang DO VIEC KHAI THAC NHIEU LOP LEN DAT DA MO In this paper, the author introduces the application of digital models for determining the long range action of the fractured zone in rock mass caused by multilayer mining activities at the seam A/* 510 of Staszic coal mine Md dau sd de xac dinh tam xa vung 66 Vd dat da md cho trudng hpp khai thac bang nhieu Idp tai Via sd 510 cua md than da „Staszic" Ngudi ta da phan tfch vung 66 vp vdi kha nang ve sau se ap dung khai thac cho via sd 501, la via nam phfa tren via sdSIO Viec xac dinh tam xa cua vung dd v3 (pha hda) khai thac nhieu Idp la mdt van de thLf yeu ddi vdi 66 ben vCfng cua chdng 16 md, cung nhu ddi vdi an toan lao ddng cho cac td san xuat Van de trd nen dac biet quan trpng trudng hpp khai thac via, ma via nam phfa tren mpt via da dUpc khai thac trudc Neu khoang each giufa cac via ma qua nhd thi cd the gay sU dd v6 cau true cua via nam phfa tren, lam cho viec khai thac ve sau cua via nam tren trd bat kha thi Mo hinh dat da md MP hinh dat da md, ma dUa vao nd ngUdi ta se phan tich bang kT thuat sd tam xa cua Lfng lUc (ap suat md) dat da tai vung true tiep lien ke vdi cac via sd 501 va 510, la mpt hinh khien phang cd kfch thudc 1000m theo chieu ngang bang va 250m theo chieu dCfng M6 hinh dat da md cho trudc cd phUdng Trong bai luan ngudi ta da ap dung md hinh kT thuat PHAM QUANG AI Trudng Dai hoc Bach khoa Slqsk, Gliwice vu6ng gdc vdi hudng tien cua cac gUdng 16 chp tU 01b #04b tai via sd510 Tai 66 sau khoang 813m ngudi ta da tao mo hinh cho via than sd 501 cd dp day la 5m, tai 66 sau 840m: via 510 cd dp day la 10m, va chfnh day la via dang dupc khai thac Vach cua via sd 501 dupc mo ta nhu la cau true cua 17 Idp dat da Dd la nhufng Idp xen ke cua da phien-set va da cat cd cac dp day tU 1,2m den 20m Tru cua via sd 501 gdm lien tiep cac loai Idp da: phiencat vdi 66 day tU 3,2m den 5,5m, Idp da cat cd dp day tU 9,5 den 27m va Idp da phien- Pz T T T ! T T T M M M ! T T T T r I T T I T T M ! M T T T I ! I ! r-?)-v»»»y->v>> >>>r» >i^»>->)>>>>)>»>>>»»>>-v>)-)->))v>->>>>>>^:>y>/>>»^ -»>»>»^T ' i j -1^ ) -il .u- i.L j j i j l^-n—•.; Hinh Md hinh dat da md KHCNM S6 122008* DIA CO M() u J—n—n—a.—:i—cr Thong tin khoa hoc cong nghe m o set vdi dp day \\J den 11,2m Tru cija via sd 510, thieu dCf lieu cu the nen ngUdi ta da md phdng tUa nhu la cd cau true cua ldp da phien-set cd dp day tCf 8,8m den 9,1m va mdt ldp than xen giCra chung cd dp day 0,1m Phan lai cua tru via sd 510 dUpc m6 phdng nhU la mpt Idp ddng chat thay the, vdi cac chi sd ve bien dang va sufc ben dupc chpn nhu la cac gia trj trung binh dac trung cija dat da md tai vung dang khai thac Mat cat CLia cac ldp dat da tai vung ma via sd 510 da dupc thiet ke va khai thac da dupc chap nhan tren cd sd cac Id khoan tham dd sd B 250/63 va B 3/56 tai md than "Staszic Tai via sd 510 se khai thac bang cac gUdng IP chp cd dp dai khoang 200 m Cac gUdng Id chp dupc khai thac lan lupt tCf sd 01b den 04b se dUpc phan tach bang cac tru chdng cd chieu rpng khoang 5m Chieu cao cua phfa tren gUdng Id djnh bang mo hinh cap kT thuat sd, cd chieu cao cua Lfng dat da vach pha hda dupc xac gia nhieu luu y tdi lUc Chdng Id cac dUdng 16 da dupc m6 phdng dUa vao td hpp cac luc tac ddng theo hudng vudng gdc vdi cac canh cua tiet dien md dudng Id [6] Sd cua m6 hinh dat da md dupc gidi thieu tren hinh De de dpc, cac vung 60 vP tai cac via than va tai vung lan can da't da md vay quanh, se dUpc bieu di§n nhU the la cac vung nhd hdn Cac Idp tao nen m6 hinh dat da md da dupc m6 ta bang dieu kien dp kien cdtheo c6ng thLfc Coulomb - Mohr [3,4]: / = -(o", -iT2)+-((T, + c r , ) s i n p - i c o s p = (T, > (jj > cr^ oraz dia a^ < R, Hoac bang dieu kien Lfng luc keo gian Idn nhat [5]: Ma dd: k - Lien ket, r- Gdc npi ma sat s, Do kien cd tdi han cho keo gian theo mpt true Cac chi sd dp kien cd cua cac ldp da't da da dUpc chap nhan de tinh toan, dUpc tap hpp bang sd 1.1 tren cd sd cac tai lieu da nhan dupc tCf md than "Staszic" va sach [3] Cac chi sd ve dp kien cd cua cac Idp da Md hinh tren dUdc chia mdt mang ludi gdm cac phan tLf cd hinh chCf nhat va tam giac Khi lap mang ludi md hinh ngUdi ta da lam theo nguyen tac la cac diem nut tai cac canh bd CLia hinh khien chi cd the djch chuyen dpc theo true Z (true dung chi 66 sau) Cac diem nut, ma chung nam tren canh dudi cija hinh khien, chi cd the djch chuyen theo phUdng true ngang X Cac diem nut khac cua md hinh thi deu cd the di chuyen tu theo phUdng tu bat ki nam tren mat phang X-Z[1,2] Khi xac dinh cac dieu kien gidi han thi ngudi ta da gia thiet rang: Canh tren cija md hinh dupc ap dat mdt ap lUc t h i n g dCfng la P,=20,5 [MPa], xuat phat tU dp sau cua canh tren da't da md Gia trj cua Lfng lUc nguyen thuy theo phUdng dCfng s^ hinh khien se dupc cdng them trpng lupng cua cac Idp da't da md nam md hinh Lfng luc ngang nguyen thuy s, da dupc xac dinh dUa theo ly thuyet cd dien ve sU dan hdi va chi la mpt phan cua Lfng lUc t h i n g dCfng (phu thupc vao he so Poisson) [4] Dua vao md hinh da't da md da gidi thieu d tren mdt Bang Ldp E n r Re Rr k f [MPa] [kg/m'] [MPa] [MPa] [MPa] [dp goc] 2300 35^58 3,5^5,8 30 Oa cat 11000 [-] 0,12 Da set 7000 0,15 2450 32^38 3,2^3,8 2,5 30 Da bui ket 8000 0,11 2450 33^53 3,3^5,6 30 Via sd 501 2000 0,25 1500 18 1,8 1,5 24 Via sd 510 2000 0,25 1500 18 1,8 1,5 24 120 0,25 2300 0 10 Pha hda (dd vd) KHCNM SO 12/2008* DIA CO MO T h o n g t i n k h o a hoc c o n g nghe m o qua trinh khai thac gdm nhieu phan doan da dupc m6 phdng va gdm cd cac phan doan nhu sau: - Xac djnh Lfng luc ngang nguyen thuy dat da md, - Md phdng qua trinh khai thac md cho Idp than thCf nhat via sd510, - M6 phdng qua trinh khai thac md cho Idp than thCf via sd510 Thao luan ve cac ket qua tinh toan Sau da m6 phdng xong hien trang cua Lfng lUc nguyen thuy hinh khien cua m6 hinh da't da md, ngUdi ta da tien hanh lam md phdng khai thac than vi sd 510 Phan doan mo phdng nham muc dfch xac dinh anh hudng cua viec khai thac than tren gUdng 16 chp tdi da't da md, dac biet la sU anh hudng tdi via than nam phfa tren mang sd 501 Dua vao cac ket qua da thu dupc, ta cd the ket luan rang: Viec khai thac cac Idp cua via sd 510 vdi dp day 3m, da tao vach via mpt vung dd v3 (pha hda), ma nd cd dp cao tdi khoang 14,8m (Hinh 2) Do cao dd vP cUc dai (vung pha hda cao) da dupc ghi nhan tai diem each gUdng 16 chuan bi 2b khoang 75m, ddng thdi day cung la gidi han cua viec khai thac Idp thCf nhat Tai vung cua hai gUdng IP chuan bj kieu „song sinh", dupc phan each bang mpt bd dau than, thi dp cao pha hda vach via cd nhd hdn va tdi khoang 7m Khi danh gia anh hudng cua viec khai thac than tdi via sd 501, nam phfa tren, can phai khang djnh rang: viec khai thac mpt Idp than via sd 510, vdi dp day 3m, khPng gay bien ddi gi via sd 501 Nhung dd vd kh6ng dang ke cau true cua via sd 501 da dUpc ghi lai chi vung cua bd khai thac Cung cd xuat hien nhung vung gidng nhU vay cac Idp da phien thupc phan vach va tru, nam sat via sd 510 Trong tru cua dudng 16 thi dp sau CLfc dai cua dd vd cau true da't da la khoang 6,5m, cd nghTa la nhufng dd vP khPng vupt ngoai pham vi cua via sd 510 Tang 66 day cija Idp khai thac via sd 510 tdi 4,5m da lam tang vung dd vd vach via len tdi 20,3m (Hinh 3) Cung gidng nhu trUdng hpp khau ldp dau tien vdi dp day 3m dp cao tdi da cua dd vP (vung pha hda cao) da dupc ghi lai tai diem each xa gUdng IP chp chuan bj 2b khoang 75m, day cung la gidi han khai thac cua ldp thCf nhat Tang dp cao cua gUdng 16 chp tai ldp thu" nhat them 1,5m da lam tang them dp cao cua vung dd vP vach (pha hda cao) them 2,7m Tai vung cua cac gUdng 16 chp chuan bj kieu „song sinh" each mpt bd dau than, thi dp cao cua dd vd vach giam xudng den mCfc 9m Tang 66 cao cua gUdng 16 ldp than thu" nhat da lam tang sU dd vd cua via sd 501 vung bd khai thac cua via sd 510 Cac sU dd vd KHCNM s6 12 2008* DIA CO MO van tiep tuc mang tfnh chat la cac vung heng re vdi dp rpng khong dang ke Do vay can khang djnh rang: viec khau ldp than cd dp day 4,5m via sd 510 khdng gay anh hudng xau tdi via sd 501 nam d phfa tren Dp sau dd vd cue dai da tru cua via la khoang 6,5m, cd nghTa la nhCfng dd v3 khPng vupt ngoai gidi han cua via sd 510 Viec khai thac Idp thCf cd dp day la 3m via sd 510 da lam tang vung dd vP vach (pha hda cao) tdi dp 21,5m (hinh 4) Viec tang mCfc 66 66 vP vach cd dp Idn khPng dang ke neu dem so sanh vdi vung dd vd dupc tao sau khai thac ldp dau tien Do cao cue dai cua vung pha hda cao da dupc ghi lai la d diem khoang 85m tfnh tu gUdng IP chp tham sd 2b, ddng thdi day la gidi han khai thac ldp than thCf nhat Tai vung cua hai dudng IP chp chuan bi kieu „song sinh", each bang mpt bP dau than, 66 cao cua dd vd vach, trudng hpp khai thac Idp than thCf 2, khong cd gi thay ddi Viec khai thac ldp than thCf cua via sd 510 da lam tang dp vong cua cac Idp da nam phfa tren via sd 510 Tao sU djch chuyen cua cac vung dd v3 via sd 501 tai vung bd khai thac via sd 510 va lam xuat hien cac vung mdi mien tiep can giCfa cac ldp Cac tfnh toan bang kT thuat sd da chi rang: viec khai thac ldp than thCf khdng gay anh hudng ddi vdi via sd501 Thong tin khoa hoc cong nghe m o Dp sau CLfc dai cua d6 vd cau trUc tru dudng 16 la khoang 6,6m, va bao gdm ca Idp da phien nam dudi via sd 510 Tdm tat lai va ket luan Muc dfch cua bai luan la phan tfch bang kT thuat sd cac vung dd vd dat da md, dupc tao khai thac than nhieu ldp via sd 510 tai md than „Staszic" Khi ap dung tao md hinh sd ngudi ta da cd gang xac djnh tam xa cua cac 60 vP dat da md, nam ke phfa tren via dang dupc khai thac, cung kha nang khai thac ve sau via sd 501 nam phfa tren via sd 510 Dua vao cac ket qua tfnh toan sd da thu dUpc ngudi ta da rUt dUpc cac ket luan nhu sau: Viec khai thac ldp than cua via sd 510 vdi dp day la 3m da tao vung dd vP (pha hda) vach via, ma 66 cao CLfc dai cua nd la khoang 14,8m Khi danh gia sU anh hudng cua viec khai thac tdi via sd 501, nam d phfa tren, can khing djnh rang viec khai thac ldp than via sd 510 cd dp day la 3m, khPng lam thay ddi gi via sd 501 Nhung dd vd khdng dang ke cau trUc cua via sd 501 da dupc ghi lai chi cd vung bd khai thac cua via sd 510 Viec tang dp day cua ldp than dupc khai thac tai via sd 510 tdi 4,5m da lam tang vung dd vP vach tdi dp cao 20,3m Viec tang dp cao cua gUdng Id chp tai ldp than thCf nhat da tao sU tang 60 vd cua via sd 501 tai vung bd khai thac cua via sd 510 VUNG FHA HUY Hinh Cac vung dovd dat da mo sau khai thac Idp than cua via so 510 co day la 3m VUNG PHA HUY Hinh Cac vung dovd dat da mo sau khai thac Idp than cua via so 510 cd day la 4,5m :;:3» ""] WMI VUNG PHA HUY Hinh Cac vung vd dat da mo sau khai thac Idp than cua via so 510 KHCNM SO 12/2008* DIA CO MO Thong tin khoa hoc cong nghe md NhCfng dd v6 van tiep tuc chi cd tfnh chat la cac vung rieng re vdi tam xa khdng dang ke Vi vay can khang djnh rang: viec khai thac Idp than cd dp day la 4,5m via sd 510 khPng gay anh hudng xau tdi via sd sd 501 nam d phfa tren chi rang: viec khai thac Idp than thLf khdng gay anh hudng tdi via sd 501 Viec khai thac Idp than thLf cua via sd 510 da lam tang dp vong cua cac Idp da't da khdng bj pha hijy, nam d phfa tren via sd 510 Va da gay sU di chuyen cua cac vung dd vP vdn cd via so 501 tai vung bd khai thac cua via sd 510 va tao cac vung dd v3 mdi thupc mien tiep xuc giufa cac Idp Cac tfnh toan kT thuat sd da dUdc thUc hien da thdi gian chay thCf gUdng 16 Tai lieu tham khao Drz"zla B., Wesdowski M.: Xac djnh cac vung bien Kidybihski A.: Dai cUdng ve Dja-kT thuat md NXB Silesia 1982 Kieczek Z.: Dia-cd hoc md NXB KT thuat Silesia Katowice 1994 1999 Kwasniewski M., Wang J.: MP phdng vi tfnh cho khai thac via than bang he gUdng IP chp cd pha hda vach, II Bien ddng cCia cac dCft gay dudi tac dpng cua khai thac than Sach Giao Khoa cua trudng Bach khoa Gliwice 1994 Z 221 Filcek H., Walaszczyk J., Tajdus A.: Cac phUdng phap vi tfnh cd-dja md NXB Silesia, Katowice 1994 Wesoiowski M.: M6 hinh kT thuat sd cua dudng ham 16 dat da md cd tang Idp Sach Giao khoa cua trudng Bach khoa Gliwice 2002 Z 254 dang da't da md chp Phan 1: Cac nguyen ly chung viec tao mP hinh kT thuat sd cho da't da md Sach Giao khoa cua trUdng Bach khoa Gliwice Z 239 phan loai mo theo cap no /v' ^'^ Mot so ket qua x a c dinh chufa itietan de phat trien nganh than (Tiep theo trang 30) 2000 Thuyet minh tap 11 Tr vung Quang Ninh den nam 2010", Bp CPng nghiep nam 205-207 - DP chLfa khf metan cd xu hudng tang theo chieu sau khai thac, mCfc dp tang nhieu ft cac bien phap ky thuat cdng nghe phu hpp phPng chdng chay nd khf theo tung khu vuc khac Tai lieu tham khao - Do chufa khf metan cac via than vung quang Ninh bien dpng rat manh theo vung Trong mdi via dp chCfa khf cung bien dpng rat manh theo mat ngang - Can lien tuc khao sat xac djnh dp chLfa khf metan qua trinh khai thac de dinh vj cac khu vUc cd dp chLfa khf cao nham dUa Nguyin Tien Bao, Zumailo.A.V Bao cao tdng ket de tai khoa hpc Nha nudc ma sd 44-02-01-04 "Nghien cCfu chifa tram tich chita than, phan dong bSc be than Quang Ninh" Ha Npi 1986.Tr.120-190 Phung Manh Dac, Tran Tu Ba, Bao cao tdng ket du an: "Quy hoach tong the KHCNM S6 12/2008* DIA CO MO B.Kozlowski, "Prognozowanie zagrozen metanowych w kopalniach glebinowych" (Du bao hiem hoa metan md ham 16) Nha xuat ban Dai hpc Bach khoa Silesia Balan - Nam 1986 Tr 35-48 Krauze, Lukowicz "Phat hien, du bao, kiem soat, phdng cho'ng hiem hoa metan cac mo than ham Id" Sach phat hanh npi bp Tap doan Than Khoang san Viet Nam Ha Npi 2004 Tr 14-40 ... 501 tai vung bd khai thac cua via sd 510 VUNG FHA HUY Hinh Cac vung dovd dat da mo sau khai thac Idp than cua via so 510 co day la 3m VUNG PHA HUY Hinh Cac vung dovd dat da mo sau khai thac Idp... g nghe m o qua trinh khai thac gdm nhieu phan doan da dupc m6 phdng va gdm cd cac phan doan nhu sau: - Xac djnh Lfng luc ngang nguyen thuy dat da md, - Md phdng qua trinh khai thac md cho Idp... dd vd dupc tao sau khai thac ldp dau tien Do cao cue dai cua vung pha hda cao da dupc ghi lai la d diem khoang 85m tfnh tu gUdng IP chp tham sd 2b, ddng thdi day la gidi han khai thac ldp than