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Stress analysis in underground extraction of steeply dipping thick coal seams
72A
l=rocessi~ ani prese~atlon, the material (coal), the sampling procedure, the sample ~epar~.tlon, ar~ %he instrtuuentation of %hls neturally discontinuous m ~ u m . A comparlson of the applied loa~ng hlstcry with the loading hJstary actually encour.tered in tunnelling is presented. (For part 2 see i t e m 81~0c~4). 8 1 ~ 0 ~ TIME-DEPENDENT D~FOP/~ATICN OF ~vJJl TUNNELS - 2. TYPICAL TEST DATA Kaiser, P K; Morgemstern, N R Int J Rock Mech MAn Sci, Vl8, N2, April 1981, Pi~I-152 For part I see item 81~093. Part 2 d~scusses the time-dcpenlent processes, such as failure propagation ar~ associated stress redistribution. Both the time-indepenient and time-deper~ent tummel c o n v e r g e n c e and radial strain pattern inside the rock mass 8re presented in plots of fle~d stress, strain ca" tunnel closure with tim~, and strain rate or turmel closure rate. The performance of the tu~mel in the pre-failure stress ram@e, during the transition to an ur.stable opening a:~ after a yield zone has developed is evaluated. SELECTIVE-CUT ROADHEADING MACHII~E.$ WITH LCNGITUEINAL AND TRANSV~SE CUTTING E~'ADS (IN C..ER~3N A~D ENGLISH ) Mer~el, W; ~re~o, P Gluckauf, Vll7, NS, 5 March 1981, P28~-287 (English version P122-12~)
also stress relief by drilllrg, by shotfirl~g aml by lm"uslon, an~ t h e m o n i t a r l r g o f t h e effectiveness of these measures. (Paper origlnelly presented at a training semlnsr).
814099 F D : © ~ , ~ A L ~ D Y OF ROOF FALl S (IN JAPANESE) Okamura, H J MI~ Metsll Inst Japan, V95, N1097, July 1979, P387-392, 410 Reports centrifuge tests on mole_l~.. 81~i00 CRITERIA FOR CHOICE OF CROSS-SECTION OF DEVE~}PM/~ WORKINGS IN HARD COAL M I ~ S (IN Gla no~-ski, M Gcrnlctwa (Stanislava Staszica), V~, Hl, i~0,
~-23 Analyses stresses arour.d semAclrcular and rectangttlar openings ard draws cc:~lusions regarding support stability. 81~i01 DETEP~INATION OF THE INFLUENCE OF THE EEGE OF AN ABANDO~FD WOP~:IRO 0N OVERLYING AND ~ ¥ I N 0 SEAMS USING ELEt~ICAL ~ESISTAECE MEASUPJ~4EN~S
(IN POLLS}{) Czeka4, A; Jamk~rskl, S Wiad Gcrm, V30, Nil, 1979, P319-322 81~102 SOLUTION OF TRE FRO~LE~" OF ROCS( BL~fPS IN THE O$~q~AVA-KARVINA BASIN (IN CZECH) Nevlud, J; Ta/da, G Uh:i, V28, NT, July 1980, P291-292
Discusses maimly operatio:~l aspects. 81M096 MAC~i~NE DRXVAGES IN THE CO;L MINES OF THE USSR
(IN G Z ~
AND ~ n z s ~ )
Mallowsnow, D I Gl~cka~f, VllT, N~, 19 Feb i~i, P?.ll-215
( E ~ I s h version
~9~-9S)
Gives details of the speciflcatlor~ of selective rosdhesders smd discusses thelr use in USSR coal m~Des. Briefly mentions full face machines. Also discusses increasing the Outyut of drivages, arts use of bolts as roadway support.
in-situ stresses and stress around underground openings 8~0~7 ROCK FRESSUP~ ~T DEeP LEVELS: MARGINS OF CONTROL (IN G ~ A N A~, ENGLISH) Kuschel, K H Gluckauf, VllT, N3, 5 ~eb 1981, pl~d$-153 (English version P63-67)
Discusses o;eratlor~ and support requirements at Ibbenburen Colliery, West Germ~r~, where work~mgs have now reached a depth c£ l~00m. (Paper orlginally presented at a tralnlrg semi r~r ).
824o95 D~TECTING AND COMBA~IN~ ~ : PmZ~DS OF ROCK BURSTS (IN G E a r AND ENGLISH) Plats, M Gluckauf, VI3 7, N3, 5 Feb i~81, P153-156
(Er~llsh version ~68-71) Discusses the ~henom.er~ of rock and gas b ~ s t s in coal mines and the following mo~dtorir E tech.niques: te.~t drilling, seismoacoustlcs, pressure s~d. length measurement of standing walls, borehole probir~ of stsmd.i~ walls. Discusses
Reglorml rock bump forecs.s%ing is based m a i r ~ on the estim~tlcn of the llhyslcomechsnlcsl ~or~rties of coal and the a c c o m p a ~ n g rocks. Local forecastir~ is b~sed on drilling tests a ~ seismic tests where possible. Main methols of prevention are destresslng boreholes, shotfir/rg and seem i~fuslcn. 814103 METHOD OF PR.EDICTI~O OU~JRhTS IN CERTAIN PARTS OF A ROCK MASS (IN BUSSIAN) Vinokur, B S; Syselyatin, F V Fiz-Tekh Frobl Razrab Polezn Iskop~ N:, JanFeb 1980, PI19-123 D e s c r i b e s a method b a s e d o n d e t e r m i n i n g t h e reststamce to penetration by a point in the walls of a 45mm d i a m e t e r h o l e .
81~I0~ STRESS ANALYSIS IN UNDERGROUND KXTRAC~ION OF STEEPLY DIPPING ~ I C K COAL SEAMS Jeremic, M L; Lutley, ,q J Proc 21st US Symposium on Rock Mechanics, Rolls, Missouri, 28-30 May 1980, P35-~3 Reports on a two dimensional finite element method for analysis Of stress distribution and deformation. The results are validated by comparison with actual mining operations.
Temporary and permanent supports 81~i05 EFFECfIVE FILLING OF THE VOID BETWEEN GROUND A.~D CIRCULAR .MINE RO.a/YgAYREINFORC~.4ENT OF CONCR%TE ~ E ~ T S (IN FRENCH AND .~.m~ISH) Van Duyse, H Ann Mines Belg, NS, May 1980, I~83-50~
l=rocessi~ ani prese~atlon, the material (coal), the sampling procedure, the sample ~epar~.tlon, ar~ %he instrtuuentation of %hls neturally discontinuous m ~ u m . A comparlson of the applied loa~ng hlstcry with the loading hJstary actually encour.tered in tunnelling is presented. (For part 2 see i t e m 81~0c~4). 8 1 ~ 0 ~ TIME-DEPENDENT D~FOP/~ATICN OF ~vJJl TUNNELS - 2. TYPICAL TEST DATA Kaiser, P K; Morgemstern, N R Int J Rock Mech MAn Sci, Vl8, N2, April 1981, Pi~I-152 For part I see item 81~093. Part 2 d~scusses the time-dcpenlent processes, such as failure propagation ar~ associated stress redistribution. Both the time-indepenient and time-deper~ent tummel c o n v e r g e n c e and radial strain pattern inside the rock mass 8re presented in plots of fle~d stress, strain ca" tunnel closure with tim~, and strain rate or turmel closure rate. The performance of the tu~mel in the pre-failure stress ram@e, during the transition to an ur.stable opening a:~ after a yield zone has developed is evaluated. SELECTIVE-CUT ROADHEADING MACHII~E.$ WITH LCNGITUEINAL AND TRANSV~SE CUTTING E~'ADS (IN C..ER~3N A~D ENGLISH ) Mer~el, W; ~re~o, P Gluckauf, Vll7, NS, 5 March 1981, P28~-287 (English version P122-12~)
also stress relief by drilllrg, by shotfirl~g aml by lm"uslon, an~ t h e m o n i t a r l r g o f t h e effectiveness of these measures. (Paper origlnelly presented at a training semlnsr).
814099 F D : © ~ , ~ A L ~ D Y OF ROOF FALl S (IN JAPANESE) Okamura, H J MI~ Metsll Inst Japan, V95, N1097, July 1979, P387-392, 410 Reports centrifuge tests on mole_l~.. 81~i00 CRITERIA FOR CHOICE OF CROSS-SECTION OF DEVE~}PM/~ WORKINGS IN HARD COAL M I ~ S (IN Gla no~-ski, M Gcrnlctwa (Stanislava Staszica), V~, Hl, i~0,
~-23 Analyses stresses arour.d semAclrcular and rectangttlar openings ard draws cc:~lusions regarding support stability. 81~i01 DETEP~INATION OF THE INFLUENCE OF THE EEGE OF AN ABANDO~FD WOP~:IRO 0N OVERLYING AND ~ ¥ I N 0 SEAMS USING ELEt~ICAL ~ESISTAECE MEASUPJ~4EN~S
(IN POLLS}{) Czeka4, A; Jamk~rskl, S Wiad Gcrm, V30, Nil, 1979, P319-322 81~102 SOLUTION OF TRE FRO~LE~" OF ROCS( BL~fPS IN THE O$~q~AVA-KARVINA BASIN (IN CZECH) Nevlud, J; Ta/da, G Uh:i, V28, NT, July 1980, P291-292
Discusses maimly operatio:~l aspects. 81M096 MAC~i~NE DRXVAGES IN THE CO;L MINES OF THE USSR
(IN G Z ~
AND ~ n z s ~ )
Mallowsnow, D I Gl~cka~f, VllT, N~, 19 Feb i~i, P?.ll-215
( E ~ I s h version
~9~-9S)
Gives details of the speciflcatlor~ of selective rosdhesders smd discusses thelr use in USSR coal m~Des. Briefly mentions full face machines. Also discusses increasing the Outyut of drivages, arts use of bolts as roadway support.
in-situ stresses and stress around underground openings 8~0~7 ROCK FRESSUP~ ~T DEeP LEVELS: MARGINS OF CONTROL (IN G ~ A N A~, ENGLISH) Kuschel, K H Gluckauf, VllT, N3, 5 ~eb 1981, pl~d$-153 (English version P63-67)
Discusses o;eratlor~ and support requirements at Ibbenburen Colliery, West Germ~r~, where work~mgs have now reached a depth c£ l~00m. (Paper orlginally presented at a tralnlrg semi r~r ).
824o95 D~TECTING AND COMBA~IN~ ~ : PmZ~DS OF ROCK BURSTS (IN G E a r AND ENGLISH) Plats, M Gluckauf, VI3 7, N3, 5 Feb i~81, P153-156
(Er~llsh version ~68-71) Discusses the ~henom.er~ of rock and gas b ~ s t s in coal mines and the following mo~dtorir E tech.niques: te.~t drilling, seismoacoustlcs, pressure s~d. length measurement of standing walls, borehole probir~ of stsmd.i~ walls. Discusses
Reglorml rock bump forecs.s%ing is based m a i r ~ on the estim~tlcn of the llhyslcomechsnlcsl ~or~rties of coal and the a c c o m p a ~ n g rocks. Local forecastir~ is b~sed on drilling tests a ~ seismic tests where possible. Main methols of prevention are destresslng boreholes, shotfir/rg and seem i~fuslcn. 814103 METHOD OF PR.EDICTI~O OU~JRhTS IN CERTAIN PARTS OF A ROCK MASS (IN BUSSIAN) Vinokur, B S; Syselyatin, F V Fiz-Tekh Frobl Razrab Polezn Iskop~ N:, JanFeb 1980, PI19-123 D e s c r i b e s a method b a s e d o n d e t e r m i n i n g t h e reststamce to penetration by a point in the walls of a 45mm d i a m e t e r h o l e .
81~I0~ STRESS ANALYSIS IN UNDERGROUND KXTRAC~ION OF STEEPLY DIPPING ~ I C K COAL SEAMS Jeremic, M L; Lutley, ,q J Proc 21st US Symposium on Rock Mechanics, Rolls, Missouri, 28-30 May 1980, P35-~3 Reports on a two dimensional finite element method for analysis Of stress distribution and deformation. The results are validated by comparison with actual mining operations.
Temporary and permanent supports 81~i05 EFFECfIVE FILLING OF THE VOID BETWEEN GROUND A.~D CIRCULAR .MINE RO.a/YgAYREINFORC~.4ENT OF CONCR%TE ~ E ~ T S (IN FRENCH AND .~.m~ISH) Van Duyse, H Ann Mines Belg, NS, May 1980, I~83-50~