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Microseismological criteria for assessment of the hazard of rock bursts in mines (in Polish)
88A
794109 POSSIBLE ROCKBURST PREVENTION IN THE RUHR WITH PARTICULAR RE~'a~IENCE TO RELIEF BLASTING (IN
Gram@a) Br~, G Nobel Hefte, V44, N3, July-Sept 1978, P91-97 Test boreholes were drilled after relief blasting to measure the r ~ m ~ ning stresses. Rock mechanical aspects of relief blasting are discussed. 794110 RECENT EXPERIENCE WITH RELIEF BLASTING AT RAD-
BOO C O U ~ m Y
(IN Gm~AN)
Heisimg, C; Von Velsen-Zerweck, R Nobel Hefte, V4/~, N3, July-Sept 1978, P104-113 794111 MICROSEI~4OLOGICAL C R I ~ I A FOR ASSESSMENT OF THE HAZARD OF ROCK BURSTS IN MINEs (IN PALISH) Wierzchowska, Z Przegl Gorn, V34, N9, Sept 1978, P393-397 The relation between rock bursts ar~ shocks is discussed, and the geological and mining conditions which have imlx~rtant effects on the stress in rock masses and on its variation in time and space are determined. General criteria for assessing the risk are suggested. 794112 PRELIMINARY RESULTS OF TESTS ON THE EXPERIMENTAL USE OF HIGH-PRESSURE WATER INFUSION IN COAL FOR REDUCTION OF OUTBURST HAZARDS AT VICTORIA COAL MINE (IN POLISH) Kowacki, B Przegl Gorn, V34, NS, May 1978, P197-200 794113 DISTRIBUTION OF V~VfICAL STRESSES IN A LONGWALL AS A FUNCTION OF LONGWALL POSITION RELATIVE TO A P ~ T A R IN AN OVERLYI~ SEAM (IN POU ~ ) Labanowicz, H Prace GlowDmgo Inst Gorn, Komunikat N685, 1977, 10P Reports observations made of variations in loads on mechamlsed supports and in seam loadi~g, as well as observations of lowering of the i~nedlate roof, as functions of the longwall face position relative to the safety pillar. The stress distribution beneath the pillar is Gaussian, and its maximum occurs under the centre of t h e pillar. 794114 SEISMIC METHOD FOR DETERMINATION OF THE INFLUENCE OF EXTRACTION BOUNDARIES ON THE STATE OF STRESS IN THE ROCK BODY (IN POLISH) Dubinski, J; Weirzchowska, Z Prace Glownego Inst Gorn, Komunikat N676, 1977, 28P 794]/5 PROBLEM OF TANGENTIAL LOADING ON A SHAFT LINING EXAMINED BY ANALYSIS OF AN ELASTIC MODEL OF THE SHAFT OPENING AND LINING RINGS (IN POLl SH ) Wichur, A Gornictwo, V2, NI, 1978, P15-36 Tangential loading on a shaft lining was noted in in situ measurements. The author derives solutions for full contact and for partial contact between the edge of the opening and the lining ring, when the shaft pillar is undisturbed. The loads which occur in practice are discussed.
794116 GAS AND COAL OUTBURSTS AS A FUNCTION OF SEAM CHARAcI'~IS~ICS QIN RUSSIAN) O~x)pchuk, B N Ugol, N3, March 1978, P22-25 Presents a mathematical analysis of the effect of various parameters. 794117 I M P R O V ~ N r OF THE STRESS DISTRIBUTION AND ROOF SUPPORT POSSIBILITIES IN LARGE UNDERGROUND OPENINGS BY MEANS OF AUXILIARY T U N ~ S ~_ltzen, A M Proc ist International Symposium on Storage in Excavated Rock Caverns (ROckstore 77), Stockholm, 5-8 sept 1977, V2, P329-332. Publ Oxford: Pergamon Press, 1978 Introduces the idea of reducing the tension zones in the roof of a large span opening by driving auxiliary tunnels above the roof. The concept is examined using photoelastic models. 794118 SENSITIVITY TO EXPECTED RANGES OF ROCK STRENGTHS AND STRESS F]~W.DS, OF STRESS ANALYSES OF UNDERGROUND CAVERNS Stewart, R D; Bamford, W E Proc ist International Symposium on Storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 1977, V2, P349-354. Publ Oxford: Pergamon Press, 1978 Presents a finite element method for assessing the stability of ttndergroumd caverns. The preliminary design of a power plant is given as illustration of the technique. 794119 TRANSPORT AND STORAGE OF HEATED WATER IN UNLINED ROCK 0PENISES BJttrstrom, S Proc 1st International Symposium on Storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 1977, V2, P433-kk0. Ptlbl Oxford: Pergamon Press, 1978 Reports theoretical analyses of the temperature ar~ stress distribution in rock around cavities filled with hot water, and compares these results with those of field tests. 794120 STABILITY OF HEATED CAVERNS IN A HIGH HORIZONTAL SEREsS FIELD Lee, C F] Klym, T W Proc ist International Symposium on storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 sept 1977, V2, P441-~48. Publ Oxford: Pergamon Press, 1978 Considers the residual stresses and tlme-dependent deformations affecting tunnels and caverns in the Silurian, Ordovlcian and Precambrlan rocks of Ontario, Canada. Thermal stress caused by storage of hot fluids in such caverns is also discussed. 79~121 ~ N C T S OF PRESSURE AND T ~ CHANGES IN A COMPRESSED AIR STORAGE CAVERN Hcwells, D A Proc 1st I,fcernational Symposium on storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 19T7, V2, P481-486. Publ Oxford: Pergamon Press, 1978 Discusses stress state and rock properties at the start of operating a storage cavern for
794109 POSSIBLE ROCKBURST PREVENTION IN THE RUHR WITH PARTICULAR RE~'a~IENCE TO RELIEF BLASTING (IN
Gram@a) Br~, G Nobel Hefte, V44, N3, July-Sept 1978, P91-97 Test boreholes were drilled after relief blasting to measure the r ~ m ~ ning stresses. Rock mechanical aspects of relief blasting are discussed. 794110 RECENT EXPERIENCE WITH RELIEF BLASTING AT RAD-
BOO C O U ~ m Y
(IN Gm~AN)
Heisimg, C; Von Velsen-Zerweck, R Nobel Hefte, V4/~, N3, July-Sept 1978, P104-113 794111 MICROSEI~4OLOGICAL C R I ~ I A FOR ASSESSMENT OF THE HAZARD OF ROCK BURSTS IN MINEs (IN PALISH) Wierzchowska, Z Przegl Gorn, V34, N9, Sept 1978, P393-397 The relation between rock bursts ar~ shocks is discussed, and the geological and mining conditions which have imlx~rtant effects on the stress in rock masses and on its variation in time and space are determined. General criteria for assessing the risk are suggested. 794112 PRELIMINARY RESULTS OF TESTS ON THE EXPERIMENTAL USE OF HIGH-PRESSURE WATER INFUSION IN COAL FOR REDUCTION OF OUTBURST HAZARDS AT VICTORIA COAL MINE (IN POLISH) Kowacki, B Przegl Gorn, V34, NS, May 1978, P197-200 794113 DISTRIBUTION OF V~VfICAL STRESSES IN A LONGWALL AS A FUNCTION OF LONGWALL POSITION RELATIVE TO A P ~ T A R IN AN OVERLYI~ SEAM (IN POU ~ ) Labanowicz, H Prace GlowDmgo Inst Gorn, Komunikat N685, 1977, 10P Reports observations made of variations in loads on mechamlsed supports and in seam loadi~g, as well as observations of lowering of the i~nedlate roof, as functions of the longwall face position relative to the safety pillar. The stress distribution beneath the pillar is Gaussian, and its maximum occurs under the centre of t h e pillar. 794114 SEISMIC METHOD FOR DETERMINATION OF THE INFLUENCE OF EXTRACTION BOUNDARIES ON THE STATE OF STRESS IN THE ROCK BODY (IN POLISH) Dubinski, J; Weirzchowska, Z Prace Glownego Inst Gorn, Komunikat N676, 1977, 28P 794]/5 PROBLEM OF TANGENTIAL LOADING ON A SHAFT LINING EXAMINED BY ANALYSIS OF AN ELASTIC MODEL OF THE SHAFT OPENING AND LINING RINGS (IN POLl SH ) Wichur, A Gornictwo, V2, NI, 1978, P15-36 Tangential loading on a shaft lining was noted in in situ measurements. The author derives solutions for full contact and for partial contact between the edge of the opening and the lining ring, when the shaft pillar is undisturbed. The loads which occur in practice are discussed.
794116 GAS AND COAL OUTBURSTS AS A FUNCTION OF SEAM CHARAcI'~IS~ICS QIN RUSSIAN) O~x)pchuk, B N Ugol, N3, March 1978, P22-25 Presents a mathematical analysis of the effect of various parameters. 794117 I M P R O V ~ N r OF THE STRESS DISTRIBUTION AND ROOF SUPPORT POSSIBILITIES IN LARGE UNDERGROUND OPENINGS BY MEANS OF AUXILIARY T U N ~ S ~_ltzen, A M Proc ist International Symposium on Storage in Excavated Rock Caverns (ROckstore 77), Stockholm, 5-8 sept 1977, V2, P329-332. Publ Oxford: Pergamon Press, 1978 Introduces the idea of reducing the tension zones in the roof of a large span opening by driving auxiliary tunnels above the roof. The concept is examined using photoelastic models. 794118 SENSITIVITY TO EXPECTED RANGES OF ROCK STRENGTHS AND STRESS F]~W.DS, OF STRESS ANALYSES OF UNDERGROUND CAVERNS Stewart, R D; Bamford, W E Proc ist International Symposium on Storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 1977, V2, P349-354. Publ Oxford: Pergamon Press, 1978 Presents a finite element method for assessing the stability of ttndergroumd caverns. The preliminary design of a power plant is given as illustration of the technique. 794119 TRANSPORT AND STORAGE OF HEATED WATER IN UNLINED ROCK 0PENISES BJttrstrom, S Proc 1st International Symposium on Storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 1977, V2, P433-kk0. Ptlbl Oxford: Pergamon Press, 1978 Reports theoretical analyses of the temperature ar~ stress distribution in rock around cavities filled with hot water, and compares these results with those of field tests. 794120 STABILITY OF HEATED CAVERNS IN A HIGH HORIZONTAL SEREsS FIELD Lee, C F] Klym, T W Proc ist International Symposium on storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 sept 1977, V2, P441-~48. Publ Oxford: Pergamon Press, 1978 Considers the residual stresses and tlme-dependent deformations affecting tunnels and caverns in the Silurian, Ordovlcian and Precambrlan rocks of Ontario, Canada. Thermal stress caused by storage of hot fluids in such caverns is also discussed. 79~121 ~ N C T S OF PRESSURE AND T ~ CHANGES IN A COMPRESSED AIR STORAGE CAVERN Hcwells, D A Proc 1st I,fcernational Symposium on storage in Excavated Rock Caverns (Rockstore 77), Stockholm, 5-8 Sept 19T7, V2, P481-486. Publ Oxford: Pergamon Press, 1978 Discusses stress state and rock properties at the start of operating a storage cavern for