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Carrying capacity of arch-shaped supports of steel, concrete and prefabricated reinforced concrete elements. In German. 2F, 2T, 4R
]&hA
Temporary and permanent supports
Influence of dynamic loads due to explosions
See also abstract: 1422. 1528 ~2JL~KOV,G I The stress distribution in the abutment pressure zone according to the results of field measurements. 4F. SOC.MIN. SC I .VI0,N2,1974, P231- 233 •
or earthquakes
1429 ZHIZLOV,NI SMACHNOI, NI AKSENOV,VK Experimental assessment of stresses in a coal seam with roof control by support on chocks and stowage. IF,2R. SOV .MIN .SCI .VI0,N2,1974, P234- 236 . 1430 LIPKOVICH, SM DONETSK POLYTECH. INST. SU ANDR IENKO,VM DONETSK POLYTECH. INST. SU Deternd/%ation of parameters for driving drifts crosswise into the worked-out area.3F,iT,3R. SOV.MIN.SCI .VI0,NI,1974,P20-23. Optirm/m position for ventilation drifts in a horizontal coal seam deposit is determined from empirical relations obtained by processing field observations of rock displacement. From statistical processing close correlation has been found between rock displacement snd the distance to the working face. 1431 LUTGENDORF, HO Carrying capacity of arch-shaped supports of steel, concrete and prefabricated reinforced concrete elements. In Gern~n .2F,2T, 4R. GLUCKAUF- FORSCKEFTE, V36, NI, FEB .1975,P7-II. 1432 SOW~S,GF lAW ENGNG TEST.CO.ATLANTA,USA Evaluation of bulkhead and excavation bracing failures .1OF,3R. GROUND ENGNG, V8, N4, JULY, 1975, P!9- 26.
Construction methods
1436 ERMOLAEV, AM IPK,MIN. COAL I N D . K ~ O V 0 , SU Caving of roof rocks during working of gently sloping coal seams with mechanized 0MKTM systems. 3F. SOV.MIN. SCI.,V10, N1,1975, P93- 96.
Experimental and numerical techniques 1437 MURPHY,DJ
J.S.WARD ASSOC.SAN FRANCISCO,USA
CLOUGH, GW woOLWORTH,RS
STANFORD UNIV. CALIF.USA J.S.WARD ASSOC.SAN FRANCISCO,USA
Temporary excavations in varved cl8~.ISF,IT,21B. J .GEOTECH. ~NGNG DIV .ASCE,V101, GT3,M~B .1975,F279- 295. The benefits to be obtained from finite element mode111ng, as opposed to empirical means for predicting displacements are discussed. 1438 SKUBA,VN Studying the stability of mining excavations in permafrost.Textbook.In Russian.Ref s. NOVOSIBIRSK,NAUKA, 1974, lISP. 1439 PALMER, JH UNIV. W .ONT.LONDON, CDN Errors in simulating excavations in elastic media by finite elements. Discussion of paper by J.T.Christian and I.H.Wong, Soils and Foundations,V.13,N.1, 1973.2F, 2T. soILS FOUND .V14,N2, JT/NE,1974, P109-111. 1440 SHADR IN,AG KUZMIN,VI Calculation of rock displacement during working of stratified ore deposits .2F,3R. SOV. MIN. SC I.Vl0, N2,1975, P149-153.
Surface structures
See also abstracts: 1349,1350,1352. 1533 GORBATK IN, Bi Special shaft-sinking techniques for tunnellers. Textbook. In Russlan.15R. MOSCOW, NEDRA. 1974,216 P. 1434 GRIEVES,M Shaft-sit,king at Boulby mine. 3F . TUNN.TL%INLG,V7,N4, JULY, 1975, P32-34.
Groundwater problems 1535 LANCASTER -JONES, FF Problems of shsft-sinklng.2F,4R. TUNN TUNNLG, VT,N5, JULY, 1975, P26- 28. Shaft-slnking is coasted to tunnelling and the problems posed by water and methods used for dealing with them are briefly discussed. Methods of dealing with weak rock are also considered. The geology of the Rand and O.F.S. goldfields is described and methods used in these areas for shaft-sinking are considered in detail. Two examples of water problems are given. One at Freddies North Shaft, O.F.S. (1950) and the other at West Driefonteln (1966).
1441 HEI~fIARATCH I,DR UNIV. NEWCASTLE- UPON. T Y ~ , GB REEC E,AR Boundary wedges in two-dlmensional passive soll failure.15,2T, 15R. GEOTECHN, V25, N2,1975, P197-220. Conventional earth pressure analyses using a rigid-plastic Mohr-Coulomb soil model often give poor predictions of sllp line fields and passive resistance. It is argued that assumptions that all the soll within the rupture boundary is deforming and that the loading boundary stresses are fully mobilized are rarely realized, and that zones of dead soll develop. A method of predicting the formation of these boundary wedges s~ad their influence on interface stress conditions is presented. A celculation procedure laser on the basic Sokolovski solution and using dimensionless coefficients is given. 1452 BRAWN]~, CO PENTZ, DL CAMPBELL, DB Ground stability in surface coal m~les.22F,13R. MIN. CONGR. J.V61, N6, JUNE, 1975, P42 - 53. Potential problems, investigational requirements, stab ility evaluation requirements and construction control
Temporary and permanent supports
Influence of dynamic loads due to explosions
See also abstract: 1422. 1528 ~2JL~KOV,G I The stress distribution in the abutment pressure zone according to the results of field measurements. 4F. SOC.MIN. SC I .VI0,N2,1974, P231- 233 •
or earthquakes
1429 ZHIZLOV,NI SMACHNOI, NI AKSENOV,VK Experimental assessment of stresses in a coal seam with roof control by support on chocks and stowage. IF,2R. SOV .MIN .SCI .VI0,N2,1974, P234- 236 . 1430 LIPKOVICH, SM DONETSK POLYTECH. INST. SU ANDR IENKO,VM DONETSK POLYTECH. INST. SU Deternd/%ation of parameters for driving drifts crosswise into the worked-out area.3F,iT,3R. SOV.MIN.SCI .VI0,NI,1974,P20-23. Optirm/m position for ventilation drifts in a horizontal coal seam deposit is determined from empirical relations obtained by processing field observations of rock displacement. From statistical processing close correlation has been found between rock displacement snd the distance to the working face. 1431 LUTGENDORF, HO Carrying capacity of arch-shaped supports of steel, concrete and prefabricated reinforced concrete elements. In Gern~n .2F,2T, 4R. GLUCKAUF- FORSCKEFTE, V36, NI, FEB .1975,P7-II. 1432 SOW~S,GF lAW ENGNG TEST.CO.ATLANTA,USA Evaluation of bulkhead and excavation bracing failures .1OF,3R. GROUND ENGNG, V8, N4, JULY, 1975, P!9- 26.
Construction methods
1436 ERMOLAEV, AM IPK,MIN. COAL I N D . K ~ O V 0 , SU Caving of roof rocks during working of gently sloping coal seams with mechanized 0MKTM systems. 3F. SOV.MIN. SCI.,V10, N1,1975, P93- 96.
Experimental and numerical techniques 1437 MURPHY,DJ
J.S.WARD ASSOC.SAN FRANCISCO,USA
CLOUGH, GW woOLWORTH,RS
STANFORD UNIV. CALIF.USA J.S.WARD ASSOC.SAN FRANCISCO,USA
Temporary excavations in varved cl8~.ISF,IT,21B. J .GEOTECH. ~NGNG DIV .ASCE,V101, GT3,M~B .1975,F279- 295. The benefits to be obtained from finite element mode111ng, as opposed to empirical means for predicting displacements are discussed. 1438 SKUBA,VN Studying the stability of mining excavations in permafrost.Textbook.In Russian.Ref s. NOVOSIBIRSK,NAUKA, 1974, lISP. 1439 PALMER, JH UNIV. W .ONT.LONDON, CDN Errors in simulating excavations in elastic media by finite elements. Discussion of paper by J.T.Christian and I.H.Wong, Soils and Foundations,V.13,N.1, 1973.2F, 2T. soILS FOUND .V14,N2, JT/NE,1974, P109-111. 1440 SHADR IN,AG KUZMIN,VI Calculation of rock displacement during working of stratified ore deposits .2F,3R. SOV. MIN. SC I.Vl0, N2,1975, P149-153.
Surface structures
See also abstracts: 1349,1350,1352. 1533 GORBATK IN, Bi Special shaft-sinking techniques for tunnellers. Textbook. In Russlan.15R. MOSCOW, NEDRA. 1974,216 P. 1434 GRIEVES,M Shaft-sit,king at Boulby mine. 3F . TUNN.TL%INLG,V7,N4, JULY, 1975, P32-34.
Groundwater problems 1535 LANCASTER -JONES, FF Problems of shsft-sinklng.2F,4R. TUNN TUNNLG, VT,N5, JULY, 1975, P26- 28. Shaft-slnking is coasted to tunnelling and the problems posed by water and methods used for dealing with them are briefly discussed. Methods of dealing with weak rock are also considered. The geology of the Rand and O.F.S. goldfields is described and methods used in these areas for shaft-sinking are considered in detail. Two examples of water problems are given. One at Freddies North Shaft, O.F.S. (1950) and the other at West Driefonteln (1966).
1441 HEI~fIARATCH I,DR UNIV. NEWCASTLE- UPON. T Y ~ , GB REEC E,AR Boundary wedges in two-dlmensional passive soll failure.15,2T, 15R. GEOTECHN, V25, N2,1975, P197-220. Conventional earth pressure analyses using a rigid-plastic Mohr-Coulomb soil model often give poor predictions of sllp line fields and passive resistance. It is argued that assumptions that all the soll within the rupture boundary is deforming and that the loading boundary stresses are fully mobilized are rarely realized, and that zones of dead soll develop. A method of predicting the formation of these boundary wedges s~ad their influence on interface stress conditions is presented. A celculation procedure laser on the basic Sokolovski solution and using dimensionless coefficients is given. 1452 BRAWN]~, CO PENTZ, DL CAMPBELL, DB Ground stability in surface coal m~les.22F,13R. MIN. CONGR. J.V61, N6, JUNE, 1975, P42 - 53. Potential problems, investigational requirements, stab ility evaluation requirements and construction control