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Interaction between two parallel tunnels
79A
Underground Excavations 784079 V ~ C A L EARTH PRESSURE ON A PIPE IN THE GROUND YoshiMomhl, W Soils Found, VI6, N2, June 1976, P31-41 Reports lab tests in which sar~ s ~ r ~ l i r ~ a pipe is forced to settle~ vertical p r e s ~ e on the pipe is measured and slide lines are shown by x-ray photogral~y, and the problem is discussed in relation to the Marston-Spar~ler theory. 78~080 INFLUENCE OF GROUND CONDITIONS ON THE PERFORMANCE OF UNDerGROUND PIPELINES DURING SEISMIC A C T M T Y (IN EUSSIAN) Gekhman~ A S; Spiridonov, V V; Figarov, N G Stroit Truboprov, N6, June 1977, PI3-1~ 784081 IMFROVED SPECIAL TECHNIQUESIN SUBWAY CONSTRUCTION (IN RUSSIAN)
I)o~mn, I A Transp Stroit, ~8, Aug 1976, P12-14 784082 FINITE ELEMENT ANALYSIS OF A LARGE DIAMETER STEEL PIPELINE Nath, P Transport and Road Research Lab lab report 778, 1977 Gives details of the analysis of a 1.8m diameter buried pipe structure on which a full scale experiment was conducted in 1971. Compares the ~ ! y t i c a l amd experimental results and gives a method for estimating the influence of backfill compaction on the measured results.
784083 R~ELIMINARY EVALUATION OF STRUCTURAL AND GROUNDWATER CONDITIONS IN UND~GROUND MINES AND EXCAVATIONS Raven, K G Canada: Geological Survey, paper 77-1A, 1977, P3~42
Mines 784o84 SAFETY OF ABANDONED UNDERGROUND QUARRIES IN THE NORD-PAS DE CALAIS AREA (IN FRENCH) Delbeeq~ J M Industrie Minerale, %"39, N3, March 1977, PZ29-146 784085 EXAMINATION OF THE P H E N ~ N O N OF DEFORMATION AND SPAZ~NG OF ~ m COAL FACE IN SOME WC~KINGS IN THE TATABANYA COAL FIELD (IN GERMAN) Hullan, J PUbl Hung Min Res Inst, NIg, 1976, P65-91 Describes the progress of forward movement and spalling at 3 faces in the Tatabamya brown coalfield, with a proposal for reducing it6 784086 RELATION OF GEOLOGY TO STRESS CHANGES CAUSED BY UNDERGROUND EXCAVATION IN CRYSTALLINE ROCKS AT IDAHO SPRINGS, COLORADO L e t F T; Abel, J F; Nichols, T C U S Geological Survey, prof paper N965, 1976,
4~
Repc~ts a study of the effects of geology amd
rock stresses on mining in complexly deformed anisotropic metaseddmentary rocks usirg thecre tical, laboratory and field irmmstigations.
Tunnels See also: 784125 784087 ON THE TIME-DEPENDENT EFFECTS IN ADVANCING TUNNELS Ghaboussi~ J; Gioda, G Int J N%~n Anal Meth Geomeeh, Vl, N3, July-Se 1977, P249-269 A finite element study is presented of the short-term effects that devlop when a tunnel i driven in a grourd showing viscous behaviour associated with the devlatcric deformations. Axisy~netric conditions around the tunnel cent: line are assumed and the process of excavation is simulated by means of a step-by-step time incremental technique. The Kelvin's model is used to approximate the medium creep behaviour and a simple procedure is presented that allow the determination of the creep model constants from the laboratory test data. Various rates o advancing, the presence of an unsupported zone close to the tunnel face and the temporary interruption of the excavation process are considered. For the viscous model and the analytical technique used, simple, approximate relationships are presented for the displaceme: around the tunnel and overexcavation volume as functions of the rate of excavation advance Auth.
784o88 I~TERACTION ~EYWEEN TWO PARAIIEL TUNNELS Ghabou~si, J; Ranken, R E Int J Num Anal Meth Geomech, Vl, NI, Jan-Msr 1977, P75-103 A series of finite element analyses ware performed to study the behaviour of a system of two parallel and adjacent tunnels. Various sequences of excavation of the two tunnels and installation of tunnel liners have been simulated in the analyses. Influence of various parameters on the behaviour of the two parallel tunnels has been investigated. The important parameters considered in this study are: the width of the pillar separating the two tunnels; the tunnel depth; support conditior~ sequence of excavation; and, to sc~e extent, the izflue, of plastic yielding in the medium surrounding two tunnels. The investigation was restricted to 2-dlmensional plane-strain analyses. 784089 EVALUATION OF FUNCTION OF PASSIVE LOAD FOR TUNNEL LINING Chou, T Soils Found, VlT, N1, March 1977, P13-21 Gives a numerical method of ar~lysis of the tunnel lining taking into account p~f:sive !o~s Discusses characteristics of passive loads associated with magnitude ~r~ shape of active los thickr~ss of the llnir~ and voids betuveen +~ae lini~g and the s~rroundimg rock. 784o9o ROCK PROPEN~ZES AND ~CHANTCAL ~ Y V I N G (IN ~A~) Habenicht, H; Gehrimg, K Berg Huttenm s Mh s VI21, NI2, Dec 1976, P5O6-514 The selection of equipment for roadway, face,
Underground Excavations 784079 V ~ C A L EARTH PRESSURE ON A PIPE IN THE GROUND YoshiMomhl, W Soils Found, VI6, N2, June 1976, P31-41 Reports lab tests in which sar~ s ~ r ~ l i r ~ a pipe is forced to settle~ vertical p r e s ~ e on the pipe is measured and slide lines are shown by x-ray photogral~y, and the problem is discussed in relation to the Marston-Spar~ler theory. 78~080 INFLUENCE OF GROUND CONDITIONS ON THE PERFORMANCE OF UNDerGROUND PIPELINES DURING SEISMIC A C T M T Y (IN EUSSIAN) Gekhman~ A S; Spiridonov, V V; Figarov, N G Stroit Truboprov, N6, June 1977, PI3-1~ 784081 IMFROVED SPECIAL TECHNIQUESIN SUBWAY CONSTRUCTION (IN RUSSIAN)
I)o~mn, I A Transp Stroit, ~8, Aug 1976, P12-14 784082 FINITE ELEMENT ANALYSIS OF A LARGE DIAMETER STEEL PIPELINE Nath, P Transport and Road Research Lab lab report 778, 1977 Gives details of the analysis of a 1.8m diameter buried pipe structure on which a full scale experiment was conducted in 1971. Compares the ~ ! y t i c a l amd experimental results and gives a method for estimating the influence of backfill compaction on the measured results.
784083 R~ELIMINARY EVALUATION OF STRUCTURAL AND GROUNDWATER CONDITIONS IN UND~GROUND MINES AND EXCAVATIONS Raven, K G Canada: Geological Survey, paper 77-1A, 1977, P3~42
Mines 784o84 SAFETY OF ABANDONED UNDERGROUND QUARRIES IN THE NORD-PAS DE CALAIS AREA (IN FRENCH) Delbeeq~ J M Industrie Minerale, %"39, N3, March 1977, PZ29-146 784085 EXAMINATION OF THE P H E N ~ N O N OF DEFORMATION AND SPAZ~NG OF ~ m COAL FACE IN SOME WC~KINGS IN THE TATABANYA COAL FIELD (IN GERMAN) Hullan, J PUbl Hung Min Res Inst, NIg, 1976, P65-91 Describes the progress of forward movement and spalling at 3 faces in the Tatabamya brown coalfield, with a proposal for reducing it6 784086 RELATION OF GEOLOGY TO STRESS CHANGES CAUSED BY UNDERGROUND EXCAVATION IN CRYSTALLINE ROCKS AT IDAHO SPRINGS, COLORADO L e t F T; Abel, J F; Nichols, T C U S Geological Survey, prof paper N965, 1976,
4~
Repc~ts a study of the effects of geology amd
rock stresses on mining in complexly deformed anisotropic metaseddmentary rocks usirg thecre tical, laboratory and field irmmstigations.
Tunnels See also: 784125 784087 ON THE TIME-DEPENDENT EFFECTS IN ADVANCING TUNNELS Ghaboussi~ J; Gioda, G Int J N%~n Anal Meth Geomeeh, Vl, N3, July-Se 1977, P249-269 A finite element study is presented of the short-term effects that devlop when a tunnel i driven in a grourd showing viscous behaviour associated with the devlatcric deformations. Axisy~netric conditions around the tunnel cent: line are assumed and the process of excavation is simulated by means of a step-by-step time incremental technique. The Kelvin's model is used to approximate the medium creep behaviour and a simple procedure is presented that allow the determination of the creep model constants from the laboratory test data. Various rates o advancing, the presence of an unsupported zone close to the tunnel face and the temporary interruption of the excavation process are considered. For the viscous model and the analytical technique used, simple, approximate relationships are presented for the displaceme: around the tunnel and overexcavation volume as functions of the rate of excavation advance Auth.
784o88 I~TERACTION ~EYWEEN TWO PARAIIEL TUNNELS Ghabou~si, J; Ranken, R E Int J Num Anal Meth Geomech, Vl, NI, Jan-Msr 1977, P75-103 A series of finite element analyses ware performed to study the behaviour of a system of two parallel and adjacent tunnels. Various sequences of excavation of the two tunnels and installation of tunnel liners have been simulated in the analyses. Influence of various parameters on the behaviour of the two parallel tunnels has been investigated. The important parameters considered in this study are: the width of the pillar separating the two tunnels; the tunnel depth; support conditior~ sequence of excavation; and, to sc~e extent, the izflue, of plastic yielding in the medium surrounding two tunnels. The investigation was restricted to 2-dlmensional plane-strain analyses. 784089 EVALUATION OF FUNCTION OF PASSIVE LOAD FOR TUNNEL LINING Chou, T Soils Found, VlT, N1, March 1977, P13-21 Gives a numerical method of ar~lysis of the tunnel lining taking into account p~f:sive !o~s Discusses characteristics of passive loads associated with magnitude ~r~ shape of active los thickr~ss of the llnir~ and voids betuveen +~ae lini~g and the s~rroundimg rock. 784o9o ROCK PROPEN~ZES AND ~CHANTCAL ~ Y V I N G (IN ~A~) Habenicht, H; Gehrimg, K Berg Huttenm s Mh s VI21, NI2, Dec 1976, P5O6-514 The selection of equipment for roadway, face,