- Email: [email protected]
On modelling techniques for the study of tunnels in jointed rock. Symposium. In new horizons in rock mechanics
144A
141o VOGELZANG, A ASPELING, JF Survey of the connecting tunnels driven from Western Areas Gold Mining Co.Ltd., to Elsburg Gold Mining Co.Ltd., with the aid of the gyro-theodolite. 2F. J. INST.MINE SURV. S. A.V17, N4, DEC .1973,P79-82. The underground survey was carried out in three stages: 1. The line extension survey; 2. The check survey, termed the "routine" survey; and 3. The routine survey was followed by the gyro-theodolite survey. 1411 LIGHTFOOT 3RG Survey of the plateau section of the Orange-Fish tunnel. -A detailed description of the surveying techniques used is given and the data obtained is presented, lOF, Tabls. J.INST.MINE SURV. S.A.V17, N4, DEC. 1974, P83-119~ 1412 BAUER, A QUEENS UNIV. KINGSTON, ONT. CDN The status of tunnalling. Proc. 8th Canadian Rock Mechanics Symposi1~n, Toronto, Nov. 1972. 8F,7R. MINES BRANCH, DEI~. ENERGY, MINES, RESOURCES, OITAWA, CANADA, 1973, Pl-15. A shaft introduction to this paper provides a historical review of tunnelling. The author then proceeds to consider briefly the methods used in several aspects of tunnelling operations. 1. Tunnel boring (mechanical turmel boring machines, continuous boring, drilling and blasting); 2. Drilling and blasting (considerations of suitability of this method to particular corzlltlons); 3. Current tunnelling in mini~g~ 4. Ramp layout; 5. Ramp grades; 6. Ramp connections; 7. Ramp dimensions; 8. Development methods; 9. Raise boring. 1413 ARMSTRONG, EL BUR .RECLAM. DEPT. INI~IOR, WASHINGTON, USA The Stillwater tunnelling project of the Bureau of Reclamation. Proc. 8th Canadian Rock Mechanics Sympositun, Toronto, Nov.1972. 5F,4R. MINES BRANCH, DEPT. ENERGY, MINES, RESOURCES, O~TAWA, CANADA, 1 973, PI7- 30 • The Bureau of Reclamation plans to start construction of Stillwater tunnel in the spring of 1973. The tunnel will be the site of an extensive research programme aimed at achieving rapid and economical tunnel construction. This paper discusses aspects of the programme which relate to geologic and geophysical investigations, laboratory, in-situ investigations and tunnel support and lining instrumentation. Planned geologic and geophysical investigations include detailed mapping, extensive vertical and horizontal drilling, and trial of several borehole logging systems. Laboratory testing will provide extensive petrographic descriptions and rock Troperty data. Other research will be conducted to develop a standard boreability test. In-situ investigations will measure stresses, rock Joint shear strength and unlaxial deformation moduli. The tunnel will be instrumented to measure rock displacement, strain and load on the initial support systems and final lining and movements which occur at the lining-rock interface. Auth. 1414 WEIRICH, KW BER NOI/9 AG, WALENSTADT, CH The economic design of ttlnnel linings. Proc. 8th Cansdlan Rock Mechanics Symposium, Toronto, Nov. 1972. 12F. MINES BRANCH, DEI~. ENERGY, MINES, RESOURCES, OTTAWA, CANADA, 1973, P4~-66. The difficulties of an economical design for tunnel linings in rock are well known. The individual opinions on the best solutions vary from country to country. The latest knowledge in this field, based on exterzled measurements and computer analysis, show how to solve this problem by considering the following interdeperzlent aspects: 1. stiffness of the lining with a voidless connection to the rock; 2. the interdependent influence of
rock arzl lining deformation with the time factor; and 3. the influence of the building method specially near the tunnel face. A review is given of the different calculation methods with respect to their use in many countries. Auth. 1415 WEBER, E DEMAG AG, DUISBURG, D Practical experience in rock behaviour in turmelling. Proc. 8th Canadian Rock Mechanics Symposium, Toronto, Nov. 1972. 2T. MINES BRANCH, E~PT. ENERGY, MINES, RESOURCES, OI~fAWA, CANADA, 1973, P187- 201. Practical experience in the employment of full-sectlon and face-trace-machlnes in tunnelling and mining is reviewed, taking into special consideration the rock formation conditions. 1416 GOODMAN, RE UNIV. CALIF. BERKELEY, USA HEUZE, FE DAMES AND MOORE SAN FRANCISCO, USA BUREaU, G" DAMES AND MOORE SAN FRANCISCO, USA On modelling techniques for the study of tunnels in Jointed rock. Symposia. In New Horizons in Rock Mechanics. 17F, 9T, 19R. PROC.14TH ~ S Y U M ON ROCK MECHANICS,ASCE, NEW YORK, 1973, P~41-479. The model methods considered here are finite element analysis and scaled physical models. This paper discusses present capabilities of these methods in the context of two specific urderground problems. The first is a "b~mkcalculation" of rock de.~ormatlon in circular tunnels subjected to a nuclear direc+&y trar~mltted ground shock (the "Piledrlver" experiment). The second is a physical model study to compare the response of tunnels, under increasi~ load, with different rock bolt configurations. The methodolo=y and results are described in detail.
P ower plants 1417 MCCREA~, DR ACRES IRT~NAT. LTD. NIAGARA FALLS, CDN MERRI~, AH ACRES INTERNAT. LTD. NIAGARA FALLS, CDN MATERON, BN ACRES I~I~NAT .LTD. NIAGARA FAILS, CDN Rock excavations at Alto Anchlcaya Project, Columbia. Proc. 8th Canadian Rock Mechanics Symposium, Toronto, Nov. 1972. 8F,2R. ~flNE BRANCH2 DEPT. ENERGY~MI NES, RESOURCES, OTTAWA , CANADA, 1973 ,P31-45 • This hydro-electric project, located in the Andes Mountains consist of a 140 metre high concre~.e-fsmed rockfill dam, with water being conducted through an 8.1 km long tunnel to an upper surge shaft at the head of the single-inclined penstock tunnel. The under~round pcwerhouse will ~enerate a total output of 340,000 kw. The interpretation of exploratory data is briefly discussed and the authors then consider some of the major excavations at Alto Anchicaya, emphasizing the primary, essentially inflexible decisions made on +he basis of ~eological interpretation, the areas of design flexibility which were maintained, and the results of this approach.
In-situ stresses in ground and stress around underground openings 1418 CHANG, CY NAIR, K Development and applications of theoretical methods for evaluating stability of openings in rock. Final report. Figs .Tablss U~SR. US BUR.MINES CONYRACT NO H022003 ,DEC.1973,209P. A ~eneral plane strain finite element computer program ~¢as developed for the analysis of underground openings in a l~evious research pro~ra~ne. This report deals with research to add +.o the capabilities of this computer pro-
141o VOGELZANG, A ASPELING, JF Survey of the connecting tunnels driven from Western Areas Gold Mining Co.Ltd., to Elsburg Gold Mining Co.Ltd., with the aid of the gyro-theodolite. 2F. J. INST.MINE SURV. S. A.V17, N4, DEC .1973,P79-82. The underground survey was carried out in three stages: 1. The line extension survey; 2. The check survey, termed the "routine" survey; and 3. The routine survey was followed by the gyro-theodolite survey. 1411 LIGHTFOOT 3RG Survey of the plateau section of the Orange-Fish tunnel. -A detailed description of the surveying techniques used is given and the data obtained is presented, lOF, Tabls. J.INST.MINE SURV. S.A.V17, N4, DEC. 1974, P83-119~ 1412 BAUER, A QUEENS UNIV. KINGSTON, ONT. CDN The status of tunnalling. Proc. 8th Canadian Rock Mechanics Symposi1~n, Toronto, Nov. 1972. 8F,7R. MINES BRANCH, DEI~. ENERGY, MINES, RESOURCES, OITAWA, CANADA, 1973, Pl-15. A shaft introduction to this paper provides a historical review of tunnelling. The author then proceeds to consider briefly the methods used in several aspects of tunnelling operations. 1. Tunnel boring (mechanical turmel boring machines, continuous boring, drilling and blasting); 2. Drilling and blasting (considerations of suitability of this method to particular corzlltlons); 3. Current tunnelling in mini~g~ 4. Ramp layout; 5. Ramp grades; 6. Ramp connections; 7. Ramp dimensions; 8. Development methods; 9. Raise boring. 1413 ARMSTRONG, EL BUR .RECLAM. DEPT. INI~IOR, WASHINGTON, USA The Stillwater tunnelling project of the Bureau of Reclamation. Proc. 8th Canadian Rock Mechanics Sympositun, Toronto, Nov.1972. 5F,4R. MINES BRANCH, DEPT. ENERGY, MINES, RESOURCES, O~TAWA, CANADA, 1 973, PI7- 30 • The Bureau of Reclamation plans to start construction of Stillwater tunnel in the spring of 1973. The tunnel will be the site of an extensive research programme aimed at achieving rapid and economical tunnel construction. This paper discusses aspects of the programme which relate to geologic and geophysical investigations, laboratory, in-situ investigations and tunnel support and lining instrumentation. Planned geologic and geophysical investigations include detailed mapping, extensive vertical and horizontal drilling, and trial of several borehole logging systems. Laboratory testing will provide extensive petrographic descriptions and rock Troperty data. Other research will be conducted to develop a standard boreability test. In-situ investigations will measure stresses, rock Joint shear strength and unlaxial deformation moduli. The tunnel will be instrumented to measure rock displacement, strain and load on the initial support systems and final lining and movements which occur at the lining-rock interface. Auth. 1414 WEIRICH, KW BER NOI/9 AG, WALENSTADT, CH The economic design of ttlnnel linings. Proc. 8th Cansdlan Rock Mechanics Symposium, Toronto, Nov. 1972. 12F. MINES BRANCH, DEI~. ENERGY, MINES, RESOURCES, OTTAWA, CANADA, 1973, P4~-66. The difficulties of an economical design for tunnel linings in rock are well known. The individual opinions on the best solutions vary from country to country. The latest knowledge in this field, based on exterzled measurements and computer analysis, show how to solve this problem by considering the following interdeperzlent aspects: 1. stiffness of the lining with a voidless connection to the rock; 2. the interdependent influence of
rock arzl lining deformation with the time factor; and 3. the influence of the building method specially near the tunnel face. A review is given of the different calculation methods with respect to their use in many countries. Auth. 1415 WEBER, E DEMAG AG, DUISBURG, D Practical experience in rock behaviour in turmelling. Proc. 8th Canadian Rock Mechanics Symposium, Toronto, Nov. 1972. 2T. MINES BRANCH, E~PT. ENERGY, MINES, RESOURCES, OI~fAWA, CANADA, 1973, P187- 201. Practical experience in the employment of full-sectlon and face-trace-machlnes in tunnelling and mining is reviewed, taking into special consideration the rock formation conditions. 1416 GOODMAN, RE UNIV. CALIF. BERKELEY, USA HEUZE, FE DAMES AND MOORE SAN FRANCISCO, USA BUREaU, G" DAMES AND MOORE SAN FRANCISCO, USA On modelling techniques for the study of tunnels in Jointed rock. Symposia. In New Horizons in Rock Mechanics. 17F, 9T, 19R. PROC.14TH ~ S Y U M ON ROCK MECHANICS,ASCE, NEW YORK, 1973, P~41-479. The model methods considered here are finite element analysis and scaled physical models. This paper discusses present capabilities of these methods in the context of two specific urderground problems. The first is a "b~mkcalculation" of rock de.~ormatlon in circular tunnels subjected to a nuclear direc+&y trar~mltted ground shock (the "Piledrlver" experiment). The second is a physical model study to compare the response of tunnels, under increasi~ load, with different rock bolt configurations. The methodolo=y and results are described in detail.
P ower plants 1417 MCCREA~, DR ACRES IRT~NAT. LTD. NIAGARA FALLS, CDN MERRI~, AH ACRES INTERNAT. LTD. NIAGARA FALLS, CDN MATERON, BN ACRES I~I~NAT .LTD. NIAGARA FAILS, CDN Rock excavations at Alto Anchlcaya Project, Columbia. Proc. 8th Canadian Rock Mechanics Symposium, Toronto, Nov. 1972. 8F,2R. ~flNE BRANCH2 DEPT. ENERGY~MI NES, RESOURCES, OTTAWA , CANADA, 1973 ,P31-45 • This hydro-electric project, located in the Andes Mountains consist of a 140 metre high concre~.e-fsmed rockfill dam, with water being conducted through an 8.1 km long tunnel to an upper surge shaft at the head of the single-inclined penstock tunnel. The under~round pcwerhouse will ~enerate a total output of 340,000 kw. The interpretation of exploratory data is briefly discussed and the authors then consider some of the major excavations at Alto Anchicaya, emphasizing the primary, essentially inflexible decisions made on +he basis of ~eological interpretation, the areas of design flexibility which were maintained, and the results of this approach.
In-situ stresses in ground and stress around underground openings 1418 CHANG, CY NAIR, K Development and applications of theoretical methods for evaluating stability of openings in rock. Final report. Figs .Tablss U~SR. US BUR.MINES CONYRACT NO H022003 ,DEC.1973,209P. A ~eneral plane strain finite element computer program ~¢as developed for the analysis of underground openings in a l~evious research pro~ra~ne. This report deals with research to add +.o the capabilities of this computer pro-