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Jones Island Inline Pump Station: design and construction considerations
31A
861247 Seismic and volcanic hazards Hatton, J W Proc of the Symposium on Engineering for Dams and Canals, Aiexandra, 24-27 Nov 1983 V9, N4, P15.1-15.4. Publ New Zealand." lnst Prof Engr New Zealand, 1983 Preventive engineering to cope with seismic and volcanic activity is briefly discussed with consideration given to hazard identification and evaluation in engineering terms, risk, lessons from the performance of existing structures, behaviour of construction materials, analysis and design. Examples from the design of the Clyde Dam, New Zealand, are used to illustrate several points.
Underground Excavations See also: 861072
861248 Large twin underground caverns for TARP's Mainstream pumping station Sandell, D H; Goyal, B B; Sylvester, A U Underground Space V9, N2/3, 1985, P126-130 The Tunnel and Reservoir Plan (TARP) to control flooding and pollution in Chicago, USA, included two 29.3m high underground caverns at a depth of almost 110m. Site geology and hydrogeology were established before construction started, from site investigation and from data from other nearby excavations. Construction was by drill and blast, starting from an exploratory adit, constructing the roof arch and excavating to full depth in five bench lifts. The arch was supported with a cast in situ concrete lining, and bolts over a 5cm layer of shotcrete were used for the sidewalls. Settlements were monitored with borehole extensometers. Multiple pass grouting was used in one cavern to prevent groundwater ingress. The geologic conditions encountered resembled those anticipated, permitting successful and safe excavation.
861249 Jones Island Inline Pump Station: design and construction considerations Smirnoff, T P; Lundin, T K Underground Space V9, N2/3, 1985. P131-137 This underground pump chamber in Wisconsin, USA, will be excavated in dense dolomites with bedding plane discontinuities. Upper boundary rock properties were measured in the laboratory and in situ stresses estimated from measurements at nearby sites. The pump chamber cross section was analysed using the boundary element method and computed maximum stresses used as a guide to minimise stresses around the opening and instability. Loosening and movement along discontinuities as a source of loading on the chamber were taken into account. The final design seeks to maximise the use of surrounding rock as the final structural support system. Early installation of support to minimise rock movement and the need for additional support, and staged construction are recommended.
Stresses around undergroundopenings See also: 861070, 861148 861250 Interpretation of displacements resulting from excavation of tunnels (In German) Plischke, B Proc 6th National Rock Mechanics Symposium, Aachen, 3-4 April 1985 P69-74. Publ Essen: German Society for Soil Mechanics and Foundation Engineering, 1985 Displacements measured during tunnel excavation can be used to determine large-scale rock mass deformability and in situ stresses. At this scale, individual discontinuities or inhomogeneities have insignificant effects on interpretation of results. Interpretation is based on numerical analysis. A simple example is used to demonstrate the method.
861251 Construction and design of openings in swelling rocks (In German) Gruter, R Proc 6th National Rock Mechanics Symposium, Aachen, 3-4 April 1985 P75-84. Publ Essen: German Socieo' Jbr Soil Mechanics and Foundation Engineering, 1985 Invert heaves of up to one metre have occurred in rocks containing anhydrite. Recent systematic work has researched the causes and found preventative measures. Chemical and physical causes of swelling, and its dependence on supply of water and in situ stress, are discussed. Mathematical analysis examines the influences of the Young's modulus and swelling potential of the rock, and size, shape and depth of the tunnel. Constructional methods to limit swelling are considered, including removal of water, avoidance of loosening material and sealing the surfaces after drivage. It is still necessary to design the tunnel lining specifically to accommodate swelling pressure.
861252 Italian experiences with tunnel portals in difficult ground Barisone, G; Pelizza, S; Pigorini, B Proc of the Eurotannel '83 Conference, Basle, 22-24 June 1983 P157-163. Publ Marlow: Access ConJerences Ltd, 1983 Particular difficulties are often experienced in the excavation of the portals for large tunnels, because of geological, morphological and environmental conditions. Ground reinforcement and excavation techniques adopted in the excavation of the portals of some large Italian tunnels, already completed or under construction, are examined; data are provided on construction methods and results. Auth. 861253 Instrumentation and monitoring for pillar extraction in a deep, faulted uranium mine Scotese, T R
In: Rock Mechanics in Productivity and Protection (Proceedings of the Twenty-Fifth Symposium on Rock Mechanics, Evanston, Illinois, 25-27 June 1984) P513-522. Publ New York: AIME, 1984 The monitoring system at the Mt. Taylor Mine, New Mexico, USA, measures drift convergence around stopes using extensometers, stress changes in pillars using pressuremeters and load change in drifts under stopes using load cells. Results include convergence contour maps, convergence-time and load-time graphs, a stress increase contour map and abutment load limit maps. The size of the pillars around the extraction
861247 Seismic and volcanic hazards Hatton, J W Proc of the Symposium on Engineering for Dams and Canals, Aiexandra, 24-27 Nov 1983 V9, N4, P15.1-15.4. Publ New Zealand." lnst Prof Engr New Zealand, 1983 Preventive engineering to cope with seismic and volcanic activity is briefly discussed with consideration given to hazard identification and evaluation in engineering terms, risk, lessons from the performance of existing structures, behaviour of construction materials, analysis and design. Examples from the design of the Clyde Dam, New Zealand, are used to illustrate several points.
Underground Excavations See also: 861072
861248 Large twin underground caverns for TARP's Mainstream pumping station Sandell, D H; Goyal, B B; Sylvester, A U Underground Space V9, N2/3, 1985, P126-130 The Tunnel and Reservoir Plan (TARP) to control flooding and pollution in Chicago, USA, included two 29.3m high underground caverns at a depth of almost 110m. Site geology and hydrogeology were established before construction started, from site investigation and from data from other nearby excavations. Construction was by drill and blast, starting from an exploratory adit, constructing the roof arch and excavating to full depth in five bench lifts. The arch was supported with a cast in situ concrete lining, and bolts over a 5cm layer of shotcrete were used for the sidewalls. Settlements were monitored with borehole extensometers. Multiple pass grouting was used in one cavern to prevent groundwater ingress. The geologic conditions encountered resembled those anticipated, permitting successful and safe excavation.
861249 Jones Island Inline Pump Station: design and construction considerations Smirnoff, T P; Lundin, T K Underground Space V9, N2/3, 1985. P131-137 This underground pump chamber in Wisconsin, USA, will be excavated in dense dolomites with bedding plane discontinuities. Upper boundary rock properties were measured in the laboratory and in situ stresses estimated from measurements at nearby sites. The pump chamber cross section was analysed using the boundary element method and computed maximum stresses used as a guide to minimise stresses around the opening and instability. Loosening and movement along discontinuities as a source of loading on the chamber were taken into account. The final design seeks to maximise the use of surrounding rock as the final structural support system. Early installation of support to minimise rock movement and the need for additional support, and staged construction are recommended.
Stresses around undergroundopenings See also: 861070, 861148 861250 Interpretation of displacements resulting from excavation of tunnels (In German) Plischke, B Proc 6th National Rock Mechanics Symposium, Aachen, 3-4 April 1985 P69-74. Publ Essen: German Society for Soil Mechanics and Foundation Engineering, 1985 Displacements measured during tunnel excavation can be used to determine large-scale rock mass deformability and in situ stresses. At this scale, individual discontinuities or inhomogeneities have insignificant effects on interpretation of results. Interpretation is based on numerical analysis. A simple example is used to demonstrate the method.
861251 Construction and design of openings in swelling rocks (In German) Gruter, R Proc 6th National Rock Mechanics Symposium, Aachen, 3-4 April 1985 P75-84. Publ Essen: German Socieo' Jbr Soil Mechanics and Foundation Engineering, 1985 Invert heaves of up to one metre have occurred in rocks containing anhydrite. Recent systematic work has researched the causes and found preventative measures. Chemical and physical causes of swelling, and its dependence on supply of water and in situ stress, are discussed. Mathematical analysis examines the influences of the Young's modulus and swelling potential of the rock, and size, shape and depth of the tunnel. Constructional methods to limit swelling are considered, including removal of water, avoidance of loosening material and sealing the surfaces after drivage. It is still necessary to design the tunnel lining specifically to accommodate swelling pressure.
861252 Italian experiences with tunnel portals in difficult ground Barisone, G; Pelizza, S; Pigorini, B Proc of the Eurotannel '83 Conference, Basle, 22-24 June 1983 P157-163. Publ Marlow: Access ConJerences Ltd, 1983 Particular difficulties are often experienced in the excavation of the portals for large tunnels, because of geological, morphological and environmental conditions. Ground reinforcement and excavation techniques adopted in the excavation of the portals of some large Italian tunnels, already completed or under construction, are examined; data are provided on construction methods and results. Auth. 861253 Instrumentation and monitoring for pillar extraction in a deep, faulted uranium mine Scotese, T R
In: Rock Mechanics in Productivity and Protection (Proceedings of the Twenty-Fifth Symposium on Rock Mechanics, Evanston, Illinois, 25-27 June 1984) P513-522. Publ New York: AIME, 1984 The monitoring system at the Mt. Taylor Mine, New Mexico, USA, measures drift convergence around stopes using extensometers, stress changes in pillars using pressuremeters and load change in drifts under stopes using load cells. Results include convergence contour maps, convergence-time and load-time graphs, a stress increase contour map and abutment load limit maps. The size of the pillars around the extraction