Practical methods of shallow shaft sinking

Practical methods of shallow shaft sinking

125A Radioactive waste disposal See also: 873053, 873081 873318 Coupled analysis of flow and heat around a high-level nuclear waste repository Utsugi...

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125A

Radioactive waste disposal See also: 873053, 873081 873318 Coupled analysis of flow and heat around a high-level nuclear waste repository Utsugida, Y Proc 5th International Conference on Numerical Methods in Geomechanics, Nagoya, 1-5 April 1985 I/2, P711-716. Publ Rotterdam: A. A. Balkema, 1985 The roles of convection, conduction and groundwater flow in heat transport around a high-level nuclear waste repository have been examined using finite element analysis. In the near field, heat flow by conduction is more significant than that by convection and it can be inferred that temperature distribution can be realistically obtained by conduction analysis. In the far field, convection is shown to be of minor importance for intact rock, but to play a significant role in fractured rock. 873319 Shaft development at the Waste Isolation Pilot Plant Bivens, D A Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P1060-1069. Publ New York." AIME, 1985 The purpose of the WIPP project is to store low level transuranic waste in an underground environment which will ensure a safe atmosphere for the life of the stored waste. Two shafts sunk at the WlPP site will be used to conduct a series of long term experiments in order to finalize the suitability of the geology and the environment for the transuranic waste storage. The two shafts were excavated around a borehole by conventional methods.

Underground construction methods 873320 Underground pumphouse excavation at the Mainstream pumping station, Chicago Sylvester, A Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P822-830. Publ New York: AIME, 1985 The drill-and-shoot excavation of the two underground pumphouses for the Metropolitan Sanitary District of Greater Chicago's Mainstream Pumping Station is described. The construction sequence involved the concurrent excavation and support of the two 19.2m wide by 83.6m long by 29.3m high caverns. Excavation was interrupted after taking the 6.1m high top heading in order to cast-in-place a 0.2m thick by 19.2m wide concrete arch. The remaining 23.3m of rock was then excavated in benches below the concrete arch. Auth. 873321 Roadheader drift excavation and geomechanieal rock classification at San Manuel, Arizona Sandbak, L A Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, P902-916. Publ New York: AIME, 1985 Drift excavation by boom-type roadheaders in the San Manuel and Kalamazoo sulphide copper ore bodies is demonstrated. Geomechanical rock classification in conjunction with detailed geologic mapping was necessary to assess roadheader performance, and to predict advance rates in the varied rock

classes. Rapid excavation and less fractured ground are obvious advantages of roadheader drift excavation over conventional drill and blast techniques. 873322 Practical methods of shallow shaft sinking Brady, J J; Bhore, J S; Gordon, R B; Honeycutt, J W Proc of the 1985 Rapid Excavation and Tunneling Conference, New York, 16-20 June 1985 V2, Pl143-1167 Publ New York: AIME, 1985 The authors have a combined construction experience of 70 years and approximately 50 shafts have been sunk under their direct and daily participation. Several shafts have been selected from each of their experiences and have been briefly summarized. 873323 Shafts of the '90s. A contribution Sparks, D Proc 2nd Group Mining Symposium, Johannesburg, Sept 1985 P121-126. Publ Johannesburg: Anglo American Corporation, 1985 Four methods of boring and equipping a 400m deep, 6m diameter subvertical shaft, typical of those found in South African gold mines, are compared. The techniques are: (1) blind boring with drill pipe; (2) blind boring without drill pipe; (3) down reaming with drill pipe; and (4) down reaming without drill pipe. Commercially available equipment and that under development are considered. With current technology, option (4), using a V mole cutter, is proposed as the most suitable method. 873324 MicrotunnelHng in Japan Tohyama, S In: NO-DIG 85. Trenchless Construction for Utilities (papers to the Conference, London, 16-18 April 1985) P19-29. Publ London: Institution of Public Health Engineers. 1985 Microtunnellling machines and techniques developed in Japan are described. They can be broadly classified into four categories, according to their mode of excavation and earth/rock/muck removal. These are: thrust (jack-in); auger; rotating pipe; and slurry shield. Areas where further work is needed are identified. 873325 Development of impact moling techniques in the UK: design, use and cost considerations Etherton, P T In: NO-DIG 85. Trenchless Construction for Utilities (papers to the Conference, London, 16-18 April 1985) P99-108. Publ London: Institution of Public Health Engineers, 1985 The history and development of the impact mole as a tool in trenchless laying of pipes is described. Design and principles, and the effect of ground conditions are examined. Equipment and methods to install services of various diameters are presented. The uses of the impact mole for jacking of ducts, pipe bursting or pipe ejection are briefly considered. 873326 Auger boring for pipeline construction Munro, A G; McMurdie, W D In: NO-DIG 85. Trenehless Construction for Utilities (papers to the Conference, London, 16-18 April 1985) P109-117. Publ London: Institution of Public Health Engineers, 1985 The use of auger boring to excavate boreholes for the construction of buried pipelines has been pioneered by the authorities of Melbourne, Australia. Full face holes to diameter of

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