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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-348
... bore and eject grout exactly along the pertinent geometric axle. c) drilling and jet grouting operations related to the conical crown of columns. Spoil material was collected systematically during both operations and any sensible difference in regard to the geological- geotechnical profile available...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-345
... 20 and 70. natural water content peat water table peaty ground apartment block sewer treatment plant ground treatment excavation construction peaty clay peaty soil Sri Lanka infrastructure facility settlement energy intensity operation tamper compressible material compression...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-497
... program is to manage the risk of instability of the operating and permanent batters within the Loy Yang Mine and waste dump. The program also meets the requirements of the relevant legislation and regulations. The program has been implemented to carry out an adequate level of geotechnical investigation...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-624
... of its advantage in productivity and recovery rate. A typical CHM operation is illustrated in Figure 1. Rectangular entries, usually 3.5m wide, are cut by a remotely controlled continuous miner to a depth of up to 500m. Pillars are left in between the entries to ensure the stability of the mined panel...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-127
...ENVIRONMENTAL, OPERATIONAL AND ECONOMICAL BALANCE IN THE DESIGN OF A TAILINGS IMPOUNDMENT L. Valenzuela1, S. Barrera2 ABSTRACT The paper presents the design adopted for the tailings impoundment of La Candelaria mine, located in the North of Chile in a semidesert zone next to a highly developed...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-147
... without the appropriate control. Although the surface layers are laid more scrupulously, and techniques are generally used to improve the soil once the landfilling operations have been completed, the resulting domain is randomly heterogeneous. This may cause differential settlement capable of damaging...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-152
... of £1.9 billion, a staff of 15,000 and working in thirty countries on 600 sites or offices, became Carillion. Carillion operates in all sectors of the civil and building construction market and is involved in many ground and geotechnical-related activities, ranging from tunnelling and deep station...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-015
... ABSTRACT: Permanent safe solutions are needed for isolating from the human environment the radioactive waste resulting from the operation of commercial nuclear power plants, as well as long-lived wastes from other nuclear applications in research, industry and medicine. The only option...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-378
... ABSTRACT: This paper analyses the behaviour of piles adjacent to tunnelling operations, focusing on the case of piles whose tips are located above the horizontal axis of a tunnel. In the analysis, the ground movements induced by tunnelling are estimated using a published analytical method...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-007
... and are squeezed into excavations where they are exposed. This has resulted in the structural failure of the concrete lining of the shaft and a shortening of the vertical axis in its barrel. An unacceptable risk in the safe operation of the shaft system was thus created. This paper describes the measures taken...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-075
... that such support will provide adequate support at great depth. 1 INTRODUCTION The depth of operation of gold mines in South Africa is continually increasing and, at present, the deepest mining production is taking place at some 3400m below surface. Mining at such depths is a very difficult operation...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-142
... mathematical models. The main body of our research work is contained in reports of the MIT UFRAC project (Cleary, 1987), a number of which have been published (e.g. Cleary et al., 1983, 1984). A major application of this work has been to improvement of field operations involved in hydraulic fracturing (e.g...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-086
... geology Wapno operation Reservoir Characterization inundation room 36 Upstream Oil & Gas inudation gypsum cap pillar deposit salt deposit dome sill pillar mining salt dome Poland salt diapir dome wapno outflow exploitation Rock at Great Depth. Maury & Fourmaintraux (eds), ©...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-166
... Abstract: Cyclic steam stimulation is used to produce bitumen from the Clearwater Formation near Cold Lake, Alberta. In this operation, predetermined volumes of steam are injected into the formation at high pressure to reduce the viscosity of the bitumen, enabling it to flow to the well bore...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-054
... necessite Ie recalage des epontes, operation problematique. Elle ne peut apporter des renseignements que sur l'endornmagement eventuel subi par les epontes après que celles-ci aient ete soumises à une sol licitation mecanique. Pour acceder à des informations 2D dans Ie plan de la fracture et non plus...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-043
... Ian long has been oonstructed at the depths up to 1.5 Ian in extremely diffioult rock conditions. During the first several years of operation severe damages to the lining occurred in some parts of the tunnel, obviously due to different phenomena in dif- ferent regions. Numerical analysis has been...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-071
...Rock Mechanics and Power Plants, Romana (ed.) C 1988 Salkems, Rotterdam. ISBN 90 6191 8278 A large-scale borehole heat store during five years of operation BoNordell Department of Water Resources Engineering (WREL), Lu/ed University of'Iechnology, Lu/ed, Sweden ABSTRACT The borehole heat sto~e...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-041
... headrace tunnels of Hingtan Pumped Storage Project, each having a 7.5 m inside diameter and a length of about 3.1 km, are proposed to run almost parallel to each other for conveying the discharges required for operation of six reversible pump- turbine power generating units installed under the Project. Due...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-031
... technology may also be adapted to other projects with extreme demands for effective fluid or gas containment such as rock storages for natural gas (LNG) and radioactive waste repesitories. INTRODUCTION In Norway more than 80 unlined pressure shafts and pressure tunnels are presently in operation...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-025
... cement directly to the periphery of a 38 mm diameter pilot hole by inflating the rubber membrane. A pressuremeter test can be conducted in situ, prior to the overcoring operation, to verify correct strain gauge operation and to determine the modulus of the rock. The instrument has been used to measure...

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