... construction of the 82 m stretch of the mentioned tunnel involved in the undercrossing of the canalized Tamandatueí river. koshima doro altan septum column construction Upstream Oil & Gas diameter septum Crown Drilling jet-grouted column river borehole operation excavation Power...

... 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...

... ABSTRACT: This paper outlines the stability conditions at the Loy Yang Mine and the batter stability program. The purpose of the batter stability 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...

... Callide Mine used an Auger System to mine coal. Since then, at least 13 coal mines in Australia have applied the highwall mining technologies over more than 30 pits. The CHM has been more widely used than Augers because of its advantage in productivity and recovery rate. A typical CHM operation...

...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...

... 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...

... resource use objective iso 14001 environmental impact operation ems cycle environmental management performance indicator reduction scheme waste minimisation environmental management system sustainability business group carillion environmental performance management system...

... 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...

... 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...

... but act plasticaly 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...

... 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...

... 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...

..., particularly for comparative situations. Finally, mining at a depth of 5000m, Using soft backfill for support, is analysed, and it is concluded 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...

... 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...

... 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), ©...

... ABSTRACT: Hydraulic tunnel 48.3 Ian long has been constructed at the depths up to 1.5 Ian in extremely difficult 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 different...

... and five years of operation. The measurement programme was completed in May 1988. A final report will be published in the autumn of 1988. The storage system is now in its 6th charging period. This paper gives a brief description of the plant. Experiences from the operation period and operation data...

..., and simulating the rock mass The mathematical model considers rock rheologic characteristics within the scope of 269 H Figure 1. Reservoir Characterization Thickness alternative scheme consideration Artificial Intelligence Tousheh river shale operation tousheh sandstone conduit geological...

... 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...

... 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...