... of this study is to achieve safer stoping environment with an increase in stope interval from 30 to 45 m to enhance production and productivity with safety. reservoir geomechanics Upstream Oil & Gas extraction stability Reservoir Characterization displacement operation crosscut wall movement...

... Abstract The Telfer underground sub-level cave (SLC) operations are located approximately 600 to 1000 m below the west wall of Main Dome open pit at the Telfer Gold Mine, Australia. The Telfer SLC commenced caving in 2006 and broke through to the surface in 2009 forming a large subsidence zone...

... in and around the goaf edge. Under the existing geo-mining conditions of some of the recent MD operations in Indian coalfields, the extent of spalling varied from 0.5 m to 2 m only. Considering an acceptable dimension of the rib/snook for these site conditions, the position of RBBLS is shifted out-bye from...

.... dynamic load dynamic load change numerical calculation Reservoir Characterization calculation stability MPa Upstream Oil & Gas steel operation procedia engineering 191 numerical modeling stress concentration zone metals & mining masny seismic event hmh stress exploitation rock...

... ground structural geology mechanical excavation metro tunnel Reservoir Characterization TBM ground condition excavation remedial work tunnel operation injection complex geology tunnel boring machine rock engineering problem Turkey Bilgin cutterhead Rock Mechanics and Rock Engineering...

... types of cavern, despite their similarity in shape. Requirements dictated by the unlike conditions of future operation of each type of cavern directly influence methodologies for design, construction and maintenance. 2 CAVERN GEOMETRY The cavern geometry will have to cope with the geological...

... Marikana Operations are located in the western limb of the Bushveld Complex of South Africa (Fig. 1). Large-scale fault structures compartmentalize the Marikana Operations, with the Rowland Shaft mining area being bounded by the Marikana Fault and Elandsdrift Fault Zone to the west and east respectively...

... ABSTRACT: Since several years, the demand for the storage of gas in rock salt caverns has changed from seasonal to high cycling operation. The new operation mode requires relatively fast pressure change rates in the cavern which in turn leads to temperature changes in the gas. The consequences...

... and to ensure the air-tightness of storage caverns. The completed water curtain system had been verified its hydraulic containment ability by the severe air-tightness test and had been launched into operation for three years. All the hydraulic potential, injection rate of water curtain boreholes, water curtain...

... ABSTRACT: Arenal Deeps is an Au mine located near Minas de Corrales, Uruguay, which was exploited via an open pit operation from 2004 until 2009 and underground since then, using both inclined room and pillar and transversal stoping methods. The progression of mining activities (down to ~320m...

... system under the long-term operation condition. Multi-channel borehole tests has been done to measure air and water permeability of the system, and also a borehole seismic exploration has been performed to characterize the excavation damaged zone surrounding the storage caverns. 1 INTRODUCTION...

... structures. The variation of stress state around the underground opening during excavation is a dynamic process and the stress state would be generally different from that under the static condition for the geometry particularly soon after blasting operation. One can not find any monitoring study...

... Abstract The Kaunertal hydropower plant is in full operation since 1965 and is still one of the largest storage power plants in Austria. In 1962, tunneling for the pressure shaft and surge tank was found to be more difficult than expected. The cause of these poor ground conditions, however...

... revealed that a landslide was occurring, loading the gallery lining. As stabilization of the slope was not an option for several reasons, it was decided to replace the gallery by a new one deeper inside the slope, which will be ready for operation in 2017. Thus the old gallery has to be kept in operation...

... for an exploratory tunnel, which will provide additional design and programming data for the excavation of the main tubes. Once completed, the exploratory tunnel will be used for drainage during construction and eventually as the service tunnel during operation. The exploratory tunnel could also carry power and data...

... normally drill and blast is the technique applied, it creates interfer- ences in the boring operation resulting in machine downtimes (Holen, 1998). Extra cost in drilling equip- ment and workers with special drill and blast skills has to be considered. From the authors opinion it should be considered...

... batters 10 m in height with 5 to 6 m wide berms giving an overall slope of 30 . Although now coal is mainly mined by open-pit mining operations, previously it was also extracted by under- ground operations. The low ratios of recuperation by the preceding underground mining allow the present surface mining...

... of ground excavations in urban areas there is a growing trend to utilize explo- sives with advanced methods of work, that involve the successive phases of careful project planning, detailed rock mass characterization, data acquisition while drilling, sophisticated operational design, accurate explosive...

... a commercial code, FLAC3D. As a part of a feasibility study on the storage efficiency of a rock cavern, the operations of the rock cavern type and the above-ground type thermal energy storage systems were simulated for a period of ten consecutive years; the dominant heat transfer mechanism was assumed...

... mixture rock anchor rock strengthening Juankoski Canal drill hole kareg consulting engineer injection abutment bench height Anchor packer Reservoir Characterization operation Bridge rock surface foundation intraplast injection work Rock Engineering and Rock Mechanics: Structures...