... Upstream Oil & Gas back analysis natural gas storage cavern Sakurai application Artificial Intelligence displacement reduction factor rock mass non-elastic strain Reservoir Characterization inhomogeneous zone cavern excavation strain distribution excavation iterative...

... ABSTRACT: When we adopt so-called CAES (Compressed Air Energy Storage system; a system of gas turbine power generator with the combination of compressed air storage in rock caverns) for leveling the electric load in Japan, the storage caverns are required to be unlined for reducing...

... quarries concerns good quality rock masses. In most cases, underground excavations are in fact supported by natural structures (pillars or barrier pillars), obviously when more than one void is present (e.g. the Carrara marble basin). In some particular cases, single openings are considered as caverns...

... displacement minor principal stress right wall Upstream Oil & Gas sidewall excavation reservoir geomechanics powerhouse cavern stress analysis MPa Reservoir Characterization cavern contour scale 1 tensile-stress area principal stress consecutive excavation stage principal...

... Reservoir Characterization Upstream Oil & Gas cavern service tunnel metals & mining displacement dimension reservoir geomechanics sylvinite Thickness pressure tunnel Artificial Intelligence overstressed zone underground excavation horizontal stress rock mass topography...

... Reservoir Characterization AE frequency rock tank site rock specimen real time system acoustic emission characteristic rock mass Downstream Oil & Gas Institute storage cavern granodiorite cavern rock cavern excavation fracture loosening decrease ratio Indicator...

... storage caverns, compressed air energy storage and high level nuclear waste repository are of extreme importance during construction and also after completion. The behaviour of loosened zone around rock caverns play important role on the stability of caverns, and it is quite important to evaluate...

... power stations in Arenoso (underground) and Aguacate (surface). The Arenoso power Station is a relatively small plant with two Francis vertical units - with a total design discharge of 17,6 m3/s for an average gross head of 145 m. The main dimensions of the cavern are 33 m (length), 22 m (heigth...

... ABSTRACT Mingtan Power Cavern is one of the largest power caverns in Taiwan. The optimization of orientation and shape of the cavern was determined from geology and stress analysis as well as construction considerations. Bedding parallel clay seams daylighting in the cavern roof were treated...

... into operation. water management Thickness Reservoir Characterization cavern inspection basalt numerical analysis concrete lining tunnel lining Rotterdam lining construction operation high rock pressure Upstream Oil & Gas Rock mechanics numerical simulation rock condition tunnel...

... in the past. This paper introduce an another method, which consider the changing of stress in the crane beam and bolts during construction of the excavation and how the loaded rock bolt crane beam influences the stability of the rock mass around the cavern. Both calculation and practic proved: that the stress...

..., and it is discussed that this method is a powerful an~ accurate method in evaluating the extent of the plastic region around rock caverns, which is of prime importance for the construction of rock caverns. Then some typical examples, including underground power house cavern, are solved by this method in order...

... cavern. In some pumped storage power stations to be constructed, the conventional tailrace surge chamber will also become a very huge one since the installed elevation of the turbine is very low, and variation range of levels is relatively wide. Table 1 is a list of dimensions of the conventional...

... ABSTRACT: A detailed geological mapping of the stratigraphy, the techtonic and the structure of the cavern for La Muela power plant has been performed during the excavation works. This has been helpful in completing and refining the data from previous investigations. Fifty seven stratigraphic...

... renewable energy shear zone rock bolt excavation diversion dam Power Tunnel gneiss chukha hydroelectric project cavern house cavern schist Crown slide zone tunnel Reservoir Characterization right side wall Face IV ßood New Delhi cavity ABSTRACT: The first two Pelton...

... ABSTRACT: This paper studies the problems of stability and supports of an underground power plant which consists of a qroup of big caverns. The power plant is designed to be located in limestone, where three faults and two clay partings pass through. Due to the complex conditions of rocks...

... ABSTRACT: The finite-element stress analysis of the Thissavros powerhouse cavern on the Nestos river in Greece is presented, along with a complete design of the support measures on the sidewalls and roof of the cavern. The analysis indicates the length of the prestressed anchors, the prestress...

... Summary The Tokyo Electric Power Co., Inc. is now in the process of excavating a large cavern--33.5 m wide, 51 m high, and 160 m long--to set a 1,050 MW pumped-storage power plant 400 m under the ground surface. The cross section of the cavern is horseshoe-shaped, the first time...

... and scale effects connected to in situ deformability tests are also mentioned. Finally, a proposal of methodology for caverns in rock, mainly based on the use of LNEC test techniques, is expounded by the author. ZUSAMMENFASSUNG: In dem eingereichten Referat werden einige der juengsten Ergebnisse von...

... SUMMARY: Control measurements are used not only in working mines but also as a practical method of assessing the stability of rock caverns. The assumption upon which stability calculations are based can be checked using the results of these measurements. It is explained with the aid...