... 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...

... 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...

... 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...

... natural gas storage cavern initiation solid waste management rapid rollover excavation Earthquake rock mass Reservoir Characterization Situ Investigation AE energy amplitude tunnel Indicator real time system frequency acoustic emission experiment schematic view small-scale...

... (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) and 11 m (width). The paper describes...

... Siltstone cavern roof interbedded sandstone engineering consultant bedding plane sidewall sandstone mingtan power cavern Fault Zone deformation Reservoir Characterization pretreatment stability rock mass cross section cavern transformer cavern excavation jointed sandstone...

... Fanelli,M., Favro,R., Fornero,I., Giuseppetti,G., Mazza,G. & Paolina, R. 1986. Numerical Analysis to iden- tify the unknown load distribution around a power tunnel lining. K.Sa- ari (ed Large rock caverns, p. 291-)06. N.Y., Pergamon Press. Mostkov,V.M., Orlov,V.A., Stepanov, P.D., Khechinov,Yu.E. & Yufin...

... 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 become larger in bolts during construction. Some measures are needed to confine the stress...

...Rock Mechanics and Power Plants, Romana (ed.) e 1988Balkema, Rotterdam.ISBN9061918278 A coupled boundary element-characteristics method for elasto-plastic analysis of rock caverns K.Sugawara & T.Aoki Kumamoto University.Japan Y.Suzuki Tokyo Electric Power Services, Japan ABSTRACT: A hybrid method...

... by hydraulic transient, the total level variation range in the tailrace surge chamber of underground power sta- tion will be up to 50-70m. Probably, this will make the surge chamber larger than the main powerhouse cavern. In some pumped storage power stations to be constructed, the conventional tailrace surge...

... stratigraphy convergence crystalline limestone Upstream Oil & Gas marly clay muela power plant pillar cavern gallery access tunnel excavation work Reservoir Characterization information discontinuity excavation fracture tunnel construction limestone geological mapping...

... underground scheme began way back in 1973 when the construction of buildings, roads and other infrastructures in three villages namely Chimakothi, Tsimalakha and Chukha located on the banks of Wangchu river was taken up. Work on the diversion dam and the major underground structures viz., power house cavern...

... power plant main cavern calculation Reservoir Characterization stability side wall cavern failure mode ground stress displacement rock bolt shotcrete shotcrete rock mass underground power plant Artificial Intelligence strength shotcrete layer plane sequence Excavation Sequence...

...Rock Mechanics and Power Plants, Romana fed) e 19BBBs/kema, Rotterdam./SBN906191827B Finite-element stress analysis in underground powerhouse-cavern and support measures design E.C.Kalkani Civil Engineering Department, National Technical University, Athens, Greece ABSTRACT:The fini te-element...

... 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...