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- W2384459322 abstract "Aiming at analyses of surrounding rock stability of cavern group and seepage field characteristics at Dalian water-tight underground oil storage,firstly,based on regression analysis of in-situ stress testing data,initial in-situ stress field inversion is conducted with functions defined with program language Fish.Secondly,after three-dimensional random joint networks with different sizes are generated with 3DEC,a new method of calculating the anisotropy permeability is proposed.Finally,stress field and displacement field of surrounding rocks are gained using coupled fluid and mechanical excavation calculations.Based on point safety factor,whose criterion is the Mohr-Coulomb one with the tensile strength,cavern group stability is quantitatively evaluated considering parallel and vertical bedding planes owing to different materials characteristics.Referring to ideas from abroad,seepage field is analyzed by groundwater table and vertical hydraulic gradient,respectively.Results indicate that point safety factor is 1.95–2.00 for the materials in the direction perpendicular to bedding planes,while 1.02–1.25 in the direction parallel to bedding planes.With the artificial water curtain system comprised of water tunnels and holes,the groundwater drops 3–5 m during construction period,and the distance between groundwater table to cavern crown is 55 m.The average vertical hydraulic gradient is greater than 1.0 around the caverns,which meets the design specification and sealing requirement." @default.
- W2384459322 created "2016-06-24" @default.
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- W2384459322 date "2012-01-01" @default.
- W2384459322 modified "2023-09-24" @default.
- W2384459322 title "ANALYSES OF SURROUNDING ROCK STABILITY OF CAVERN GROUP AND SEEPAGE FIELD AT DALIAN UNDERGROUND OIL STORAGE" @default.
- W2384459322 hasPublicationYear "2012" @default.
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