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- W27532444 abstract "Rock mechanics tests are performed to determine in situ stress conditions and material properties of an underground rock mass. To design stable underground facilities for the permanent storage of high-level nuclear waste, determination of these properties and conditions is a necessary first step. However, before a test and its associated equipment can be designed, the engineer needs to know the range of expected values to be measured by the instruments. Sensitivity studies by means of finite element simulations are employed in this preliminary design phase to evaluate the pertinent parameters and their effects on the proposed measurements. The simulations, of two typical rock mechanics tests, the plate bearing test and the flat-jack test, by means of the finite element analysis, are described. The plate bearing test is used to determine the rock mass deformation modulus. The flat-jack test is used to determine the in situ stress conditions of the host rock. For the plate bearing test, two finite element models are used to simulate the classic problem of a load on an elastic half space and the actual problem of a plate bearing test in an underground tunnel of circular cross section. For the flat-jack simulation, a single finite elementmore » model is used to simulate both horizontal and vertical slots. Results will be compared to closed-form solutions available in the literature.« less" @default.
- W27532444 created "2016-06-24" @default.
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- W27532444 date "1986-04-01" @default.
- W27532444 modified "2023-09-26" @default.
- W27532444 title "Finite element simulations of two rock mechanics tests" @default.
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