Os evaporitos são rígidos, mas se deformam caso sejam submetidos a um diferencial de tensão ao longo do tempo. e físicas diferentes das demais rochas da crosta terrestre.
Estas rochas são constituídas por minerais salinos, e por este motivo possuem propriedades químicas. Na bacia de Santos existem grandes reservas de óleo leve abaixo de uma espessa camada de rochas evaporíticas. RESUMO: A presença de estruturas evaporíticas em bacias sedimentares proporcionam condições favoráveis para o acúmulo de hidrocarbonetos e aumentam a probabilidade de sucesso exploratório. The results obtained from the numerical simulations are compared with available experimental data for a rockfill material used in Xiaolangdi earth dam. It is shown that an appropriate modeling of wetting deformations requires a unified description of the interaction at least between the state of weathering, the stress state, the density and the rate of deformation. To quantify the state of weathering a so-called “solid hardness” is used in the sense of a continuum description.
Particular attention is paid to wetting deformation under different deviatoric loading states and pre-compactions. The present paper investigates the rheological properties of coarse grained rockfill materials using a hypoplastic constitutive model. Long-term deformations of rockfill dams can be related to the type of dam, the pre-compaction achieved during the construction of the dam, the history of loading events, the rheological properties of the rockfill material used, the seepage behavior caused by defects of the sealing, the interactions of the dam building with the foundation, and the hydrothermal phenomena of the stressed rockfill material.
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