Two-dimensional simulation of the thermomechanical response of project salt vault including the excavation sequence. Final report
Description: Based on comparisons of the present four-room sequential excavation calculational results with previous two-room simultaneous excavation results and the experimental results, the following may be concluded: (1) The sequence of excavation plays no role in overall deformation response of rooms and pillars, provided that sufficient time (approx. 6 months) lapse exists between the last excavation and the start of the heat source. (2) The assumption of a symmetry plane between Rooms 2 and 3 is valid in modeling the Project Salt Vault experiment. (3) In a realistic simulation, one should allow the creep deformations to occur on real time scale even during the period when no thermal source is active (e.g., between standard day 540 and standard day 806). In particular, reference is made to the two-room sensitivity calculation which was started at standard day 806. In that calculation the creep stain rates at day 806, and cumulative strains until day 806 were erroneous. However, the overall thermomechanical response was still in fairly good agreement with the experimental data. 7 figures.
Date: March 1, 1978
Creator: Wahi, H.K.; Maxwell, D.E. & Hofmann, R.
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