Spall Formation in Solution Mined Storage Caverns Based on a Creep and Fracture Analysis

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  • Spall Formation in Solution Mined Storage Caverns Based on a Creep and Fracture Analysis Book Detail

  • Author :
  • Release Date : 2000
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  • Pages : 8
  • ISBN 13 :
  • File Size : 61,61 MB
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Spall Formation in Solution Mined Storage Caverns Based on a Creep and Fracture Analysis by PDF Summary

Book Description: Because of limited direct observation, understanding of the interior conditions of the massive storage caverns constructed in Gulf Coast salt domes is realizable only through predictions of salt response. Determination of the potential for formation of salt spans, leading to eventual salt falls, is based on salt creep and fracture using the Multimechanism-Deformation Coupled Fracture (MCDF) model. This is a continuum model for creep, coupled to continuum damage evolution. The model has been successfully tested against underground results of damage around several test rooms at the Waste Isolation Pilot Plant (WIPP). Model simulations, here, evaluate observations made in the Strategic Petroleum Reserve (SPR) storage caverns, namely, the accumulation of material on cavern floors and evidence of salt falls. A simulation of a smooth cavern wall indicates damage is maximum at the surface but diminishes monotonically into the salt, which suggests the source of salt accumulation is surface sluffing. If a protuberance occurs on the wall, fracture damage can form beneath the protuberance, which will eventually cause fracture, and lead to a salt fall.

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