Graduate Thesis Or Dissertation
 

A Framework for Analyzing Debris Removal Operations Using Discrete Event Simulation

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/gf06g9153

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  • Debris generated after a disaster event must be disposed efficiently for community recovery. This is a significant operation that accounts for up to 27% of the total recovery costs. Generally, debris removal takes place in two phases: the short-term relief phase, which involves debris removal immediately after a disaster to provide access for emergency operations; and the recovery phase, which requires debris removal for the long-term recovery of the community from the disaster. This research focuses on debris removal operations in the recovery phase. A Cascadia subduction zone earthquake of magnitude 9 in Oregon is estimated to produce one million or more dump truck loads of debris. Disposal of such large quantities of debris requires temporary debris management sites. These sites are locations where debris is stored, segregated, and reduced before the final disposal. This thesis provides a framework to analyze these logistical factors involved in debris removal operations, focusing on temporary debris management sites and equipment fleets engaged in the operations. The framework utilizes HAZUS-MH for debris estimation, ArcGIS for identification of feasible location for temporary debris management sites, and jStrobe for simulating the debris removal operation. The developed framework is demonstrated in two coastal cities in Oregon: Astoria and Newport. The debris generated, temporary debris management sites, and equipment fleet configuration required for the debris removal operation for the two cities are identified. Emergency planners can use the developed framework to analyze the impact of logistical decision variables on the debris removal productivity and can thereby plan for optimizing the debris removal operations based on the expected post-disaster conditions.
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