Drift Degradation Analysis.

Nieder-Westermann, G. H.

Technical Information Center Oak Ridge Tennessee

关键词: Radioactive waste disposal;    Rock falls;    Computerized simulation;    Undergound storage;    Validation;   

RP-ID  :  DE2005850431

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The outputs from the drift degradation analysis support scientific analyses, models, and design calculations, including the following: Abstraction of Drift Seepage; Seismic Consequence Abstraction; Structural Stability of a Drip Shield Under Quasi-Static Pressure; and Drip Shield Structural Response to Rock Fall. This report has been developed in accordance with Technical Work Plan for: Regulatory Integration Modeling of Drift Degradation, Waste Package and Drip Shield Vibratory Motion and Seismic Consequences (BSC 2004 (DIRS 171520)). The drift degradation analysis includes the development and validation of rockfall models that approximate phenomenon associated with various components of rock mass behavior anticipated within the repository horizon. Two drift degradation rockfall models have been developed: the rockfall model for nonlithophysal rock and the rockfall model for lithophysal rock. These models reflect the two distinct types of tuffaceous rock at Yucca Mountain. The output of this modeling and analysis activity documents the expected drift deterioration for drifts constructed in accordance with the repository layout configuration (BSC 2004 (DIRS 172801)).