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Field Investigations for Seismic Effects on Mechanical and Geohydrologic Response of Underground Structures in Jointed Rock

by Simon M. Hsiung, Cent for Nuclear Waste Regulatory, Analyses, San Antonio, United States,
Asadul H. Chowdhury, Cent for Nuclear Waste Regulatory, Analyses, San Antonio, United States,
Jacob Philip, Cent for Nuclear Waste Regulatory, Analyses, San Antonio, United States,
Steve D. McKinnon, Cent for Nuclear Waste Regulatory, Analyses, San Antonio, United States,
Billy W. Vanzant, Cent for Nuclear Waste Regulatory, Analyses, San Antonio, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991

Abstract:

An exploratory Seismic Rock Mechanics research program has been initiated by the U.S. Nuclear Regulatory Commission at the Center for Nuclear Waste Regulatory Analyses (CNWRA) to study repository response due to repetitive dynamic loadings. This research project has the twin focus of understanding the key parameters affecting repository performance under repeated seismic loadings and evaluating current capability for calculating such effects. As a part of this research, an extensive instrumentation program has been undertaken which is aimed at generating a reliable data set for a particular site for evaluating analytical methods for simulation of the effects of seismic activities. This paper discusses in detail the selection of the site for the field investigations and the field instrumentation program implemented in Lucky Friday Mine to study seismic effects on the mechanical response of underground mine facilities and geohydrologic response of jointed and fractured rocks. Also included is discussion on the proposed data acquisition system.

Subject Headings: Seismic tests | Field tests | Seismic effects | Dynamic loads | Underground structures | Rock mechanics | Radioactive wastes

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