Nondestructive Testing Using Borehole and Surface Seismic Techniques to Evaluate Rock Mass Damage Zones

by P. P. Nelson, Univ of Texas at Austin, Austin, United States,
K. H. Stokoe, II, Univ of Texas at Austin, Austin, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991


A suite of seismic tests was performed at the U12g tunnel at the Nevada Test Site. The methods include borehole (crosshole and downhole) and surface (Rayleigh wave and refraction) tests. Results indicate that the different methods should be considered complimentary, and that seismic methods can sensitively evaluate magnitudes and variations of in situ rock mass stiffnesses. In particular, near-surface low velocity (damage) zones are delineated quite well with Rayleigh wave and downhole methods.

Subject Headings: Surface waves | Rayleigh waves | Wave velocity | Wave spectrum | Rock masses | Seismic waves | Seismic tests | Tunnels | Nevada | North Carolina | United States

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