Accession Number:

ADA172489

Title:

Recovery of MILL RACE Ground Motion Canisters and Examination of Canister Emplacement.

Descriptive Note:

Technical rept. 1 Oct 82-31 May 83,

Corporate Author:

PHYSICS APPLICATIONS INC LOS ANGELES CA

Personal Author(s):

• Vincent,Coye T.
• Cheeseborough,John C.

Report Date:

1983-05-31

Pagination or Media Count:

54.0

Abstract:

The canisters used for the strain-path project of the MILL RACE program were excavated, along with their emplacement grout, to find out why the grout had often risen to higher levels than those expected from borehole and canister geometry, and because some large variations in ground motion measurements from adjacent canisters could have been due to faulty canister installation. In most cases it was found that the canisters were embedded only partly in grout, and, in 11 of the 24 holes, half or more of the canisters surface proved to be grout-free dirt had fallen from the sidewalls to the bottoms of boreholes before or during grouting. However, no significant correlation was found at Applied Theory, Inc. between the degree of grouting and anomalies in ground-motion records.

Descriptors:

• *GROUT
• *STRAIN GAGES
• *CANISTERS
• MEASUREMENT
• THEORY
• UNDERGROUND EXPLOSIONS
• NUCLEAR EXPLOSION TESTING
• GROUND MOTION
• BOREHOLES
• SURFACES
• INSTALLATION
• EMPLACEMENT
• GEOMETRY
• BOTTOM

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE