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Determination of in situ state of stress at the Spent Fuel Test-Climax site, Climax Stock, Nevada Test Site

Open-File Report 82-458

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Abstract

Determination of the in situ state of stress at the site of the Spent Fuel Test--Climax, using the U.S. Bureau of Mines overcore method, indicates principal stress magnitudes of 11.6 MPa, 7.1 MPa, and 2.8 MPa. The bearing and plunge of the maximum and minimum principal stress components are, respectively: N. 56? E., 29? NE; and N. 42? W., 14? NW. The vertical stress magnitude of 7.9 MPa calculated from the overcore data is significantly less than expected from overburden pressure, suggesting the stress field is influenced by local or areal geologic factors. Results from this investigation indicate (1) the stress state at the Spent Fuel Test--Climax site deviates significantly from a gravitational stress field, both in relative stress magnitudes and in orientation; (2) numerical modeling will not realistically simulate the near-field response of the Spent Fuel Test--Climax site if gravitational and (or) horizontal and vertical applied stress boundary conditions are assumed; and (3) substantial stress variations may occur spatially within the stock.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Determination of in situ state of stress at the Spent Fuel Test-Climax site, Climax Stock, Nevada Test Site
Series title:
Open-File Report
Series number:
82-458
Edition:
-
Year Published:
1982
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
i, 57 p. ill., maps ;28 cm.