In situ stress at the Lucky Friday Mine (in four parts) : 2. Analysis of overcore measurement from 5300 level

Whyatt, J. K. (Jeff K.); Jenkins, F. M. (F. Michael); Larson, Mark K.

Back to Previous Page

- Add this to...
- Twitter
- Facebook
- Google Bookmarks
- LinkedIn

In situ stress at the Lucky Friday Mine (in four parts) : 2. Analysis of overcore measurement from 5300 level

Published Date:

1995

Series:

Report of investigations (United States. Bureau of Mines) ; 9560

Language:

English

[PDF-2.98 MB]

Details:

Personal Author:

Whyatt, J. K. (Jeff K.) ; Jenkins, F. M. (F. Michael) ; Larson, Mark K. ;

Corporate Authors:

United States. Bureau of Mines.

Description:

"The U.S. Bureau of Mines conducted an overcore stress measurement on the 5300 level of the Lucky Friday Mine, Mullan, Idaho, to investigate the stress regime around an experimental stope in a rock-burst-prone mine. The result indicated a stress field with unexpected magnitude and orientation [maximum principal stress equals approx. 135 MPa (19,600 psi) oriented S 80 deg W]. An unusual amount of rock-burst activity was encountered during subsequent excavation. A careful review of the overcore data suggested the overcore strain measurements were valid. Moreover, concentrated rock-burst activity suggested that the measured stress field did exist, but was localized and therefore did not represent the farfield in situ stress field." - NIOSHTIC-2

NIOSHTIC no. 20024016

Subject:

[+]

Document Type:

Report

Place as Subject:

Idaho ; Lucky Friday Mine, Idaho ;

Collection(s):

National Institute for Occupational Safety and Health

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

No Related Documents.

You May Also Like:

In situ stress at the Lucky Friday Mine (in four parts) 4, Characterization of mine in situ stress field

Personal Author:

Whyatt, J. K. (Jeff K.); Williams, T. J.; Blake, W.;

Corporate Authors:

United States. Bureau of Mines.

Published Date:

1995

Series:

Report of investigations (United States. Bureau of Mines) ; 9582

Description:

"Researchers at the U.S. Bureau of Mines collected and analyzed overcore measurements and other indicators of in situ stress characteristics at the Lucky Friday Mine, Mullan, Idaho. An analysis of these data revealed that significant local variations...

File Type:

[PDF - 1.44 MB]
In situ stress at the Lucky Friday Mine (in four parts) 3. Reanalysis of overcore measurements from the Star Mine

Personal Author:

Whyatt, J. K. (Jeff K.); Beus, Michael J.; Larson, Mark K.;

Corporate Authors:

United States. Bureau of Mines.

Published Date:

1995

Series:

Report of investigations (United States. Bureau of Mines) ; 9567

Description:

"U.S. Bureau of Mines researchers reviewed an in situ stress estimate developed from measurements of overcore strain taken at test sites on the 7300 and 7500 levels of the Star Mine near Mullan, Idaho. Although the field measurements of overcoring st...

File Type:

[PDF - 1.99 MB]
In situ stress at the Lucky Friday Mine (in four parts) : 1. Reanalysis of overcore measurements from 4250 level

Personal Author:

Whyatt, J. K. (Jeff K.); Beus, Michael J.;

Corporate Authors:

United States. Bureau of Mines.

Published Date:

1995

Series:

Report of investigations (United States. Bureau of Mines) ; 9532

Description:

"U.S. Bureau of Mines researchers reviewed an in situ stress investigation conducted in 1979 at a test site on the 4250 level of the Lucky Friday Mine, Mullan, ID. Although the field measurements of overcore strain were found to be useful, significan...

File Type:

[PDF - 2.23 MB]
Mechanics Of A Large, Strain-Type Rock Burst And Design For Prevention

Personal Author:

White, Brian G.; Williams, Theodore J.; Whyatt, Jeffrey K.;

Published Date:

0/1/1900

Description:

Detailed mapping and examination of the site of a large rock burst at the Lucky Friday Mine, Mullan, ID, demonstrated conclusively that damage was caused by a splitting and buckling failure mechanism initiated by separation of rock into layers along ...

File Type:

[PDF - 277.87 KB]
Rock mechanics investigations at the Lucky Friday Mine (in three parts) : 3. Calibration and validation of a stope-scale, finite-element model

Personal Author:

Pariseau, W. G.; Whyatt, J. K.; Williams, Theodore Joseph, 1923-;

Corporate Authors:

United States. Bureau of Mines

Published Date:

1992

Series:

Report of investigations (United States. Bureau of Mines) ; 9434

Description:

"The present study uses rock deformation measurements to validate and calibrate a geomechanical model of the experimental Lucky Friday underhand longwall (lful) stope on the 5,100-ft level of the Lucky Friday Mine, Mullan, Idaho. This model suggested...

File Type:

[PDF - 3.28 MB]