Evaluation of in situ cemented backfill performance

Tesarik, D. R. (Douglas R.); Vickery, J. D.; Seymour, J. B.

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CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners. As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.

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Evaluation of in situ cemented backfill performance

1991
By Tesarik, D. R. (Douglas R.) ; Vickery, J. D. ; Seymour, J. B.
Series: Mining Publications

English

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Details:

Personal Author:

Tesarik, D. R. (Douglas R.) ; Vickery, J. D. ; Seymour, J. B.

Tesarik, D. R. (Douglas R.) ; Vickery, J. D. ; Seymour, J. B. Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"As part of its research program to investigate ways of improving resource recovery and reducing subsidence, researchers from the U.S. Bureau of Mines placed instruments in the b-north ore body of the Cannon Mine, Wenatchee, Washington, to monitor cemented backfill and rock deformation during mining. The vibrating-wire gauges proved to be reliable and versatile, and approximately half of the instruments are providing data after 2 years of use. A two-dimensional, finite- element model was used to analyze the Cannon Mine's multilevel bench cut-and-fill mining method and predict rock and backfill displacements. The model accurately predicted rock displacements, but the predicted and measured displacements in cemented backfill had a correlation coefficient near zero, indicting that the model should only be used to predict rock displacements and not backfill displacements. A finite-difference model was also used to evalute the stability of a cemented backfill pillar. Results can be used to conservatively predict backfill stresses, but on-site observations of pillar failures coupled with in situ measurements are needed to make more accurate predictions. An ongoing evaluation of the mining system has indicated that filling the primary stopes tight to the back with cemented backfill allowed these pillars to carry overburden loads soon after the cemented backfill was placed." - NIOSHTIC-2

NIOSHTIC no. 10009153
Subjects:

[+]

Ground Control (Mining). Mine Filling.
Series:

Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
Place as Subject:

Washington ; Washington (State) -- Wenatchee Region

Washington ; Washington (State) -- Wenatchee Region Less -
CIO:

National Institute for Occupational Safety and Health (NIOSH)
Pages in Document:

26 numbered pages
NIOSHTIC Number:

10009153
Resource Number:

RI-9360
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:53bab569d7329d3a4b7dcd81339e3667f6d84327116fff869e3323530896e3e413cedaf0efc7da4f074fa88d9eb26041d76028a282708262ef4400c93bc93b07
Download URL:

https://stacks.cdc.gov/view/cdc/10127/cdc_10127_DS1.pdf
File Type:

[PDF-3.01 MB]