Analysis of alternatives for using cable bolts as primary support at two low-seam coal mines

Esterhuizen, Gabriel S.; Tulu, Ihsan B.

doi:10.1016/j.ijmst.2015.11.005

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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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Analysis of alternatives for using cable bolts as primary support at two low-seam coal mines

Jan 2016
By Esterhuizen, Gabriel S. ; Tulu, Ihsan B.
http://dx.doi.org/10.1016/j.ijmst.2015.11.005
Source: Int J Min Sci Technol. 26(1):23-30.

[PDF-1.66 MB]

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Details:

Alternative Title:

Int J Min Sci Technol
Personal Author:

Esterhuizen, Gabriel S. ; Tulu, Ihsan B.

Esterhuizen, Gabriel S. ; Tulu, Ihsan B. Less -
Description:

Cable bolts are sometimes used in low-seam coal mines to provide support in difficult ground conditions. This paper describes cable bolting solutions at two low-seam coal mines in similar ground conditions. Both mines used support systems incorporating cable bolts as part of the primary support system. Two original cable bolt based support systems as well as two modified systems are evaluated to estimate their ability to prevent large roof falls. One of the support systems incorporated passive cable bolts, while the other used pre-tensioned cable bolts. The results and experience at the mines showed that the modified systems provided improved stability over the original support systems. The presence of the cable bolts is the most important contribution to stability against large roof falls, rather than the details of the support pattern. It was also found that a heavy steel channel can improve the safety of the system because of the 'sling' action it provides. Additionally, the analysis showed that fully-grouted rebar bolts load much earlier than the cable bolts, and pre-tensioning of the cable bolts can result in a more uniform distribution of loading in the roof.
Subjects:

[+]

Article Cable Bolt Coal Mining Numerical Modeling Roof Support
Source:

Int J Min Sci Technol. 26(1):23-30.
Pubmed ID:

27722019
Pubmed Central ID:

PMC5053766
Document Type:

Journal Article
Funding:

CC999999/Intramural CDC HHS/United States ; United States Intramural CDC/United States

CC999999/Intramural CDC HHS/United States ; United States Intramural CDC/United States Less -
Volume:

26
Issue:

1
Collection(s):

CDC Public Access
Main Document Checksum:

[+]

urn:sha256:67a46c6dd639cba02daf2d6f50246d76ea6197acf87c1cc1f6ebf213e120b75a
Download URL:

https://stacks.cdc.gov/view/cdc/41721/cdc_41721_DS1.pdf
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