Support Scheme Optimization of Large-Section and Soft-Rock Roadway in Tunlan Mine

Yun Bing Hou; Zhen Liang Gao; Hui Yu; Ang Liu; Wen Ke Zhang

doi:10.4028/www.scientific.net/AMR.962-965.984

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Study of the Assessment Method for Risk Matrix in Large Mining Steel Structure Large Steel Structure
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Study on Influence of Rock Strength on Anchorage Performance of Resin Anchored Bolts
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Study on Parameters of Gas Extraction in Spontaneous Combustion in Goaf and Comprehensive Prevention Process of Gas in Hongmiao Mine
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Support Scheme Optimization of Large-Section and Soft-Rock Roadway in Tunlan Mine
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 962-965Support Scheme Optimization of Large-Section and...

Support Scheme Optimization of Large-Section and Soft-Rock Roadway in Tunlan Mine

Abstract:

The haulage roadway of Face 12501 of Tunlan mine was a large-section and soft-rock roadway, and its deformation was very large, so the original support system could not satisfy the support demands. Three optimization schemes were proposed according to the geological conditions of the roadway, and the schemes were simulated by FLAC3D. The results showed that reducing the row & line space was not a good way to improve the supporting effect, however, it would effectively reduce the maximum stress of surrounding rocks and control the development of plastic zones by using long bolts instead of anchor cables, the maximum stress was reduced from 16.5MPa to13.9MPa, and the roof’s plastic damage range was reduced from 2.8m to 1.5m. The supporting effect is significant, and it could maintain the roadway’s stability effectively.

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Periodical:

Advanced Materials Research (Volumes 962-965)

Pages:

984-987

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.962-965.984

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Online since:

June 2014

Authors:

Yun Bing Hou, Zhen Liang Gao, Hui Yu*, Ang Liu, Wen Ke Zhang

Keywords:

FLAC3D Numerical Simulation, Long Bolt, Soft Rock Roadway, Support Optimization

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* - Corresponding Author

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