Numerical Simulation on the Effect of Compound Roof Separation Position on Bolting Performance

Ai Qing Liu; Jian Zhang; Peng Cheng; Yu Hai Zhang

doi:10.4028/www.scientific.net/AMR.953-954.1638

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Simulation and Analysis of Annual Dynamic Air Conditioning Load for Multi-Zone Building
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Study of Low Density and High Strength Slag MTC System
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Experimenting Mechanism and Material Optimization of Fe-Ni Foam Metal about Suppressing Gas Explosion and Propagation
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 953-954Numerical Simulation on the Effect of Compound...

Numerical Simulation on the Effect of Compound Roof Separation Position on Bolting Performance

Abstract:

Prestress is a key parameter in bolting, while the cohesive force of layers in the compound roof strata is low and prone to separation, causing the prestress proliferation very poor. With the method of numerical simulation analysis,the location of separation in compound roof to affect the performance of bolting support was researched. It is concluded the roof separation in the edge of anchorage zone, the prestress field superpose, but is away from the deep surrounding rock and shows poor stability,however the role of cable can make up for the defect of rockbolts support. It has been found the highly prestressed strength bolting system adapts to the compound roof.

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Periodical:

Advanced Materials Research (Volumes 953-954)

Pages:

1638-1642

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.953-954.1638

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Cite this paper

Online since:

June 2014

Authors:

Ai Qing Liu*, Jian Zhang, Peng Cheng, Yu Hai Zhang

Keywords:

Compound Roof, Pre-Stress, Roof Separation

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* - Corresponding Author

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