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2013•Applied Mechanics and MaterialsOpen access

Research to the Influence of Bolt Direction on the Surrounding Rock

Yu Zhao, Dan Feng Lu, Yao Chen

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Abstract

Bolt design has an important role to give full play to the effect of bolt support and ensure the roadway safety. Based on numerical simulation by ANSYS software, stress - strain is no longer as the analysis object in the study, but creating the paths mapped equivalent plastic strain to observe the changes in the plastic zone. This paper studies the influence of bolt direction on the surrounding rock, and proposes a reasonable range of support direction to provide a reference for the actual bolt. The result has shown that the large oblique bolt results in the equivalent plastic strain increasing and it is not conducive to control the deformation of the surrounding rock. The best supporting direction is from-30 ° to 30 °.

About this research paper

What this paper is about

Bolt design has an important role to give full play to the effect of bolt support and ensure the roadway safety. Based on numerical simulation by ANSYS software, stress - strain is no longer as the analysis object in the study, but creating the paths mapped equivalent plastic strain to observe the changes in the plastic zone. This paper studies the influence of bolt direction on the surrounding rock, and proposes a reasonable range of support direction to provide a reference for the actual bolt. The result has shown that the large oblique bolt results in the equivalent plastic strain increasing and it is not conducive to control the deformation of the surrounding rock. The best supporting direction is from-30 ° to 30 °.

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Available abstract

Bolt design has an important role to give full play to the effect of bolt support and ensure the roadway safety. Based on numerical simulation by ANSYS software, stress - strain is no longer as the analysis object in the study, but creating the paths mapped equivalent plastic strain to observe the changes in the plastic zone. This paper studies the influence of bolt direction on the surrounding rock, and proposes a reasonable range of support direction to provide a reference for the actual bolt. The result has shown that the large oblique bolt results in the equivalent plastic strain increasing and it is not conducive to control the deformation of the surrounding rock. The best supporting direction is from-30 ° to 30 °.

Key concepts: Research Object, Structural engineering, Deformation (meteorology), Oblique case, Anchor bolt, Geotechnical engineering, Stress (linguistics), Engineering

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