Cutting Roof Roadway Parameter Optimization Simulation Analysis

Abstract:

Contrast simulation analysis under different cutting distance between top lane, cut the top lane area stress state, according to different stress state analysis of the optimal cutting top lane spacing, so as to realize the optimization of cutting top lane setting parameters.Results show that due to the inhomogeneity of rock strength, the main roof breaking are mainly shear stress play a role, as a result, the vertical stress of roof fracture need conditions may be much smaller than mine pressure strength limit.Considering cutting top lane for the larger spacing, cutting the top coal lane area of stress concentration degree is higher, easy to cause impact danger, from this aspect to consider cutting the top lane spacing should be small as far as possible, but the spacing is too small and cut the top lane roadway of quantities will increase, at the same time has the potential to cut two top lane of the superposition of stress, high impact and increase the working face danger.

• Periodical: Applied Mechanics and Materials (Volume 741)
• Pages: 179-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.741.179
• Online since: March 2015
• Authors: Yan Min Shu*, Yong Li Liu
• Keywords: Cutting Roof Roadway, Numerical Simulation, Thin Coal Seam

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