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Abstract
The plastic zone range is an important parameter in the analysis of damage characteristics and the degree of damage to the rock surrounding a roadway. Based on the establishment of a plastic zone calculation model considering the creep effect, this paper obtains the characteristics of the change in the plastic zone damage range with time by solving the model. Additionally, the validity of the model is verified by field experiments. The research results can provide guidance for gas pressure measurement and gas drainage in coal mines.
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1 Henan Polytechnic University, School of Safety Science and Engineering, Jiaozuo, China (GRID:grid.412097.9) (ISNI:0000 0000 8645 6375); Henan Polytechnic University, Henan Key Laboratory of Coal Green Conversion, Jiaozuo, China (GRID:grid.412097.9) (ISNI:0000 0000 8645 6375); Collaborative Innovation Center of Coal Safety Production of Henan Province, Jiaozuo, China (GRID:grid.412097.9)
2 Henan Polytechnic University, School of Safety Science and Engineering, Jiaozuo, China (GRID:grid.412097.9) (ISNI:0000 0000 8645 6375)