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Plastic zone range of a roadway considering the creep effect
Haidong Chen1,2,3, Xiangjun Chen4,5,6, Zhaofeng Wang1
1School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, Henan, China.
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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