Study on Damage Law of Raw Coal Based on Different Characterization Methods

<div>Damage variable curve based on residual deformation: (a) <i>D</i><sub><i>P</i></sub>(<i>i</i>) and (b) <i>D</i><sub><i>P</i>.</sub></div>

Advances in Civil Engineering

Figure 5: Study on Damage Law of Raw Coal Based on Different Characterization Methods 