Research Article
Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining
Table 1
Rockburst risk indexes of strip coal pillar.
| Index | Risk classification standard | No rockburst tendency | Medium rockburst tendency | Strong rockburst tendency |
| Medium stiffness ratio of the elastic and plastic zone, k | | | | Plastic zone width ratio, | | | | Elastic deformation index of the core zone, | | | |
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