Table 5 Theoretical critical load values of rock burst occurrence in some coal mines.
From: Roadway rock burst prediction based on catastrophe theory
Name of coal mine | Elastic modulus \(E({\text{GPa)}}\) | Poisson's ratio \(\mu\) | Uniaxial compressive strength \(\sigma_{{\text{c}}} ({\text{MPa)}}\) | Critical load values \(P_{{{\text{cr}}}} ({\text{MPa)}}\) | Ratio of critical load to compressive strength \(P_{{{\text{cr}}}} /\sigma_{{\text{c}}}\) | |
|---|---|---|---|---|---|---|
Xuan | MenkeqingMine | 0.35 | 0.32 | 28.01 | 10.51 | 0.38 |
Li | Huatai Mine | 0.29 | 0.34 | 1.41 | 1.15 | 0.82 |
Shennanao Mine | 0.8 | 0.38 | 5.93 | 3.63 | 0.61 | |
Xin'an Mine | 1.66 | 0.22 | 13.87 | 7.64 | 0.55 | |
Yuejin Mine | 2.46 | 0.36 | 15.21 | 10.09 | 0.66 | |
Bayan Gaole Mine | 2.22 | 0.28 | 28.57 | 13.69 | 0.48 | |
Zhao | Jixian Mine | 6.08 | 0.3 | 7.31 | 13.64 | 1.87 |
Du | Yizhouyao Mine | 2.29 | 0.243 | 26 | 12.86 | 0.49 |
Gao | Xinjulong Mine | 17.04 | 0.37 | 17.41 | 33.66 | 1.93 |
Dong | Wudong Mine | 1.71 | 0.32 | 13.82 | 7.76 | 0.56 |
Qi | Huating Mine | 5.32 | 0.37 | 12.4 | 15.28 | 1.23 |
Huafeng Mine | 8.33 | 0.35 | 22.6 | 24.68 | 1.09 | |
Sanjianhe Mine | 8.9 | 0.32 | 23.9 | 25.83 | 1.08 |
