Table 3 Statistics of the peak value of advanced bearing stress and elastic energy during the mining process of the 1802 working face.
Mining length (m) | Stress peak (Mpa) | Advanced distance of stress peak | Elastic energy peak value (KJ/m3) | The advanced distance of the elastic energy peak value (m) |
|---|---|---|---|---|
100 | 31.71 | 10 | 189.28 | 10 |
150 | 37.11 | 10 | 242.00 | 10 |
200 | 36.56 | 10 | 246.04 | 10 |
250 | 37.06 | 10 | 248.96 | 10 |
300 | 37.88 | 10 | 269.36 | 10 |
600 | 38.62 | 10 | 269.36 | 10 |
1000 | 36.80 | 20 | 240.44 | 10 |
1400 | 36.38 | 20 | 234.96 | 20 |
1800 | 38.75 | 20 | 252.51 | 10 |
2200 | 36.28 | 20 | 217.06 | 10 |
2600 | 35.79 | 20 | 223.55 | 10 |
3000 | 39.40 | 20 | 253.05 | 10 |
3600 | 34.75 | 20 | 200.21 | 20 |
3850 | 34.58 | 20 | 210.89 | 10 |
3900 | 35.48 | 20 | 214.72 | 10 |
3950 | 35.42 | 20 | 202.11 | 20 |
4000 | 34.70 | 20 | 197.47 | 20 |
4050 | 33.62 | 20 | 192.03 | 20 |
4100 | 34.88 | 20 | 201.04 | 20 |
