Research Article
A Study of Fractal Deep-Hole Blasting and Its Induced Stress Behavior of Hard Roof Strata in Bayangaole Coal Mine, China
Table 1
#311103 working face strong pressure phenomena statistical table.
| | Number | Date | Mining distance (m) | Distance from the last strong pressure (m) |
| | 1 | 2017.04.28 | 210.3 | | | 2 | 2017.06.01 | 453.4 | 243.1 | | 3 | 2017.06.04 | 474.2 | 20.8 | | 4 | 2017.06.22 | 558.4 | 84.2 | | 5 | 2017.06.26 | 601.2 | 42.8 | | 6 | 2017.06.29 | 634.5 | 33.3 | | 7 | 2017.07.01 | 654.9 | 20.4 | | 8 | 2017.07.04 | 698.7 | 43.8 | | 9 | 2017.07.12 | 756.1 | 57.4 | | 10 | 2017.07.23 | 828.3 | 72.2 | | 11 | 2017.07.29 | 876.2 | 47.9 | | 12 | 2017.08.03 | 908.8 | 32.6 | | 13 | 2017.08.10 | 964.2 | 55.4 | | 14 | 2017.08.23 | 1045.7 | 81.5 | | 15 | 2017.08.29 | 1134.0 | 88.3 | | 16 | 2017.09.02 | 1154.4 | 20.4 | | 17 | 2017.09.17 | 1331.3 | 176.9 | | 18 | 2017.09.30 | 1444.6 | 113.3 | | 19 | 2017.10.06 | 1513.9 | 69.3 | | 20 | 2017.10.08 | 1533.4 | 19.5 | | 21 | 2017.10.18 | 1589.1 | 55.7 | | 22 | 2017.10.28 | 1736.5 | 147.4 | | 23 | 2017.10.30 | 1771.1 | 34.6 | | 24 | 2017.11.15 | 1955.4 | 184.3 | | 25 | 2017.11.19 | 1998.6 | 43.2 | | 26 | 2017.11.21 | 2010.6 | 12.0 | | 27 | 2017.11.28 | 2088.4 | 77.8 |
|
|
