Support design of main retracement passage in fully mechanised coal mining face based on numerical simulation
Publié en ligne: 15 déc. 2021
Pages: 553 - 560
Reçu: 16 juin 2021
Accepté: 24 sept. 2021
© 2021 Yalong Li et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Statistical table of roof settlement of working face
Change of roadway wall stress in main retracement passage of working face/(Mpa) |
Distance from the main retracement passage (m) |
50 |
40 |
30 |
20 |
10 |
0 |
Mining help |
The vertical stress |
4.61 |
10.02 |
11.41 |
11.05 |
2.36 |
- |
Maximum principal stress |
9.68 |
10.36 |
11.80 |
11.05 |
2.43 |
- |
Minimum principal stress |
3.53 |
3.77 |
4.31 |
4.11 |
0.79 |
- |
Non-mining side |
The vertical stress |
8.99 |
9.35 |
11.06 |
12.36 |
11.65 |
3.94 |
Maximum principal stress |
9.04 |
9.38 |
11.09 |
12.43 |
11.75 |
4.29 |
Minimum principal stress |
3.32 |
3.44 |
4.11 |
4.11 |
4.34 |
1.50 |