Table 3 The limit caving distance of supporting coal pillar varies with the width of supporting coal pillar.
Setting width of supporting coal pillar a/m | Ultimate caving distance of supporting coal pillar Lc/m |
|---|---|
4 | 13.37 |
4.5 | 14.52 |
5 | 15.6 |
5.5 | 16.64 |
Setting width of supporting coal pillar a/m | Ultimate caving distance of supporting coal pillar Lc/m |
|---|---|
4 | 13.37 |
4.5 | 14.52 |
5 | 15.6 |
5.5 | 16.64 |