Research Article
Sampling and Mechanical Testing of Backfill in Large Mined-Out Area
Table 1
Backfill drilling project list.
| | No. | Middle part | Location | Dip | Construction quantity |
| | GZK1 | -170 | Linked retaining wall at footwall | -35° | 17.2 m | | GZK2 | -230 | Trench retaining wall at footwall | 35° | 44.1 m | | GZK3 | -230 | 5# retaining wall | 45° | 21.8 m | | GZK4 | -170 | Linked retaining wall at hanging wall | -45° | 65.3 m | | In total | — | — | — | 148.4 m |
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