Research Article
Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
Table 2
Characteristics of the working resistance of working face 880.
| | | Line | Working resistance (kN) | | Average value | Standard deviation | Maximum value |
| | Maximum resistance | Head position
Middle position
End position | 10111.9
11955.6
11156.3 | 1746.5
1918.5
2442.3 | 11654.1
12675.4
12280.8 | | Average | 11074.5 | 2035.7 | 12203.5 | | Time-weighted mean resistance | Head position
Middle position
End position | 11008.0
11864.0
11653.8 | 2372.2
1844.8
2353.5 | 11974.7
12389.5
12030.8 | | Average | 11508.5 | 2190.2 | 12131.6 |
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