Research Article
Analysis and Engineering Practice of Factors Affecting Top-Coal Recovery in a Large Dip Coal Seam
Table 10
Output of the working face from January to February 2019.
| | Coal caving modes | Production duration (days) | Working face advanced distance (m) | Theoretical coal output (t) | Actual output (t) | Recovery of top coal (%) |
| | “One cutting and one caving” with single-sequence caving | 25 | 80 | 251104 | 227284 | 90.5 | | “One cutting and one caving” with multicycle-sequence caving | 20 | 62 | 194606 | 186822 | 96.0 |
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