Research Article
Evaluation of Water Retention Capacity of Bulkheads in Underground Coal Mines
Table 5
Connectivity coefficients of water conducting pathway of faults in surrounding rock of Panel No. 21102.
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 |  | Connectivity coefficient of water conducting pathway m | Properties of surrounding rock | Water pressure P (MPa) | Fault scale | LD/L | Properties of fault | Dynamics property of fault |  | Type | Drop (m) |  | 
 |  | 8–10 | Soft-hard | 8.32 (TR) | Small | 2 | - | Normal | Tensile |  | 8–10 | Soft-hard | 8.00 (MR) | Small | 2 | - | Normal | Tensile |  | 
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