Table 3 Statistics of the water leakage rate of limestone in the Changxing Formation.
Region | Name of coal mine | Number of exposed boreholes | Number of leaking holes | Water leakage rate (%) |
|---|---|---|---|---|
Bijie | GuanZhai coal mine | 44 | 6 | 13.6 |
Gaoshan coal mine | 12 | 2 | 16.7 | |
Tailai coal mine | 8 | 3 | 37.5 | |
Qinglong coal mine | 49 | 34 | 69.4 | |
Xintian coal mine | 49 | 7 | 14.3 | |
Wufeng coal mine | 75 | 10 | 13.3 | |
Dayun coal mine | 47 | 24 | 51.1 | |
Linhua coal mine | 41 | 8 | 19.5 | |
Zunyi | Xinglong coal mine | 34 | 13 | 38.2 |
Statistics | 359 | 107 | 30.4 | |
