Analysis of Key Factors Affecting Water Disaster in Deep Mining and Establishment of a Water Disaster Evaluation Method Suitable for Different Mining Depths
Table 1
Mining cases in the North China coalfield, wrongly evaluated by the method.
No.
Mining face
(MPa)
(L/(s·m))
(MPa/m)
(MPa/m)
Evaluation results
Field verification
1
III628, Zhuzhuang mine, Huaibei mining area
4.22
0.016
0.140
0.07
Danger
Safety
2
III616, Yangzhuang mine, Huaibei mining area
5.50
0.052
0.110
0.07
Danger
Safety
3
1044, Liudian mine, Huaibei mining area
6.93
0.024
0.210
0.07
Danger
Safety
4
1037, Liudian mine, Huaibei mining area
6.60
0.024
0.330
0.07
Danger
Safety
5
1088, Heishan mine, Zibo mining area
6.23
0.032
0.130
0.07
Danger
Safety
6
11022, Jiulishan mine, Jiaozuo mining area
1.19
24.450
0.052
0.07
Safety
Danger,
7
9507, Xiangzhuang mine, Feicheng mining area
0.92
8.330
0.038
0.07
Safety
Danger,
8
4221, Jiaoxi mine, Jiaozuo mining area
1.00
12.620
0.053
0.07
Safety
Danger,
9
12031, Jiulishan mine, Jiaozuo mining area
0.92
11.330
0.041
0.07
Safety
Danger,
10
1007, Fucun mine, Zibo mining area
1.46
7.120
0.043
0.07
Safety
Danger,
Note: refers to the water inflow in a water inrush case.
