A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams

Table 2

Microseismic monitoring data on the 20th of April.

Time	Energy/J	Time	Energy/J	Time	Energy/J	Time	Energy/J
8:09:04		15:03:49		16:04:04		17:00:44
8:10:19		15:08:29		16:09:29		17:01:04
8:51:19		15:20:29		16:12:14		17:02:04
9:47:54		15:21:04		16:14:44		17:02:14
9:51:14		15:21:44		16:21:54		17:03:09
11:26:14		15:25:04		16:26:34		17:04:54
12:20:29		15:25:24		16:32:09		17:05:14
12:36:54		15:28:19		16:34:14		17:05:19
12:38:14		15:31:34		16:38:49		17:06:29
13:08:24		15:36:24		16:41:24		17:06:54
14:16:14		15:38:59		16:41:44		17:06:59
14:20:39		15:40:49		16:43:19		17:07:04
14:27:44		15:45:04		16:51:44		17:07:39
14:35:49		15:45:54		16:52:04		17:07:59
14:39:39		15:54:39		16:54:29		17:08:19
14:55:24		15:56:09		16:58:39		17:08:29
14:55:44		16:02:49		17:00:19		17:09:14