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

Table 3

Microseismic monitoring data on the 22nd of April.

Time	Energy/J	Time	Energy/J	Time	Energy/J	Time	Energy/J
17:38		21:40		22:25		22:33
18:23		21:48		22:27		22:33
19:20		21:49		22:28		22:34
19:23		22:02		22:28		22:34
19:27		22:02		22:29		22:35
19:30		22:05		22:29		22:35
20:17		22:12		22:29		22:36
20:17		22:17		22:30		22:38
20:49		22:17		22:31		22:38
21:08		22:19		22:31		22:40
21:15		22:19		22:31		22:42
21:39		22:23		22:32