Roof Failure Mechanism of Thin Bedrock Working Faces under Loading and Analysis Based on Microseismic Monitoring Technology

Table 3

The energy percent of three stages.

Energy (J)	The percent of energy event in stage before the square stage (%)	The percent of energy event in square stage (%)	The percent of energy event in stage after the square stage (%)
0–100	29.8	5.1	15.0
101–300	49.1	35.9	42.5
301–500	8.8	29.5	26.5
501–1000	8.8	21.8	13.0
＞1000	3.5	77	3.0