GA-Based Early Warning Method for Rock Burst with Microseismic and Acoustic Emission in Steeply Inclined Coal Seam

Table 3

On-site rock burst manifestation records.

Date	Location of working face (m)	Location of MS source	MS energy (J)	Damage form and degree
2016/11/24	2026	Located in the B2-B3 rock wall, 12 m away from the B3 bottom plate	9.5 × 10^6	Upper wall moved 0.3 m, lower wall moved 0.5 m, floor heaved by 0.4 m, damage to hydraulic props
2017/02/01	1824	Located at 9 m from the B6 roof slate	2.1 × 10^8	Upper wall moved 0.3–0.7 m, lower wall moved 0.5–1.3 m, damage to belt conveyor
2017/04/26	1568	Located in the B2-B3 rock pillar, 35 m away from the B3 bottom plate	2.2 × 10^6	Lower wall moved 0.3–0.5 m, floor heaved by 0.2–0.3 m, damage to hydraulic props and belt conveyor, reversed loader change direction