Study on Mechanism of Influence of Mining Speed on Roof Movement Based on Microseismic Monitoring

Figure 3

Characteristics of microseismic activity under different advancing speeds. (a) 2016.04.14∼2016.04.15 (slow advancing). (b) 2015.10.30∼2015.10.31 (fast advancing). (c) 2016.04.12∼∼2016.04.15 (slow advancing). (d) 2015.10.15∼2015.10.31 (fast advancing).

(a)

(b)

(c)

(d)