Characteristics of Valuable Microseismic Events in Heading Face of an Underground Coal Mine Using Microseismic System

Table 2

Parameters of the sensor used in the MS system of 117 track gateway.

Parameter	Parameter description
Sensor model	GZC60
Sensor type	Moving coil speed sensor
Receiving frequency	0–800 Hz
Sensitivity	100 V/m/s
Vibration acceleration	50 m/s^2
Peak acceleration	500 m/s^2
Distortion	≤0.3%
Damping coefficient	0.6
Installation mode	Installed at the end of bolt