A Multistep Method for Automatic Determination and Optimization of Microseismic P-Phase Arrival Times in a Coal Mine

Table 1

Station layout parameters.

Sensor coordinates (m)
Station number (#)	X axial	Y axial	Z axial	Station location
1	438.82	389.3	−191.49	Haulage roadway
2	446.95	360.04	−184.306	Haulage roadway
3	454.68	333.56	−178.669	Haulage roadway
4	463.56	303.22	−174.108	Haulage roadway
5	471.99	275.47	−166.204	Haulage roadway
6	481.08	247.3	−162.075	Haulage roadway
7	572.29	387.38	−186.378	Ventilation roadway
8	598.85	301.87	−172.128	Ventilation roadway
9	590.08	329.94	−175.486	Ventilation roadway
10	598.85	301.87	−172.128	Ventilation roadway
11	607.09	272.79	−166.429	Ventilation roadway
12	616.86	244.66	−160.446	Ventilation roadway