Microseismic Monitoring, Positioning Principle, and Sensor Layout Strategy of Rock Mass Engineering

Table 1

System configuration list.

Item	Description	Quantity
A	Sensor
1	Uniaxial 15 Hz geophone	6
B	Cable and optic fiber, twist-pair
1	Optical cable for tunnel
2	3-core shielded communication cable for tunnel, section 0.75 mm^2-1.00 mm^2	5000 meters
3	Network cable with RJ45	20 meters
C	MMS microseismograph
1	Paladin (v. 2)–24-bit seismic recorder w/6 channels, included PAL, Paladin acquisition software (per channel, installed on each Paladin recorder)	1 item
2	Junction box with sensor terminations, DIN rail, IS barriers, AC/DC, etc.	1 piece each.
D	Acquisition and processing server-on surface
1	PC/ power cut	1 set
2	Data storage and transmission server	1 set
3	Seismic acquisition workstation, mounted in 19” rack on surface w/ win XP, MS Office, HNAS—Hyperion network acquisition software, HSS standard v. 16 processing and analysis software, w/software installation and configuration	1 set
4	Seismic processing computer, FRT-view processing and analysis software, w/ software installation and configuration.	1 set
E	Installation tool kit
1	SIK-10-sensor installation kit	1 item