ARAMIS M/E
Seismic system with DTSS digital
transmission of seismic signals
Surface
Underground
<
locating rock bursts in a mine
<
determining the energy of bursts
<
comprehensive assessment of rock-burst hazards
Instytut Technik Innowacyjnych EMAG
VISUALIZATION
AND PROCESSING
OF DATA ON
SEISMIC EVENTS
IN HARD
COAL MINES
Centrum Transferu Technologii EMAG Sp. z o.o.
ARAMIS M/E
Technical data
Maximum number of component channels
Sensors
Recorded frequency range
Signal transmission
Digital recording of one, two or three
components (X,Y,Z) of the signal
on one transmission line
Record and processing dynamics
Power supply of underground
transmission station
Line voltage supply
Maximum current in a line
Maximum transmission range
Data transmission speed in the DTSS system
Average location accuracy
Depending on the extent of the mine, the system is based on seismometers or
optionally on low frequency geophones. The system uses intrinsically safe data
transmission, centrally supplied from the surface, which enables to transmit
1-, 2- or 3-axial velocity movements (X, Y, Z). The sampling of signals is
performed by means of 24-bit Sigma Delta converters, providing high dynamics
of conversion and recording.
16 (standard) with one SP/DTSS cassette
(optionally 32 channels with two SP/DTSS cassettes,
- SPI-70 seismometers in SN/DTSS transmission stations
- seismometers in CS/DTSS cases
- low frequency GVu, GVd, GHa geophones
0 ÷ 150 Hz (underground transmitter)
digital, binary
1,2, or 3
no less than 110 dB (1-component), 100 dB (3-component)
central, intrinsically-safe from the surface
?
35 V DC
78 mA
up to 10 km
19200 b/s
± 20m (X,Y), ± 50m (Z) provided that the sensors are located in an
optimum manner
500 Hz
102 J
Sampling frequency
Minimum energy of a located event
Casing protection degree
of devices in the underground
IP 54
part of the system
The processing module of the ARAMIS M/E system works on the basis of the following algorithms:
§
event source location by means of the standard method (P wave method),
§
event source location by means of the circle method,
§
event source location by means of the S-P method,
§
directional method location (optionally) with the use of three-component records
§
determining the event energy by means of the integral method
§
determining the event energy by means of the approximation method based on the duration of the signal,
§
spectroanalysis and digital filtration of selected seismic records.
Visualization of the location point on the map:
§
ensures full animation (saling and moving mode),
§
allows to read the co-ordinates of the selected point with the mouse cursor of by offset,
§
allows to determine the starting point of the location.
Optional features of the ARAMIS-WIN program allow to:
§
select parameters of the on-line mode,
§
select processing parameters (to calculate co-ordinates and energy) of automatic and operator's mode,
§
set the seismogram standard view.
Explosion proof structure :
– underground part
– surface part
EC-type examination certificate
I M1 EEx ia I
I (M1) [EEx ia] I
KDB 04 ATEX 323, KDB 04 ATEX 324
KDB 05 ATEX 274, KDB 05 ATEX 275, KDB 05 ATEX 326X
Conformity marking
ORDERS TO:
Centrum Transferu Technologii EMAG Sp. z o.o.
40-189 Katowice, ul. Leopolda 31
tel. +48 32 2007 873, +48 32 2007 884
fax. +48 32 2007 883, www.cttemag.pl, e-mail: ctt@emag.pl