Wave Speed Exploration Seismograph Seismic Wave Velocity Tester
Application:
a) Determination of the thickness of the overburden layer and the
undulation shape of the bedrock interface.
b) Determine the position, width and distribution direction of
hidden faults and cracked fracture zones.
c) Detect the development status of karst, gobs, burnt areas,
collapsed columns, and underground caves.
l) Divide the sequence of loose sedimentary strata.
e) Investigation of landslides and subsidence and other geological
disasters.
f) Geological mapping.
g) Quality inspection of foundation and determination of
geotechnical elastic parameters.
h) Leakage detection of dams and reservoir dams.
For the excitation of seismic waves, the seismic source should be
reasonably selected according to the requirements of the seismic
task and the seismic geological conditions of the work area. The
principle of determining the source system is that the effective
seismic wave is strong and the interference wave is relatively
weak; the frequency band is wide: when the source point is excited,
the seismic record has good repeatability.
When using hammering vibration source, falling hammer vibration
source, and mechanical impact vibration source, a special backing
plate should be laid at the shock point to prevent secondary
triggering caused by rebound.
To excite the SH wave, use the tap plate source, make the long axis
of the plank perpendicular to the survey line, and the midpoint of
the long axis be located on the survey line or the extension of the
survey line, and make the plank closely coupled with the ground. In
order to increase the excitation energy, appropriate weights can be
stacked on the plank.
Specification
| Channel | 6/12/24/48 |
| Sample stations | 1024, 2048, 4096, 8192, 16384 Micro-seismic survey, 1M sampling, several notches |
| Sampling frequency | 10μs, 25μs, 50μs, 100μs, 200μs, 500μs, 1ms, 2ms, 5ms, 10ms, 20ms |
| Micro-seismic survey | 1ms~200ms, selectable A/D converter: 24-bit |
| Signal stack and amplification | 32 bit |
| Dynamic range | 144dB |
| Frequency pass bands | 0.1Hz~4000Hz |
| Noise | 1μV(full-frequency) |
| Amplitude consistency | ±0.2% |
| Phase consistency | ±0.01ms |
Photo of product
