WZG-24B Seismic Refraction&Reflection System
Based on WZG-24 engineering seismograph, WZG-24B 24 channels Engineering Seismograph is developed as a 24bit instrument under Chinese/English version WINDOWS operating system. With years of designing and manufacture experiences, and accepting latest electronic technologies and design ideas, WZG-24B features multi-function, high accuracy, high speed, reliable data and good expandability. It applys for different seismic surveys as seismic refraction survey, seismic reflection survey, surface shear wave volcity survey and so on.
| • Wave speed (sheared wave) survey |
| • Transient multifold Rayleigh wave prospecting |
| • Multi-wave high density seismic imaging |
| • Shallow refraction survey |
| • Foundation pile inspection |
| • Civil engineering quality detection |
| • Site constant shake survey |
| • Shake-to-blasting survey |
| 1) | Inspecting building base, roadbed and civil engineering |
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• Roadbed, roadbed cavern and lava survey • Quaternary overburden layer delamination • Foundation soil type sorting and hazardous geological body survey • Foundation soil medium physical property delamination survey • Foundation reinforcement and roadbed backfilling survey • Bedrock depth and hidden geological structure prospecting |
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| 2) | Engineering inspection | ||
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• Tunnel line survey and wall rock classification • Concrete lining quality detection • Tunnel bottom detection and pilot detection • Tremor monitoring |
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| 3) | Large-scale and medium-scale water reservoir monitoring | ||
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• Dykes and dam incipient fault detection • Reservoir silt survey and silt discharging quality inspection • On backfilling stone detection of large-scale or medium-scale dam |
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| 4) | Bridge engineering inspection | ||
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• Bridge pier foundation inspection • Bridge pier concrete inspection • Bridge tremor inspection |
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| 5) | Environmental and geologic hazards detection and evaluation | ||
| • Landslide, karst, debris flow, mined-out area, active fault detection, etc. |
| • Fast sampling: 24-bit A/D, minimum Sample interval is 10μs for 3 channels and 50μs for 6 channels |
| • Perfectly displaying original signals: amplitude and phase are of high consistency, low distortion, with advanced high-cut wave filter which is better than that for 72dB; original signals are presented once again. |
| • High-speed data transferring: data collecting device and industrial PC (or notebook PC) are designed with USB, performance are much higher than other printer ports. |
| • Background noises are always being monitored; therefore, trigger signals can be received at any time to trigger sampling. |
| • Powerful software: under WINDOWS operating system, collecting software supports various working modes, such as sheared wave velocity testing, surface wave testing, micro-tremor detecting, high-density imaging, reflection and shallow refraction survey. |
| • This system adopts advanced graphic technology and screen rolls along very fast; maximum 128 channels of wave can be displayed in one screen; waveform amplitude can be balanced conveniently, etc. |
| • Flexible configuration, easily extendable: both DOS and WINDOWS are optional. |
| • Reasonable structure design, shakeproof, dustproof and waterproof. |
| Channel number | 24 |
| Sample stations | 1024, 2048, 4096, 8192, 16384 |
| Sample frequency |
Generally, 10 μs, 25μs, 50μs, 100μs, 200μs, 500μs, 1ms, 2ms, 5ms, 10ms, 20ms; For micro-tremor survey, 1ms ~ 200ms selectable |
| A/D converter | 24bit |
| Signal stack and amplification: | 32 bit |
| Dynamic range | 140dB |
| Frequency bandwidth | 0.1Hz ~ 4000Hz |
| Noises | 1μV(full-frequency state) |
| Amplitude consistency | ±0.2% |
| Phase consistency | ±0.01ms |
| Time lapse | 0 ~ 9999ms |
| Data format | SEG-2 |
| Working temperature | 0℃~ 50℃, 90%RH |
| Storage temperature | -20℃ ~ +60℃ |
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