Product Description
This Seismic imaging equipment is an important tool in seismic exploration, which mainly uses the propagation characteristics of seismic waves in the earth's crust to detect underground structures. There is an increasing demand for seismic imaging in the fields of urban construction, resource exploration and environmental research. In this paper, we will discuss the equipment, configurations, arrays and methods used in seismic imaging, with special focus on the multichannel surface wave (MASW) method based on seismometers, and refraction and reflection seismic mapping (seismic mapping).
The basic equipment for seismic imaging are seismometers, which can efficiently record information about the subsurface structure.The MASW technique relies on multichannel surface waves, which is a method that monitors the propagation of surface waves by arranging multiple receivers on the surface to analyse the shear wave velocity distribution in the soil. In addition, the refraction and reflection method is applied for the same purpose, but it focuses on analysing the timing and characteristics of seismic wave returns to infer subsurface stratification and structure.
In seismic imaging, array design is a key factor affecting the imaging quality. Generally speaking, MASW arrays consist of multiple ground sensors arranged at a certain spacing, and common configurations include linear arrays, circular arrays, or grid arrays. The refraction method usually employs longer receiver arrays in order to capture the waves reflected back from the ground. The array configuration of the reflection method is relatively flexible and can be adjusted according to specific exploration needs.
Seismic imaging technology has a wide range of applications. It is widely used in soil structure analysis, infrastructure assessment and design, mineral resources exploration, environmental pollution monitoring, and seismic hazard risk assessment. In civil engineering, MASW technology can effectively identify the nature of foundation soil and provide a reliable basis for foundation design. And the refraction and reflection method is fully applied in mineral and petroleum exploration, which helps to provide detailed information on resource distribution and reservoir characteristics.
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 |
Lapse-time: 0~9999ms |
Host computer (Industrial PC) |
PIII 533MHz |
EMS memory: 128M |
Disk: no less than 40GB |
CD-ROM: interior |
Display: 800 600 VGA LCD (TFT true colour) |
Input: Chinese character tablet, small keyboard, photoelectric mouse |
Port: double serial port, one parallel port, double USB port, mouse port, |