Geophysical 2D 3D Resistivity Tomography 2D IP Profiling Sounding Ves Exploration Equipment 2D And 3D Underground Resistivity Imaging System For Water Detection
WDA-1/WDA-1B is our latest all-purpose terrameter with 1D Res/IP sounding, 2D Res/IP imaging as well as 3D Res imaging function. It is widly apply for underground water inspection, energy resource prospecting, city geophysical exploration, metal and nonmetal mineral resources survey, geothermal field survey and so on.
Application:
• Underground water inspection
• Energy resource prospecting
• City geophysical exploration
• Railway and bridge inspecting
• Metal and nonmetal mineral resources survey
• Engineering geology
• Geothermal field survey
| Maximum power |
7200W(VES),2400W(Imaging) |
| Maximum voltage |
1200V(VES),2400 peak-to-peak; 800V(Imaging), 1600 peak-to-peak |
| Maximum current |
6A(VES), 3A(Imaging) |
| Power supply pulse width |
1~60s, duty cycle is 1:1 |
| Receiving |
| Voltage |
± 32V (24 bit A/D) |
| Vp accuracy(before stacking) |
If Vp≥5mV, ±0.2% ±1LSB. If 0.1mV≤ Vp<5mV, ±1%±1LSB. |
| Current |
6A (24bit A/D) |
| Ip accuracy(before stacking) |
If Ip≥ 5mA, ± 0.2% ±1LSB;If 0.1mA≤ Ip<5mA, then ± 1% ±1LSB.. |
| Apparent Polarizability Accuracy |
±1% ±1LSB |
Before the project is carried out, it is necessary to find out the fault distribution in the working area. At present, 2D high density electrical method is mainly used for detection, and 3D high density electrical method is added for comparative analysis. In order to verify the effectiveness of 2D and 3D high-density electrical method in detecting faults and understand the response characteristics of faults, forward and reverse fault models were established. Forward modeling by finite element method and least square inversion were used to compare the differences of inversion results between different models. Finally, field examples were used for further analysis and verification. The results show that the high density electrical method is effective and accurate in detecting faults, but the detection effect of the reverse fault is obviously better than that of the normal fault. The 3D high density electrical method has abundant data and large inversion depth, and the results are closer to the theoretical model. The field measured data further verify the simulation results, and the conclusions obtained have certain guiding significance for fault detection, interpretation and analysis
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