Electrical Resistivity Exploration Survey Meter Groundwater Exploration Device 1d Ves Vertical Electrical Sounding Survey Tools for Ground Water Detection
Resistivity method is a group of electrical exploration methods based on the resistivity difference of rocks and ores in the earth's crust to observe and study the variation and distribution law of artificial electric field, and then to carry out ore prospecting, solve structural, hydrological and engineering geological problems, and carry out environmental monitoring. Symmetrical quadrupole sounding is a kind of resistivity method, which uses four electrodes a, m, N and B
A power supply circuit is formed to measure the apparent depth of strata by changing the electrode spacing symmetrically Resistivity method. Through the analysis of the measured data combined with the geological conditions, the facies is made Should be abnormal interpretation.
WDDS-2/2B digital resistivity equipment is a new generation of DC resistivity instrument which is based on a series of advanced electrical equipment for resistivity sounding survey, and adopts 32-bit microcontroller technology and 24-bit A / D technology development.
WDDS-2 is the basic resistivity meter only with function of 1D Res Sounding. WDDS-2B designed with a internal high power on the basis of WDDS-2, up to 200V.
Function:
1D Resistivity vertical electrical sounding
Application
Underground water inspection
Engineering geology inspecting as dam base exploration and flood
Metal source exploration
Non-metal source exploration
City geophysical exploration
Railway and bridge
- Receiver
| Voltage channel |
±24V,±0.5% ±1byte,24 A/D |
| Voltage max sampling resolution |
0.01μV |
| Input resistance |
≥50MΩ |
| Sp compensation range |
±10V |
| Current channel |
3.5A,±0.5% ±1byte,24 A/D |
| Current max sampling resolution |
0.02μA |
- Transmitter
| Max transmit power |
3500w |
| Max voltage |
±1000V |
| Max current |
±3.5A |
| Power supply pulse waveform |
1:1 |
4 Pole resistivity sounding has a wide range of applications in karst exploration, groundwater exploration, shallow mineral exploration, bedrock structural investigation, railway and highway foundation investigation and other fields. This paper focuses on the case study of karst exploration, and the work area is the line location of a railway feasibility study. The exploration results show that the symmetric quadrupole resistivity sounding method has a very good effect in karst exploration projects for identifying the extent of dissolution and distinguishing the boundaries of overburden and bedrock.
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