Welcome to Geotech!
What is Vertical Electrical Sounding (VES)?
Technical Definition & Development
Vertical Electrical Sounding (VES), or 直流电法测深 in geotechnical terminology, is a fundamental geophysical method using four-electrode arrays to measure subsurface resistivity variations. Geotech’s series revolutionizes this approach with 64-channel wireless nodes, enabling 3D electrical resistivity tomography (ERT) imaging at 0.5m resolution under complex geological conditions.
Technological Evolution: VES to ERT
| Parameter | Conventional VES | Geo System | Technological Leap |
|---|---|---|---|
| Dimension | 1D Vertical Profile | 3D Volume Modeling | 200% Data Expansion |
| Electrode System | Manual Copper Rods | Wireless Nodes (IP68) | 80x Deployment Speed |
| Current Output | Fixed ≤2A | Smart 0.1Hz-10kHz | 800m Depth Penetration |
| Daily Data Points | Single-point | 200,000+ | Exponential Increase |
| Algorithm | 1D Olayinka Inversion | 3D CNN Deep Learning | Error Reduced to ±4% |
GeoERT System Technical Advantages
Innovation Highlights
- Multi-Parallel Acquisition
64-channel sync measurement with 0.1μV resolution - Self-Organizing Array
500m LoRa wireless network - Adaptive Current Control
10mA-3A dynamic adjustment for 10-800m depths - Real-Time QA System
68% reduction in field rework through instant validation
Engineering Case: Shanghai Underground Cavity Detection
Project Background
Missed 3 cavities using conventional VES in Shanghai metro extension
Technical Solution
- Equipment: GeoERT System
- Parameters: Wenner-Schlumberger hybrid array
- Scope: 3.2km total survey lines
Performance Comparison
| Metric | Conventional VES | GeoERT System |
|---|---|---|
| Positioning Accuracy | ±8.2m | ±0.7m |
| Survey Speed | 22 points/hour | 420 points/minute |
| Detection Rate | 64% | 98% |
| Cost Efficiency | ￥380,000 | ￥210,000 (45% saved) |
Smart Data Processing Workflow
AI-Driven Inversion
Geotech GeoAI software enables multi-source data fusion:
- Legacy VES Data
Enhanced rapid relaxation inversion:
ρmodel=argmin(∣∣dobs−F(ρ)∣∣2+λR(ρ)) - 3D ERT Inversion
U-Net based deep learning architecture:
Trained on 15,000+ global geological models
Technical Specifications
| Specification | Conventional | GeoERT | Competitor Benchmark |
|---|---|---|---|
| Channels | 4 | 64 (Expandable to 256) | Avg. 32 |
| Operation Duration | 8hrs | 72hrs (Solar-powered) | Avg. 24hrs |
| Temperature Range | -10℃~50℃ | -30℃~70℃ | -20℃~60℃ |
| Waterproof Rating | IP54 | IP68 (2m/72hrs) | IP67 |
| Weight | 18kg | 9.8kg (With battery) | Avg. 15kg |
Industrial Applications
Geohazard Prevention
- 3D imaging of landslide seepage paths (<50Ω·m)
- Real-time karst collapse monitoring
Urban Infrastructure
- Precise leakage detection in utility tunnels
- Road collapse early warning systems
Mineral Exploration
- 3D porphyry deposit modeling (>20mV/V)
- Coal goaf boundary mapping
Explore Revolutionary GIM Series Now
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DJF Series 5kW
DJF Series 10kW
Whether you’re engaged in environmental monitoring, mineral exploration, or urban underground space development, the DJF Series High-Power Digital DC Induced Polarization Measurement System. Our product page features:
- Technical comparisons of full series (DJF Series 5kW/DJF Series 10kW)
- Typical engineering configuration packages
- Global case study video demonstrations
