GT-30 Geotech addresses high-resolution shallow exploration needs. Through a small-size loop and fast switch-off technology, it achieves continuous full-depth detection from the surface down to several tens of meters, with an extremely small blind zone.
Engineering inspection: karst caves, fractures, karst, and weak layers beneath highways, airport runways, urban roads, and railway and highway tunnels; safety hazards such as leakage, voids, and ant nests in reservoirs, river dams, and tailings dams.
Engineering investigation: assessment of shallow karst scale, morphology, and water content; scale, attitude, and water content of shallow fault zones; 3D characteristics such as distribution, burial depth, and attitude of shallow goafs; thickness and burial depth of permafrost.
Mineral exploration: rapid assessment of metal-mine tenure prospects, and investigation of ore-body extent and attitude.
Others: detection of ancient tomb distribution and burial depth, and metal artifacts within tombs in archaeological research.
| GT-30 |
Coplanar equal-flux oppositely-polarized integrated transceiver coil; the forward and reverse primary fields cancel inside the receiving coil, forming a zero-flux zone.
Manufactured as a single piece from high-strength non-metallic material; the primary field cancels by itself, and changing the device size adapts it to different depths.
Can be paired with different coils, covering coal-mine explosion-proof environments, tunnel advance prediction, and surface detection.
Downhole and tunnel full-space interpretation software system with one-click filtering and one-click mapping; data is uploaded, saved, interpreted, and mapped in real time.
| Parameters | GT-30 |
|---|---|
| A/D Converter | 32Bit |
| Dynamic Range | 160dB |
| Sampling Rate | 1μs、4μs、16μs、 |
| Number of Channels | 2 |
| Background Noise | 1μV |
| Voltage Measurement Range | -200V-200V |
| Voltage Measurement Resolution | ≤300nV |
| Measurement Accuracy | 0.1% |
| Input Gain Range | 1/80-8000 |
| Minimum Sampling Interval | 4μs |
| Noise Suppression | >100dB |
| Passband | 0-500kHz |
| Stacking Times | 200 |
| Dimensions | 403mm×330mm×178mm (L×W×H) |
| Weight | 8kg |
| Operating Temperature | -10℃-50℃ |
| Transmit Voltage (V) | 36-57 |
| Transmit Current (A) | 25、50、100、200 |
| Current Pulse Width (ms) | 10、20、40 |
| Transmit Waveform | Bipolar square wave with 1:1 duty cycle |
| Max Transmit Power (KW) | 3.6 |
| Turn-off Time | 0.5-300μs |
