The geomagnetic guidance system is a specialized device used in trenchless engineering applications, employing the Earth’s magnetic field to locate and correct underground drilling trajectories. The equipment utilizes magnetic azimuth data to guide steering operations, with signal transmission capability unaffected by construction length, making it suitable for large-scale crossing projects. In domestic engineering applications, it has achieved a record operational depth of -60 meters.
The system operates based on Earth’s magnetic field measurements, with the positioning system providing real-time azimuth data. Steering personnel use these parameters to issue operational commands to the driller. Azimuth accuracy is a core performance metric but is susceptible to external interference from ferromagnetic materials, cables, and other sources. To address this issue, the R&D team developed a ground beacon positioning system, which enables real-time deviation correction by deploying artificial magnetic field markers.
Detecting Specification
| Inclination accuracy | ±0.1° |
| Tool angle accuracy | ±0.1° |
| Azimuth accuracy | ±0.1°(Dip angle≤10°) |
| ±0.3°(Dip angle＞10°) | |
| Magnetic measurement range | -9.8*10~9.8*10,nT |
| Magnetic measurement noise | ≤0.15nT |
| Communication distance | ≤2000m(Extensible) |
| Traffic rate | 9600/2400bps |
| Sonde size | 40mmx695mm |
| Sonde weight | 3kg |
Locating Specification
| Excitation signal | DC or AC(square wave or sine wave) |
| Output power | Max.500W |
| Working frequency | 1-10Hz is optional,default 2Hz |
| Locating output | Three axis coordinates(front back,left right,up down) |
| Max distance | 80m(Depend on the environmental magnetic field) |
| Locating accuracy | ±1%(clode range),±2%(remote) |
| Locating time | Optional,typical 10s |
| Magnetic target deployment | No required leveling,vertical lifting |
| Magnetic target size | 1100mmx1200mm |
| Magnetic target weight | 30kg |
This device is of exquisite workmanship,with complete components and comes with a standard 24-piece set.
The detecting and locating performance is reliable and does not fall behind the advanced products from abroad.
The detecing sonde is small and lightweight (the shortest and lighest),making it easy to install.
Each sonde had been calibrated with a pipe in the outdoor environment and comes with a quality inspection report.
It is equipped with an arcylic stand,which is convenient for users to roll and self-test.
