In Horizontal Directional Drilling (HDD), the gyroscope is a key part of the guidance system. Its main functions are:

1. Accurate Bore Path Navigation 🧭

   • The gyroscope measures the orientation of the drill head (azimuth and inclination) without relying on magnetic fields.

   • This helps the operator steer the drill along the designed bore path.

2. Works in Magnetically Disturbed Areas ⚡

   • Unlike magnetic steering tools, gyroscopes are not affected by interference from underground power cables, pipelines, or steel structures.

   • This makes them very useful in urban areas, under highways, railways, or substations.

3. Continuous Position Monitoring 📡

   • Provides real-time information about the drill head position and direction.

   • Ensures the drilling does not deviate and avoids striking existing utilities.

4. Higher Accuracy for Long Bores 🎯

   • Critical for long-distance or deep HDD projects (e.g., river crossings, oil/gas pipelines).

   • Keeps the bore path precise, reducing the risk of costly deviations.

👉 In short: the gyroscope in HDD is used for non-magnetic, high-precision guidance of the drill head.