Borehole Inclination Tester (PILE TEST Borehole Inclination Tester – BIT)
The Borehole Inclination Tester (BIT) is specifically designed to measure the inclination and deviations of boreholes and piles, ensuring reliable results in field operations.
The BIT does not require special inclinometer tubes. It is based on gyro technology and provides a simple, fast, and efficient inclination testing process with a very lightweight system that can be operated by a single person.
Operation Process for Boreholes
After the borehole is drilled to the required depth, the inclination measurement process begins. During this process, the inclination tester is securely attached to the drilling equipment (e.g., bucket or auger), and the depth encoder is mounted independently of the equipment. The BIT cable is then used to carefully lower the device into the open borehole without further drilling.
During descent, the device is paused at predefined depths to perform inclination measurements. At each stop, deviations are recorded and integrated with depth for real-time calculations. This process continues until the bottom of the borehole is reached. Once at the bottom, the procedure is reversed, and the device is slowly raised to the surface while repeating the same steps.
Operation Process for Existing Piles
For inclination measurements in existing piles, a special centralizer is attached to the BIT sensor, which is then mounted into a standard access tube. The sensor is manually lowered using a depth encoder. During descent, measurements are taken at intervals of several meters. The sensor stabilizes within one or two seconds at each stop, and the process continues until the bottom of the pile is reached.
Once at the bottom, the procedure is reversed as the sensor is raised back to ground level, repeating the same steps. After all measurements are completed, any resulting errors are distributed over the entire depth to enhance measurement accuracy. This method effectively evaluates axial deviations in existing piles.
Key Features
- Versatility: BIT devices can be used in both dry and water-filled boreholes, making them adaptable to various site conditions.
- Real-Time Measurements: They provide instant data during drilling, allowing operators to make immediate corrections.
- Ease of Use: Modern BIT devices are designed for quick setup and easy operation. They integrate seamlessly with existing drilling equipment without requiring additional heavy tools.
- High Accuracy: Advanced sensor technology compensates for movement during measurements, delivering highly precise data.
Applications
- Borehole Operations: Monitors the verticality of boreholes, ensuring compliance with design specifications.
- Pile Installation: Assesses the alignment of installed piles, verifying adherence to construction standards.
- Diaphragm Walls: Analyzes the inclination of diaphragm walls to detect deviations that could impact structural performance.