Principle
Ultrasonic is suitable for detecting verticality, aperture (groove width) and hole (groove) depth of the drilling, digging, punching concrete pouring pile and the underground continuous wall slot section of the mud retaining wall. Since ultrasonic waves propagate in the air, the energy decays quickly, so water or mud must be used for testing. The direction of vibration of the ultrasonic wave in the liquid is the same as the direction of propagation. It is a linear motion and belongs to the mechanical longitudinal wave. The energy and wave velocity are affected by the test distance, temperature and sand content. The farther the distance is, the larger the sand content is, and the more obvious the energy attenuation is. The basic method is to place the ultrasonic probe into a hole, and send ultrasonic waves to the surroundings to receive reflected waves.
Application rang
- The ultrasonic drilling monitor mainly determines whether the hole quality meets relevant technical standards and design requirements by measuring the hole diameter, hole depth, verticality and sediment thickness of the hole.
- The measured aperture (groove width) is not less than 0.5m.
Purpose
- Guide the development of the construction process;
- Provide calculation basis for the static pressure test results;
- Determine whether the hole diameter, hole depth, hole verticality and sediment (sludge) thickness meet the design requirements.
Standard Configuration
Auto double line winch (for hole quality testing and trenching quality testing)
Auto single line winch (only for hole quality testing )
Manual single line winch (only for hole quality testing )
Manual single line winch (only for sediment thickness testing )
Case analysis
Bored pile
Sediment thickness
