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Research on the optimization of grouting flow detection sensor layouts based on laser ranging technology.

Lichang Wang1,2, Wei Long1,2, Zhanghui Fei3

  • 1School of Geosciences and info-physics, Central South University, Changsha, 410075, China.

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|May 9, 2025
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Summary

This study introduces a laser ranging method for accurate grouting flow measurement, overcoming limitations of electromagnetic flowmeters in low-flow conditions. Optimal sensor placement in a stable slurry zone significantly reduces measurement errors.

Keywords:
Laser ranging technologyLiquid level fluctuationsNumerical simulationSensor layoutSlurry float

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Area of Science:

  • Geotechnical Engineering
  • Fluid Dynamics
  • Measurement Science

Background:

  • Accurate grouting flow measurement is vital for construction quality and waste reduction.
  • Electromagnetic flowmeters exhibit reduced precision in low-flow scenarios.

Purpose of the Study:

  • To develop and validate a laser ranging-based method for precise grouting flow measurement.
  • To analyze slurry liquid level fluctuations for improved flow detection.

Main Methods:

  • Theoretical modeling and indoor experiments were conducted.
  • Numerical simulations analyzed liquid level fluctuations under varied conditions.
  • Slurry surface dynamics were investigated across different water-cement ratios and stirring speeds.

Main Results:

  • Liquid level stability varied radially based on water-cement ratios.
  • Three distinct slurry surface zones were identified: turbulent, stable, and high-fluctuation.
  • Optimal sensor placement in the stable zone achieved measurement errors as low as 0.83%.

Conclusions:

  • The laser ranging method offers a significant improvement over traditional flowmeters.
  • Validated framework for sensor layout optimization enhances grouting flow detection reliability.
  • This technique is crucial for advancing precision in geotechnical engineering applications.