New Research on Physics - Fluids Physics Reveals Insights on Grouting Technique in Deep Rock Plates

Strategic Insights -

Scientists at Northeastern University have made significant findings on the geological conditions of resource mining, particularly in relation to the grouting technique used to prevent hazards in deep floor plates. According to the report, the researchers developed a hybrid model integrating microseismic (MS) sources and finite element simulation to study the diffusion mechanism and scope estimation for splitting grouting in deep rock plates. The study aims to provide a scientific and reliable reference for evaluating grouting effect in underground engineering.

Key Takeaways:

  • The researchers developed a hybrid model that combines microseismic (MS) sources and finite element simulation to study the diffusion mechanism and scope estimation for splitting grouting in deep rock plates.
  • The study aims to provide a scientific and reliable reference for evaluating grouting effect in underground engineering.
  • The research team used x-ray diffraction (XRD) mineral analysis to detect cement hydration products contained in rock samples and compared the results with numerical estimation.
  • The findings show that slurry diffusion patterns are more complex and have significant heterogeneous distribution, and MS monitoring can help estimate closer to real scopes.
  • The research revealed that fractures provide dominant channels for slurry diffusion, with the dominant channels ranging from 0.5 to 14.5 hours.
  • The study also showed that the influence of direction is superior to quantity for penetration, and diffusion distance in regions without MS fractures is smaller than in regions with multiple fractures.
  • The average error rate of estimated ranges along the grouting hole is limited within 6.03%.
  • Secondary reinforcement measures are recommended to guarantee mining safety.

Statistics:

  • The research estimated that slurry pressure can reach 9.5 MPa at 0.5 hours and 16.2 MPa at 14.5 hours.
  • The average error rate of estimated ranges along the grouting hole is limited to 6.03%.
  • The study found that the dominant channels for slurry diffusion range from 0.5 to 14.5 hours.
  • The research team detected cement hydration products contained in rock samples using x-ray diffraction (XRD) mineral analysis.
  • The study was funded by the National Natural Science Foundation of China (NSFC), Young Elite Scientists Sponsorship Program, and China Association for Science and Technology (CAST).

Sources:

  • Lianchong Li, Yongshu Zhang, Wenqiang Mu, and Guofeng Yu. "Diffusion Mechanism and Scope Estimation for Splitting Grouting In Deep Rock Plates: a Case Study Based On Microseismic Inversion and Numerical Simulation". Physics of Fluids, 2025;37(8). Aip Publishing, 1305 Walt Whitman Rd, Ste 300, Melville, NY 11747-4501, USA.
  • NewsRx. "New Fluids Physics Study Findings Reported from Northeastern University (Diffusion Mechanism and Scope Estimation for Splitting Grouting In Deep Rock Plates: a Case Study Based On Microseismic Inversion and Numerical Simulation)". Journal of Physics Research. October 21, 2025; p 349.