Field application and diffusion law of grouting slurry in floor aquifer of a coal mine

Floor aquifers are responsible for approximately 55% of water inrush incidents in coal mines. As mining depths increase, the risk posed by confined floor aquifers becomes more severe. Grouting reinforcement and the sealing of water channels in the mine floor have been widely adopted as mitigation measures. This study investigates the flow and diffusion behavior of grout under hydro-static pressure by examining the fundamental properties of two grout types-pure cement slurry and cement-clay mixture-through orthogonal testing. The influence of grout specific gravity on key properties, including viscosity, bleeding rate, stone formation rate, setting time, and compressive strength, is analyzed. Furthermore, a…

• NN
  National Natural Science Foundation of China

  Awards: 52174073, U24B2041, 52274079
• HP
  Henan Polytechnic University

  Awards: 52174073, 23IRTSTHN005, 52274079
• NS
  Natural Science Foundation of Henan Province

  Awards: 52174073, 242300421246