Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies

To explore solutions for reinforcement problems of broken rock masses in deep roadways, it is necessary to study the performance cement-based grout and its effect. In this study, grouting-reinforced specimens with different particle sizes coal were made, which revealed effect grouting on bearing capacity mechanism secondary damage instability reinforced specimens. First, was determined that appropriate water–cement ratio (W/C) meet field conditions 0.45. Second, uniaxial compression 0.45 W/C carried out, acoustic emission equipment used detect it. Finally, through indoor experiments, investigated differences failure modes, stress–strain curves, signal characteristics among intact samples, bodies sizes, after anchoring. The deformation patterns revealed, mechanisms elucidated.