Research status and development trend of roadway surrounding rock grouting technology in China

Based on the current research status of grouting technology for surrounding rock in roadways in China, this study analyzes and discusses five aspects: grouting theory, grouting process, grouting materials, grouting parameters, and evaluation of grouting effect. The existing issues within the current grouting reinforcement technology for roadway surrounding rock are explored. To address these problems, the following development trends for grouting technology in roadway surrounding rock are proposed: designing and developing simulation equipment for grout diffusion; developing cost-effective and low-toxicity chemical grouting materials; establishing a set of standards for selecting grouting processes and formulating applicable conditions for different grouting techniques; creating real-time monitoring and recording instruments for grouting parameters; establishing a comprehensive evaluation system for grouting effects or developing more advanced instruments for detecting grouting efficacy.