锚杆工作荷载与巷道围岩变形相关性的实验研究

On the basis of the research achievement, this paper proposes the evaluation of the surrounding rock stability by working load of rock bolts, and experimental research has been conducted on it with the physical analogous simulation. According to the surrounding rock control theory and the experimental results, this paper analyses the characteristics of surrounding rock deformation of roadway in the case of bearing load. This paper also reveals the evolution laws of the bolts' working load with surrounding rock surface displacement and focuses on the relevance between the working load and the surface displacement of surrounding rock in the process of deformation, instability, destruction and thus determine the corresponding relationship of them. Using the relationship and the nondestructive testing of working load of rock bolts, we can achieve judgment and evaluation of the surrounding rock stability, and provides necessary theoretical and technical support for on-site analysis and real-time evaluation of the surrounding rock stability and its support structure rationality.