The models of the traditional rock bolt support theory are mostly obtained through a large number of simplified. Current roadway bolting in coal mine, both the rock bolt support theory and the scene of the bolt support design are largely deviated from the actual. The scene of the bolt support design is mostly made after experience analogy, there exists great blindness.
On the basis of the traditional rock bolt support theory, according to the role of the relationship between rock bolt and surrounding rock, combining previous in improving anchor rod theory and model test research results of strength parameters, from the perspective of composite material mechanics and damage mechanics theory, we get the relationship between bolt and surrounding rock for the bolt failure system energy analysis, anchor reinforcement composite reinforced rock mass mechanics analysis and roof damage mechanism analysis. On this basis, we defined the anchor reinforcement of rock mass stability potential coefficient (safety factor), and primarily established roadway bolt support design method based on potential anchor reinforcement.
This stability potential coefficient analysis has a certain reference value for similar roadway stability evaluation and roadway bolting quantitative design, and provides a new train of thought and way for the rock bolt support theory and design research.