Abstract:
In order to study the stability of surrounding rock of coal roadway, five factors, such as integrity of surrounding rock roof, strength of surrounding rock roof, coal strength, thickness of weak rock and buried depth, were selected as the evaluation indicators. According to the normal cloud theory and Delphi theory, the normal cloud model was obtained to classify the stability classification of surrounding rock of coal roadway. And then the model was applied to actual engineering. Compared with the BP neural network method, the results show that the normal cloud method has excellent performance and high prediction accuracy.