Abstract：Abstract：The dynamic response of bolt achieved by impact-echo method can be effected easily by some factors. It¢s difficult to classify bolt¢s anchoring quality according to the dynamic response of bolt. In this paper，a new analytical method of bolt¢s dynamic response is put forward. The new analytical method combing with advantages of wavelet analysis and artificial neural network is presented. Firstly，the dynamic response of bolt by numerical simulation software FLAC3D is obtained. Secondly，the features are extracted from the dynamic response of bolt by wavelet analysis. Thirdly，these features are fed into the artificial neural network for training. Finally，this artificial neural network to classify the bolt¢s anchoring quality intelligent according to the dynamic response of bolt is employed. In order to validate this new analytical method，some practical signals of bolt¢s dynamic response are used for the test. The results indicate that the new analytical method is practicable.
