Methods of analysis of an impulse response wave of a steel anchor fixed in a rock mass

摘要

The theoretical discussion and results of simulations together with laboratory measurements lead to the following conclusions: 1. The most favourable results have been obtained with the method of signal cepstrum analysis. The method makes it possible not only to detect discontinuities in anchor adhesion in rock mass, but also to identify the places where they occur. 2. The other methods, i.e., analysis of anchor impulse responses in the aspect of frequency [2] and linear prediction coding (LPC) [3], should be regarded as methods of much poorer efficiency, and their applicability should be restricted to identification of emergency adhesion condition with no possibility of indicating the causes of the condition.