Prediction of weak zones and rock boundaries on the basis of monitored parameters at full-face boring

Paper presents a method that enables continuous evaluation of change of rockmass on the face of bored working by means of indirect methods in real time. Case study presents examples of evaluation of monitored parameters on raise borer Bespadrill P-l and tunnel boring machines Wirth TB-II-33H and RS 24-27H. The sensibility and utilization of results for prediction of weak zones a rocks boundaries is introduced.