SHIELD SURROUNDING ROCK DEFORMATION MONITORING SYSTEM CARRIED ON TBM, AND MONITORING METHOD THEREOF

摘要

The present invention relates to the field of shield surrounding rock deformation monitoring. Provided is a shield surrounding rock deformation monitoring system carried on a TBM, and a monitoring method thereof. The shield surrounding rock deformation monitoring system carried on a TBM comprises: an ultrasonic wave transmitting and receiving apparatus, which is used for transmitting, during the TBM tunneling process, an ultrasonic wave to surrounding rock, receiving the ultrasonic wave reflected by the surrounding rock, and sending, to a filtering apparatus, ultrasonic wave information including a transmission time, a receiving time and position information; the filtering apparatus, which is used for denoising and converting an acoustic wave signal and then transferring same to a data processing apparatus; the data processing apparatus, which is used for calculating, on the basis of the ultrasonic wave information, the distance between a shield and the surrounding rock at a corresponding position and at a certain moment, and classifying and summarizing ultrasonic wave information sent at different positions; and a display early-warning apparatus, which is used for displaying the distances between the shield and the surrounding rock at the same position but at different moments or at the same moment but at different positions, and giving, according to the sizes of the distances and changes therein, early warning determination for a TBM being jammed. While not affecting the operation of a TBM, the distance between a shield and surrounding rock can be obtained anytime and anywhere, such that the shield jamming risk of the TBM is predicted, thereby ensuring the tunnel safety.