Study On Reflected-Wave Tunnel Seismic Prediction

Since the geology circumstance in front of the digging face is unknown, there will exist more latent and unforeseen geology factors. So, it often causes all kinds of geology danger, which will influence seriously the progress of construction degree, even bring the geological disasters, resulting in serious personnel' s dead or injured and losing with the tremendous economy. Geophysicists and engineers all over the world have been paying for much arduous efforts, and have been hoping to look for a simple and valid way to pre-detect the geology circumstance in front of the digging face to reduce or lower the loss.A few techniques have been found to be practical in recent years, Reflected-Wave Tunnel Seismic Prediction (RTSP for short) is a newly developed sample and effective one, which is used to predict the unknown geology circumstance in font of digging face for transportation tunnel, coal or mineral well-lane, water electricity tunnel-hole and underground engineering etc. By this technique, we can take the best to measure the geology disaster in advance, and decrease the loss as few as possible.Because the work environment in the tunnel or well-lane is the whole space, complexity of the seismic-waves increases naturally. And this has brought a very big difficulty for the actual geology prediction work. Therefore, in order to predict the geology circumstance accurately in front of the digging face, the premise and foundation is to design a reasonable and effective geometry system. At the same time, the methods and techniques of data processing is very important, which is also the premise of the accuracy to geology prediction. In addition to the normal processing steps, the valid signal separation and the depth migration are two key techniques for RTSP daXa. processing, which affect the reliability...