The Studying And Application Of Advanced Prediction Technology In Tunnel With TSP

The hidden projects such us highway tunnel and railway tunnel always suffer fromchasm、fracture zones and other unfavorable geology, which can cause collapse、gushingand o ther geology disasters. In add ition, these disasters can affect the construction progress、casualties and economic losses. Obviously, it is important to pinpoint the geologicalconditions before the working face with the advanced prediction technology.For the target of Geophysical exploration and the base of tunnel seismic reflectionwave method, The paper elaborate the working theory of TSP48advanced GeologicalForecast System with the propa gation equation、reflection and transmission discipline.Based on layered models，author deduces the equation of the time-distance curve，andidentifies the principle of Forecast System’s arranged and parameters’ selected. Thoughtheory is the guiding to select the parameters, regulating these parameters to make sure theinterpreting results are realistic depend on the true situation. Based on the actual geologicalconditions of Mei xian to Da pu highway tunnel, author detected and interpreted on thetheoretical parameters, then found and analyzed the differences between the results andexpos e situation. Finally, author revised the blast-hole spacing, explosives amount, speed,filter parameters, which are affecting the interpreting results. Above all, author designed asuit of advanced Forecast System which is fitting for the Mei xian to Da pu highway tunnel.Also, author summarized the way of improving the accuracy through the practice.It is obvious that the predication accuracy is difficult to guarantee because of thelimited area to detect、the busy disturbed actors. TSP method can detect about150to200meters, it mainly reflects the rock’s mechanical and athletics property. And its detectingeffects is better to the layered media，but the long distance detecting accuracy is lowbecause of the seism wave’s weakening in the progress of spreading. However, the detectingdistance is limited. We should have about30to50meters doublication zone in order toimprove the accuracy. The data collected at the locale is low quality because of thenumerous disturb factors. Which is influencing the data handling and explanation. So,hunting for the suitable method to reduce the distraction、improving the accuracy and data handling capacity are the target of the paper.