Study On Application Of Advanced Construction Geological Prediction For An Expressway Tunnel

Due to the complexity of geology, hydrology and other environmental conditions,nowadays people are confronted with many security risks of mountain tunnel constructionprocess. Making the best of modern geophysical methods for advanced geological predictionof tunnel under construction, has special and important meaning to construction safety.Because of the complexity of the actual situation, If any complex geological conditionsoccurs during construction, using comprehensive advanced geological prediction technique ismore practical valuable in engineering than single techniques. So how to combine the actualsituation according from different advanced geological prediction results madea comprehensive analysis and interpretation,is more practical significance for practicalengineering. In a setting of advanced geological prediction of an expressway tunnel, and onthe basis of existing related research, this dissertation begin more study of GPT technologyon seismic scattering field theory. The main jobs as following:(1) This dissertation sums up geological prediction and existing problems based on theprinciple of seismic reflection technique characteristics of advanced geological prediction inthe domestic and foreign. Based on this, by using the6gun12times covered and arrayobservation scheme, in order to improve and perfect the main purpose of advanced geologicalprediction forecast technology, this dissertation illustrates study of GPT technology onseismic scattering field theory. It is In order to improve and perfect the main purposeof advanced geological prediction of forecast technology.(2) With the construction of a highway tunnel advanced geological forecast as theengineering background, based on the seismic wave field forward finite element analysismethod, for position based on the project of specific geological conditions and givenface forward modeling calculation, So this dissertation is to provide the necessary theoreticalbasis of the interpretation of the results and data processing of geologicalforecast for advanced geological forecast.(3) Field test research. Using the research results obtained in this dissertation, aiming atthe construction of a highway tunnel field experimental study of advanced geologicalforecast, this dissertation is verified and validity of results through thegeological radar technology and construction excavation.