The Study On Advanced Geological Prediction (TSP)and Forecasted The Surrounding Rock Classification In Tunnels Of Shitian Highway

The advanced geology prediction of TSP is the most widely used method about longdistance geophysical prospecting forecast. It has been used to accurate prediction of adversegeological body in many tunnels. At present, there are lots of the application of TSPprediction. But the literature of in-depth study about TSP prediction is relatively rare. As akind of geophysical exploration methods, it need to be analyzed of the uncertainty predictionresults and different complex geological conditions. So, the significance is very vital to carryout different natural environment and geological conditions of the TSP to detect and interpretresearch, constantly accumulating the information, to improve the accuracy of the TSPdetection and the accuracy of interpretation.Firstly，on the basis of summary the basic principle of TSP detection and collectiong theinstance documents of TSP advance geological forecast, obtained some basic rules andexperience about the TSP interpretation.,and summarized the corresponding detection resultsof several common geological body figure characters.The prediction was measurement on theXiaochuan Tunnel and Chengzhou Tunnel of Shitian Highway, and analyzed the figurecharacteristics of interpretation and the forecast results, obtains some forecast conclusion.Secondly，through the excavation continuous geological description of tunnel face, fullyrestore the actual geological conditions of surrounding rock of the TSP detecting paragraphbefore100m，in order to analyze the TSP detecting results，and study the correspondencebetween TSP detection results and the excavation geology situation, draw the correspondinginterpretation rules and experience. At the same time, the contrast analysis the differencesof detection results of TSP and geological radar is done, to explore the TSP203detectingcharacteristics and applicability.Finally，selection the surrounding rock classification predictor through the TSP203detecting feature, and its values accordingto the detection results, calculates the weight usingthe analytic hierarchy process and expert investigation method, the grade of surrounding rockis forecasted of using fuzzy comprehensive evaluation. Combined with the actual excavationof BQ method of surrounding rock classfication, comparative analysis the classification resultquantificating-TSP method, verifys its accuracy or otherwise.