Abstract
The Zipingpu tunnel located at the Sichuan province Dujiangyan to the Wenchuan section of 317 state highway, it is the key difficult project in this section. This tunnel is designed for dual-hole, the length of left hole is 4090m, the right hole is 4060m, the maximum burying depth surpasses 550m, it is a high concentration gas tunnel and has appeared several gas abnormal emission phenomenon in the construction. Combination with existing features of gas tunnel monitoring data, this paper carried on the classification to the Zipingpu tunnel massive monitor data to analyze and predicted gas emission tendency, then fined the influencing factor of monitor data, proposed the gas monitor data division type and the prediction model, and practical application in Zipingpu tunnel construction process, prediction result is conform with sample measured data.
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