Prediction and verification analysis of water inflow in Hailuogou Gonghe Village No.2 tunnel
Hailuogou Gonghe Village Tunnel No.2 is the control project of Hailuogou scenic road disaster restoration and reconstruction project,the accuracy of the tunnel surge prediction provides a strong guarantee for safe and reliable construc-tion.This paper adopts the atmospheric precipitation method,groundwater runoff modulus method and groundwater dynamics method to predict the water influx of the tunnel,and at the same time combines with the actual water influx during the con-struction period,to verify the accuracy of analysis and prediction methods,the resut show that:The maximum water inflow calculated by atmospheric precipitation method,groundwater runoff modulus method and groundwater dynamics method is 6 895.16 m3/d,8 552.35 m3/d and 8 068.40 m3/d,respectively,the maximum water inflow calculated by the three meth-ods is 8 552.35 m3/d as the maximum daily water inflow of the tunnel.Comparative analysis with the actual water influx dur-ing construction shows that the predicted water influx is basically consistent with the actual water influx,thus verifying the ac-curacy of the prediction method.The conclusions of the analysis are useful for the calculation of water influx in tunnels with the same type of geological conditions.
Luding earthquakeGonghe Village Tunnel No.2water inflow predictioncomparative verification
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