High Temperature Thermal Stability Analysisof Tunnel Qirehataer Hydropower Station

As the high ground temperature tunnel of Qirehataer hydropower station,the researchers has collected the tunnel’s data,carried out physical model experiment and numerical simulation experiment.Based on combining physical model test and finite element numerical simulation method ANSYS,studying of the tunnel and the tunnel’s temperature field and stress under different temperature influence.To discuss the change rule of temperature field and temperature stress field of the high temperature tunnel,providing reference basis for the actual project and data support.This is advantageous to the construction personnel to master for high temperature section of rock hole on wall temperature change law of cooling,so as to ensure the progress of the actual project construction and safety.Research results show that:The first,the paper get a get alignment in contrasting to phase in the natural ventilation condition by ANSYS finite element analysis to extract data and actual engineering measured,which proved the accuracy of ANSYS software and set parameters.The second,the result shows the temperature of the cavern rock will be identified as long as cooling and cooling standard determined by Simulating natural ventilation period,the implementation of measures to cool and tunnel operation period compared.The third,Calculation results of shotcrete calculation modelshow that the crisis in the run-time a week,especially the first an hour.At the beginning of the project operation must do a good job data observation,so as to avoid engineering accident.