| With the acceleration of the western development strategy implementation,railway tunnel and hydropower station diversion tunnel engineering construction also have rapid development.All kinds of complicated problems appearing in the process of engineering construction will have a significant impact.Qirehataer hydropower station diversion tunnel Located in xinjiang encountered high geothermal problem in construction process.The problem have serious impact on construction,and also produce potential harm to the safety of engineering structures.The most special place which is different from other tunnel in high temperature tunnel is the existence of the high temperature field.Temperature factor becomes the greatest restricting factors which have serious influence during the tunnel construction and operation.In this paper,the high ground temperature hole section were studied.A preliminary study on the change laws of temperature field during the construction process and the operation of hydropower stations is conducted through numerical simulation software FLUENT.Through Qirehataer hydropower station diversion tunnel engineering measured data validate the reliability of the model;On the basis of physical experiment of various control parameters required to obtain a model;The study on the temperature field of ventilation cooling when construction and watering when tunnel operation by verifying and reliable model is made.Research provides reference basis and data supportto similar actual construction project with problems of high temperature when selecting construction cooling scheme;Predictive research is made on the influence of the temperature field in surrounding rock for tunnel put into production. |
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