高温热害隧洞温度场计算及隔热层选取原则  

The Temperature Pattern Calculation of High Temperature Damage Hydraulic Tunnel and Selection Principle of Thermal Barrier

作　　者：李燕波[1] 

机构地区：[1]新疆水利水电勘测设计研究院,乌鲁木齐830000

出　　处：《水利科技与经济》2017年第12期92-96,共5页Water Conservancy Science and Technology and Economy

摘　　要：以新疆齐热哈塔尔水电站引水隧洞工程出现的高地热地质灾害为例,在理论计算隧洞温度场分布的基础上,针对高温热害隧洞隔热层的选取原则进行探讨。结果表明,高温热害引水隧洞中,在围岩与衬砌间设置隔热层能显著减小衬砌两侧的温差和温度应力,随着隔热层厚度的增大与导热系数的减小,其隔热性能逐渐增大,并给出相应的计算公式。根据相应的推导公式,针对目前工程中使用的隔热材料进行对比分析,为工程中选取隔热材料提供参考。On the basis of theoretical calculation of tunnel temperature field and stress field distribution, we discussed the selection principle of thermal barrier of high temperature damage hydraulic tunnel taken a Xinjiang Taxkorgan River Qirehataer hydropower station tunnel as example. The results shows that the thermal -protective coating can significantly reduce the temperature difference-between the surrounding rock and lining, its heat insulation performance increase gradually with the thermal insulation layer thickness increases and the decrease of the coefficient of thermal conductivity, the corresponding calculation formula are also given in this paper; in view of the present engineering used in the insulation material has carried on the comparison and analysis, provides reference for selection of insulation materials in engineering.

关 键 词：高温热害 隧洞 隔热层 导热系数 

分 类 号：TV52[水利工程—水利水电工程]