水力发电2017，Vol.43Issue(9)：31-38,57,9.
高地温引水隧洞围岩与喷层结构热力学参数敏感性分析
Sensitivity Analysis of Thermodynamics Parameters of Surrounding Rock and Supporting Structure in High Ground Temperature Diversion Tunnel
摘要
Abstract
Taking the section in high temperature field of the diversion tunnel of a hydropower station in Xinjiang as study object,the relationships between the mechanical paramoeters (thermal conductivity,specific heat,convection coefficient and linear expansion coefficient) of surrounding rock and shotcrete layer structure and the circumferential stress of shotcrete layer are studied based on on-site stress and temperature monitoring data,and the sensitivity of thermodynamic parameters of surrounding rock and shotcrete layer to shotcrete stress is also studied by using parameter sensitivity analysis method.The results show that the main influence factors on the circumferential stress of tunnel vault are ordered as linear expansion coefficient of shotcrete layer,thermal conductivity of shotcrete layer,thermal conductivity of surrounding rock,convection coefficient,linear expansion coefficient of surrounding rock,specific heat of surrounding rock and specific heat of shotcrete layer,in which,the linear expansion coefficient of shotcrete layer,thermal conductivity of shotcrete layer,thermal conductivity of surrounding rock and convection coefficient are more sensitive and the linear expansion coefficient of surrounding rock,specific heat of surrounding rock and specific heat of shotcrete layer are not sensitive to the circumferential stress of tunnel vault.关键词
引水隧洞/围岩热力学参数/围岩温度/环向应力/敏感性分析Key words
diversion tunnel/mechanical parameter of surrounding rock/temperature of surrounding rock/circumferential stress/sensitivity analysis分类
建筑与水利引用本文复制引用
姜海波,吴鹏,张军..高地温引水隧洞围岩与喷层结构热力学参数敏感性分析[J].水力发电,2017,43(9):31-38,57,9.基金项目
国家自然科学基金项目(51408377) （51408377）
石河子大学杰出青年科技人才培育计划(2015ZRKXJQ06) （2015ZRKXJQ06）
