高地温引水隧洞围岩与喷层结构热力学参数敏感性分析

发布时间：2018-05-28 06:46

  本文选题：引水隧洞 + 围岩热力学参数　； 参考：《水力发电》2017年09期

【摘要】：以新疆某水电站引水隧洞高地温段为研究对象,以现场监测获得的环向应力、温度数据为基础,对围岩和喷层结构的热力学参数(导热系数、比热、对流系数和线膨胀系数)与喷层环向应力的关系进行了分析,并采用参数敏感性分析法,研究围岩与喷层热力学参数对喷层应力的敏感性。结果表明,围岩和喷层的热力学参数对喷层拱顶环向应力的敏感度排序为:喷层线膨胀系数喷层导热系数围岩的导热系数对流系数围岩的线膨胀系数围岩的比热喷层的比热,拱顶环向应力对喷层线膨胀系数、喷层导热系数、围岩导热系数、对流系数比较敏感,而对围岩线膨胀系数、围岩比热和喷层比热不敏感。
[Abstract]:Taking the highland temperature section of the diversion tunnel of a hydropower station in Xinjiang as the research object, based on the circumferential stress and temperature data obtained by field monitoring, the thermodynamic parameters (heat conductivity, specific heat) of surrounding rock and jet layer structure are studied. The relationship between convection coefficient and linear expansion coefficient was analyzed and the sensitivity of thermodynamic parameters of surrounding rock and jet layer to the stress of jet layer was studied by parameter sensitivity analysis. The results show that the sensitivity of thermodynamic parameters of surrounding rock and spray layer to the circumferential stress of the dome is in the order of linear expansion coefficient of jet layer, thermal conductivity coefficient of spray layer, heat conductivity coefficient of convection coefficient of surrounding rock, specific heat of specific heat jet layer of surrounding rock. The circumferential stress is sensitive to the linear expansion coefficient, thermal conductivity coefficient, heat conductivity coefficient of surrounding rock, convection coefficient, but not to linear expansion coefficient, specific heat of surrounding rock and specific heat of jet layer.
【作者单位】： 石河子大学水利建筑工程学院;新疆维吾尔自治区水利水电勘测设计研究院;
【基金】：国家自然科学基金项目(51408377) 石河子大学杰出青年科技人才培育计划(2015ZRKXJQ06)
【分类号】：TV554
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本文编号：1945717