层状盐岩杂质分布对蠕变损伤的影响机理及模型研究

Based on the commonly basic problem of different impurities distribution of bedded rock salt for strategic energy caverns in rock salt in China, the tests, theoretical analyses and reconstruction of the impurities distribution modeles will be carried out and studied on the effect of impurities distribution on damage mechanics on the complete damage process of bedded rock salt creep. The properties of different material of bedded rock salt and the mechanism of damage evolution between material interfaces will be discussed on the effect of impurities distribution, and the creep damage model will be studied. The research will be started with the material properties of impurities distribution of bedded rock salt, the tests and analyses on material composition and content analysis, impurities distribution analysis, micro tests, non-destructive monitoring tests, mechanics simulation tests of cavern operator will be done. Through the tests, the time effect and impact mechanism on bedded rock salt creep damge resulted by impurities distribution will be systematically studied, and the damge evolution of bedded rock salt for impurities different distribution during the storage cavern operation will be revealed. By discussing the expressing and calculating method of impurities distribution factor and damage variable, the damaged creep moded of bedded rock salt will be established, in which the impurities distribution factor and damage variable will be considered. Finally, we believe the research results will provide a reliable theoretical basis for the evalution of long-term stability of large underground space of energy repository.

本项目拟针对我国盐穴战略能源储备中不同杂质分布的层状盐岩的共性基础问题，开展层状盐岩蠕变损伤的杂质分布影响机理的试验测试、理论分析与杂质分布模型的重建，探讨受杂质分布影响的不同物质属性及其界面间的损伤演化机理，建立相应的蠕变损伤模型。从我国不同杂质分布的层状盐岩的物质属性入手，通过组分和含量及杂质分布分析、细观试验、无损监测试验、溶腔运营力学模拟试验等，系统研究杂质分布导致的层状盐岩蠕变损伤的时间效应和影响机理，揭示储库运营中的杂质分布影响下的层状盐岩蠕变损伤演化规律，探讨杂质分布因子及损伤变量的表述与计算方法，建立融合杂质分布因子和损伤变量的层状盐岩蠕变损伤模型，为评价能源储备库等大型地下空间的长期稳定性提供可靠的理论基础。

本项目针对我国盐穴战略能源储备中不溶性杂质的层状盐岩的共性基础问题，开展了层状盐岩蠕变损伤的杂质影响机理的试验测试、理论分析与杂质分布模型的重建，探讨了受不溶性杂质影响的不同物质属性及其损伤演化机理，建立了相应的蠕变损伤模型。课题研究首先从我国不同地区盐岩的不溶性杂质的层状盐岩的物质属性入手，通过完成系列组分和含量及杂质分析、细观试验、无损监测试验、破坏力学试验等，系统研究了不溶性杂质导致的层状盐岩蠕变损伤的时间效应和影响机理，揭示了杂质影响下的层状盐岩蠕变损伤演化规律，探讨了杂质影响因子及损伤变量的表述与计算方法，建立了融合杂质影响因子和损伤变量的层状盐岩蠕变损伤模型，为评价能源储备库等大型地下空间的长期稳定性提供可靠的理论基础。发表论文30篇，其中SCI检索12篇、EI检索16篇。申请并获授权实用新型专利授权19项；申请并获准发明专利授权16项，其中美国发明专利6项。培养研究生13人，毕业6人，培养本科生2人。