摘要
为研究加载速率对岩石内能量积聚与耗散的影响规律,运用FLAC3D软件结合岩石CT扫描结果重构出具有真实分布的非均质模型,并进行多加载速率单轴模拟试验,借助Fish语言实现加载过程中能量积聚及耗散量的统计.结果表明:加载速率增加将会使能量耗散和积聚更早发生,介质中弹性能存储密度的最大值与加载速率呈正相关的指数关系,指出研究介质力学响应应当与加载条件建立对应关系.
In order to understand the influence of loading rate on energy accumulation and dissipation in rocks, a heterogeneous model with real distribution is proposed in FLAC3D based on the CT-scanning experimental data. Numerical uniaxial tests are carried out under different loading rates, and the statistics of energy accumulation and dissipation during loading process are achieved by Fish Language coding. Results show that the energy accumulation and dissipation occurs earlier with increasing loading rate, and a positive exponential relationship between the maximum storage density of the elastic energy and the loading rate can be established. It is suggested that the relationship between loading conditions and the mechanical response of medium should be determined during research.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2014年第3期369-373,共5页
Journal of China University of Mining & Technology
基金
国家重点基础研究发展计划(973)项目(2010CB226801)
国家自然科学基金项目(51174213)
煤炭资源与安全开采国家重点实验室开放基金项目(SKLCRSM11KFB07)
关键词
加载速率
CT扫描
非均质
能量积聚
能量耗散
弹性能存储密度
loading rate
CT scanning
heterogeneous
energy accumulation
energy dissipa-tion
elastic energy storage density
