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采用分级增量循环加卸载方式,对金川有色金属公司二矿区深部斜长角闪岩进行干燥与水环境下的流变实验,分析流变实验数据,研究各级应力水平下斜长角闪岩两种试样的黏弹塑性。结果表明:水对岩石的瞬时弹模及黏塑特性的影响不大,对岩石黏弹性影响显著。分析水对岩石黏弹塑性影响的原因。根据试样的实验破坏前特点,选用广义开尔文模型描述斜长角闪岩流变特性,求得两种试样的岩石流变模型参数。模型参数分析发现:水对参数E1影响明显,而对参数E2影响不大;黏滞系数的离散性大,水对其影响不明确。
Using the incremental incremental loading and unloading method, the rheological experiments of the amphibolite in the deep mining area of No.2 mining area, Jinchuan Nonferrous Metals Company were conducted under the condition of drying and water environment. The rheological experimental data were analyzed to study the variation of the amphibolite Viscoelasticity of two specimens. The results show that water has little effect on the instantaneous elastic modulus and visco-plastic properties of rock, and has a significant impact on the rock viscoelasticity. Analyze the reason of the influence of water on the rock viscoelasto-plasticity. According to the characteristics of the specimen before failure, the general Kelvin model was used to describe the rheological characteristics of amphibolite, and the rheological parameters of two samples were obtained. The analysis of model parameters shows that water has a significant effect on the parameter E1 but has little effect on the parameter E2; the viscosity coefficient has a large variability and its influence on water is not clear.