绿泥石片岩和云母石英片岩时间效应的试验研究

Testing study on time effect of chlorite-schist and sericite-schist

为研究岩石材料的时间效应,利用CSS-1950型岩石流变试验机,分别对绿泥石片岩和云母石英片岩进行压缩蠕变试验.基于试验结果,分析了蠕变对岩石荷载-变形关系的影响规律,研究了轴向变形随时间变化的基本趋势,论述了两种片岩在蠕变过程中的变形特性,并阐明了岩石的蠕变破裂形式及损伤机制。结果表明:岩石的蠕变特性与岩性、初始损伤密切相关;云母石英片岩的蠕变性好于绿泥石片岩。

Compressive rheological experiments were carried out on chloriteschist and sericiteschist respectively to study their timeeffect by using rock rheological test equipment CSS 1950. The influence law of creep on relation between loadde formation characteristics and theology of rock were analyzed based on the experimental results, and the basic tendency of axi al strains with the time was investigated. The deformation prop erties of chloriteschist and sericiteschist during the course of rheology were discussed, and rheological failure type and damage mechanism of the rocks were clarified. Experimental results show that creep properties of rock are closely related to lithology and initial damage, and creep property of sericiteschist is better than that of chloriteschist.