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对取自西藏玉龙铜矿的花岗岩和石英砂岩进行了冻融循环试验,得到两种岩样在冻融循环过程中的体积、质量和抗拉强度的变化规律,试验结果表明:两种岩样的体积都是先收缩后膨胀;质量均有极小增加;抗拉强度都有所降低,但上述3种物理力学特性的变化方式则各不相同。通过分析,得出导致这种变化的主要因素是:岩石矿物颗粒和孔隙水在冻融循环过程中发生了相互作用。试验结果为现场边坡设计提供了重要依据,也对岩石冻融力学研究有重大意义。
The granite and quartz sandstone collected from Yulong copper deposit in Tibet were subjected to freeze-thaw cycles. The volume, mass and tensile strength of the two samples during the freeze-thaw cycle were obtained. The experimental results show that the two samples Volume of the first shrinkage after expansion; quality have a minimal increase; tensile strength has decreased, but the above three kinds of physical and mechanical properties of the different ways are different. Through analysis, it is concluded that the main factors leading to this change are: the interaction between rock mineral particles and pore water during the freeze-thaw cycles. The test results provide an important basis for on-site slope design and are of great significance for the study of rock freeze-thaw mechanics.