堆石材料湿化特性的三轴试验研究

Experimental study on wetting characteristics of rockfill materials by triaxial tests

采用中型三轴试验仪,对砂板岩混合堆石材料进行了单线法湿化试验。主要研究了以球应力和偏应力为试验应力条件的堆石材料湿化变形规律。结果表明:球应力和偏应力分别是湿化体积体积应变和湿化剪切应变的主要影响因素;湿化体积应变与应力比较好地符合线性关系,而湿化剪切应变与应力比则较好地符合幂函数关系。并根据试验结果初步提出了相对应的湿化模型及湿化参数。研究成果可为堆石料湿化变形研究提供参考。

Based on the single-line wetting method, wetting tests on mixed sandstone and slate materials are performed using a middle-scale triaxial apparatus. According to the condition of spherical stress and deviatoric stress, the wetting deformation law of rockfill materials is mainly studied. The test results show that the spherical stress and deviatoric stress are the main influencing factors of wetting volume strain and wetting shear strain respectively. The wetting volume strain and stress ratio shows the linear relationship preferably, and the wetting shear strain and stress ratio shows the power function relationship preferably. According to the results, a wetting model and corresponding parameters are initially proposed. The research results are thought to be helpful for the relevant wetting study of rockfill materials.