【摘要】 为了研究粉砂质泥岩料的湿化变形特性,采用长江科学院大型三轴仪进行了单线法三轴湿化试验,试样尺寸Ф300 mm×H600 mm,试验围压0.1、0.4、0.8、1.2 MPa四级,应力水平为0.0、0.2、04、0.6、0.8五级。通过三轴湿化试验获得了粉砂质泥岩料的湿化变形特性,轴向湿化应变与湿化应力水平密切相关,与围压关系不明显;体积湿化应变与湿化应力水平、围压均相关,并提出了湿化模型及模型参数。最后,将本次粉砂质泥岩料的湿化变形成果与花岗岩湿化变形成果进行了对比分析,粉砂质泥岩料的湿化变形量明显大于硬岩料的湿化变形量。更多还原

【Abstract】 In order to study the wetting characteristics of silty mudstone materials, a single line wetting test was conducted with a large triaxial apparatus. The dimension of sample is Ф300 mm×H600 mm. The confining pressure is 0.1, 0.4, 0.8 and 1.2 MPa. The stress level is 0.0, 0.2, 04, 0.6 and 0.8. The wetting deformation characteristics of silty mudstone out of this test demonstrate that axial wetting strain is closely related to the wetting stress level, and is not obviously related to the confining pressure. The volume wetting strain is related to the wetting stress level and confining pressure. The wetting model and the model parameter are also presented. The wetting deformation characteristics of silty mudstone and granite were compared, showing the wetting deformation of silty mudstone is obviously greater than that of hard rock.更多还原