【摘要】 利用岩石剪切流变仪,对巫山县望霞乡望霞高陡斜坡粉砂质泥岩夹层进行剪切流变试验,通过剪切流变曲线可以看出,岩石具有明显的瞬时变形,且与正应力、剪应力水平密切相关.将剪切流变曲线划分瞬时剪切流变与稳态剪切流变2个阶段.通过试验数据,分析了岩石的平均剪切流变速率,表明在同一正应力水平条件下,岩石的平均流变速率与剪应力之间可以用υ=Aτ+B的正线性关系来表征.采用广义的Kelvin模型对岩石的剪切流变全程曲线进行拟和,拟和效果与试验数据吻合较好.更多还原

【Abstract】 The shear rheological experiment on the shear rheology equipment is carried out for silty mudestone seam in Wangxia high steep slope of Wangxia country,Wushan County.The shear rheological curves show that the stone has clear transient deflection,which is closely related to normal stress and shearing stress.The shear rheological curves can be divided into two phases,transient shear rheology & stabilization shear rheology.Based on test data,the paper analysises average shear rheological velocity.The results show that under the same normal stress condition the relation of average shear rheological velocity and shearing stress can be espressed by a linear equation: υ=Aτ+B.The paper makes shear rheological curvers fitting with general Kelvin model;the fitting results are consistent with test data.更多还原