不同温度和水压作用下卸荷砂岩变形特征分析

Analysis of Deformation Characteristics of Unloaded Sandstone under Different Temperature and Water Pressure

为研究不同温度和水压对卸荷岩体变形特征的影响,使用TOP INDUSTRIE岩石三轴试验仪进行不同温度(20℃、40℃、60℃)和不同水压(0.3MPa、0.6MPa、1.2MPa)条件下的砂岩三轴卸荷试验。结果表明:砂岩试样变形模量值随着围压和温度的增大而上升,随着水压的增大而下降;轴向峰值应变随着围压增大逐渐增大,随着温度的增大逐渐减小。

In order to study the influence of different temperature and water pressure on the deformation characteristics of unloaded rock mass, the TOP INDUSTRIE rock triaxial test instrument was used to carry out the unloaded sandstone triaxial test under different temperatures(20℃, 40℃, 60℃) and different water pressure(0.3 MPa, 0.6 MPa, 1.2 MPa). The results show that the deformation modulus of sandstone samples increases with the increase of confining pressure and temperature, but decreases with the increase of water pressure. The peak Axial strain increases with confining pressure and decreases with temperature.