Deformation Characteristics of Fissured Loess in Triaxial Compression Tests

After triaxial compression to fissured loess samples with different moisture content and different angle and position of fissure in samples under different confining pressures,deformations are measured by means of mesh lines marked in side face of fissured loess samples.The deformation characteristics are described and deformation rules are generalized.Results of tests show that there are 4 types of deformation which are axial deformation,bending deformation,rotation deformation and torsion deformation.Deformation types are related to such actors as moisture content,angle and position of fissure in samples and confining pressures of tests.And the deformation types have direct influence on failure modes of fissured loess.