In order to study anisotropic properties of schist in Shiyan area

Hubei province

uniaxial compressive tests on cubic samples and Brazilian tests on disk samples of Wudang chlorite schist were carried out. The anisotropic strength and fracture characteristics of samples under different loading states were discussed

the mechanism was revealed. The results show that: Wudang chlorite schist shows obvious anisotropic properties; the strength parallel to foliation is higher than the vertical direction. The special orientation bunch structure and the weak cementing strength between foliations caused the different fractures and mechanisms along different directions. Under compression stress

tension-split along foliations and rod press-bent failure are easily caused by Poisson effect; and tension-shear failure is easily caused under vertical direction compression. There is strength consistency in the same direction

for the compression strength and tension strength parallel to foliations are higher than that vertical to foliations. As the tension stress between foliations is extremely low

tension-split failure and tension-shear failure are easily caused with a small angle to foliations under splitting load; so tension failure along foliation should be avoided as far as possible. The results can be referenced for reinforcement and water-proof treatment of tunnel and slope projects.