Compression shear test device

The invention discloses a compression-shear testing device, which comprises a clamping plate, a cylindrical cushion block, an angle-varied plate, a right angle base plate, a roller, a roller frame, a bolt and a nut. The device is characterized in that the angle-varied plate has an arc-shaped edge; the dimensions of the arc-shaped borderline of the angle-varied plate are matched with the dimensions of the arc-shaped borderline of the clamping plate; the edge part of the angle-varied plate, which is provided with annular holes, is inserted into a groove of the clamping plate; the cylindrical cushion block, the bolt and the nut fix the angle-varied plate on the clamping plate; the right angle base plate on the inner side of the angle-varied plate is in direct contact with a rock sample; the roller is arranged on the roller frame; the roller is in the shape of a cylindrical bar; and the diameter of the middle part of the bar is larger than that of the two ends thereof. The device can flexibly adjust the angle of