In order to study the influence of the crack obliquity on the strength, the deformation, the crack propagation and the failure process of rocklike specimens, the SHPB loading test is carried out for rocklike specimens, with prefabricated cracks containing different inclinations. It is found that the strain phase segment is not obvious under the SHPB loading and the strain softening stage and residual strength section are almost of non-existence. Under the SHPB loading, the peak strength of the rock specimens is almost the same as that under the static loading, that is, it is in a V shape against the angle of the rocklike specimens and it increases before it decreases. The peak strength of the specimens is the minimum, when the crack obliquity is 45°, and the peak strength of the specimens is very close to that of the complete specimens when the crack obliquity is 0° or 90°. The strength of the rocklike specimens under the SHPB loading increases slowly and the peak strength is less than the peak strength under the static loading under the same condition. The crack angles decrease with the increase of the prefabricated crack inclinations. When the prefabricated crack inclinations are relatively small (0°,15°), the crack angle is close to 90°. This trend is consistent with the static loading. The SHPB loading process is different from that of the static loading, it lasts about 2s from the beginning of the loading to the complete failure of the rocklike specimens, with an extremely fast speed.

crack obliquity  /  rocklike specimens  /  SHPB  /  mechanical properties  /  failure process