Abstract: Based on the blasting similarity theory, a mechanical model of consequential rock slope with weak intercalation is established. The design idea and method of the blasting model lamination test and shear test are introduced. Using the clay of one limestone quarry as weak intercalation, the lamination property and stability of the bedding rock slope with weak intercalation are studied through the similarity model test. The test results show that the weak intercalation after blasting is divided into four regions: blasting cavity region, tightness region, affected region and undisturbed region. The blasting cavity region, tightness region, affected region constitute the lamination region. The anti-slide safety coefficient is the greatest before blasting, the second after blasting and the smallest in the course of blasting. The lamination range directly affects the anti-slide safety coefficient of the model. The thickness of weak intercalation has a great impact on the lamination range and the anti-slide safety coefficient of the model.

Key words: weak intercalation, layered rock slope, sound wave detection, lamination property, shear strength