Deformation and filtration characteristics of solid particles in a suspension or granular material in rock strengthening with cementation and pre-stressed bolting

The laboratory testing of the transfer processes in cementation reinforcement of rocks via holes and filtering-out of cement liquid phase in pre-stressed bolting allows examination of structuring of rocks, solid particles of suspended matter and granular materials, which influences the cementation performance and the roadway stability. The paper discusses the revealed effect of the direct and return density inflows in loading solid particles and the relationship between the shape of the particles and their penetration characteristics.