Improvement Effect of Reticular Glass Fibers on the Mechanical Properties of Tailings Sand with the Lenticle (Layered Sandy Soil)

Glass fiber is a kind of polymer, which can effectively improve the mechanical properties sand. However, improvement effect glass fibers with reticular structure different from that ordinary fibers. At same time, sandy soil diversified and part layered, such as lenticle in tailings dam, often forms layered nearby The existence has adverse effects on stability dam. In order to study reinforcement tailing sand (layered sand), series triaxial shear tests were carried out by changing layers position reinforcement. results demonstrated following five main points: (1) strength significantly lower than fine sand, influence mainly concentrated cohesion. (2) When added lenticle, cohesion sample increases nonlinearly increase number layers, while internal friction angle basically unchanged. (3) varies reinforcement, represented interface > lenticle. (4) Only when axial strain develops certain extent, reflected. (5) reticulated are determined interaction forces at between research not only provide scientific basis for construction reinforced but also play guiding role disaster prevention mitigation work slopes weak zone, even reference structures.