Numerical Analysis of Geo-Grid to Enhence Stability of Tailings Dam

Abstract

The stability of tailing dams has recently become a hot issue on the engineering, and geo-synthetics curing processing applications are widely used. The influence of the tailings dam stability of geo-textile grid by calculating and analyzing with numerical simulation is studied. It reveals the mechanical behavior and the inherent law of the dam under different physical properties and different conditions of geo-grid. The force of reinforcement and the change law of ultimate load under different working conditions are systematically simulated by FLAC, and then analyze the formation process of sensitivity and fracture plane that influenced the ultimate load. The result shows: The failure surface is not such concentrated after joining the geo-textile grid and the safety factor increases 60%. The stability of the dam structure of tailing dam is effectively improved. Research has provided the basis for the structure stability of tailings dam's designing.

Mechanical and permeation response characteristics of basalt fibre reinforced tailings to different reinforcement technologies: an experimental study

“…Palmeira et al [10] presented a study on the use of nonwoven geotextiles in drainage and filtration systems of tailings dams and found the overall performance of the geotextiles tested under laboratory conditions was satisfactory. Zhang et al [11] found sinking displacement and collapse were reduced after adding geotextile grid and the stability of the tailings dam was effectively improved through numerical simulation analysis. Yang et al [12] pointed out that the application of geotextile tubes in the construction of tailings dam was beneficial for fine tailings disposal through a case study.…”