Anti-seepage structure of red mud yard

Abstract

The invention discloses a red mud storage yard anti-seepage structure. The structure comprises an anti-seepage layer, a flexible protection layer arranged above the anti-seepage layer and a rigid protection layer arranged below the anti-seepage layer. The flexible protection layer is in a net structure. Anti-seepage layer materials comprise polycarbonate, polytetrafluoroethylene, pulverized fuel ash, hammer mill glass fibers, polyacrylic acid-2-ethylhexyl ester, antioxidants, ultraviolet light absorption agents and anti-aging agents. According to the anti-seepage materials that are used, the heat resistance, the cold resistance and the chemical stability are good, rigidity and toughness are high, mechanical strength is good, environmental stress cracking resistant and tearing strength resistant performances are good, the mechanical performance and the barrier performance are improve correspondingly along with the rising of the density, and the heat resistance and the tensile strength are better; the structure is resistant to corrosion of acid, alkali, organic solvents and the like, provided with outstanding anti-aging, uvioresistant and anti-decomposition capacities, capable of being exposed, high in right-angle tear resistance, joint reliability and whole anti-seepage layer structure strength and provided with high tensile strength and elongation percentage, so that the structure can be adapted to the anti-jacking strength of the locality to dinas in large-area storage yards, and the red mud waste cannot seep into underground when storage yards are used.

Description

technical field [0001] The invention relates to the field of red mud treatment, in particular to an anti-seepage structure for a red mud storage yard. Background technique [0002] The raw material of the aluminum smelting industry is usually bauxite, and the remaining mineral residue after extracting the active components of the bauxite is the aluminum industry tailings, usually called red mud. Red mud is a kind of red soil-like particle composition substance. Its mineral composition is relatively complex. It mainly contains minerals such as alumina, iron oxide and silicon oxide. It usually shows strong alkalinity and corrosiveness. Because red mud and its seeping liquid (red mud attached liquid) are strongly alkaline and corrosive, they are very destructive to the environment and have great destructive power to adjacent animals and plants, so the safe stacking of red mud Survival issues are particularly important. The site where the red mud is stored becomes the tailings...

AI Technical Summary

Problems solved by technology

The biggest problem for the reservoir area and dam body is its stability and anti-permeability, among which the stability issue is the most important. Once the red mud tailings pond breaks, a large amount of red mud and red mud attached liquid will leak out, which will It poses a huge threat to the life and property safety of nearby residents and the surrounding environment

In order to prevent the harmful substances in the industrial tailings from leaking out and polluting the soil, the industrial tailings should be treated with anti-seepage. Usually, anti-seepage cloth is set on the slope of the mountain, and a certain thickness of yellow is covered on the anti-seepage cloth. The purpose is to prevent the anti-seepage cloth from being directly exposed to the atmospheric environment and prevent the anti-seepage cloth from aging too quickly due to wind and sun. However, in the actual construction process, due to the influence of the height of the slope and the gravity of the soil The anti-seepage cloth covered on the slope will be torn, especially when the rainfall is abundant, the soil covered by the anti-seepage cloth is easy to be washed away, and the anti-seepage cloth is easily damaged, which directly affects the anti-seepage Effect

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