Device for simulating sludge plugging phenomenon of tailing dam

Abstract

The invention relates to a device for simulating sludge plugging phenomenon of a tailing dam, and belongs to the technical field of mine geotechnical engineering. The device comprises a suspension solution preparation device, a water control device, a filtering device and a sludge plugging test device, wherein the water control device is arranged at the upper end of the suspension solution preparation device and communicates with the suspension solution preparation device through a pipeline; the filtering device is arranged at the upper end of the sludge plugging test device; one end of the filtering device communicates with the water control device, and the other end of the filtering device communicates with the sludge plugging device; the sludge plugging device communicates with the suspension solution preparation device through the pipeline. The device is applicable to the study on the sludge plugging phenomenon in a tailing dam body, and the causing conditions and the mechanism can be studied; the suspension particle diameter and concentration, the microporous medium particle size, the water environment, the infiltration head and other conditions are changed to research different sludge plugging conditions; a sludge plugging mode recognizing system can be built.

Description

technical field [0001] The invention relates to a tailings dam silting phenomenon simulation device, which belongs to the technical field of mine geotechnical engineering. Background technique [0002] With the occurrence of tailings pond dam break accidents, more and more scientists and researchers are involved in the research on the mechanism of tailings pond dam collapse in order to achieve the purpose of effectively preventing and controlling tailings pond disasters. Among them, the research on tailings pond The change of the internal structure of the dam body before the dam failure is one of the important research links. [0003] The research on the stability of tailings dam involves the interdisciplinary fields of soil mechanics, hydraulics and sediment dynamics, which brings difficulties to the study of tailings dam stability, and the instability of tailings dam is not caused by a certain factor , is often the result of the joint action of multiple factors. In essenc...

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Problems solved by technology

Siltation is a ubiquitous phenomenon in porous media. Many scholars have conducted research on silting and found that silting will reduce the permeability of porous media. In tailings dams, the deposition and retention of fine particles or changes in the chemical environment during seepage It will cause silting of the pore seepage channel in the drainage body of the tailings dam, reduce the permeability of the dam body, and increase the position of the dam body's soaking surface, which will lead to a decrease in the stability of the dam body or even a dam failure. After the dam failure, not only Accompanied by severe social impact, it will also bring irreversible environmental effects

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