Piling method for sloping field type dry red mud disposal and water drainage structure thereof

Abstract

The invention discloses a building method of sloping field-typed dry process red mud yards and a draining structure thereof; wherein, the method is to build dam bodies around the red mud piling-up area of the sloping field landform and in the central part thereof; by the built dam bodies, the selected red mud piling-up area of the sloping field landform is divided into two or more than two small red mud piling-up areas, draining wells are arranged at the central part and the lowest point of each small red mud piling-up area respectively, and rain water overflow pipes are built on the initial dams of each small red mud piling-up area. In the invention, rain water overflow can be prevented by the rain water overflow pipes arranged on the initial dams, the problems of flood prevention, fastness of dam foundation and environmental pollution of red mud piling-up yard are solved, and the arrangement of the double silos of an initial draining well and a permanent draining well solves the problem that the project of excavation and filling of sloping field landform red mud yards is large. Therefore, by adopting the technical proposal of the invention, not only the amount of construction of sloping field landform red mud yards is reduced and the safety of yard use is improved, but also the early cost for building factories can be saved.

Description

technical field [0001] The invention relates to a construction method of dry process red mud stockpile and its drainage structure, in particular to a construction method and drainage structure of slope-type dry process red mud stockpile, and belongs to the technical field of dry process red mud disposal. Background technique [0002] Red mud is the waste residue produced in alumina production. Except for a small amount that can be comprehensively utilized, each alumina plant needs to build a special red mud storage yard to stack red mud. There are two main methods of red mud disposal: wet method and dry method. It is generally believed that the red mud slurry entering the storage yard has a moisture content of more than 47% as a wet process, and less than 47% as a dry process. Wet storage yards usually have a large amount of surplus water accumulated in the storage yard, which makes the wetting line of the storage yard continue to rise, and the safety hazard of the dam body...

AI Technical Summary

Problems solved by technology

The sloping red mud stockyard will face many new problems: for example, if each plot is leveled into a shape with high sides and low middle, and the drainage well is set in the center of the plot, the part with high elevation will require a large amount of excavation. , the part with low elevation has a large amount of filling, and the initial dam construction work is also very large, and the investment of the entire storage yard will be large

If the terrain is flattened into a single-slope shape, and the drainage shaft is not set at the center but at the lower level, it will bring two problems: first, each community is like a sloping bowl, and the rainwater is easy to flow out during heavy rains. The overflow of the low initial dam endangers the safety of the dam and pollutes the environment; second, the low initial dam is close to the drainage shaft, and the red mud in the area near the initial dam is difficult to dry and consolidate. Faced with the weak foundation of the sub-dam

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