A method of heightening and expanding the volume of ultra-fine tailings reservoir with one-time dam construction using the center line method

Abstract

The invention discloses a method for heightening and expanding the capacity of an ultra-fine tailings reservoir for one-time construction of the dam by adopting the center line method, adopting a staged construction method for heightening and expanding the capacity, and successively stacking the first level of heightening dam body (2), The second-level heightening dam body (3), the third-level heightening dam body (4) ..., construct a row of medium-coarse sand seepage drainage of the level parallel to each other and perpendicular to the axis of the dam body on the top floor of each level of heightening dam body For the blind ditch (9), lay drainage connecting pipes (7) and groundwater collection pipes (11), and bury seepage flower pipes (8) in the medium-coarse sand drainage blind ditch (9) of this level, with a vertical interval of 0.5m~ A layer of high-strength corrosion-resistant geogrid (6) is fully paved at a height of 1.0m. The method of the invention accelerates the consolidation of fine-grained tailings, improves and increases the mechanical strength index of fine-grained tailings, significantly increases the storage capacity of tailings storage, prolongs the service life of production, and relieves the pressure of enterprises to discharge tailings. , At the same time, it also solves the problem of insufficient capacity of some dumps and the accumulation of mining waste rocks.

Description

technical field [0001] The invention belongs to the technical field of tailings pond engineering, and in particular relates to the heightening and expansion technology of tailings ponds for one-time construction of dams, and is particularly suitable for one-time construction of dams and superfine tailings with a content of -200 mesh (-0.074mm) exceeding 82%. Heightening and expansion of mine warehouse. Background technique [0002] Tailings ponds are necessary facilities to maintain the normal production of mining enterprises, and play an important fundamental role in the sustainable and healthy development of the national economy and mining economy. Tailings ponds are also one of the major sources of danger. Once an accident occurs, it will inevitably cause serious damage to the safety of people's lives and property, and pose a serious threat to the environment. Especially in recent years, the global climate has been abnormal, extreme weather conditions have appeared frequ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to heighten the height of the tailings retaining dam of the ultra-fine tailings reservoir of the existing one-time dam and increase the storage capacity. Slow, high safety risk, high cost and other technical problems, and provide a one-time dam construction ultra-fine tailings reservoir using the center line method to increase the height and expansion method

Images