Novel mine old slope ecological restoration process

Abstract

The invention belongs to the technical field of open-cast mining. According to an ecological restoration method for an old slope left in a mine, prefabricated parts such as anchor rods, frames, breastboards, temporary guardrails and protective nets are adopted and installed on site to form a fast-assembly protective structure, and a traditional retaining wall masonry mode is replaced; and the setof fast-assembly protective structure can realize programmed construction and safe and efficient operation, the soil backfill amount can be greatly increased, the site condition of step ecological restoration is essentially improved, slope water and soil losses can be effectively prevented, water and soil conservation of a step planting base is realized, tall trees can be cultivated, and a slopegreening connection piece is finally formed.

Description

technical field [0001] The invention belongs to the technical field of open-pit mining Background technique [0002] All over the country, there are some closed or closed open-pit mine slopes left over, and the ecological restoration of these slopes has become a major problem in environmental protection and sustainable development in various regions; due to the technical specifications of traditional open-pit mine slopes Defects, as well as treatment techniques, construction methods and other reasons, have caused the ecological restoration of old slopes to become a long-term incurable disease; various local land resources and environmental protection departments are grasping and doing it, and some places have been doing it for decades. It is difficult to recover, only a line of step management can be seen, and the greening of the slope cannot be seen. [0003] The key reason why the ecological restoration of old slopes in mines is ineffective is the defects of traditional c...

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Problems solved by technology

[0003] The key reason why the ecological restoration of old slopes in mines is ineffective is the defects of traditional crafts; for decades, the traditional crafts of slope treatment have always been: building retaining walls along the edges of steps, filling the walls with soil, and then planting grass, shrubs and trees; Narrow steps and gorge, poor operation safety, difficult construction, low pressure bearing capacity of gravity retaining wall, too much space occupied by the wall, etc., resulted in the construction of retaining walls generally low, and the filling volume was seriously insufficient; after investigation : The thickness of the step fill on most mine slopes is less than 1.0m, and the average fill width is 2-3m; this kind of soil foundation cannot form a good site condition for growing plants, especially not suitable for the growth of large trees; soil experts In the study of the southern region, on the exposed rock slopes, due to the high annual temperature and large temperature difference, the depth of the constant temperature layer of the surface soil is greater than 1.0m; , it is impossible to raise and reproduce tall trees at all, and at most only some low shrubs can grow; piece

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