Building aggregate mine in-situ soil improvement and greening method

Abstract

The invention discloses a building aggregate mine in-situ soil improvement and greening method. The building aggregate mine in-situ soil improvement and greening method comprises the following steps:facility repairing; gully backfilling; protection of a soil discharge slope surface; in-situ improvement: spreading improved materials prepared by mixing on the surface of a dump, and mixing by loosening and raking; in-situ greening: planting tree species in an improved soil layer according to the spacing of 2-4 m; spraying bonding slurry containing mixed grass shrub seeds by using a spraying andsowing vehicle, and carrying out shallow consolidation on the disturbed surface layer; after shallow layer consolidation is finished, spreading straws on the surface to cover the surface; and maintenance management: carrying out seed supplement, seedling supplement, fertilization and pest control. The building aggregate mine in-situ soil improvement and greening method has the beneficial effects that based on scientific determination of plant species and rational allocation, recovery of vegetation of aggregate mine dumps in most of areas including arid and semi-arid areas, warm temperate zonesand subtropical and tropical areas in China can be met basically, and if measures of anti-seepage isolation, pollution control measures and the like are added reasonably, recovery of vegetation of special sites such as a nonferrous metal mine waste stone yard and landfill site can also be met.

Description

technical field [0001] The invention relates to the field of aggregates, and mainly relates to an in-situ soil improvement and greening method for building aggregate mines. Background technique [0002] Construction aggregate is one of the important resource-based products, and it is the most widely used, largest quantity and irreplaceable bulk basic building material in construction projects. With the development of my country's economy and society, the construction of ecological civilization has risen to a national strategy, and the protection and restoration of the ecological environment has become one of the central tasks in the development of the construction aggregate industry. At present, my country's sand and gravel mines are in a critical period of transformation from traditional mines that are "small, scattered, dangerous, and low in mess" to large-scale, industrialized, modernized, environmentally friendly, and harmonious green aggregate mines. The dump site is o...

AI Technical Summary

Problems solved by technology

[0003] At present, the main methods of vegetation restoration in construction aggregate mine dumps include natural enclosure, alien soil afforestation, and spraying greening. Due to the poor soil layer and loose structure of the dump site, serious water and soil erosion, low water storage and moisture conservation capacity, vegetation restoration is common. Prominent problems such as high cost, poor effect, slow speed, and difficult storage

Among them, natural enclosure is the most commonly used method with the lowest cost, but it takes a long time to restore vegetation, cannot effectively prevent soil erosion, and the effect of vegetation sparseness is poor; alien soil afforestation is the most widely used and popular method, but it has high labor costs and construction costs. The efficiency is low, and soil erosion cannot be effectively prevented due to the lack of ground cover plants; alien soil spraying is a method that has been gradually promoted in the past 20 years and has a good vegetation recovery effect, but the comprehensive cost of manpower, equipment, and materials is high, and professional construction is required team

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