METHOD FOR RECLAMATION OF DISTURBED LAND PLOTS WITH THE USE OF SOIL FOR RECLAMATION Russian patent published in 2018 - IPC E21C41/32 

FIELD: construction.

SUBSTANCE: invention relates to construction and mining and can be used at the technical stage of land reclamation, disturbed by pit excavations. Method comprises laying the worked out space, its alignment and laying of the soil layer. In this case the soil for reclamation is obtained from building and demolition wastes processed in a crushing plant to the state of a crushed stone-sand mixture, wood wastes and soil formed during excavation, not contaminated with hazardous substances, in this case the disturbed land plot is divided into conditional technological maps of production of works of 1 hectare (100 m × 100 m), deliver ingredients for the production of soil for reclamation in a technological map for formation of technological layers, including the steps: a) pouring and leveling the crushed stone and sand mixture, b) backfilling and leveling of soil formed during excavation, not contaminated with hazardous substances, c) mixing and compacting with construction equipment, d) backfilling and leveling the reinforcing layer from wood waste, moving to the next technological map and repeating steps a)–d), wherein, the technological stages are formed with a capacity of not more than 1.5 m until the level of the surface is reached, and on the final technological stage an anti-filtration layer is formed from clay soils with slope 2° to the marginal parts of the reclamated land and drain the draining layer from the soil formed during excavation and not contaminated with hazardous substances, capacity 0.3±0.2 m, on top of which lay a fertile soil layer with a capacity of at least 0.25±0.05 m, after which the biological stage of reclamation is carried out.

EFFECT: increasing efficiency of the use of construction waste and demolition in production.

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