Method for reclaiming territories damaged by open extraction of deposits

FIELD: mining industry, possible use for reclamation of damaged lands in agriculture, power-construction industrial branches.

SUBSTANCE: method includes, after extraction of quarry field is finished, closure of each quarry by reinforced structures made in form of sleeves of geo-synthetic material and filled with milled construction wastes, while ends of sleeves are sewn shut. Reinforced structures are placed one after another, closely to each other. On top of reinforced structures, draining layer is filled, then a layer of stripping rocks and finally a layer of potentially fertile soil with following seeding thereof with perennial grasses, brushes and trees.

EFFECT: decreased laboriousness and costs of restorative operations.

3 cl, 1 dwg

 

The invention relates to the mining and processing industry and can be used to restore disturbed lands in agriculture, construction and energy industries.

There is a method of recovery of disturbed soils (1) in surface mining, including mining, moving and storage in separate tape stockpiles of topsoil and overburden, mining career fields, moving, and packing overburden and topsoil. However, restoration of disturbed lands in this method occurs over a very long period, and the soil exposed to wind and water erosion.

The closest technical solution, selected as a prototype, is the way of restoration of disturbed lands in open field development (2), including separate recess, moving and storage in separate tape stockpiles of topsoil and overburden, mining career fields, mined-out space and its alignment in the overburden with the subsequent placement of the topsoil. The disadvantage of this method is the extraction of large volumes of soil to create the fertile soil layer, which in turn leads to the formation of large areas of disturbed land, rising labor costs and mn is a significant increase in the cost of the rehabilitation works.

The proposed solution provides cost reduction and cost recovery operations.

This is achieved by a method for reclamation of lands disturbed by surface mining fields, including separate recess, moving and storage in separate tape stockpiles of topsoil and overburden, production career field, its alignment and placement of soil, according to the invention, after the establishment of career fields, each of the pits pre-poured construction waste to the groundwater level, and then block by stacking in series, parallel and close to each other armconstruction made of geosynthetic material in the form of sleeves of a certain diameter and length, with each of the sleeves is made airtight and filled with construction waste pre-crushed to a certain size fractions, then on top of armconstruction stack drainage layer, which then occiput: first layer of overburden, and then a layer of potentially fertile soil, the thickness of each layer should be not less than 0.3 meters, with the subsequent formation of perennial grasses and planting trees and shrubs.

Using armconstruction made of geosynthetic mother of the La in the form of sleeves of a certain diameter and length and filled with crushed construction waste specific size fractions, simplifies recovery operations and their costs for future recovery and use of land disturbed by surface mining of deposits, due to the fact that there is no need in the mined-out space in the overburden and soil. In addition, the use of armconstruction allows you to quickly block produced career, without preliminary backfill construction waste, if the ground water level of the pit is deep. In addition, using the flexibility of armconstruction, you can create the required topography and landscape of the restored site. Granular material, clothed in geosynthetic material can withstand a large tensile stress, as geosynthetic material, in this case operates as an external reinforcing material. Therefore restored in this way the land can be used for other commercial purposes.

Implementation of the present invention reduces the cost of rehabilitation services, through the use of construction waste that is constantly forming in the reconstruction, demolition and repair of buildings and structures, as well as eliminating the need for extraction of large volumes of soil to create a fertile layer. Given the fact that is constantly forming Stroitelnye waste taken to landfills for household and industrial waste, the implementation of the present invention will improve the ecological situation.

The drawing shows the circuit implementation of this method.

The method is as follows.

First on the area of disturbed land perform planning work. The mean absolute stamp set with the feasibility study. Area planning is performed with the legend of the planned surface of the slight slope toward the General lowering of the earth's surface. Then make a preliminary backfilling of open pits (1) construction waste management (2) with different particle size fractions to the groundwater level. Then proceed to the slab quarries (1) pre-formed for this purpose by armconstruction (3). What sleeve (4) of the geosynthetic material with sewn ends fill crushed construction waste management (2), which are fed through the injector (not shown)installed at one end of the sleeve by means of compressed air. Then stack armconstruction (3) close and parallel to each other, gradually closing the mined-out area of each of the pits. Then occiput draining layer (5) of crushed construction waste particle size fractions of no more than 200 mm and a thickness of not less than 0.3 meters. On top of the drainage layer occiput SL is th (6) of overburden, and on it is placed a layer (7) of the potentially fertile soil of a certain thickness, but not less than 0.3 meters, with the subsequent formation of perennial grasses and planting trees and shrubs.

Sources of information

1. USSR author's certificate No. 1062392, CL E 21 41/00, 1983.

2. Patent Of Russia №2109427, CL. And 01 In 79/02, 1988.

1. The way the reclamation of lands disturbed by surface mining fields, including separate recess, moving and storage in separate tape stockpiles of topsoil and overburden, production career field, its alignment and placement of the soil layer, characterized in that after running out of career fields, each of the pits pre-poured construction waste to the groundwater level, and then block by stacking in series, parallel and close to each other armconstruction made of geosynthetic material in the form of sleeves, each sleeve is sealed and filled with construction waste with different particle size fractions, then at the top of the stack armconstruction drainage layer, which then occiput: first layer of overburden, and then a layer of potentially fertile soil, the thickness of each layer should be not less than 0.3 m, with the subsequent formation of perennial grasses and in the manufacture of trees and shrubs.

2. The method according to claim 1, characterized in that the quality of construction waste use accidents burnt brick, concrete, reinforced concrete, ceramic tile.

3. The method according to claim 1, characterized in that the draining layer can pour construction waste, and the size of the fight should be 150-200 mm



 

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