Recovery type subsidence land treatment method

Abstract

The invention discloses a recovery type subsidence land treatment method. The method comprises the following implementation steps that S1, surrounding investigation planning is conducted after water pumping; s2, planning area division and planning an excavation position, an excavation depth and an excavation path; s3, deep digging and shallow filling are conducted, and a strip type road is formed; s4, excavating a road, transporting and backfilling, and transporting fertile surface soil to the land reclamation area; and S5, performing regional planning management to form a fish culture region or a lake ornamental region. The method is mainly used for solving the problem of the coal mine subsidence area, the key problems that transportation is difficult and large equipment cannot enter a construction site in the treatment process due to the large sludge precipitation amount are solved, the bottleneck restricting the project progress is broken through, the construction progress is remarkably improved, earthwork transportation of the reclamation area is accelerated, and the construction period is shortened. The treatment time of the reclamation area of the coal mining subsidence land is greatly shortened, the farmland protection responsibility can be achieved, and the farmland protection red line is strictly protected.

Description

technical field [0001] The invention relates to the technical field of land treatment in coal mining subsidence areas, in particular to a "return-type" subsidence land treatment method. Background technique [0002] Since the large-scale mining of coal resources in the 1970s, it has also brought many negative impacts while driving social and economic development. Mining of coal resources is easy to form goafs, resulting in the loss of lower support of the overlying strata, and the destruction of the original balance conditions, resulting in movement, deformation, destruction and collapse, resulting in a series of geological disasters such as ground subsidence and ground fissures. The impact of goaf subsidence on the geological environment is mainly manifested in two aspects: disturbance and damage to the stratum structure and change of the shallow groundwater environment, which causes the water level to rise, the surface is exposed, and the perennial water accumulation area ...

AI Technical Summary

Problems solved by technology

The impact of goaf subsidence on the geological environment is mainly manifested in two aspects: disturbing and destroying the stratum structure and changing the shallow groundwater environment, resulting in the rise of the phreatic water level, the bare surface, and the formation of perennial water accumulation areas. Reduced or eliminated production, huge agricultural economic losses; and the increase of ground slope has seriously affected the cultivation and travel of local farmers

Due to the long-term erosion of water resources in the subsidence area, the soil is soft, the water surface is large, and the water is deep. Large-scale machinery and equipment cannot directly enter the core area to carry out the process of "digging deep and shallow pad" to control the coal mining subsidence; the mud filling system is also not good. implemented in the flooded area

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