Method for determining reclamation construction sensitive area in coal mining subsidence land

Abstract

The invention relates to a method for determining a reclamation construction sensitive area in a coal mining subsidence land and belongs to the fields of mining technique, land utilization and land reclamation. The method for determining the reclamation construction sensitive area in the coal mining subsidence land comprises the following steps of: dividing ground units, and rasterizing the ground units; predicting subsidence according to a mining stage, and acquiring a surface deformation contour line of each mining stage; by virtue of interpolating and fitting functions of a GIS (geographic information system), acquiring a horizontal deformation grid graph and a curvature deformation grid graph of the earth surface of each mining stage; realizing conversion from the surface deformation contour line to the deformation grid graph; and determining a reclamation construction sensitive ground unit of each mining stage according to an anti-horizontal-deformation threshold value and an anti-curvature-deformation threshold value. The method provided by the invention is simple and can be easily understood, implementation of the actual reclamation construction can be easily guided, and reclamation failure caused by improper construction opportunity and area selection in an underground mining coal mine mining and reclamation process is avoided. The method provided by the invention is applicable to a single-horizontal (nearly horizontal) coal bed and is an important part of an underground mining coal min mining and reclamation technology.

Description

technical field

[0001] The invention belongs to the field of mining technology, land utilization and land reclamation, and particularly relates to the mining and recovery work of subsidence land under high water level-plain mining area coal mining. Reclamation of sensitive ground units in the process of construction, scientifically guide the reclamation construction. Background technique

[0002] There are many people and little land, and arable land resources are very scarce. This is the basic national condition of our country. With the rapid development of the economy, the demand for energy is increasing day by day. Coal, as the most important energy source in my country, accounts for about 70% of the primary energy consumption. Since more than 90% of my country's coal production comes from underground mining, and most of them use longwall The whole caving mining method will inevitably lead to subsidence of the land, resulting in the subsidence and damage of a large amount...

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