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

A technology for coal mining subsidence and determination method, which is applied in the field of recovery while mining, can solve problems such as secondary damage and reclamation failure, and achieve the effects of easy operation, avoiding reclamation failure, and simple and easy-to-understand methods

Active Publication Date: 2015-04-01
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, many projects suffered secondary damage during or after construction, resulting in failure of reclamation

Method used

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

Examples

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Embodiment

[0040] This example is a mining area with a high water level, the average thickness of the coal seam is 9.0m, and the burial depth is 800m; ° between.

[0041] The steps of a method for determining dynamic sensitive areas of reclamation construction in coal mining subsidence land in this embodiment are as follows:

[0042] 1) Divide the ground unit and rasterize the ground unit.

[0043] 11) Divide the ground into grid ground units, the length of each side of the grid ground unit is H / 20, and the 10 digits of the number obtained are rounded; H is the average mining depth, and the unit is meters; thus, the size of the ground unit in this embodiment is determined to be 40m×40m, 7875 ground units in total.

[0044] 12) Grid the ground unit, the grid unit is selected as 10m×10m; each ground unit has 16 grid units.

[0045] 2) Predict the subsidence according to the mining stage, and obtain the surface deformation contours (including horizontal deformation contours and curvature...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/00
Inventor 胡振琪肖武
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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