Greening method of self-ignition coal gangue hill

A technology of coal gangue and spontaneous combustion of coal, which is applied in the field of coal gangue disposal and utilization, can solve the problems of not considering greening, unsatisfactory effect, recombustion, etc., and achieve the effects of beautifying the local landscape, reducing treatment costs, and saving soil consumption

Active Publication Date: 2007-08-08
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

Many mining areas in China have also carried out the practice of coal gangue hill greening. More than 10 gangue hills have been greened. Most fire extinguishing methods use alkaline grout deep grouting or surface covering oxygen barrier fire extinguishing, but the effect is often unsatisfactory and re-ignition often occurs

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  • Greening method of self-ignition coal gangue hill
  • Greening method of self-ignition coal gangue hill

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Embodiment Construction

[0036] A kind of spontaneous combustion coal gangue mountain greening technical method that the present invention proposes, in conjunction with embodiment is described in detail as follows:

[0037] 1) Preliminary shaping of the terrain of the coal gangue hill: According to the specific terrain conditions, the slope of the gangue hill is organized into reverse slope terraces, firstly, the slope δ of the original slope 31 is reduced to the slope β of the design slope 32 (β≤30° ); then build terraced fields according to design, the field surface width of design terraced field 33 is 1~3 meter, and anti-slope inclination angle α is 2 °~8 °;

[0038] 2) Fire extinguishing and cooling: Before shaping, determine the area and potential burning depth of the coal gangue hill fire area, and carry out grouting (using alkaline slurry containing soil) to the fire area (with obvious smoke or open flame) to extinguish the fire; during shaping, If a new area with obvious smoke or open fire is ...

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Abstract

The invention relates to a method for greening the mine, comprising that based on the competition of mine, furnishing the slope into reverse-slope inclined terrace, using slurry method to extinguish fire and reducing temperature, plating disinfector on the face of mine, using inertia material to cover and roll the face of mine, covering soil and building soil and water conservation, greening and managing. The invention can combine the fire extinguish and green techniques.

Description

technical field [0001] The invention belongs to the technical field of environment, ecology and solid waste disposal and utilization, and in particular relates to a technical method for the disposal and utilization of coal gangue hills. Background technique [0002] Coal gangue is an inevitable product of coal mining and processing, and is the main source of pollution in mines. Generally speaking, coal gangue accounts for 10-30% of raw coal production. According to incomplete statistics, the cumulative amount of coal gangue in China has reached more than 3.5 billion tons. In 2005, 230 million tons of coal gangue were discharged in one year. At present, the utilization rate of coal gangue in China is less than 30%, and a large amount of coal gangue still has to be piled up in the open air. Coal gangue stacked in the open air is very prone to weathering. Under the action of wind and rain, the weathered particles will float and flow with the wind and rain, polluting the atmosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/00A01B11/00B09B1/00A61L2/16
CPCY02A40/22Y02W30/30
Inventor 胡振琪陈胜华
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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