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Waste dump extinguishing method

A technology of gangue hills and fire areas, which is applied in the field of mineral waste management, can solve the problems of gangue hills that are easy to recombust harmful gases, and achieve the effects of saving construction costs, improving environmental conditions, and reducing investment

Active Publication Date: 2012-06-20
DATONG COAL MINE GRP
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that existing gangue dumps are easy to recombust and produce a large amount of harmful gas, the present invention provides a gangue dump fire extinguishing method

Method used

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Embodiment Construction

[0008] The gangue hill fire extinguishing method is realized by the following steps: a. Use an infrared thermometer and a CO gas detector to detect the gangue hill surface temperature and CO gas concentration, and initially grasp the spontaneous combustion of the coal gangue hill; b. The surface of the area is arranged according to the grid spacing of 3-5m, and the infrared thermometer, CO portable instrument and multi-parameter gas tester are used to calibrate and draw the isotherm and gas contour; c. Select a favorable location for vertical drilling , to test the temperature in the borehole so as to determine the depth of the fire zone or latent ignition point; d, carry out the classification of the gangue dump and the investigation of potential safety hazards, and then treat it by stage; And repair the horse road, and then cover with loess; f, after the loess is covered, drill holes and grout. When drilling, the flushing fluid is a colloidal material with variable viscosity ...

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Abstract

The invention concretely relates to a waste dump extinguishing method to solve problems of easy combustion resumption and generation of a large amount of harmful gases of present waste dumps. The method comprises the following steps: 1, initially grasping the spontaneous combustion case of a waste dump; 2, distributing points on the surface of the fire zone of the waste dump according to a 3-5m grid space, and calibrating and drafting an isothermal line and a gas isoline; 3, determining the depth of the fire zone or hidden combustion points; 4, carrying out waste dump classification and potential safety hazard screening, and treating in a zoning installment mode; 5, carrying out extinguishing cooling on the waste dump with naked fires, carrying out slope cutting, grading and packway construction on side slopes, and carrying out loess coverage; 6, punching and grouting, wherein a flushing solution used in punching is a colloid material, the end angle of a drill is 45DEG, and a composite gel extinguishing material is adopted as a grouting slurry; and 7, carrying out reclamation and ecological reconstruction according to a case that the loess layer thickness is 0.5-0.6m, the vibratory compaction frequency is 6-8, the compaction coefficient is 0.90-0.95, and green side slope plants adopt shrubs. The method has the advantages of elimination of threats of factors of landslip, harmful gas pollution and the like to residents, land reclamation, and repeated extinguishing investment reduction.

Description

technical field [0001] The invention relates to a treatment method for mineral waste, in particular to a gangue hill fire extinguishing method. Background technique [0002] Coal gangue is solid waste produced during coal mining, washing and processing. A large amount of coal gangue will not only occupy land and affect the ecological environment, but the gangue leaching water will pollute the surrounding soil and groundwater. Combustibles will spontaneously ignite under suitable conditions, and emit harmful gases such as sulfur dioxide, nitrogen oxides, carbon oxides and smoke to pollute the atmospheric environment and affect the health of residents in mining areas. If the storage method of coal gangue is improper, disasters and accidents such as landslides, collapses, and collapses may also occur. [0003] Most of the coal gangue in the gangue hill is naturally accumulated according to the geographical conditions of the mining area. The structure of the gangue hill is loos...

Claims

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Application Information

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IPC IPC(8): A62C3/06
Inventor 张有喜于斌田利军樊少武张存健侯志鹰刘文轩郭万忠冯月新王恩常晓华孟祥斌申海军方娜王玉明赵晨德吴跃平
Owner DATONG COAL MINE GRP
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