Thickening colloid used for treating fire disaster of coal seam

Abstract

The invention discloses a thickening colloid used for treating a fire disaster of a coal seam. The thickening colloid is prepared by mutually mixing and uniformly stirring water, aggregates, and a thickening agent according to the following percentage by weight: a certain amount of tap water, the aggregates accounting for 10% to 20% of the weight of water, and the thickening agent accounting for 0.1-0.5% of the weight of water. The thickening agent is salt-tolerant super absorbent polymer prepared by using an aqueous solution polymerizing method. The prepared thickening colloid has advantages of salt tolerance, water-retaining property, adhesive property, suspension property and stability, and can make different active structures and basic groups in coal inert or undergo irreversible reaction to lose oxidizability, and the spontaneous combustion tendency of the coal is lowered so as to thoroughly prevent the spontaneous combustion of the coal. The thickening colloid has advantages of simpilicity for operation, and convenience for material obtaining, is economical and practical and is especially suitable for fundamental fire control of coal mines.

Description

technical field [0001] The invention relates to a thickened colloid used for coal seam fire control, which belongs to the application field of underground coal mine fire prevention and extinguishing technology. Background technique [0002] Spontaneous combustion of coal is a natural phenomenon that exists objectively, and the heat released by the recombination of coal and oxygen is the root cause of spontaneous combustion of coal. The specific process is: air enters the interior of the coal body along with the cracks in the coal body, and the coal oxygen spontaneously recombines to release a large amount of heat, which is accumulated under certain heat storage conditions. When the accumulated heat can meet the needs of the development of the coal spontaneous combustion process, The temperature of the coal body continues to rise, which eventually leads to spontaneous combustion of the coal. [0003] my country's coal mines have complex conditions, harsh environments, and se...

AI Technical Summary

Problems solved by technology

However, there are still some problems in this technology. For example, the slurry cannot evenly cover the surface of the floating coal, and it is easy to form a ditch phenomenon. The coverage is small, and the slurry has poor adhesion. Roof coal cannot prevent and control the effect, and it is easy to run out of slurry and collapse, causing a large amount of dehydration, deteriorating the underground working environment, and affecting coal quality, etc.

In addition, the slurry and water are easy to separate, and the suspension is poor. Not only is it easy to block the pipeline, but also the water is easy to evaporate. It is easy to cause the danger of water gas explosion when it interacts with high-temperature coal, and the fire prevention effect is not very ideal.