A kind of domestic sludge ash-based fire zone roadway blocking material and preparation method thereof

Abstract

The invention relates to the field of coal mine construction, in particular to a domestic sludge ash-based fire region roadway blocking material and a preparation method thereof. The blocking materialis prepared from the following raw materials of portland cement clinker, aluminate cement, domestic sludge ash, flint clay, polycarboxylate superplasticizers, naphthalene water reducers, triethanolamine, calcium chloride, dihydrate gypsum, aluminum sulfate, polypropylene fiber, short cut basalt fiber and water. The blocking material has high temperature resistant performance; through the couplingeffect of three kinds of ingredients of aluminate cement, flint clay aggregate and basalt fiber, the sealed material still has certain pressure-resistant and anti-cracking performance under the effect of coal mien fire region high-temperature air flow; the harmful gas can be effectively isolated; the fast sealing and blocking is realized; the safety of coal mine workers and rescue personnel can be ensured. The preparation process of the blocking material is simple; in the preparation process, dry materials only need to be proportionally mixed and fed to an underground position; then, a solution mixed with additives is added for uniform stirring; a single pipe is used for conveyance; the conveying process is greatly simplified.

Description

Technical field [0001] The invention relates to the field of coal mine construction, in particular to a roadway plugging material in a domestic sludge ash-based fire zone and a preparation method thereof. Background technique [0002] With the continuous increase of the urban population in our country, the discharge of urban domestic sewage is increasing. As the solid waste in the sewage treatment process, the output of sludge has also increased sharply, resulting in the increasingly serious problem of sludge disposal. Most of the sludge is organic humus, and it also contains a large number of pathogens, microorganisms, copper, lead, zinc, mercury and other heavy metal harmful components, and even a small amount of trace elements and difficult-to-degrade organic pollutants. If not handled properly, it will be serious Destroy the ecological environment. At present, the domestic sludge treatment in my country is mostly stacked or landfilled. This treatment method takes up a lot of...

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Problems solved by technology

[0005] The invention proposes a domestic sludge ash-based roadway plugging material in a fire area and its preparation method, which solves the limitations of the traditional plugging materials. In the mine fire control work, there is an urgent need for an easy-to-construct, high-temperature-resistant , can be quickly constructed, and can still ensure airtightness under the action of mine pressure The technical problem of the roadway sealing material in the fire zone

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