High water-containing mud curing agent for mine filling and using method thereof

Abstract

The invention discloses a high water-containing mud curing agent for mine filling and a using method thereof. The curing agent consists of a component A and a component B, wherein the component A consists of alum, sulfuric aluminate and / or ferrous aluminate and / or high-aluminum cement clinker, amorphous SiO2 superfine powder and pelletized blast furnace slag; the component B consists of solid water glass, alkali carbonate, lime and gypsum; and the components are ground into solid fine powder materials of 200 meshes with screen residue of not more than 10 percent, and the solid fine powder materials are mixed uniformly to form the component A and the component B respectively. In use, the component A and the component B are prepared into aqueous slurry respectively, the slurry B is delivered together with mud, the slurry A is separately delivered, and the slurry in double pipes is mixed and cured after the slurry is delivered to a filling field. The strength of the filled cured body in 7 days is 0.5 to 3.5MPa, and the strength of the filled cured body in 28 days is 1 to 5MPa. The high water-containing mud is cured by using a composite gel system, so that the water content and the condensation rate of the mud are improved, the early strength of the mud is increased, and the later strength of the mud is continually increased.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-water slurry curing agent for mine filling and a using method thereof. Background technique [0002] Due to the strong water absorption characteristics of clay, and after absorbing water, it becomes soft and becomes plastic or even liquid, its mechanical properties are seriously deteriorated, and its deformation is serious, so it is difficult to strengthen its engineering treatment and utilization. The rational and efficient curing of this high water content clay is a technical problem that the material engineering community has been working hard to solve. The common method of gelling and solidifying it with cement lime and other cementitious materials cannot effectively digest water, so its effect is very limited. A more effective method is to use high alumina cement and / or sulphoaluminate cement clinker to add lime and gypsum (Chinese patent CN1493650) and ...

AI Technical Summary

Problems solved by technology

However, due to the solidification principle based on Portland cement gelling system, its setting speed and early strength are still unsatisfactory, and the potential for later strength growth is limited. Its main application is limited to grouting and anti-seepage, and it is difficult to apply to mines. Roadside support and other engineering applications

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