Pressure-free high-permeability slurry and its preparation method

Abstract

The invention discloses non-pressure high-permeability slurry, and relates to the technical field of geotechnical construction. The components of the slurry comprise water, gelling agents and additives, wherein the gelling agents comprise potash water glass and silica sol; the additives comprise lithium metasilicate, sodium dodecyl sulfate, potassium methyl silicate, silicon tripolyphosphate and an ultraviolet light absorber. A preparation method of the non-pressure high-permeability slurry comprises the following steps: the silica sol, lithium metasilicate and sodium dodecyl sulfate are added to a prepared potash water glass solution sequentially and uniformly mixed, then prepared silicon triphosphate suspension, potassium methyl silicate solution and ultraviolet light absorber emulsion are added sequentially and are uniformly mixed. The non-pressure high-permeability slurry is in a colloidal state, has low viscosity, good penetration and diffusion properties in sandy soil and has good weather resistance and erosion resistibility, a sandy slope treated by the slurry has good water retention capacity and stability, and meanwhile, raw materials are environment-friendly, do not pollute the environment and can be taken as fertilizer for use.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering construction. Background technique [0002] In the fields of highway, railway, water conservancy and mining engineering, sandy slope protection generally adopts technical methods such as spray anchor support and guest soil spraying and planting grass protection. Due to the loose soil and low cohesion of the sandy slope, it is difficult to construct anchor rods (anchor piles) in shotcrete support. When spraying concrete, the spraying wind pressure is easy to blow away the slope soil, which affects the spraying effect, and the whole The protection system needs to be protected only after the construction is completed (or partially completed) and the strength of the masonry concrete reaches a certain level. Soil spraying grass planting protection is to mix the prepared soil with native grass seeds and soil stabilizers, adhesives, water retention agents, etc. It is transported by the...

AI Technical Summary

Problems solved by technology

Due to the relatively high viscosity of the slurry, when the fine sand and aeolian sand are solidified under no pressure, the slurry will flow down the slope after spraying, and only a layer of film will be formed on the surface of the slope, which has a good protective effect on the slope. Poor, cannot be used as reinforcement material for slopes

Therefore, due to the influence of the penetration ability of the grouting slurry and the strength, water resistance and wind erosion resistance of the reinforcement layer, it cannot provide a good solidification protection for the sandy side slope.