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Flowing water dispersion resistant blocking material and preparation method thereof

A plugging material and anti-dispersion technology, used in earthwork drilling, water conservancy engineering, sealing/isolation, etc., can solve the problems of easy aging of the consolidated body, low plugging efficiency, long setting time, etc., and achieve excellent anti-dispersion. The effect of high capacity, high impact force and high mechanical strength

Active Publication Date: 2018-09-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned prior art, the cement slurry is difficult to retain due to its long setting time and is easily washed away by water, and the plugging efficiency is low and the effect cannot be guaranteed; the setting time of cement-water glass slurry is difficult to control, which is affected by the slurry ratio and the environment Large, resulting in poor slurry diffusion ability, difficult construction operations, and difficult to ensure the plugging effect of inrush water; polyurethane slurry reacts violently with water, and the expansion and solidification rate is too fast, which seriously restricts its diffusion range in the formation, and the slurry is toxic, and the consolidated body Disadvantages such as easy aging
Therefore, it is difficult for conventional dynamic water sealing materials to meet the needs of water inrush disaster control projects. The performance of sealing materials has become a key factor restricting the sealing effect of water inrush in tunnels and underground engineering. There is an urgent need for a low-cost, green, and suitable for Dynamic water sealing material with high flow rate and excellent dispersion resistance

Method used

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  • Flowing water dispersion resistant blocking material and preparation method thereof
  • Flowing water dispersion resistant blocking material and preparation method thereof
  • Flowing water dispersion resistant blocking material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A method for plugging dynamic water, comprising the steps of:

[0087] (1) Weigh 100g of Portland cement with a strength grade of 42.5, dissolve it in 100g of water, stir fully, make slurry A, and set aside;

[0088] (2) The total mass of raw materials is 100g, by weight percentage, xanthomonas polysaccharide 0.3%, polyethylene glycol-20000.2%, sodium alginate 0.2%, water glass 10% (mol number 3.0), and the balance is water, First, dissolve Xanthomonas polysaccharide, polyethylene glycol-2000, and sodium alginate in water in proportion, and then add water glass to it after completely dissolving, and stir thoroughly to make slurry B, which is set aside;

[0089] (3) Mix the A and B grouts prepared in steps (1) and (2) with a volume ratio of 3:1 for grouting, then test the setting time of the grout, the retention rate of the grout and the mechanical strength of the stone body, the results are shown in Table 1 Show.

[0090] Table 1

[0091]

Embodiment 2

[0093] A method for plugging dynamic water, comprising the steps of:

[0094] (1) Weigh 100g of Portland cement with a strength grade of 42.5, dissolve 0.5g of sodium sulfate in 100g of water, stir fully, make slurry A, and set aside;

[0095](2) The total mass of raw materials is 100g, by weight percentage, xanthomonas polysaccharide 1.2%, polyethylene glycol-2000 1%, sodium alginate 1.5%, water glass 10% (mol number 3.0), and the balance is water , first dissolving xanthomonas polysaccharide, polyethylene glycol-2000, and sodium alginate in water in proportion, after being completely dissolved, adding water glass to it, stirring fully, to make slurry B, and set aside;

[0096] (3) The A and B grouts prepared in steps (1) and (2) are mixed and grouted in a volume ratio of 3:1, and then the setting time of the grout, the retention rate of the grout and the mechanical strength of the stone body are tested, and the results are shown in Table 2 Show.

[0097] Table 2

[0098] ...

Embodiment 3

[0100] A method for plugging dynamic water, comprising the steps of:

[0101] (1) Weigh 100g of Portland cement with a strength grade of 42.5, 0.5g of sodium sulfate, and 0.5g of polycarboxylate superplasticizer, dissolve it in 90g of water, stir fully, and prepare slurry A for later use;

[0102] (2) The total mass of raw materials is 100g, by weight percentage, xanthomonas polysaccharide 1.2%, polyethylene glycol-2000 1%, sodium alginate 1.5%, water glass 10% (mol number 3.0), and the balance is water , first dissolving xanthan polysaccharide, polyethylene glycol-2000, and sodium alginate in water, after being completely dissolved, adding water glass to it, stirring fully, to make slurry B, and set aside;

[0103] (3) Mix the A and B grouts prepared in steps (1) and (2) with a volume ratio of 3:1 for grouting, then test the setting time of the grout, the retention rate of the grout and the mechanical strength of the stone body, the results are shown in Table 3 Show.

[010...

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Abstract

The invention discloses a flowing water dispersion resistant blocking material and belongs to the technical field of preparation of injecting paste materials. The blocking material is composed of components A and B, wherein the component A comprises a hydraulic cementing material and water, and a water-binder ratio is 0.6-1 to 1; the component B comprises the following components in percentage byweight: 0.3-1.2% of water-soluble vegetable glue, 0.2-1% of polymer polyol, 0.2-1.5% of alcohol polysaccharide, 10-44% of sodium silicate and 52.3-86.3% of water. The blocking material disclosed by the invention has the advantages of being low in cost, adjustable in setting time, high in dispersion resistance, high in slurry retention rate and excellent in consolidating mechanical property, beingsafe and non-toxic, and the like. Due to tests, the slurry retention rate reaches 90% or higher within 30 minutes at water velocity of 1.5m / s, the highest slurry retention rate can reach 97%, and excellent effects are achieved.

Description

technical field [0001] The invention relates to the technical field of grouting material preparation, in particular to a hydrodynamic dispersion-resistant plugging material and a preparation method thereof. Background technique [0002] In recent years, my country's high-speed railways, expressways, urban rail transit, large-scale water conservancy and hydropower projects, and deep mine construction have entered a period of rapid development. Among them, a large number of tunnels and underground projects have encountered faults, karst and water-rich broken rock areas, and the construction process is very easy. Induced sudden flood disasters, resulting in delays in the construction period, casualties, and property losses. [0003] Water inrush disasters usually occur when the disaster water body enters the construction project through infiltration, extrusion impact, direct gushing, etc. Among underground engineering disasters, water inrush disasters are the most frequent and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02B3/16E02D31/02E21B33/13C04B111/70
CPCC04B28/04C04B2111/70C04B2201/50E02B3/16E02D31/02E21B33/13C04B22/002C04B24/38C04B24/32C04B12/04
Inventor 李术才李召峰张健齐延海
Owner SHANDONG UNIV
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