Grouting material, preparation method and application thereof in seepage-proofing and water-plugging construction

A technology of grouting materials and cement, which is applied in chemical instruments and methods, mining equipment, shaft equipment, etc., and can solve problems such as lack of erosion resistance, failure to prevent leakage and blockage, and easy washing of grout by water.

Pending Publication Date: 2020-11-06
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current grouting slurry has no erosion resistance and high cost. The injected slurry is easily washed away by water, resulti

Method used

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preparation example Construction

[0033] The present invention also provides a preparation method for the grouting material described in the above technical solution, comprising the following steps:

[0034] (1) mixing clay with water to obtain a base slurry;

[0035] (2) mixing the base slurry obtained in the step (1) with bentonite and cement to obtain clay cement slurry;

[0036] (3) The clay cement slurry obtained in the step (2) is mixed with water glass and a water reducing agent to obtain a grouting material.

[0037] The present invention mixes clay with water to obtain a base slurry.

[0038] In the present invention, there is no special limitation on the operation of mixing the clay and water, and the technical scheme of mixing materials well known to those skilled in the art can be adopted. In the present invention, the mixing of the clay and water is preferably carried out under stirring conditions; the stirring method is preferably mechanical stirring; the stirring speed is preferably 90r / min to...

Embodiment 1

[0052] The grouting material is prepared from the following raw materials in parts by mass: 760 parts of clay, 90 parts of cement, 40 parts of bentonite, 750 parts of water, 14 parts of water glass and 3 parts of water reducer.

[0053] In the present embodiment, clay is the clay below 1m of the silt layer of Saihu Lake in Chengmenshan Copper Mine, the plastic index is 25.26, and the mass content of minerals in the clay is 51%; water is groundwater in karst area, and the pH value is 7.1; cement is P.O4 2.5 grade Portland cement; the water reducer is sodium lignosulfonate, its relative molecular weight is 531; the concentration of water glass is 35 degrees Baume, and the modulus is 3.0; the bentonite is organic bentonite.

[0054] The preparation method of grouting material in the present embodiment is:

[0055] (1): Put the clay into the dryer, dry it at 105°C for 12 hours, then crush it with a pulverizer, transfer it to a sieve with an aperture of 1 cm through a transmission ...

Embodiment 2

[0060] The grouting material is prepared from the following raw materials in parts by mass: 760 parts of clay, 85 parts of cement, 60 parts of bentonite, 700 parts of water, 8 parts of water glass and 2 parts of water reducing agent.

[0061] In the present embodiment, clay is the clay below 1m of the silt layer of Saihu Lake in Chengmenshan Copper Mine, the plastic index is 25.26, and the mass content of minerals in the clay is 51%; water is groundwater in karst area, and the pH value is 7.1; cement is P.O4 2.5 grade Portland cement; the water reducer is sodium lignosulfonate, its relative molecular weight is 531; the concentration of water glass is 35 degrees Baume, and the modulus is 3.0; the bentonite is organic bentonite.

[0062] The preparation method of grouting material in the present embodiment is:

[0063] (1): Put the clay into the dryer, dry it at 105°C for 12 hours, then crush it with a pulverizer, transfer it to a sieve with an aperture of 1 cm through a transmi...

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PUM

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Abstract

The invention provides a grouting material and a preparation method thereof, and belongs to the technical field of underground engineering materials. The grouting material provided by the invention comprises the following raw materials: 760-800 parts of clay, 80-120 parts of cement, 30-70 parts of bentonite, 700-800 parts of water, 5-15 parts of water glass and 1-5 parts of a water reducing agent.According to the invention, bentonite is used for improving the clay basic slurry, and complex reaction with a cement hydration product is carried out, so that the water flushing release resistance,strength and permeation resistance of the slurry are improved, and the product has excellent economical efficiency; the water glass accelerates the gelling time of the material and generates relatively stable micelles with the clay cement slurry; the water reducing agent reduces the porosity of the material and improves the strength and impermeability of the material. The initial setting time of the grouting material is 75min, the final setting time of the grouting material is 135min, and the slurry retention rate reaches 93.82% when the water flow speed is 0.5m/s after grouting.

Description

technical field [0001] The invention belongs to the technical field of underground engineering materials, and in particular relates to a grouting material, a preparation method thereof and an application in anti-seepage and water blocking construction. Background technique [0002] The distribution area of ​​groundwater in my country's karst areas is about 828,300 square kilometers, and it exists in the caves and cracks of carbonate rocks (limestones). According to statistics, 60% of mine accidents are related to groundwater, and with the increase of mining depth, water damage is becoming more and more serious. Mine surge and water inrush have become one of the main disasters restricting mine safety; They also face the same problems and challenges, especially when constructing tunnels under water-rich geological conditions, the problem of construction water gushing is particularly prominent, which greatly affects construction efficiency and economic efficiency. Therefore, m...

Claims

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Application Information

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IPC IPC(8): C04B28/26C09K8/506C09K8/504C09K8/508C09K8/46E21D11/10E21D11/38C04B111/27
CPCC04B28/26C04B2111/00724C04B2111/27C09K8/46C09K8/5045C09K8/506C09K8/5086E21D11/10E21D11/38C04B7/02C04B14/10C04B14/104C04B24/18C04B22/002
Inventor 张可能王颖卓彭国威张云毅朱考飞但新民于佳维
Owner CENT SOUTH UNIV
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