A kind of hole-sealing material for karst water gushing, its preparation method and hole-sealing method

A sealing material and karst technology, applied in the field of sealing material for karst water gushing and its preparation, can solve the problems of difficult to effectively plug the gap of the pipe wall, unable to achieve the sealing effect, affecting the grouting effect, etc., and achieve water plugging. The effect of convenient construction, improved sealing efficiency and good water stability

Active Publication Date: 2020-07-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In high-pressure water-rich karst areas, during the construction of underground projects, water inrush disasters that may occur at any time will seriously affect the underground. The water inflow is large, the water pressure is high, and the flow rate is fast. It is difficult to effectively seal the gap due to the impact of gushing water. The high water pressure and high flow rate of karst groundwater will wash away and dilute the sealing material, which cannot achieve the sealing effect, thus affecting the grouting effect

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  • A kind of hole-sealing material for karst water gushing, its preparation method and hole-sealing method

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Comparison scheme
Effect test

Embodiment 1

[0040] A pore sealing material for karst water gushing according to the present invention, comprising the following components in parts by weight:

[0041] Portland cement 80 parts,

[0042] 10 parts of fly ash,

[0043] 10 parts of bentonite,

[0044] Sodium carboxymethyl cellulose 0.05 parts,

[0045] 30 parts of water,

[0046] 3 parts water glass,

[0047] 1 serving of hemp silk.

[0048] In the present embodiment, the bentonite that adopts is organic bentonite; The concentration of water glass is 42 Baume degrees; Sodium carboxymethyl cellulose is high-viscosity cotton fiber; Water is groundwater in the foundation pit, and its pH value is 7.1; Silicate The cement is P.O 42.5 grade Portland cement; the fly ash is Class II C fly ash; the hemp silk is hemp silk fiber.

[0049] The solidification time of the sealing material in this embodiment is 25s, and the strength is 2.43MPa.

[0050] A preparation method of the sealing material of this embodiment, comprising the f...

Embodiment 2

[0057] A pore sealing material for karst water gushing according to the present invention, comprising the following components in parts by weight:

[0058] Portland cement 80 parts,

[0059] 10 parts of fly ash,

[0060] 15 parts of bentonite,

[0061] Sodium carboxymethyl cellulose 0.1 parts,

[0062] 30 parts of water,

[0063] 5 parts of water glass,

[0064] 1 serving of hemp silk.

[0065] In the present embodiment, the bentonite that adopts is organic bentonite; The concentration of water glass is 42 Baume degrees; Sodium carboxymethyl cellulose is high-viscosity cotton fiber; Water is groundwater in the foundation pit, and its pH value is 7.1; Silicate The cement is P.O 42.5 grade Portland cement; the fly ash is Class II C fly ash; the hemp silk is hemp silk fiber.

[0066] The solidification time of the sealing material in this embodiment is 35s, and the strength is 3.24MPa.

[0067] A preparation method of the sealing material of this embodiment, comprising the...

Embodiment 3

[0074] A pore sealing material for karst water gushing according to the present invention, comprising the following components in parts by weight:

[0075] Portland cement 80 parts,

[0076] Fly ash 15 parts,

[0077] 20 parts of bentonite,

[0078] Sodium carboxymethyl cellulose 0.15 parts,

[0079] 40 parts of water,

[0080] 5 parts of water glass,

[0081] 1 serving of hemp silk.

[0082] In the present embodiment, the bentonite that adopts is organic bentonite; The concentration of water glass is 42 Baume degrees; Sodium carboxymethyl cellulose is high-viscosity cotton fiber; Water is groundwater in the foundation pit, and its pH value is 7.1; Silicate The cement is P.O 42.5 grade Portland cement; the fly ash is Class II C fly ash; the hemp silk is hemp silk fiber.

[0083] The solidification time of the sealing material in this embodiment is 50s, and the strength is 3.56MPa.

[0084] A preparation method of the sealing material of this embodiment, comprising the f...

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Abstract

The invention provides a hole sealing material for karst water inflow and further correspondingly provides a preparation method and hole sealing method thereof. The hole sealing material comprises, byweight, 70-90 parts of portland cement, 10-15 parts of coal ash, 10-20 parts of bentonite, 0.05-0.16 part of sodium carboxymethyl cellulose, 15-40 parts of water, 3-5 parts of water glass and 1-2 parts of hemp thread. The hole sealing material is sufficiently kneaded, can be quickly solidified, has the advantages of good water stability, dispersion resistance, durability, high strength and the like, helps to lower the cost, improve the construction quality and make water plugging construction more convenient, achieves the aim of efficient hole sealing, and is suitable for hole sealing operation in a high-pressure water-rich karst area. The preparation method and hole sealing method of the hole sealing material are easy to operate, less in equipment input and low in cost, cause no pollution to the environment, and can guarantee the hole sealing effect and improve the hole sealing efficiency.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to a hole-sealing material for karst water gushing, a preparation method and a hole-sealing method. Background technique [0002] In recent years, with the rapid development of my country's economy, the process of urbanization has gradually accelerated, and underground engineering has also developed rapidly. In order to solve traffic and energy problems, underground projects such as road tunnels, railway tunnels, subway interval tunnels, and underground workshops in deep foundation pits of stations are being constructed on a large scale. During the construction and use of underground projects, they are always endangered by groundwater. In high-pressure water-rich karst areas, karst water gushing is the most important geological disaster faced during underground engineering construction. On the one hand, water gushing not only reduces the stability of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26E21D11/10E21D11/38C09K8/467
CPCC04B28/26C04B2111/00724C09K8/467C09K2208/34E21D9/002E21D11/10E21D11/38C04B7/02C04B18/08C04B14/104C04B24/383C04B18/248C04B14/40
Inventor 张可能廖阳张岳张云毅李江灵
Owner CENT SOUTH UNIV
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