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Hole sealing material for karst water inflow and preparation method and hole sealing method thereof

A sealing material and karst technology, which is applied in the field of karst water gushing sealing material and its preparation, can solve the problems of difficult effective sealing of pipe wall gaps, failure of sealing effect, and influence of grouting effect, etc., to achieve water blocking Convenient construction, improved sealing efficiency, and good water stability

Active Publication Date: 2018-04-10
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

Method used

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  • Hole sealing material for karst water inflow and preparation method and hole sealing method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] A pore sealing material for karst water inflow of the present invention, comprising the following components by weight:

[0041] Portland cement 80 parts,

[0042] 10 parts of fly ash,

[0043] 10 parts of bentonite,

[0044] Sodium carboxymethyl cellulose 0.05 part,

[0045] 30 parts of water,

[0046] 3 parts water glass,

[0047] 1 serving of hemp.

[0048] In this embodiment, the bentonite used is organobentonite; the concentration of water glass is 42 Baume degrees; the sodium carboxymethyl cellulose is high-viscosity cotton fiber; the water is groundwater in the foundation pit, and its pH value is 7.1; The cement is P.O 42.5 grade Portland cement; the fly ash is Class II Class 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 the present embodiment, comprising the following steps:

[0051] (1) ...

Embodiment 2

[0057] A pore sealing material for karst water inflow of the present invention, comprising the following components by weight:

[0058] Portland cement 80 parts,

[0059] 10 parts of fly ash,

[0060] 15 parts of bentonite,

[0061] 0.1 part of sodium carboxymethyl cellulose,

[0062] 30 parts of water,

[0063] 5 parts of water glass,

[0064] 1 serving of hemp.

[0065] In this embodiment, the bentonite used is organobentonite; the concentration of water glass is 42 Baume degrees; the sodium carboxymethyl cellulose is high-viscosity cotton fiber; the water is groundwater in the foundation pit, and its pH value is 7.1; The cement is P.O 42.5 grade Portland cement; the fly ash is Class II Class 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 the present embodiment, comprising the following steps:

[0068]...

Embodiment 3

[0074] A pore sealing material for karst water inflow of the present invention, comprising the following components by weight:

[0075] Portland cement 80 parts,

[0076] 15 parts of fly ash,

[0077] 20 parts of bentonite,

[0078] 0.15 part of sodium carboxymethyl cellulose,

[0079] 40 parts of water,

[0080] 5 parts of water glass,

[0081] 1 serving of hemp.

[0082] In this embodiment, the bentonite used is organobentonite; the concentration of water glass is 42 Baume degrees; the sodium carboxymethyl cellulose is high-viscosity cotton fiber; the water is groundwater in the foundation pit, and its pH value is 7.1; The cement is P.O 42.5 grade Portland cement; the fly ash is Class II Class 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 the present embodiment, comprising the following steps:

[0085...

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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 thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, the urbanization process has been gradually accelerated, and the underground engineering has also developed rapidly. In order to solve traffic and energy problems, underground projects such as highway tunnels, railway tunnels, subway tunnels, and underground powerhouses in deep foundation pits of stations are being constructed on a large scale. During the construction and use of underground projects, they are always subject to groundwater hazards. In high-pressure water-rich karst areas, karst water inflow is the most important geological disaster faced during the construction of underground engineering. On the one hand, water gushing not only reduce...

Claims

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Application Information

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Patent Type & Authority Applications(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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