A karst pipeline-type water gushing high-efficiency plugging ultra-high expansion grouting material and its preparation, use and application

A kind of grouting material and ultra-high technology, which is applied in the field of karst pipeline type water gushing high-efficiency plugging ultra-high expansion grouting material, which can solve the problems of cross-linking and curing of acrylic resin particles, and achieve the effect of low cost and simple operation

Active Publication Date: 2021-02-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventor found in subsequent further research that although the water plugging of the expanded polymer grouting material relies on the rapid expansion of the acrylic resin particles when they encounter water, the volume of the particles increases rapidly, and the particles squeeze each other to form a plugging body to realize water gushing However, the patent clearly points out that the carrier liquid of the grouting material only has the effect of carrying and transporting the acrylic resin particles, and cannot react with the particles themselves. In summary, the carrier liquid does not have the ability to cross-link and solidify the acrylic resin particles

Method used

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  • A karst pipeline-type water gushing high-efficiency plugging ultra-high expansion grouting material and its preparation, use and application
  • A karst pipeline-type water gushing high-efficiency plugging ultra-high expansion grouting material and its preparation, use and application
  • A karst pipeline-type water gushing high-efficiency plugging ultra-high expansion grouting material and its preparation, use and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] A preparation of super-high expansion grouting material for high-efficiency plugging of karst pipeline-type water gushing, comprising the following steps:

[0077] 1. Preparation of polymer granules A:

[0078] (1) Acrylic acid neutralization stage: first prepare 36 parts of 10% acrylic acid solution and 5 parts of 20% acrylamide interpolymer solution with ice water, add 12 parts of 10% lye to obtain neutralization degree 60% acrylic acid solution.

[0079] (2) Initiating polymerization reaction stage: 0.072 parts of crosslinking agent N, N-methylenebisacrylamide is configured into a solution with a mass fraction of 50%, added to the acrylic acid neutralizing solution configured in step (1), and Stir evenly for 1 hour, then add 50% initiator solution prepared by 0.025 parts of potassium persulfate, heat up to 80° C., and react for 23 minutes to form a colloidal polymer.

[0080] (3) Drying and crushing stage: Grinding the colloidal polymer obtained in step (3), drying...

Embodiment 2

[0103] A preparation of super-high expansion grouting material for high-efficiency plugging of karst pipeline-type water gushing, comprising the following steps:

[0104] 1. Preparation of polymer granules A:

[0105] (1) Acrylic acid neutralization stage: first prepare 36 parts of acrylic acid solution with a mass fraction of 80% and 5 parts of acrylamide interpolymer solution with a mass fraction of 80% with ice water, and add 24 parts of lye with a mass fraction of 60% to obtain the degree of neutralization Neutralizing liquid for 90% acrylic acid solution.

[0106] (2) The stage of initiating polymerization reaction: 0.09 parts of crosslinking agent N, N-methylenebisacrylamide is configured into a solution with a mass fraction of 50%, and 5 parts of the gelling catalyst (polyethylene bisacrylamide) of crosslinking solidification solution B Alcohol: p-di-o-chloroaniline methane: polyether polyol = 2:1:2) to prepare a solution with a mass fraction of 50%, add it to the acry...

Embodiment 3

[0121] A preparation of super-high expansion grouting material for high-efficiency plugging of karst pipeline-type water gushing, comprising the following steps:

[0122] 1. Preparation of polymer granules A:

[0123] (1) Acrylic acid neutralization stage: first prepare 36 parts of acrylic acid solution with a mass fraction of 40% and 5 parts of acrylamide interpolymer solution with a mass fraction of 40% with ice water, and add 12 parts of lye with a mass fraction of 50% to obtain the degree of neutralization It is 75% acrylic acid neutralizing solution.

[0124] (2) Initiating polymerization reaction stage: 0.05 part of crosslinking agent N,N-methylenebisacrylamide is configured into a solution with a mass fraction of 50%, and added to the acrylic acid neutralizing solution prepared in step (1), and uniformly Stir for 1h. Then add a 50% initiator solution prepared by 0.025 parts of ammonium persulfate, heat up to 80° C., and react for 88 minutes to form a colloidal polymer...

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Abstract

The invention belongs to the technical field of plugging materials for underground engineering, and in particular relates to an ultra-high expansion grouting material for high-efficiency plugging of karst pipeline-type water gushing and its preparation, use and application. The grouting material includes polymer particles A and cross-linked solidification liquid B, the polymer particles A has a mosaic core-shell structure, wherein the primary polymer water-absorbing resin is the core, and the gel catalyst is partially attached A shell is formed on the surface of the inner core, and at the same time, part of the gelling catalyst penetrates into the inner core to form a mosaic structure; before use, the high molecular polymer particles A and the cross-linking solidification liquid B are stirred to make them fully mixed; then the obtained mixed liquid As a grouting material, it can be injected into the cracks in the rock mass fracture zone. The grouting material proposed by the invention can efficiently control high-pressure and large-flow karst inrush water, improve and increase the sealing efficiency of water inrush, and further promote the construction of major underground projects in my country.

Description

technical field [0001] The invention belongs to the technical field of plugging materials for underground engineering, and in particular relates to an ultra-high expansion grouting material for high-efficiency plugging of karst pipeline-type water gushing and its preparation, use and application. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] With the rapid development of society, traffic engineering is developing rapidly, the pace of infrastructure construction continues to accelerate, and projects such as railways, tunnels, highways, and mines are increasing. Especially with the vigorous implementation of the 21st Century Maritime Silk Road, the eastern c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/02C08L75/08C08J3/12C08F220/06C08F220/56C08F222/38
CPCC08L33/26C08L75/08C08J3/126C08F220/06C08J2333/26C08J2471/00C08J2471/02C08L2207/53C08L33/02C08F220/56C08F222/385C04B2111/70C04B2111/00663C04B26/06C04B2111/0075C04B2111/00698C04B24/06C04B24/2623C04B24/2652C04B24/38C04B2103/20C04B2103/0049C08F2800/20C08F2810/20C08J3/16C08J3/244C08J3/245C08J2333/02
Inventor 刘人太马晨阳陈孟军王振军白继文段少龙田嘉伟王晓晨张春雨李修浩
Owner SHANDONG UNIV
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