Karst pipeline type ultrahigh-expansion grouting material for efficient blocking of gushing water, and preparation method, use method and application thereof

Abstract

The invention belongs to the technical field of underground engineering blocking materials, and particularly relates to a karst pipeline type ultrahigh-expansion grouting material for efficient blocking of gushing water, and a preparation method, a use method and an application thereof. The grouting material comprises a high-molecular polymer particle A and a crosslinking curing liquid B, and thehigh-molecular polymer particle A is of an embedded core-shell structure, wherein primary high-molecular water-absorbent resin serves as the core, a part of a gelling catalyst is attached to the surface of the core to form the shell, and a part of the gelling catalyst permeates into the core to form an embedded structure. Before the grouting material is used, the high-molecular polymer particle Aand the crosslinking curing liquid B are stirred to achieve full mixing; and the obtained mixed solution is injected into cracks of a rock mass fracture zone as the grouting material. The grouting material can efficiently control high-pressure large-flow karst gushing water, improves the gushing water blocking efficiency, and further promotes the construction of major underground engineering in China.

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...

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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

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