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

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...

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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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