Early-strength CK anchoring agent and application thereof

Abstract

The invention discloses an early-strength CK anchoring agent and is characterized in that the early-strength CK anchoring agent comprises resin mortar and a curing agent, wherein the weight ratio of the resin mortar to the curing agent is 100 : 4 to 6; the resin mortar comprises the following ingredients by part by weight: 100 parts of unsaturated polyester resin, 0.5 to 1 part dimethyl-p-toluidine (DMT), 0.1 to 1 part of dimethyl aniline (DMA), 0.1 to 2 parts of gas phase silicon dioxide, 200 to 300 parts of coarse stone powder, and 200 to 400 parts of fine stone powder; and the curing agent comprises the following ingredients by part by weight: 100 parts of benzoyl peroxide, 90 to 105 parts of water, 15 to 30 parts of diethylene glycol, 1 to 3 parts of carboxymethyl cellulose, and 90 to 120 parts of white stone powder. The early-strength CK anchoring agent is applied to underground roadway supporting and pit shaft equipment installation work in a coal mine. Compared with the traditional CK anchoring agent, the early-strength CK anchoring agent mainly has the advantages that the early strength development and the curing exotherm are quick, the exotherm is large, and the final strength after curing is high.

Description

technical field [0001] The invention relates to the field of anchoring agents, in particular to an early-strength CK anchoring agent and its application. Background technique [0002] Resin anchoring agent has been widely used in coal mines in my country for more than 50 years. It is mainly used as an anchoring product and has been widely used in coal mine roadway support and shaft equipment installation. At present, the CK anchoring agent uses a single DMA as the accelerator, and DC must be added to the curing agent to meet the use requirements of the CK anchoring agent gel time of 8-40 seconds, in order to meet faster gelation Time, this damages the curing effect of the anchoring agent, the early strength (mainly after the anchoring agent gels) develops slowly, and the final strength after complete curing is also lower. According to the normal operation of the traditional CK anchoring agent after gelling, it needs to wait for 10 -60 seconds, affecting construction efficie...

AI Technical Summary

Problems solved by technology

At present, the CK anchoring agent uses a single DMA as the accelerator, and DC must be added to the curing agent to meet the use requirements of the CK anchoring agent gel time of 8-40 seconds, in order to meet faster gelation Time, this damages the curing effect of the anchoring agent, the early strength (mainly after the anchoring agent gels) develops slowly, and the final strength after complete curing is also lower. According to the normal operation of the traditional CK anchoring agent after gelling, it needs to wait for 10 -60 seconds, affecting construction efficiency

However, in order to complete the excavation scale of the class and increase the speed of roadway formation, some underground workers now use quick installation when using CK anchoring agent. After the anchoring agent gels, they install the supporting plate without waiting. Slow, such an operation will destroy the early solidification strength and final strength of the anchoring agent, sometimes causing roof and roadway collapse and other phenomena, bringing huge potential safety hazards to coal mines, and using the early strength CK anchoring agent of the present invention The early strength development is faster , it can be loaded without waiting after gelling, which can make up for the deficiency of traditional CK anchoring agent, and its performance is much higher than the requirements of MT146.1-2002 standard

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