Repairing Method of Underwater Inverted Cracks Using Magnetic Mortar

Abstract

A device and method for repairing an underwater inverted crack with magnetic mortar, comprising a guide cylinder, a clamping mechanism, a launching mechanism and a magnetic nail. By arranging the clamping mechanism and the launching mechanism in the guide cylinder, the magnetic nail is located in the guide cylinder. The inside is clamped by the clamping mechanism, and the air pump is inflated into the guide cylinder to make the launch cylinder of the launch mechanism have potential energy, trigger the launch button to release the launch cylinder, and inject the magnetic nails into the periphery of the underwater inverted cracks obliquely. The mortar is adsorbed on the magnetized magnetic nail. The invention overcomes the problems that the original underwater inverted cracks are easy to fall off after repairing, and the local small cracks cannot be repaired, and has the advantages of simple structure, repairing the cracks by squeezing out the water and air in the cracks, improving the shear strength of the crack interface, and repairing the cracks. The area is not easy to fall, safe and reliable, and the operation is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of underwater repair, and relates to a repair method for repairing underwater inverted cracks by using magnetic mortar. Background technique [0002] When the existing underwater inverted crack repair technology uses ordinary mortar to repair underwater inverted cracks, there are the following defects: easy to disperse into muddy water, no adsorption and sinking, the slurry sinks freely by gravity, the filling rate is less than 5%, and the ordinary slurry is difficult to enter Micro-crack filling and insufficient drainage. When repairing underwater inverted cracks, ordinary mortar is difficult to repair, which will cause waste of resources, high cost, and it is difficult to repair the crack edge. It is impossible to repair the local small extension cracks around the main crack, and the repair effect is very poor. [0003] In the existing underwater inverted crack repair technology, the repair material is di...

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Problems solved by technology

[0002] When the existing underwater inverted crack repair technology uses ordinary mortar to repair underwater inverted cracks, there are the following defects: it is easy to disperse into muddy water, sinks without adsorption, the slurry sinks freely due to gravity, the filling rate is less than 5%, and it is difficult for ordinary slurry to enter Micro-crack filling, insufficient drainage

When repairing underwater inverted cracks, it is difficult to repair with ordinary mortar, which will cause waste of resources, high cost, and it is difficult to repair the edge of the crack. It is even impossible to repair the local small extended cracks around the main cracks, and the repair effect is very poor.

[0003] In the existing underwater inverted crack repair technology, the repair material is directly attached to the outside of the crack surface, and basically does not penetrate into the inner layer of the crack. The strength (shear resistance) of the interface cannot be guaranteed, because the repair material attaches to the old rock and soil area on the surface of the crack, which increases its gravity, so it may appear that after the repair material repairs the crack, the repair material connects to the old rock and soil area on the surface from the new, The interface of the old rock-soil division fell off, posing a safety hazard

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