Reinforcement and repair method, repair material and abrasion depth prediction method for debris flow prevention structure

A method for reinforcing and repairing a debris flow prevention structure, comprising:

• (1) evaluating a surface abrasion depth of the debris flow prevention structure to formulate a reinforcement and repair strategy;
• (2) during implementation of a repair project, cleaning a to-be-constructed area according to the reinforcement and repair strategy, and pouring a matrix enhancement material into the to-be-constructed area so that the matrix enhancement material permeates into a substrate of the debris flow prevention structure for repairing or enhancing an ability to resist overall structural damage;
• and
• (3) arranging a surface wear-resistant layer on a surface of the substrate to repair or enhance an ability to resist surface damage;
• wherein step (3) is performed through steps of:
• during construction, curing a polyurea material on the surface of the substrate to form the surface wear-resistant layer, such that a plurality of polyurea blocks are fixed on the surface of the substrate in a bionic arrangement to form a bionic structure;
• the bionic structure is a convex platform structure, a linear groove structure, a spherical groove structure or a grid groove structure;
• the convex platform structure is composed of a plurality of convex strips that are raised relative to a surface profile of the substrate and arranged in parallel, and a length direction of the plurality of convex strips is perpendicular to a flow direction of a debris flow;
• the linear groove structure is composed of a plurality of strip-shaped grooves that are recessed relative to the surface profile of the substrate and arranged in parallel, and a length direction of the plurality of strip-shaped grooves is perpendicular to the flow direction of the debris flow;
• the spherical groove structure is formed by a plurality of hemispherical bodies that are recessed relative to the surface profile of the substrate and arranged in a matrix pattern;
• and
• the grid groove structure is formed by a plurality of square blocks that are recessed relative to the surface profile of the substrate and arranged in a matrix pattern.