Debris flow drainage groove abrasion section damage repairing method

Abstract

The invention discloses a debris flow drainage groove abrasion section damage repairing method which is characterized by comprising the following steps: S1, determining an abrasion damage area of a drainage groove, chiseling off a concrete layer with an aged and deteriorated surface layer, and chiseling and cleaning the chiseled concrete layer to form a joint surface; s2, rust removal and rust prevention treatment is conducted on the exposed steel bars on the joint face, floating dust and loose aggregate on the joint face are removed, and then steel wire rope meshes are laid on the joint face; s3, steel fiber reinforced concrete is adopted for conducting pouring repairing on the joint face, and during pouring, the joint face is coated with a concrete interface agent; and after pouring is completed, the steel fiber concrete is cured, and repairing is completed. The method has the advantages that the abraded and damaged groove surface can be rapidly and efficiently repaired, and the service life of the drainage groove is prolonged.

Description

technical field [0001] The invention relates to the technical field of prevention and control of debris flow geological disasters, in particular to a method for repairing damage to an abrasive section of a debris flow drainage channel. Background technique [0002] Among natural disasters, debris flows have had a huge impact on human beings and the natural environment since ancient times. Especially now, human beings over-exploit and utilize the natural environment and over-destroy vegetation, resulting in frequent natural disasters of debris flows. Humans have long been committed to the prevention and control of such natural disasters, and have developed many effective measures and methods under the continuous practice and utilization. Since the 1950s, the design of China's debris flow prevention and control projects has mostly been based on the law of floods, flow rate, flow rate, bridge and culvert aperture, and terrain conditions. Subsequently, according to the continuo...

AI Technical Summary

Problems solved by technology

Long-term engineering practice has shown that although debris flow drainage channels have a significant effect on flood drainage, most drainage channels are difficult to resist the strong impact and abrasion of debris flow, resulting in typical abrasive grooves, erosion pits and concrete protective layers falling off on the concrete wall. The steel bar at the bottom of the groove is partially exposed, which shortens the effective service life of the prevention and control structure