Road repair grouting method

Abstract

The invention discloses a road repair grouting method in the field of road maintenance. The road repair grouting method comprises the following steps that S1, construction preparation is conducted; S2, paying off and positioning are carried out; S3, drilling is conducted; S4, pipe burying is conducted; specifically, a grouting pipe is inserted into a grouting hole, and after the grouting pipe reaches the hole distribution depth, a remaining gun head is inserted into the grouting hole and seals the grouting hole; S5, carrying out pulping; S6, grouting is conducted; specifically, the prepared grout is injected into the grouting pipe through the remaining gun head, high-pressure grouting is conducted according to 2-3 times of the grouting pressure at the beginning of grouting, grouting is conducted according to the designed grouting pressure after 2-3 s, and grouting is stopped when the grouting stopping condition is met; and S7, pipe drawing is carried out. According to the road repair grouting method, the grouting efficiency is improved, the road repair effect is improved, grout overflowing is greatly reduced, the road repair effect is improved; and meanwhile, cleaning work after road repair is relieved.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on June 19, 2019, with the application number 201910533074.4, and the title of the invention is "A Grouting Method for Road Repair and Reinforcement", the entire content of which is incorporated by reference In this application. technical field [0002] The invention relates to the technical field of road repair and maintenance, in particular to a road repair grouting method. Background technique [0003] At present, my country's high-grade highways are in a stage of rapid development. Most of the high-grade highways that have been built and are under construction are asphalt pavements, and the base is basically a semi-rigid base stabilized by cement and lime. For the construction of the subgrade, due to the influence of various factors such as funds and construction period, only the usual simple treatment can be carried out: such as shallow replacement, cement ...

AI Technical Summary

Problems solved by technology

[0006] Although the existing technology solves the problems of difficulty in controlling the amount of grouting, arching of the road surface, and damage to the integrity of the road structure, etc., in the actual drilling process, the high-speed impact drill bit will be damaged during the impact, cutting, and friction of the road base and road subgrade soil. Seal the original capillaries, gaps or empty layers in the original base and subgrade soil to form an interface sealing layer. It is difficult to break through the interface sealing layer caused by drilling when grouting according to the design pressure, making it difficult for the grout to spread to the diseased part, affecting the road. In addition, when the grouting nozzle is pulled out from the grouting hole after the grouting is stopped, the grout in the grouting hole will be sprayed out due to pressure, which will not only cause the grouted part to be voided twice, seriously affect the grouting effect, but also waste the grouting. In addition, after the grouting slurry is sprayed out of the grouting hole, it will pollute the road surface and require a lot of manpower and material resources to clean

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