A method for rapid identification and non-destructive repair of high-speed railway foundation slurrying disease

Abstract

The invention discloses a method for rapidly identifying and non-destructively repairing a high-speed railway foundation slurrying disease. Ground-penetrating radar and a wave velocity reflection method device are used to detect a high-speed railway foundation to obtain a diseased area, and a grouting hole is opened on the diseased area, and through grouting The modified polyurethane material is injected into the diseased area through the hole, and the ground penetrating radar and the cone dynamic penetrating device are used to detect the diseased area, and the grouting holes in the diseased area that meet the detection requirements are blocked. The invention has the advantages of high disease detection efficiency, filling and reinforcement for high railway foundations, high construction efficiency, controllable material consumption, reduced material waste, and good material filling effect.

Description

technical field [0001] The invention belongs to the technical field of high-speed railway infrastructure construction, and in particular relates to a method for rapidly identifying and non-destructively repairing a high-speed railway foundation slurrying disease. Background technique [0002] The subgrade is the foundation of the railway track. It bears the weight of the railway track and the dynamic load of the rolling stock. At the same time, it is constantly attacked by water flow, wind and sand, rain and snow, severe cold, high temperature, etc., as well as various adverse geological conditions and human factors. Mud seepage is a subgrade disease phenomenon in which the subgrade soil is softened or liquefied by surface water or groundwater, and under the action of train dynamic load, it forms a subgrade disease phenomenon along the gap of ballast in the ballast bed to the surface. The muddying of the subgrade reappeared after the whole track was cleaned and screened. The...

AI Technical Summary

Problems solved by technology

However, the existing solutions are prone to repeated grouting and mud discharge after 1-2 rainy seasons. The main reasons are: the grouting depth is relatively shallow, and the thickness of the material layer formed by filling the empty area of ​​the base plate is nearly 2mm-20mm, and the structural strength Low; the grouting material is thin, and the running of high-speed rail trains can cause a large pore water pressure in the water body in the subgrade, which will cause damage to the polymer material in the long run; the existing grouting material itself is highly water sensitive, and the grouting material is Water reaction Water stability is poor, which leads to low mechanical strength and poor durability of grouting materials

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