High-speed-railway karst roadbed structure with pre-warning function and repairing method thereof

Abstract

The invention provides a high-speed-railway karst roadbed structure with a pre-warning function and a repairing method thereof so as to effectively solve the technical difficult problems that as for atraditional high-speed-railway single karst roadbed, the collapse risk is high, the reinforcing effect is poor, karst caves cannot be accurately positioned, the engineering cost is high, and secondary repairing is difficult. The roadbed structure comprises a high-strength geotextile insulation layer, a light concrete filled-up body and a foundation bed, the first high-strength geotextile insulation layer is laid on a foundation, and the light concrete filled-up body is arranged on the first high-strength geotextile insulation layer in a filled-up mode. The foundation bed is arranged on the light concrete filled-up body in a filled-up mode, a first multi-point settlement observation system and a second multi-point settlement observation system are arranged on the bottom face and the top face of the light concrete filled-up body correspondingly, and a roadbed collapse pre-warning system is arranged nearby a roadbed basal slope and used for collecting and processing roadbed settlement data observed by the first multi-point settlement observation system and the second multi-point settlement observation system and conducting automatic pre-warning when deformation of a roadbed tends toexceed the limit. A reserved post grouting repairing system is arranged in the light concrete filled-up body.

Description

technical field [0001] The invention relates to a high-speed railway karst subgrade structure with an early warning function and a repair method thereof, which can be used in the fields of railway engineering, highway engineering and the like, and is especially suitable for high-speed railway subgrade engineering in karst areas and goaf sections. Background technique [0002] Soluble rock formations are widely distributed in my country, and karst areas are characterized by rich groundwater and irregular distribution of karst pores. Building high-speed railway roadbeds on them face the risk of karst collapse. Perform grouting reinforcement. When passing through the pile-slab structure, there are problems such as high engineering cost, difficulty in drilling and forming piles, difficulty in determining the length of the designed pile, and difficulty in determining the thickness of the complete bedrock at the bottom of the pile; if only relying on grouting reinforcement for kars...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-speed railway karst subgrade structure with an early warning function to effectively solve the problem of high risk of subsidence, poor reinforcement effect, inability to accurately locate karst caves, high engineering costs and secondary problems faced by a single karst subgrade of a traditional high-speed railway. Technical problems such as secondary repair difficulties

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