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

A technology for high-speed railways and roadbeds, applied in infrastructure engineering, roads, roads, etc., can solve the problems of inaccurate positioning of karst caves, poor reinforcement effect, difficulty in secondary repair, etc., achieving light weight, easy construction, and high self-strength. Effect

Pending Publication Date: 2018-04-27
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Application Information

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

Method used

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

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Embodiment Construction

[0015] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0016] refer to figure 1 and figure 2 , a high-speed railway karst subgrade structure with early warning function of the present invention includes a high-strength geotextile isolation layer 11, a lightweight concrete filling body 10 and a foundation bed 20, the first high-strength geotextile isolation layer 11 is laid on the foundation, and the lightweight The concrete filling body 10 is filled on the first high-strength geotextile isolation layer 11 , and the foundation bed 20 is filled on the lightweight concrete filling body 10 . The lightweight concrete layer 10 is arranged below the subgrade bed 20 to replace the traditional subgrade filler, which not only greatly reduces the additional stress on the foundation caused by the train and the overlying fill soil, but also acts as a load bearing on the upper subgrade, greatly reducing th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E01B2/00E02D3/00E02D3/12E02D1/00E02D1/08
CPCE01B2/006E01C3/04E02D1/00E02D1/08E02D3/005E02D3/12E01B2204/08
Inventor 吴沛沛姚裕春龚建辉胡会星李安洪魏永幸曾永红陈伟志李宁张健周川滨
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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