Anchor cable opposite-puling type supporting and protecting structure system and construction method thereof

A support structure and construction method technology, applied in the direction of earth drilling, installation of bolts, mining equipment, etc., can solve the problems of inability to effectively ensure the safety of construction and operation, the inability to ensure the safety and stability of tunnel structures, and the inability to effectively control foundation settlement. , to achieve high flexibility and adaptability, improve the stability of the structure itself, and achieve high construction efficiency
CN111412002APending Publication Date: 2020-07-14CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY ERYUAN ENG GRP CO LTD
Publication Date
2020-07-14

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Abstract

The invention relates to a tunnel supporting and protecting system, in particular to an anchor cable opposite-puling type supporting and protecting structure system and a construction method thereof.The supporting and protecting structure system comprises a vertical guide hole, a main tunnel, a first opposite-pulling anchor cable and a second opposite-pulling anchor cable; the vertical guide holeis arranged in a rock body above the main tunnel and is arranged parallel to the main tunnel; the first opposite-pulling anchor cable is arranged from top to bottom; the upper end of the first opposite-pulling anchor cable is fixed to the ground surface; the lower end of the first opposite-pulling anchor cable is fixed to the vertical guide hole; the second opposite-pulling anchor cable is arranged from the top to the bottom; the upper end of the second opposite-pulling anchor cable is fixed to the vertical guide hole; and the lower end of the second opposite-pulling anchor cable is fixed tothe main tunnel. The construction method is used for constructing the supporting and protecting structure system. The supporting and protecting structure system and the construction method provided bythe invention can effectively control the overall settlement of a tunnel structure, ensure the operating safety, and provide a new idea and a new method for a tunnel penetrating through a giant cavern hall.
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Description

technical field

[0001] The invention relates to a tunnel support system, in particular to an anchor cable pair-pull support structure system and a construction method for a tunnel passing through a giant karst cave. Background technique

[0002] Since the beginning of the 21st century, my country's railway construction has developed rapidly, and more and more high-standard double-track railways with a speed of more than 200km per hour have been built. In the western region, the development of line lines is restricted by various factors such as large curve radii and complex topographic and geological conditions. The tunnels are getting bigger and bigger. Especially in the southwestern mountainous area, karst is developed, and there are more and more long karst tunnels. It is inevitable to encounter various karst forms during tunnel construction.

[0003] Under normal circumstances, when railways pass through small and medium karst caves, schemes such as backfilling, spanning,...

Claims

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