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Construction method for enabling tunnel shield to pass through vertical shaft structure

A construction method and technology of shield tunneling, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems of unsatisfactory overall construction period, quality, and safety cost, and achieve strong practicability, cost saving, and work improvement. efficiency effect

Active Publication Date: 2015-07-15
北京住总集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods are not satisfactory in terms of overall construction period, quality, safety, cost, etc.

Method used

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  • Construction method for enabling tunnel shield to pass through vertical shaft structure
  • Construction method for enabling tunnel shield to pass through vertical shaft structure
  • Construction method for enabling tunnel shield to pass through vertical shaft structure

Examples

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Embodiment Construction

[0035] The preferred embodiment of the present invention will be described in detail below by taking the shield passing through the second-lined shaft as an example.

[0036] The second lining shaft is a shaft after the shaft structure excavation is completed, and the inner wall of the shaft structure is reinforced with concrete or reinforced concrete structure. Due to the stronger concrete or reinforced concrete structure, it is more difficult for the shield to pass through the shaft wall than the tunnel part, and the tool wear is more serious.

[0037] figure 1 It is a schematic top view of the shield 11 passing through the second lining shaft 21. Such as figure 1 As shown, the middle box is the well wall of the shaft, which is generally the underground diaphragm wall of concrete or reinforced concrete for the second lining shaft. The two sides of the underground diaphragm wall are where the tunnel passes. The shield tunnel 11 is excavated from the rear tunnel 31 on one s...

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Abstract

The invention provides a construction method for enabling a tunnel shield to pass through a vertical shaft structure. The construction method for enabling the tunnel shield to pass through the vertical shaft structure comprises a base and guide rail setting step, a tunnel shield receiving step and a tunnel shield starting step. According to the base and guide rail setting step, a base is arranged at the position where the tunnel shield passes in a vertical shaft, and guide rails enabling the tunnel shield to move are laid on the base. According to the tunnel shield receiving step, the tunnel shield passes through the vertical shaft wall at a receiving end, then directly moves to the guide rails, and moves forwards along the guide rails. According to the tunnel shield starting step, the tunnel shield is contacted with the vertical shaft wall at a starting end, then continues to advance, and leaves the vertical shaft. According to the construction method for enabling the tunnel shield to pass through the vertical shaft structure, the vertical shaft is excavated firstly, then the tunnel shield passes through the vertical shaft, on one hand, the posture of a shield tunneling machine is verified timely, on the other hand, the function of shaft plumbing measuring for a long distance tunnel can be achieved, and the errors in measurement of the long distance tunnel can be reduced and corrected timely. The construction method for enabling the tunnel shield to pass through the vertical shaft structure has the advantages of being high in practicability, being simple and convenient to operate, saving cost and time, improving work efficiency, effectively guaranteeing the safety of construction personnel, and the like, thereby being suitable for being widely used for the construction enabling the tunnel shield to pass through the vertical shaft structure in the subway engineering or hydraulic engineering.

Description

technical field [0001] The invention relates to a construction technique for a shield passing well structure in an underground project, and is especially suitable for the construction of a shield passing interval shaft structure in a subway project or a water conservancy project. Background technique [0002] In the current underground engineering construction, especially in subway engineering and water conservancy engineering, shield construction technology has occupied an important position. Considering the function and construction requirements, the interval shaft structure is often set on the shield tunneling line, which in turn involves the construction of the interval shaft structure during the shield excavation process. In the prior art, there are two methods for the shield to pass through the well structure: ①The shield first passes through and then excavates the soil in the structure; ②The soil is excavated first and the structure is constructed, and then sand is fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08E21D5/00
Inventor 杨富强施笋方江华王坡张颍辉樊继丰马骏王振东贺现实肖宗莉
Owner 北京住总集团有限责任公司
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