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A construction method for a tunnel constructed from two halves of rectangular pipe joints with outer chamfers

A construction method and technology of rectangular pipes, which are used in tunnels, earth-moving drilling, mining equipment, etc., can solve the problem that the circular shield section has a high utilization rate of rectangular sections, cannot fully meet the needs of use, and the jacking distance cannot be too long. and other problems, to achieve the effect of high section utilization rate, long advancing distance, simple and easy operation

Active Publication Date: 2016-08-24
JIANGSU GUANGHONG HEAVY IND EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of segments per ring is relatively large, and there are many sealing points, which are prone to leakage
Another thing is that the utilization rate of the circular shield section is not as high as that of the rectangular section.
In addition, there are currently many rectangular pipe jacking constructions, which can improve the utilization rate of the section, but due to the constraints of the pipe jacking method itself, the jacking distance cannot be too long, so these two construction methods cannot fully meet the requirements need

Method used

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  • A construction method for a tunnel constructed from two halves of rectangular pipe joints with outer chamfers
  • A construction method for a tunnel constructed from two halves of rectangular pipe joints with outer chamfers
  • A construction method for a tunnel constructed from two halves of rectangular pipe joints with outer chamfers

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific examples.

[0023] Such as figure 1 As shown, a tunnel is composed of two halves of rectangular pipe sections with outer chamfers. One of the two halves of rectangular pipe sections is connected by a small upper pipe section 1 and a large lower pipe section 2 to form a ring of rectangular pipe sections. One is that the large upper pipe joint 3 and the small lower pipe joint 4 are connected to form a ring of rectangular pipe joints; there are first chamfers 5 and second chamfers 6 on both sides of each ring of rectangular pipe joints. A plurality of rectangular pipe joints arranged alternately by these two kinds of pipe joints are connected together to form a tunnel. The top of the tunnel is arched, and a sealing ring 15 is arranged between two adjacent rings of rectangular pipe joints.

[0024] Such as figure 2 with image 3 As shown, the adjacent small upper pipe joint 1 and the larg...

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Abstract

The invention discloses a construction method for a tunnel constructed by two semi-rectangular pipe sections with outer chamfer angles. The construction method comprises a pipe jacking construction stage and a shield construction stage which are sequentially performed; when the pipe jacking construction is performed until the maximal trust borne by rectangular pipe sections or working pits is achieved or the design requirement of the distances between the rectangular pipe sections and a tunnel opening is met, pipe jacking construction is stopped and the shield construction stage is started; when the shield construction stage is performed on the tail end of the tunnel, shield tail seal rings are arranged at the outer sides of the rectangular pipe sections and are V-shaped or U-shaped seal rings with long and short lips. The construction method for the tunnel constructed by the two semi-rectangular pipe sections with the outer chamfer angles is simple and easy in operation, high in mechanization degree and high in efficiency, is high in section utilization ratio in comparison with round shield construction, is long in pushing distance in comparison with rectangular pipe jacking construction, has favorable practicability and meets the use requirements. The used shield tail seal rings are unique in design and have favorable seal performance, so that leakage can be prevented.

Description

technical field [0001] The invention belongs to the technical field of tunnels, and in particular relates to a construction method for a tunnel constructed by two halves of rectangular pipe joints with outer chamfers. Background technique [0002] At present, most of the shields under construction are circular shields. The number of segments per ring is relatively large, and there are many sealing places, which are prone to leakage. Another thing is that the utilization rate of the circular shield section is not as high as that of the rectangular section. In addition, there are currently many rectangular pipe jacking constructions, which can improve the utilization rate of the section, but due to the constraints of the pipe jacking method itself, the jacking distance cannot be too long, so these two construction methods cannot fully meet the requirements need. Contents of the invention [0003] Purpose of the invention: In view of the deficiencies in the prior art, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00
CPCE21D9/00E21D9/06E21D9/0635
Inventor 余彬泉张道广朱伯锦朱晓肆
Owner JIANGSU GUANGHONG HEAVY IND EQUIP
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