Long-distance curved jacking pipe and pipe roof construction technique

A construction technology, long-distance technology, applied in mining equipment, tunnels, earth-moving drilling and other directions, can solve problems such as difficult to complete the process, and achieve the effect of improving the level of construction quality.

Active Publication Date: 2015-02-11
CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the construction process of some long-distance curved pipe curtains, the existing technology is difficult to complete

Method used

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  • Long-distance curved jacking pipe and pipe roof construction technique
  • Long-distance curved jacking pipe and pipe roof construction technique
  • Long-distance curved jacking pipe and pipe roof construction technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] This embodiment takes the pipe curtain construction of the Gongbei Tunnel excavation section of the Hong Kong-Zhuhai-Macao Bridge Zhuhai Connection Line as an example to illustrate. The average length of the pipe curtain described in this embodiment is 257.927m / root, which is the longest in China at present, located at the radius of curvature R =885.852m~906.298m on the transitional curve and circular curve, there are 36 pipe curtains of φ1620mm (wall thickness 20mm). Such large-section pipe curtain groups are rare in China and abroad. There are two test pipe curtains, 6 in the middle plate stage, and 28 in the group pipe jacking stage. The distance between the pipe curtains is about 35.7cm, and the shortest distance between the pipe curtains and the pile foundation of the port building is 50cm. The opening angle of each section on the transition curve needs to be adjusted during the jacking process (controlled within 3mm). The opening angle between the joints is fixed ...

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PUM

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Abstract

The invention discloses a long-distance curved jacking pipe and pipe roof construction technique. The construction technique is characterized by comprising the following steps: (1) preparation, that is, the model of construction equipment is selected; (2) measuring and positioning are carried out to determine a construction position; (3) a jacking pipe platform is erected; (4) a tunnel portal is exploded, and a tunnel portal water stop device is mounted; (5) a jacking back is mounted; (6) after mounting and debugging, a pipe jacking machine enters a tunnel for jacking, and exits from the tunnel for receiving after the jacking is completed; step (6) is then repeated until a pipe roof is formed; (7) displaced grouting filling is carried out, so as to complete the pipe roof construction. The long-distance curved jacking pipe and pipe roof construction technique provided by the invention can overcome the defects of the conventional technique, and improve the pipe roof construction quality.

Description

technical field [0001] The invention relates to a pipe curtain construction technology, in particular to a long-distance curved pipe jacking and pipe curtain construction technology. Background technique [0002] Pipe curtain construction technology is a common construction method in tunnel construction. At present, with the rapid development of high-speed railway construction and the progress of engineering design and construction technology, construction conditions are becoming more and more restricted. Especially in the construction process of some long-distance curved pipe curtains, the existing technology is difficult to complete. Contents of the invention [0003] The purpose of the present invention is to provide a long-distance curved pipe jacking and pipe curtain construction technology, which can overcome the shortcomings of the existing technology and improve the quality level of pipe curtain construction. [0004] In order to achieve the above object, the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
CPCE21D9/00
Inventor 张斌梁潘建立高海东李刚马胜利叶小兵韩利民
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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