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Construction method of six-zone digging of super cross section tunnel

A technology of super large section and construction method, applied in tunnels, tunnel linings, earthwork drilling and other directions, can solve the problems of mutual interference, many blocks, slow construction progress, etc. effect of input

Active Publication Date: 2010-03-10
CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves upon existing methods for constructing tunnels used at large sections such as China's Guangzhou Tunnel (GTR). It reduces costs while maintaining safety during excavations compared to previous techniques. Additionally, this new technique allows multiple parts or regions within one zone forming rings without dividing them further simplifies operations and increases working efficacy. Overall, these improvements improve performance and reduce expenses over current methods.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficiency at which tunnels can be built on highways or railroads due to their larger size compared to traditional ways like drilling holes for support during building stages.

Method used

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  • Construction method of six-zone digging of super cross section tunnel
  • Construction method of six-zone digging of super cross section tunnel
  • Construction method of six-zone digging of super cross section tunnel

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Embodiment Construction

[0028] see figure 1 , in this embodiment, the section of the tunnel is divided into upper left area ①, upper right area ②, upper middle area ⑤, lower left area ③, lower right area ④, and lower middle area ⑥ on the tunnel section according to the top, bottom, left, middle, and right. , according to the division that was constructed first to form a ring first, and then form a ring together with the adjacent division when the construction of the adjacent division is completed, and finally the tunnel as a whole forms a ring, forming a construction method of early closure and early formation of the ring. The specific construction steps are as follows:

[0029] 1. Construction of Part ① and Part ②

[0030] figure 2 As shown, the tunnel is constructed separately on the left and right sides. After the smooth blasting of the ① part, the construction of the initial support 2 of the ① part and the temporary upper left intermediate wall support 8 is carried out in time to form a small-s...

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Abstract

The invention discloses a construction method of six-zone digging of a super cross section tunnel, which is characterized in that the cross section of the super cross section tunnel is divided into anupper left zone (1) part, an upper right zone (2) part, an upper middle zone (5) part, a lower left zone (3) part, a lower right zone (4) part and a lower middle zone (6) part in the mode of partitioning by upper and lower direction as well as left, middle and right directions, and construction in each part is carried out in an orderly mode. The method of the invention has stable structure, safety and high efficiency and can effectively quicken construction progress and save temporary support cost input.

Description

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Claims

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Application Information

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Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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