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Small-diameter pipe jacking excavation construction end part stability maintaining support suitable for soft stratum

A pipe jacking and caliper technology, which is used in mining equipment, earth-moving drilling, temporary shielding, etc., can solve the problems such as the inability to ensure the safety of construction workers and the existence of potential safety hazards, so as to reduce environmental pollution and road damage. The effect of blocking, saving demolition costs, and facilitating widespread promotion

Active Publication Date: 2022-03-04
CHONGQING ZHONGHUAN CONSTR +1
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AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a small-diameter pipe-jacking construction end suitable for weak formations in order to solve the problem that the manual excavation method used in weak formations cannot well guarantee the safety of construction personnel and there are potential safety hazards. Stability support

Method used

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  • Small-diameter pipe jacking excavation construction end part stability maintaining support suitable for soft stratum
  • Small-diameter pipe jacking excavation construction end part stability maintaining support suitable for soft stratum
  • Small-diameter pipe jacking excavation construction end part stability maintaining support suitable for soft stratum

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Embodiment Construction

[0029] The following is further described in detail through specific implementation methods:

[0030] Such as Figure 1-11 The shown end stability support for small-diameter pipe jacking excavation construction suitable for weak formations includes pipe jacking pipe body 1, stability maintenance shrinkage pipe body 2 connected to the end of pipe jacking pipe body 1 and stability maintenance shrinkage pipe body connected to the end of pipe jacking pipe body 1. The stable rotating steel sheet 3 of 2 ends. The shrinking tube body 2 of Weiwen includes the shrinking tube body I21, the shrinking tube body II22, the shrinking tube body III23 and the shrinking tube body IV24 which are sequentially socketed. There are two chute 25, the number of chute 25 can also be four and the center is symmetrical, and the outer wall of the shrink tube body I21 and the shrink tube body III23 is provided with a through groove at the position corresponding to the chute 25 in the axial direction, and ...

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Abstract

The invention relates to a small-size pipe jacking excavation construction end stability maintaining support suitable for a soft stratum. The support comprises a pipe jacking body, a stability maintaining shrinkage pipe body connected to the end of the pipe jacking body and a stability maintaining rotating steel sheet connected to the end of the stability maintaining shrinkage pipe body. The stability maintaining shrinkage pipe body comprises a plurality of shrinkage pipe bodies which are sequentially connected in a sleeved mode, a sliding bearing is arranged at the center position of the stability maintaining rotating steel sheet, a plurality of fan-shaped steel sheets are sequentially and rotationally installed on the sliding bearing, the fan-shaped steel sheets are in a disc shape after being rotationally spliced, and push-pull rods facilitating pushing and pulling of the adjacent shrinkage pipe bodies are fixedly installed on the inner walls of the shrinkage pipe bodies in the axial direction. And pipe body fasteners convenient for fixedly connecting adjacent shrinkage pipe bodies are arranged on the inner walls of the shrinkage pipe bodies, so that the problems that the operation safety of constructors cannot be well guaranteed and potential safety hazards exist due to the fact that a manual tunneling mode is adopted in a soft stratum at present are solved.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, and specifically discloses a small-diameter pipe jacking excavation end stability maintenance support suitable for weak strata. Background technique [0002] With the sustained and steady growth of my country's economy and the further acceleration of the urbanization process, the demand for underground pipelines in my country is also increasing year by year. Coupled with the enhancement of people's awareness of environmental protection, pipe jacking technology will play an increasingly important position and role in the construction of underground pipelines in our country. [0003] There are municipal concrete water supply and drainage pipes buried under urban roads. During the excavation of pipeline burial construction, weak ground is often encountered. The weak ground is mainly composed of soft soil and has a weak bearing capacity. Excavation of pipe jacking in weak strata. Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D19/00
CPCE21D19/00
Inventor 贾家银黄锋周世均蓝必冠范正兴黄明锋成鑫刘星辰
Owner CHONGQING ZHONGHUAN CONSTR
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