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Construction Method of Secondary Reinforcement at the Exit Hole of Pipe Jacking

A construction method and pipe jacking technology, which is applied in drilling pipe, casing, earthwork drilling and mining, etc., can solve problems such as damage, and achieve the effect of increasing stability and good reinforcement effect

Active Publication Date: 2019-03-01
SHANGHAI MUNICIPAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem in the prior art that the original reinforcement measures at the outlet of the pipe jacking are damaged due to the sudden subsidence of the jacking well, the invention discloses a construction method for the secondary reinforcement of the outlet of the pipe jacking. The soil around the area is reinforced twice, which has the advantages of small soil disturbance and good reinforcement effect.

Method used

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  • Construction Method of Secondary Reinforcement at the Exit Hole of Pipe Jacking
  • Construction Method of Secondary Reinforcement at the Exit Hole of Pipe Jacking
  • Construction Method of Secondary Reinforcement at the Exit Hole of Pipe Jacking

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Embodiment Construction

[0032] The safety helmet with monitoring function and its monitoring method provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer with reference to the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0033] see figure 1 , figure 1 A flow chart of the construction method for the secondary reinforcement of the exit hole of the jacking pipe provided in this embodiment. As an example, the original reinforcement measures at the exit of the pipe jacking are as follows: figure 2 , image 3 As shown, the jacking well 100 includes a well wall 110 and a bottom cover 120. On the well wall 110, an embedded casing 130 ...

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Abstract

The invention discloses a construction method for secondary reinforcement of a cave outlet of an ejecting pipe and belongs to the field of ejecting pipe construction. The construction method comprises the following steps that (S1) rotary pile spraying construction is conducted on a secondary reinforcement area through an MJS construction method, and the secondary reinforcement area covers an original reinforcement area, surrounds the original reinforcement area and outwards extends; (S2) precipitation wells are distributed nearby the cave outlet of the ejecting pipe for precipitation; and (S3) the position of a pre-buried sleeve pipe is positioned again. According to the construction method disclosed by the invention, the original reinforcement area and soil bodies around the original reinforcement area are subjected to secondary reinforcement, and the construction method for secondary reinforcement of the cave outlet of the ejecting pipe has the advantages that soil body disturbance is small, and the reinforcement effect is good.

Description

technical field [0001] The invention relates to pipe jacking construction, in particular to a construction method for secondary reinforcement of a pipe jacking exit hole. Background technique [0002] Pipe jacking construction is an underground engineering construction method developed after shield tunneling construction. It is mainly used for the construction of underground water inlet pipes, drainage pipes, gas pipes, and telecommunication cable pipes. The pipe jacking construction is to set the jacking well and the receiving well, and use the main jacking device to push the pipe from the jacking well to the receiving well. [0003] The jacking well of the pipe jacking is a shaft-shaped structure, including a well wall and a bottom cover arranged at the bottom of the well wall. Usually, a pre-buried casing is arranged on the well wall, and the jacking pipe is pushed into the soil layer by the pre-buried casing through the main jacking jack. In order to prevent soil distu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E02D5/46E02D19/10E21B17/18E21B12/00E21B21/10E21B10/61
CPCE02D5/46E02D19/10E21B10/61E21B12/00E21B17/18E21B21/10E21D9/001
Inventor 严国仙顾国平韩举宇
Owner SHANGHAI MUNICIPAL CONSTR