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Construction method for oblique tunneling of rectangular pipe jacking machine in closed space

A technology of closed space, construction method, applied in the direction of filling, earth square drilling, mining equipment, etc.

Active Publication Date: 2012-06-06
SHANGHAI MECHANIZED CONSTR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem in the prior art that the pipe jacking machine never slanted out of the hole in a narrow area, and to provide a construction method for the rectangular pipe jacking machine to slant out of the hole in a closed space

Method used

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  • Construction method for oblique tunneling of rectangular pipe jacking machine in closed space
  • Construction method for oblique tunneling of rectangular pipe jacking machine in closed space
  • Construction method for oblique tunneling of rectangular pipe jacking machine in closed space

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Embodiment Construction

[0007] Retaining wall construction:

[0008] In order to ensure that the receiving well is closed, a rigid retaining wall is used as the passage to close the receiving well. Easy backfilling work.

[0009] Receiving well backfill sand:

[0010] Ensure that the compactness of the bottom backfill and its height meet the requirements (to meet the compactness of the work of the rectangular pipe jacking machine translation after exiting the hole). Backfill with yellow sand according to the actual height of the hole of 1120mm. Backfill layer by layer according to the map. Use 0.2m 3 The excavator and manual work together to sprinkle water layer by layer and compact back and forth to ensure the compactness of the backfill.

[0011] Steel plate tiling:

[0012] After ensuring the compactness of the yellow sand at the bottom, 30mm thick steel plates are used to lay all over the yellow sand to form a steel platform receiving frame, which is also convenient for the translatio...

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Abstract

The invention relates to a construction method for oblique tunneling of a rectangular pipe jacking machine in a closed space. The construction method is characterized by being composed of the following steps of: sealing a receiving well; sealing a channel access by a rigid retaining wall and backfilling yellow sand by the receiving well; layering and backfilling; paving a steel plate as a platform for the pipe jacking machine to horizontally move; chiseling edge backfilled soil at a concrete edge of a tunnel portal for tunneling; adjusting each parameter and tunneling the pipe jacking machine; stopping and positioning the rectangular pipe jacking machine after tunneling the rectangular pipe jacking machine; grouting pipe sections of a tunnel portal section and closing the tunnel portal; cleaning earthworks and horizontally moving the rectangular pipe jacking machine; straightening the rectangular pipe jacking machine to horizontally move and hoisting in a hoisting hole. The construction method for the oblique tunneling of the rectangular pipe jacking machine in the closed space has the advantages that: the large-angle oblique tunneling problem is solved through the construction; the closed space is formed by backfilling the sand and the soil through the space of a structure of a station and a front cabin has soil pressure in the tunneling process, so as to reach the soil pressure balance; and in the tunneling process, phenomena of water leakage and sand leakage do not happen and conditions of damaging pipelines and grounds of a tunneling region do not occur.

Description

technical field [0001] The invention relates to a construction method for obliquely exiting a hole with a rectangular pipe jacking machine in a closed space. Background technique [0002] With the development of municipal engineering, more and more attention has been paid to the development of underground space. The emergence of the technical field of rectangular jacking pipes can improve the utilization rate of space compared with circular jacking pipes. However, with the increase of urban underground construction, some places are restricted by existing buildings during construction. The pipe jacking machine can no longer exit the hole vertically in a narrow area, but needs to carry out oblique exit in a closed space. Construction, greatly increased the difficulty of construction. Therefore urgently need to develop the construction method that can carry out oblique exit hole in the closed space pipe jacking machine, to solve existing technical problems. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/14E02D17/18
Inventor 唐建忠陈愉
Owner SHANGHAI MECHANIZED CONSTR GRP
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