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Method for forming underground structure roof

An underground structure and roof technology, which is applied in underground chambers, earthwork drilling, wellbore lining, etc., can solve problems such as the difficulty of pouring the structural roof, and achieve the effect of solving the difficulty of pouring and increasing stability

Inactive Publication Date: 2019-04-12
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 provide a method for forming the roof of an underground structure to solve the problem of difficulty in pouring the roof of the structure in the underground square passage

Method used

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  • Method for forming underground structure roof
  • Method for forming underground structure roof
  • Method for forming underground structure roof

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Embodiment Construction

[0042] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. 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.

[0043] As mentioned in the background technology, large-scale square-section underground passages can be formed in soft soil geological conditions by using the frozen underground excavation method, but there are difficulties in realizing the formation of roof structures in the formed square passages.

[0044] The inventors have found that because the channel is formed by the underground excavation method, when making the roof of the structure, the required thickness (height) of the roof is 1 meter to 1.2 meters, an...

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Abstract

The invention provides a method for forming an underground structure roof. The method comprises the following steps of: forming an underground excavation channel under an existing earth surface building, and arranging a primary support in the underground excavation channel; forming a concrete pouring and tamping hole in the top of the underground excavation channel; laying an upper row of steel bars and a lower row of steel bars in an area for roof formation, wherein the upper row of steel bars and the lower row of steel bars are welded with the primary support; and finally, arranging a roof formwork; pouring concrete into the roof formwork in a partitioned mode through the concrete pouring and tamping hole to form a roof. According to the method, the steel bars are laid firstly, and the steel bars and the primary support system are welded together to improve the structural stability during concrete pouring; then concrete is conveyed to the top of the underground excavation channel from the ground through the roof concrete pouring and tamping hole to form an underground structure roof, so that the problem that pouring of the structure roof in the underground square channel is difficult is solved.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a method for forming an underground structure roof. Background technique [0002] There are several construction methods in the prior art for constructing underground structures without moving or destroying existing buildings, such as shield method, pipe jacking method, mine method, circular pipe curtain method (pipe shed method). The shield tunneling method and the pipe jacking method are construction methods in which the excavation equipment is advanced and followed by the prefabricated structure. The construction structure is mainly in the form of a tunnel, and the space and form of the structure are limited by the shape of the tunnel section, which is not suitable for complex underground structures. Construction; the mining method is a construction method for constructing tunnels by excavating underground tunnels. The mining method has high requirements...

Claims

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Application Information

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IPC IPC(8): E21D11/10
CPCE21D11/102E21D11/105E21D11/107
Inventor 裘水根孙林黄炜焱谢树鑫郝明强马霞军
Owner SHANGHAI MECHANIZED CONSTR GRP
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