Construction Method of Secondary Lining of Prefabricated Concrete Pipe in Small Diameter Tunnel
A precast concrete and construction method technology, applied in tunnel lining, earthwork drilling, tunnels, etc., can solve the problems of difficult mechanical configuration, long distance, narrow space, etc. Effect
Active Publication Date: 2021-01-12
深圳市广汇源水利建筑工程有限公司
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Problems solved by technology
Small-diameter tunnels refer to tunnels that are designed according to the specifications and are slightly larger than the minimum diameter of 1.8 meters. The construction is a limited and confined space operation, often with long distances, difficulties in mechanical matching, and small spaces.
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementat...
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The invention discloses a small-hole-diameter tunnel precast concrete pipe secondary lining construction method and relates to the technical field of water resources and hydropower engineering. The construction method includes the following steps of manufacturing and installation of a pipeline, concrete transportation, I sequence fine aggregate concrete backfill perfusion, circular construction, II sequence pipeline back filling grouting, and inspection and acceptance. The small-hole-diameter tunnel precast concrete pipe secondary lining construction method has the beneficial effects that a precast secondary lining concrete pipe is adopted to ensure the overall structural quality of a whole tunnel, the construction period can be greatly shortened, and the overall construction quality is ensured by being combined with processes of a water swelling rubber ring, primary pouring fine aggregate concrete, secondary grouting and the like.
Description
technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, and more specifically, the invention relates to a construction method for the secondary lining of a prefabricated concrete pipe in a small-diameter tunnel. Background technique [0002] The second lining of the tunnel generally refers to the first ring of concrete lining in the primary support of the tunnel. "Second lining" is a term in tunnel construction. When the tunnel is excavated, move forward along the face of the tunnel, and then the four sides of the tunnel that has been dug need to be reinforced. "Second lining" refers to the work that still needs to be reinforced for the second time around the reinforced tunnel. [0003] In the construction of small-diameter tunnels in water conservancy and hydropower projects, the construction of the secondary lining is a key process that directly determines the construction progress of the entire project and the ...
Claims
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IPC IPC(8): E21D11/10E21D11/08
CPCE21D11/08E21D11/083E21D11/105
Inventor 林秋展吴红军张贝贝古志军姚廷涛刘嘉洁曾仕霞
Owner 深圳市广汇源水利建筑工程有限公司