Construction method for underground grounded screen

A construction method and grounding grid technology, applied in the direction of connection, connection contact material, static electricity, etc., can solve the problems of long front, low construction efficiency, theft, etc., achieve the effect of small material resistance, good welding quality, and prevent theft
CN101304148AActive Publication Date: 2008-11-12CHINA RAILWAY FIRST GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY FIRST GRP CO LTD
Publication Date
2008-11-12

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Abstract

The invention relates to a subway grounding grid construction method, which comprises the following steps: the accurate positions for the installation of a horizontal grounding body and a vertical grounding body are determined; ditches are excavated; the horizontal and the vertical grounding bodies are produced and installed; grounding outlet wires are installed; the ditches are backfilled and tamped; in the process of the production and installation of the horizontal grounding body and the vertical grounding body, both the horizontal grounding bodies and the horizontal grounding body and the vertical grounding body are connected by heat release weld that is improved; the horizontal grounding body uses copper bars; the vertical grounding body uses copper tubes; the grounding grid grounding outlet wires use the copper bars. The subway grounding grid construction method has the advantages of high construction efficiency and excellent welding quality, fully guaranteeing the quality of a subway grounding grid project, and effectively preventing the phenomenon of the theft of grounding outlet wires after the installation method of the subway grounding grid grounding outlet wires is improved.
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Description

technical field

[0001] The invention belongs to the field of subway construction, and in particular relates to a method for constructing a subway grounding grid. Background technique

[0002] At present, grounding in construction projects is generally divided into working grounding, protective grounding, lightning protection grounding, and anti-static grounding. The construction of subway grounding grids belongs to working grounding and protective grounding.

[0003] The construction characteristics of the general subway station grounding grid are as follows:

[0004] Construction materials: use galvanized flat steel, angle steel, etc., whose physical and chemical properties such as electrical conductivity, thermal conductivity, corrosion resistance and ductility need to be improved;

[0005] Construction method: arc welding is adopted, and the tools used for arc welding are electric welding machine, welding rod, welding torch, etc., which require an external power supply, ...

Claims

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