Two-time positioning construction process for pre-buried channels of overhead line system of high-speed railway tunnel

A pre-buried channel and tunnel contact technology, which is applied in tunnels, tunnel linings, shaft linings, etc., can solve the problems of pre-buried channels that are difficult to remedy, power outages, and lack of experience, so as to reduce the amount of rework and save rework Cost, the effect of speeding up the construction progress

Active Publication Date: 2015-07-22
中铁二十四局集团福建铁路建设有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The installation and positioning of catenary pre-buried channel is one of the very important key processes in the tunnel construction process. It is difficult to repair the pre-buried channel after the tunnel lining is installed, and the maintenance cost is high. The installation effect of the pre-buried channel directly affects The operation status of the railway in the later period
[0003] In recent years, my country's high-speed rail lines have experienced too many problems that caused power outages and train suspensions due to catenary problems. problem appear
At present, many front-line workers of the tunnel pre-buried channel in my country are inexperienced and have not received professional training. In addition, the construction site conditions are not good, so the efficiency of the workers in the process of channel construction is low, and the accuracy cannot meet the design requirements, resulting in Frequent catenary problems in the later period

Method used

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  • Two-time positioning construction process for pre-buried channels of overhead line system of high-speed railway tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one: if figure 1 As shown, a high-speed railway tunnel catenary pre-buried channel secondary positioning construction process, according to the following steps:

[0025] 1. Construction preparation

[0026] 1. According to the design drawings and on-site construction environment, formulate and implement reinforcement measures for the second lining trolley, and provide sufficient construction lighting environment.

[0027] 2. Equip a professional construction team and construction personnel, provide corresponding skill training and technical disclosure to workers, and provide required mechanical equipment and various materials.

[0028] 3. Determine all types of channels involved in the tunnel according to the design drawings, and accurately cut out "T"-shaped bolt holes on the second lining trolley according to all the dimensions involved in the channels, and pay attention to the process of cutting the trolley The following questions:

[0029] 1) Use a sol...

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Abstract

The invention relates to a two-time positioning construction process for pre-buried channels of an overhead line system of a high-speed railway tunnel. By adjusting the procedure of installing the pre-buried channels, a larger operation space is provided for construction, and operators can conveniently and rapidly install channel sets on a lining trolley and can rapidly install C type channel sets, D type channel sets and E type channel sets by standing on edges of the lining trolley by means of frames such as ladders. The channels can be positioned in advance while secondary lining reinforcing steel bars are bound, time is used while the space is used sufficiently, multiple steps are executed at the same time and do not affect one another, and the result is gained with half effort.

Description

technical field [0001] The invention relates to a secondary positioning construction technology for a catenary pre-buried channel of a high-speed railway tunnel. Background technique [0002] The catenary is a high-voltage transmission line erected along the sky above the rails in a zigzag shape in the electrified railway, and it is a high-voltage transmission line for the pantograph to take current. It is responsible for directly transmitting the electric energy obtained from the traction substation to the electric locomotive. Therefore, the quality and working status of the catenary will directly affect the transportation capacity of the electrified railway. The installation and positioning of catenary pre-buried channel is one of the very important key processes in the tunnel construction process. It is difficult to repair the pre-buried channel after the tunnel lining is installed, and the maintenance cost is high. The installation effect of the pre-buried channel direct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10
CPCE21D11/00E21D11/10
Inventor 张维武邓历振黄崇崧陈济熙江成弟陈盛
Owner 中铁二十四局集团福建铁路建设有限公司
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