Method for plugging power cable tunnel duct piece bolt hole

A technology for tunnel segments and power cables, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc. It can solve problems such as poor drainage, moisture in the tunnel, and cable damage, and achieves simple operation, good corrosion resistance, and plugging convenient effect

Active Publication Date: 2015-06-17
SHANGHAI MUNICIPAL ELECTRIC POWER CO +3
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traffic tunnels, if the longitudinal uneven settlement of the tunnel is too large, the longitudinal height difference of the road surface will be too large, and the road surface height difference and flatness exceed the standard. The maintenance task is aggravated; for the power cable tunnel, when the longitudinal deformation is too large, it will bring additional stress to the cable to deform it, and even cause damage to the cable in severe cases, affecting power transmission
Therefore, the longitudinal uneven settlement of the tunnel has caused huge economic losses to the tunnel operation management department and the country, and even caused serious social adverse effects.
[0003] Cable waterproofing is an important part of cable safety operation management. Long-term soaking of power cables in water has a great impact on the safe operation and life of power cables. Therefore, the waterproofing of power tunnels is very important. It will make the cave humid, which is detrimental to the air quality, the durability and flexibility of the electromechanical facilities and power cables in the cave
During the operation period, groundwater often leaks into the tunnel through channels such as concrete lining deformation joints, construction joints, cracks and even concrete pores, causing metal structures such as cable brackets and clamps to be in a humid environment and rust, mildew, deterioration, and failure. Incomplete drainage system, water accumulation in tunnels or working wells will seriously affect the daily monitoring and safe operation of cables

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for plugging the bolt holes of electric cable tunnel segments. This method first expands the bolt holes along the tunnel segments, and then completes the plugging of the bolt holes by sealing the inner cavity, chemical grouting and sealing. Specifically Include the following steps:

[0020] (1) Expansion treatment is carried out along the bolt holes of the tunnel segment. The depth of the bolt holes after expansion is 4cm and the width is 3cm;

[0021] (2) Dig grooves around the bolt holes, insert PE foam strips into them for sealing, and install grouting nozzles;

[0022] (3) Inject polyurethane grouting liquid into the joint through the grouting nozzle for grouting and water sealing;

[0023] (4) After the grouting is completed, wait for the polyurethane grouting liquid to solidify and remove the grouting nozzle, and then block the grouting hole where the grouting nozzle is installed. If the segment bolts in the bolt holes are screwable bolts, Insert polysu...

Embodiment 2

[0026] A method for plugging the bolt holes of electric cable tunnel segments. This method first expands the bolt holes along the tunnel segments, and then completes the plugging of the bolt holes by sealing the inner cavity, chemical grouting and sealing. Specifically Include the following steps:

[0027] (1) Expansion treatment is carried out along the bolt holes of the tunnel segment. The depth of the bolt holes after expansion is 4cm and the width is 3cm;

[0028] (2) Dig grooves around the bolt holes, insert PE foam strips into them for sealing, and install grouting nozzles;

[0029] (3) Inject acrylamide polymer grouting material into the joint through the grouting nozzle for grouting and water sealing;

[0030] (4) After the grouting is completed, wait for the polymer grouting material to solidify and remove the grouting nozzle, and then block the grouting hole where the grouting nozzle is installed;

[0031] (5) Install a silicone waterproof layer or epoxy resin wate...

Embodiment 3

[0033] A method for plugging the bolt holes of electric cable tunnel segments. This method first expands the bolt holes along the tunnel segments, and then completes the plugging of the bolt holes by sealing the inner cavity, chemical grouting and sealing. Specifically Include the following steps:

[0034] (1) Expansion treatment is carried out along the bolt holes of the tunnel segment. The depth of the bolt holes after expansion is 4cm and the width is 3cm;

[0035] (2) Dig grooves around the bolt holes, insert PE foam strips into them for sealing, and install grouting nozzles;

[0036] (3) Inject the Luomusu polymer grouting material into the joint through the grouting nozzle for grouting and water sealing;

[0037] (4) After the grouting is completed, wait for the polymer grouting material to solidify and remove the grouting nozzle, and then block the grouting hole where the grouting nozzle is installed;

[0038] (5) Install a silicone waterproof layer or epoxy resin wat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for plugging a power cable tunnel duct piece bolt hole, which comprises the following steps: firstly processing expansion and seam along a tunnel dust piece bolt hole; then, blocking an inner cavity, injecting slurry chemically and processing airtight so as to complete plugging treatment for a bolt hole. Compared with the prior art, the method is characterized by simple operation and convenient plugging and can quickly treat fissure appeared on the power cable tunnel duct piece bolt hole; in addition, corrosion-resistant performance is relatively good.

Description

technical field [0001] The invention relates to a method for plugging leakage, in particular to a method for plugging bolt holes in electric cable tunnel segments. Background technique [0002] With the construction and operation of a large number of tunnels at home and abroad, the problem of tunnel longitudinal settlement, especially longitudinal uneven settlement, has gradually emerged. A large number of soft soil tunnels have excessive longitudinal settlement or uneven settlement due to various reasons, causing water seepage and mud leakage in the tunnel or partial structural damage, or longitudinal distortion of the internal structure, affecting the normal operation of the tunnel and affecting the safety of the tunnel structure and operation. There are certain potential threats to safety and comfort, which in turn affect the operation of various structures around and on the ground. For traffic tunnels, if the longitudinal uneven settlement of the tunnel is too large, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D11/38
Inventor 苏文群王承李海叶菲菲梁浩钱锡汇杨雨冰谢雄耀
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap