CN102808630B - Method for plugging power cable tunnel duct piece bolt hole - Google Patents

Method for plugging power cable tunnel duct piece bolt hole Download PDF

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Publication number
CN102808630B
CN102808630B CN201110148953.9A CN201110148953A CN102808630B CN 102808630 B CN102808630 B CN 102808630B CN 201110148953 A CN201110148953 A CN 201110148953A CN 102808630 B CN102808630 B CN 102808630B
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CN
China
Prior art keywords
bolt hole
power cable
leak stopping
cable tunnel
duct piece
Prior art date
Application number
CN201110148953.9A
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Chinese (zh)
Other versions
CN102808630A (en
Inventor
苏文群
王承
李海
叶菲菲
梁浩
钱锡汇
杨雨冰
谢雄耀
Original Assignee
上海市电力公司
国家电网公司
上海电力设计院有限公司
同济大学
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Publication date
Application filed by 上海市电力公司, 国家电网公司, 上海电力设计院有限公司, 同济大学 filed Critical 上海市电力公司
Priority to CN201110148953.9A priority Critical patent/CN102808630B/en
Publication of CN102808630A publication Critical patent/CN102808630A/en
Application granted granted Critical
Publication of CN102808630B publication Critical patent/CN102808630B/en

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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

Power cable tunnel segment bolt hole is carried out to the method for leak stopping

Technical field

The present invention relates to a kind of method of leak stopping, especially relate to a kind of method of power cable tunnel segment bolt hole being carried out to leak stopping.

Background technology

Along with a large amount of construction and the operation in domestic and international tunnel, tunnel Longitudinal Settlement particularly longitudinal uneven subsidence shows especially gradually.There is excessive Longitudinal Settlement or differential settlement for various reasons in a large amount of soft soil tunnel, cause water seepage of tunnel and leak mud or local failure of structure, or internal construction generation Longitudinal Warping distortion, affect the normal operation in tunnel, there is necessarily potential threat to tunnel structure safety, the safety of operating and comfortableness, and then have influence on again the operation of surrounding and all kinds of structure in earth's surface.For traffic tunnel, if the longitudinal differential settlement in tunnel is excessive, the longitudinal difference of height in road surface will be caused excessive, and road surface difference of height and planarization have exceeded standard, during car operation, safety and comfortableness are just difficult to be protected, and cause ordinary maintenance and maintenance task to increase the weight of; For power cable tunnel, when longitudinal strain is excessive, subsidiary stress can be brought to make it be out of shape to cable, time serious, even can cause the destruction of cable, affect electric power conveying.Therefore the longitudinal differential settlement in tunnel causes huge economic loss to tunnel operation and management department and country, even causes serious social harmful effect.

Cable waterproof is the important component part of cable running safety management, power cable ducks in drink larger to the safe operation of power cable, aging effects for a long time, therefore, electric power tunnel waterproof problem is extremely important, as off quality in waterproof construction, impeded drainage leads to, to make in hole moist, to the durability of electromechanical facility and power cable in air quality, hole, that flexibility is is unfavorable.During runing, underground water usually through concrete lining deformation joint, constuction joint, crack even the passage seepage such as concrete pore enter in tunnel, cause the metallic structures such as cable bearer, fixture to be in wet environment and corrosion, mildew and rot, rotten, inefficacy occur, if drainage system system imperfection, tunnel or active well ponding, will have a strong impact on daily monitoring and the safe operation of cable.

Summary of the invention

Object of the present invention is exactly provide a kind of simple to operate to overcome defect that above-mentioned prior art exists, and the method for leak stopping is carried out in leak stopping easily to power cable tunnel segment bolt hole.

Object of the present invention can be achieved through the following technical solutions:

Power cable tunnel segment bolt hole is carried out to the method for leak stopping, it is characterized in that, first the method carries out expansion seam along tunnel duct piece bolt hole, then completes the leak stopping process to bolt hole by shutoff inner chamber, chemical grouting and close encapsulation.

The method specifically comprises the following steps:

(1) carry out the process of expansion seam along tunnel duct piece bolt hole, the degree of depth expanding the bolt hole after seam is 4cm, and width is 3cm;

(2) in the surrounding raggle of bolt hole, then embed PE foam strip wherein and carry out shutoff, and grouting nozzle is installed;

(3) go out to inject injecting paste material by grouting nozzle to seam and carry out ejection for water plugging;

(4) after slip casting completes, wait injecting paste material to solidify and remove grouting nozzle, then the injected hole at grouting nozzle place is installed in shutoff;

(5) one organic silicon water-proofing layer or epoxy resin waterproofing course are set at joint surface, namely complete the leak stopping to power cable tunnel segment bolt hole.

Described injecting paste material is polyurethane injection slurry or macromolecule injecting paste material.

Described macromolecule injecting paste material is acrylamide or Luo lignin.

Segment bolt in described bolt hole, for can turn bolt, embeds polysulfide sealing compound or water-swellable sealing compound after unscrewing.

Compared with prior art, the present invention is simple to operate, and leak stopping is convenient, can facilitate rapid must process the crack that power cable tunnel segment bolt hole place occurs, and corrosion resistance is better.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is described in detail.

Embodiment 1

Power cable tunnel segment bolt hole is carried out to the method for leak stopping, first the method carries out expansion seam along tunnel duct piece bolt hole, then completes the leak stopping process to bolt hole by shutoff inner chamber, chemical grouting and close encapsulation, specifically comprises the following steps:

(1) carry out the process of expansion seam along tunnel duct piece bolt hole, the degree of depth expanding the bolt hole after seam is 4cm, and width is 3cm;

(2) in the surrounding raggle of bolt hole, then embed PE foam strip wherein and carry out shutoff, and grouting nozzle is installed;

(3) go out to inject polyurethane injection slurry by grouting nozzle to seam and carry out ejection for water plugging;

(4) after slip casting completes, wait polyurethane injection slurry solidify and remove grouting nozzle, then the injected hole at grouting nozzle place is installed in shutoff, if the segment bolt in bolt hole is for can turn bolt, after unscrewing, embeds polysulfide sealing compound;

(5) one organic silicon water-proofing layer is set at joint surface, namely completes the leak stopping to power cable tunnel segment bolt hole.

Embodiment 2

Power cable tunnel segment bolt hole is carried out to the method for leak stopping, first the method carries out expansion seam along tunnel duct piece bolt hole, then completes the leak stopping process to bolt hole by shutoff inner chamber, chemical grouting and close encapsulation, specifically comprises the following steps:

(1) carry out the process of expansion seam along tunnel duct piece bolt hole, the degree of depth expanding the bolt hole after seam is 4cm, and width is 3cm;

(2) in the surrounding raggle of bolt hole, then embed PE foam strip wherein and carry out shutoff, and grouting nozzle is installed;

(3) go out to inject acrylamide macromolecule injecting paste material by grouting nozzle to seam and carry out ejection for water plugging;

(4) after slip casting completes, wait macromolecule injecting paste material solidify and remove grouting nozzle, then the injected hole at grouting nozzle place is installed in shutoff;

(5) one organic silicon water-proofing layer or epoxy resin waterproofing course are set at joint surface, namely complete the leak stopping to power cable tunnel segment bolt hole.

Embodiment 3

Power cable tunnel segment bolt hole is carried out to the method for leak stopping, first the method carries out expansion seam along tunnel duct piece bolt hole, then completes the leak stopping process to bolt hole by shutoff inner chamber, chemical grouting and close encapsulation, specifically comprises the following steps:

(1) carry out the process of expansion seam along tunnel duct piece bolt hole, the degree of depth expanding the bolt hole after seam is 4cm, and width is 3cm;

(2) in the surrounding raggle of bolt hole, then embed PE foam strip wherein and carry out shutoff, and grouting nozzle is installed;

(3) go out to inject Luo lignin macromolecule injecting paste material by grouting nozzle to seam and carry out ejection for water plugging;

(4) after slip casting completes, wait macromolecule injecting paste material solidify and remove grouting nozzle, then the injected hole at grouting nozzle place is installed in shutoff;

(5) one organic silicon water-proofing layer or epoxy resin waterproofing course are set at joint surface, namely complete the leak stopping to power cable tunnel segment bolt hole.

Claims (3)

1. the method for leak stopping is carried out in pair power cable tunnel segment bolt hole, it is characterized in that, first the method carries out expansion seam along tunnel duct piece bolt hole, then completes the leak stopping process to bolt hole by shutoff inner chamber, chemical grouting and close encapsulation, specifically comprises the following steps:
(1) carry out the process of expansion seam along tunnel duct piece bolt hole, the degree of depth expanding the bolt hole after seam is 4cm, and width is 3cm;
(2) in the surrounding raggle of bolt hole, then embed PE foam strip wherein and carry out shutoff, and grouting nozzle is installed;
(3) go out to inject injecting paste material by grouting nozzle to seam and carry out ejection for water plugging;
(4) after slip casting completes, wait injecting paste material to solidify and remove grouting nozzle, then the injected hole at grouting nozzle place is installed in shutoff;
(5) one organic silicon water-proofing layer or epoxy resin waterproofing course are set at joint surface, namely complete the leak stopping to power cable tunnel segment bolt hole;
Segment bolt in described bolt hole, for can turn bolt, embeds polysulfide sealing compound or water-swellable sealing compound after unscrewing.
2. method of power cable tunnel segment bolt hole being carried out to leak stopping according to claim 1, is characterized in that, described injecting paste material is polyurethane injection slurry or macromolecule injecting paste material.
3. method of power cable tunnel segment bolt hole being carried out to leak stopping according to claim 2, is characterized in that, described macromolecule injecting paste material is acrylamide or Luo lignin.
CN201110148953.9A 2011-06-03 2011-06-03 Method for plugging power cable tunnel duct piece bolt hole CN102808630B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110148953.9A CN102808630B (en) 2011-06-03 2011-06-03 Method for plugging power cable tunnel duct piece bolt hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110148953.9A CN102808630B (en) 2011-06-03 2011-06-03 Method for plugging power cable tunnel duct piece bolt hole

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CN102808630A CN102808630A (en) 2012-12-05
CN102808630B true CN102808630B (en) 2015-06-17

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971642A (en) * 2016-06-30 2016-09-28 北京城建七建设工程有限公司 Water seepage treatment device and method for abutted seam of shield segments
CN106593488B (en) * 2016-11-23 2019-07-05 同济大学 A kind of high hydraulic pressure shield tunnel bolt hole hermetic water-proof structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832143A (en) * 2010-04-02 2010-09-15 云南云岭高速公路养护绿化工程有限公司 Method for treating tunnel water leakage
CN101943006A (en) * 2010-09-07 2011-01-12 长安大学 Treatment method of water leakage of construction joints of tunnel
CN102011596A (en) * 2010-11-29 2011-04-13 中铁三局集团有限公司 Shield originating or receiving end tunnel portal maintenance process
CN102061063A (en) * 2010-12-10 2011-05-18 湖北省京珠高速公路管理处 Epoxy resin injecting paste material for maintenance of road engineering and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000192779A (en) * 1998-12-28 2000-07-11 Kubota Corp Joint structure of pipe for use in earthquake-resistant pipe propulsion method
JP3298848B2 (en) * 1999-07-01 2002-07-08 株式会社ケー・エフ・シー Tunnel waterproof structure and its construction method
CN1243923C (en) * 2002-08-26 2006-03-01 上海科鸣建筑工程技术有限公司 Underground reinforced concrete pipiline joint waterproofing leaking stoppage repairing method
US20090278321A1 (en) * 2007-08-13 2009-11-12 Press-Seal Gasket Corporation Internal pipe seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832143A (en) * 2010-04-02 2010-09-15 云南云岭高速公路养护绿化工程有限公司 Method for treating tunnel water leakage
CN101943006A (en) * 2010-09-07 2011-01-12 长安大学 Treatment method of water leakage of construction joints of tunnel
CN102011596A (en) * 2010-11-29 2011-04-13 中铁三局集团有限公司 Shield originating or receiving end tunnel portal maintenance process
CN102061063A (en) * 2010-12-10 2011-05-18 湖北省京珠高速公路管理处 Epoxy resin injecting paste material for maintenance of road engineering and preparation method thereof

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ASS Succession or assignment of patent right

Owner name: STATE GRID CORPORATION OF CHINA SHANGHAI ELECTRIC

Free format text: FORMER OWNER: SHANGHAI ELECTRIC POWER DESIGN INSTITUTE CO., LTD. TONGJI UNIVERSITY

Effective date: 20121217

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20121217

Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122

Applicant after: Shanghai Electric Power Corporation

Applicant after: State Grid Corporation of China

Applicant after: Shanghai Electric Power Design Institute Limited

Applicant after: Tongji University

Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122

Applicant before: Shanghai Electric Power Corporation

Applicant before: Shanghai Electric Power Design Institute Limited

Applicant before: Tongji University

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