CN102787851B - Leaking stoppage method for seam of duct piece of power cable tunnel - Google Patents

Leaking stoppage method for seam of duct piece of power cable tunnel Download PDF

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Publication number
CN102787851B
CN102787851B CN201110131436.0A CN201110131436A CN102787851B CN 102787851 B CN102787851 B CN 102787851B CN 201110131436 A CN201110131436 A CN 201110131436A CN 102787851 B CN102787851 B CN 102787851B
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CN
China
Prior art keywords
power cable
seam
cable tunnel
leak stopping
shutoff
Prior art date
Application number
CN201110131436.0A
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Chinese (zh)
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CN102787851A (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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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 CN201110131436.0A priority Critical patent/CN102787851B/en
Publication of CN102787851A publication Critical patent/CN102787851A/en
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Publication of CN102787851B publication Critical patent/CN102787851B/en

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Abstract

The invention relates to a leaking stoppage method for a seam of a duct piece of a power cable tunnel. The leaking stoppage method comprises the following steps of: chiseling and widening a gap, plugging an inner cavity, caulking by using flexible materials and carrying out chemical grouting processing so that leaking stoppage is performed on the seam of the duct piece of the power cable tunnel. Compared with the prior art, the leaking stoppage method provided by the invention has the characteristics of simplicity in operation, convenience in leaking stoppage, convenience and quickness in processing fissures occurred in the power cable tunnel and better corrosion resistance.

Description

Power cable tunnel segment joint 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 joint 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, causes serious harmful effect.

The harm of electric power tunnel structure differential settlement is mainly: (1) causes tunnel duct piece gaping of joints, and water resistance reduces; (2) cause tunnel structure to be in disadvantageous stress, unstability increases; (3) increase the subsidiary stress of cable, cause that distortion of the cable is excessive even to be destroyed.

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 leak stopping is convenient, and corrosion resistance carries out the method for leak stopping preferably to power cable tunnel segment joint.

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

Power cable tunnel segment joint is carried out to the method for leak stopping, it is characterized in that, the method comprises the wide gap of cutter, shutoff inner chamber, flexible material filleting, chemical grouting treatment step, carries out leak stopping to power cable tunnel segment joint.

The method specifically comprises the following steps:

(1) widen the seam on power cable tunnel section of jurisdiction, the inner chamber of the seam of widening of then finding time or embed half round bar or PE foam strip in the seam of widening, butt joint carries out shutoff;

(2) by the seam of shutoff, grouting nozzle is being installed, then is carrying out ejection for water plugging by grouting nozzle to seam crossing injection injecting paste material;

(3) 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 glass fabric are set at joint surface, namely complete the leak stopping to power cable tunnel segment joint.

The described seam of widening is for cut a hole into splay configuration groove along crack, and the degree of depth is 35 ~ 40mm, and width is 20 ~ 25mm, and rinses well with clear water.

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

Described macromolecule injecting paste material is acrylamide or epoxy resin.

Compared with prior art, the present invention is simple to operate, and leak stopping is convenient, can facilitate rapid must process the crack occurred in power cable tunnel, 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 joint is carried out to the method for leak stopping, the method, by the wide gap of cutter, shutoff inner chamber, flexible material filleting, chemical grouting treatment step, is carried out leak stopping to power cable tunnel segment joint, is specifically comprised the following steps:

(1) widen the seam being less than 2cm on power cable tunnel section of jurisdiction, the seam of widening is for cut a hole into splay configuration groove along crack, and the degree of depth is 35mm, and width is 25mm, and rinses well with clear water, the inner chamber of the seam of widening of then finding time;

(2) by the seam of shutoff, grouting nozzle is being installed, then is carrying out ejection for water plugging by grouting nozzle to seam crossing injection polyurethane injection slurry;

(3) 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;

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

Embodiment 2

Power cable tunnel segment joint is carried out to the method for leak stopping, the method, by the wide gap of cutter, shutoff inner chamber, flexible material filleting, chemical grouting treatment step, is carried out leak stopping to power cable tunnel segment joint, is specifically comprised the following steps:

(1) widen the seam being less than 2cm on power cable tunnel section of jurisdiction, the seam of widening is for cut a hole into splay configuration groove along crack, and the degree of depth is 40mm, width is 20mm, and rinse well with clear water, then in the seam of widening, embed PE foam strip, butt joint carries out shutoff;

(2) by the seam of shutoff, grouting nozzle is being installed, then is carrying out ejection for water plugging by grouting nozzle to seam crossing injection ring epoxy resins macromolecule injecting paste material;

(3) 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 deck epoxy glass fabric is set at joint surface, namely completes the leak stopping to power cable tunnel segment joint.

Embodiment 3

Power cable tunnel segment joint is carried out to the method for leak stopping, the method, by the wide gap of cutter, shutoff inner chamber, flexible material filleting, chemical grouting treatment step, is carried out leak stopping to power cable tunnel segment joint, is specifically comprised the following steps:

(1) widen the seam being less than 2cm on power cable tunnel section of jurisdiction, the seam of widening is for cut a hole into splay configuration groove along crack, and the degree of depth is 40mm, width is 20mm, and rinse well with clear water, then in the seam of widening, embed PE foam strip, butt joint carries out shutoff;

(2) by the seam of shutoff, grouting nozzle is being installed, then is carrying out ejection for water plugging by grouting nozzle to seam crossing injection acrylamide macromolecule injecting paste material;

(3) 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 deck epoxy glass fabric is set at joint surface, namely completes the leak stopping to power cable tunnel segment joint.

Claims (4)

1. pair power cable tunnel segment joint carries out the method for leak stopping, it is characterized in that, the method comprises the wide gap of cutter, shutoff inner chamber, flexible material filleting, chemical grouting treatment step, carries out leak stopping, specifically comprise the following steps power cable tunnel segment joint:
(1) widen the seam on power cable tunnel section of jurisdiction, the inner chamber of the seam of widening of then finding time or embed half round bar or PE foam strip in the seam of widening, butt joint carries out shutoff;
(2) by the seam of shutoff, grouting nozzle is being installed, then is carrying out ejection for water plugging by grouting nozzle to seam crossing injection injecting paste material;
(3) 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 glass fabric are set at joint surface, namely complete the leak stopping to power cable tunnel segment joint.
2. method of power cable tunnel segment joint being carried out to leak stopping according to claim 1, is characterized in that, the described seam of widening is for cut a hole into splay configuration groove along crack, and the degree of depth is 35 ~ 40mm, and width is 20 ~ 25mm, and rinses well with clear water.
3. method of power cable tunnel segment joint 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.
4. method of power cable tunnel segment joint being carried out to leak stopping according to claim 3, is characterized in that, described macromolecule injecting paste material is acrylamide or epoxy resin.
CN201110131436.0A 2011-05-20 2011-05-20 Leaking stoppage method for seam of duct piece of power cable tunnel CN102787851B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110131436.0A CN102787851B (en) 2011-05-20 2011-05-20 Leaking stoppage method for seam of duct piece of power cable tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110131436.0A CN102787851B (en) 2011-05-20 2011-05-20 Leaking stoppage method for seam of duct piece of power cable tunnel

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CN102787851A CN102787851A (en) 2012-11-21
CN102787851B true CN102787851B (en) 2015-03-18

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Families Citing this family (4)

* 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
CN106761850A (en) * 2016-11-18 2017-05-31 国网北京市电力公司 Glass shield shell and its installation method
CN107387123B (en) * 2017-08-22 2019-02-19 中铁十一局集团城市轨道工程有限公司 The construction method of pressure grouting leak stopping is carried out for shield duct piece piece leakage phenomenon
CN110410112A (en) * 2019-07-26 2019-11-05 大禹伟业(北京)国际科技有限公司 A kind of tunnel project seam waterproof construction method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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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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

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

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