CN1730908A - Reinforcement protection method for inner surface of tunnel - Google Patents
Reinforcement protection method for inner surface of tunnel Download PDFInfo
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- CN1730908A CN1730908A CN 200510010275 CN200510010275A CN1730908A CN 1730908 A CN1730908 A CN 1730908A CN 200510010275 CN200510010275 CN 200510010275 CN 200510010275 A CN200510010275 A CN 200510010275A CN 1730908 A CN1730908 A CN 1730908A
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Abstract
The inner tunnel surface reinforcing and protecting method includes adding polyacrylic emulsion and polyacrylic fiber into waterproof cement mortar to raise the surface strength of inner tunnel surface and to prevent crack, water permeation and high temperature blowout. The method includes the first compounding waterproof cement mortar with cement, sand, water and polyacrylic emulsion in the ratio of 1 to 0.5-0.7 to 0.4-0.6 to 0.005-0.008; the subsequent mixing polyacrylic fiber in the amount of 0.006-0.008 of cement mortar weight with cement mortar to form modified cement mortar; and final spraying the modified cement mortar to the inner surface of the concrete structure. The polyacrylic fiber resists the stresses of cement shrinking in different directions to raise the strength of solidified waterproof mortar and raise the fireproof limit. In addition, the grille net has crack resisting reinforcing effect.
Description
Technical field:
The present invention relates to a kind of method for reinforcing and protecting to inner surface of tunnel.
Background technology:
At present, being used to travel, the tunnel of the vehicles adopts basically all is reinforced concrete structure, but this structure phenomenons such as microcrack, infiltration still often occur with the prolongation inner surface of tunnel of service life, the water that infiltrates causes corrosion harmfulness to the various facilities and equipment in the tunnel, also shorten the application life in tunnel, more be not easy to the current of the vehicles.Sign as modern city---subway brings very large convenience for townsfolk's trip, but phenomenons such as microcrack that the subway tunnel inner surface occurs and infiltration, the solution that also has nothing highly effective at present.The concrete of inner surface of tunnel explosion easily under the environment of high temperature in addition if catch fire in the tunnel, can cause the large tracts of land of body of wall to damage.
Summary of the invention:
The method for reinforcing and protecting that the purpose of this invention is to provide a kind of inner surface of tunnel to improve the surface strength of inner surface of tunnel, solves crack, infiltration and the high temperature explosion problem of inner surface of tunnel.Technical scheme of the present invention comprises the steps: one, prepares cement waterproofing mortar, cement waterproofing mortar is fully mixed by following components in part by weight, cement: sand: water: polyacrylic acid emulsion=1: 0.5～0.7: 0.4～0.6: 0.005～0.008; Two, by cement waterproofing mortar: the weight ratio of polypropylene fibre=1: 0.006～0.008 fully is mixed into polypropylene fibre in cement waterproofing mortar, make modified cement mortar, and the length of polypropylene fibre is 6～15 millimeters; Three, modified cement mortar is ejected on the inner surface in tunnel of concrete structure, modified cement mortar solidifies the reinforcement protected working of just having finished inner surface of tunnel by the time.Owing to taked method of the present invention to be provided with topping on the inner surface of tunnel, polypropylene fibre is resisting the stress that cement shrinks on all directions, has therefore greatly reduced the possibility of cement cracking, has also improved the intensity after waterproofing mortar solidifies.The polyacrylic acid emulsion reduces the possibility of tunnel wall infiltration as cementing agent and waterproof agent.In addition, because polypropylene fibre and polyacrylic acid emulsion all are organic matters, can melt after being heated, make the tiny pore that gathers in the tunnel body of wall after fusing is flowed out, if catch fire, the gas that expands behind the high temperature in the body of wall is overflowed from pore, high pressure can be do not produced, therefore just the body of wall explosion can not be made yet.Method of the present invention has the advantage of simple, the with low cost and reliable operation of step, has bigger promotional value.It both can be used for having occurred the reinforcement in the tunnel in crack, the finish protective treatment in advance in tunnel that the crack also do not occur that also can being used for has just constructed.
Description of drawings:
Fig. 1 covers on the inner surface 1 in tunnel in the embodiment of the present invention two and is fixed with grid 2, solidifies the structural representation that modified cement mortar 3 is arranged, and Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment:
The specific embodiment one: present embodiment is realized by following step:, the preparation cement waterproofing mortar, cement waterproofing mortar is fully mixed by following components in part by weight, cement: sand: water: polyacrylic acid emulsion=1: 0.5～0.7: 0.4～0.6: 0.005～0.008; Two, by cement waterproofing mortar: the weight ratio of polypropylene fibre=1: 0.006～0.008 fully is mixed into polypropylene fibre in cement waterproofing mortar, make modified cement mortar, the length of polypropylene fibre is 6～15 millimeters, and the diameter of polypropylene fibre is 5～10 microns; Three, modified cement mortar is ejected on the inner surface in tunnel of concrete structure, modified cement mortar solidifies the reinforcement protected working of just having finished inner surface of tunnel by the time.Cement is selected the P.032.5 product of model for use, and sand selects for use granularity less than 4.75 millimeters, the medium sand of fineness modulus 2.4～2.9.
The specific embodiment two: specify present embodiment below in conjunction with Fig. 1 and Fig. 2.The difference of present embodiment and embodiment one is: also comprise the steps: to cover and fixed grating aperture plate 2 on the inner surface 1 in tunnel before step 1, the composite material that latticed grid 2 is made up of carbon fiber and epoxy resin is made.Other step is identical with embodiment one.Latticed grid 2 is equivalent to the skeleton of modified cement mortar, has improved the intensity of being solidified the formed topping in back by modified cement mortar.Electric fixtures in the subway system can produce stray electrical current when operation in addition, and stray electrical current is more serious to the electrochemical corrosion of the various metallic network of pipelines in agent structure reinforcing bar and the certain limit in the tunnel, causes certain harm.The present invention covers the grid 2 that contains carbon fiber on the inner surface 1 in tunnel; be equivalent to one " faraday cup " has been installed in the tunnel; form a full-shield systems for providing electrostatic discharge protection; the electric fixtures pass in the tunnel in " faraday cup "; prevent the outside disperse of stray electrical current, protected the metal pipe line of interior hardware of tunnel wall and close subway system.Grid 2 is fixed on the inner surface 1 in tunnel by steel nail 4
The specific embodiment three: the difference of present embodiment and embodiment two is: grid 2 is a carbon fiber by volume ratio: epoxy resin=30～35: 100 component is formed, epoxy resin is as matrix material, and carbon fiber fully is blended in to solidify in the epoxy resin and forms grid 2.Carbon fiber can be selected the product or the homemade same based carbon fiber of the T700 model of toray company for use, and it is the product of E54 that epoxy resin is selected model for use.The width of mesh of grid 2 is B * C=100 millimeter * 100 millimeter, also can design voluntarily according to concrete needs.Other step is identical with embodiment two.
Claims (4)
1, the method for reinforcing and protecting of inner surface of tunnel, it is characterized in that it comprises the steps: one, prepares cement waterproofing mortar, cement waterproofing mortar is fully mixed by following components in part by weight, cement: sand: water: polyacrylic acid emulsion=1: 0.5～0.7: 0.4～0.6: 0.005～0.008; Two, by cement waterproofing mortar: the weight ratio of polypropylene fibre=1: 0.006～0.008 fully is mixed into polypropylene fibre in cement waterproofing mortar, make modified cement mortar, and the length of polypropylene fibre is 6～15 millimeters; Three, modified cement mortar is ejected on the inner surface in tunnel of concrete structure, modified cement mortar solidifies the reinforcement protected working of just having finished inner surface of tunnel by the time.
2, the method for reinforcing and protecting of inner surface of tunnel according to claim 1, it is characterized in that also comprising the steps: before step 1 that the inner surface (1) in the tunnel upward covers and fixed grating aperture plate (2), the composite material that latticed grid (2) is made up of carbon fiber and epoxy resin is made.
3, the method for reinforcing and protecting of inner surface of tunnel according to claim 2, it is characterized in that grid (2) is a carbon fiber by volume ratio: epoxy resin=30～35: 100 component is formed, epoxy resin is as matrix material, and carbon fiber fully is blended in the epoxy resin and solidifies.
4, the method for reinforcing and protecting of inner surface of tunnel according to claim 1, the diameter that it is characterized in that polypropylene fibre are 5～10 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100102754A CN100535393C (en) | 2005-08-19 | 2005-08-19 | Reinforcement protection method for inner surface of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100102754A CN100535393C (en) | 2005-08-19 | 2005-08-19 | Reinforcement protection method for inner surface of tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1730908A true CN1730908A (en) | 2006-02-08 |
| CN100535393C CN100535393C (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100102754A Expired - Fee Related CN100535393C (en) | 2005-08-19 | 2005-08-19 | Reinforcement protection method for inner surface of tunnel |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016843B (en) * | 2007-02-12 | 2010-05-19 | 上海市隧道工程轨道交通设计研究院 | Connecting method used between lining segment and inner lining of shield tunnel |
| CN101793097A (en) * | 2010-03-17 | 2010-08-04 | 丰润建筑安装股份有限公司 | Method for processing light partition panel slab joints of buildings |
| CN101871351A (en) * | 2010-06-18 | 2010-10-27 | 成都威邦科技有限公司 | Method for reinforcing and protecting inner surface of tunnel |
| CN102408204A (en) * | 2010-09-26 | 2012-04-11 | 同济大学 | High-performance concrete capable of resisting high-temperature cracking |
| CN102661149A (en) * | 2012-04-18 | 2012-09-12 | 中铁隧道集团三处有限公司 | Construction method for transforming existing civil air defense sections into metro sections |
| CN103061780A (en) * | 2012-12-25 | 2013-04-24 | 上海隧道工程股份有限公司 | Operating tunnel structure reinforcement construction method through steel ring |
| CN103912285A (en) * | 2014-03-27 | 2014-07-09 | 神华集团有限责任公司 | Coal mine roadway blocking method |
| CN105863681A (en) * | 2016-06-27 | 2016-08-17 | 西北大学 | Quick protecting method for sloughing and sand sliding of roof of excavated sandy loess tunnel |
| CN107601993A (en) * | 2017-09-14 | 2018-01-19 | 温州隆盛市政建设有限公司 | A kind of inner surface of tunnel supporting material and preparation method and reinforcement |
| CN111499259A (en) * | 2020-04-07 | 2020-08-07 | 三峡大学 | Preparation method of steel fiber resin concrete, strength testing method and layer spraying process |
| CN111852070A (en) * | 2020-08-03 | 2020-10-30 | 西安科技大学 | Supporting and reinforcing structure and method for irregular cave top of ancient cave |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661154A (en) * | 2012-05-14 | 2012-09-12 | 云南农业大学 | Double-layer structural concrete for lining tunnel under condition of terrestrial heat erosion and construction method of double-layer structural concrete |
-
2005
- 2005-08-19 CN CNB2005100102754A patent/CN100535393C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016843B (en) * | 2007-02-12 | 2010-05-19 | 上海市隧道工程轨道交通设计研究院 | Connecting method used between lining segment and inner lining of shield tunnel |
| CN101793097A (en) * | 2010-03-17 | 2010-08-04 | 丰润建筑安装股份有限公司 | Method for processing light partition panel slab joints of buildings |
| CN101793097B (en) * | 2010-03-17 | 2011-06-15 | 丰润建筑安装股份有限公司 | Method for processing light partition panel slab joints of buildings |
| CN101871351A (en) * | 2010-06-18 | 2010-10-27 | 成都威邦科技有限公司 | Method for reinforcing and protecting inner surface of tunnel |
| CN101871351B (en) * | 2010-06-18 | 2012-08-22 | 成都威邦科技有限公司 | Method for reinforcing and protecting inner surface of tunnel |
| CN102408204A (en) * | 2010-09-26 | 2012-04-11 | 同济大学 | High-performance concrete capable of resisting high-temperature cracking |
| CN102661149A (en) * | 2012-04-18 | 2012-09-12 | 中铁隧道集团三处有限公司 | Construction method for transforming existing civil air defense sections into metro sections |
| CN102661149B (en) * | 2012-04-18 | 2014-12-10 | 中铁隧道集团三处有限公司 | Construction method for transforming existing civil air defense sections into metro sections |
| CN103061780B (en) * | 2012-12-25 | 2015-09-09 | 上海隧道工程股份有限公司 | Operation tunnel structure steel loop reinforced construction method |
| CN103061780A (en) * | 2012-12-25 | 2013-04-24 | 上海隧道工程股份有限公司 | Operating tunnel structure reinforcement construction method through steel ring |
| CN103912285A (en) * | 2014-03-27 | 2014-07-09 | 神华集团有限责任公司 | Coal mine roadway blocking method |
| CN105863681A (en) * | 2016-06-27 | 2016-08-17 | 西北大学 | Quick protecting method for sloughing and sand sliding of roof of excavated sandy loess tunnel |
| CN107601993A (en) * | 2017-09-14 | 2018-01-19 | 温州隆盛市政建设有限公司 | A kind of inner surface of tunnel supporting material and preparation method and reinforcement |
| CN107601993B (en) * | 2017-09-14 | 2020-11-03 | 温州隆盛市政建设有限公司 | Tunnel inner surface reinforcing material, preparation method and reinforcing method |
| CN111499259A (en) * | 2020-04-07 | 2020-08-07 | 三峡大学 | Preparation method of steel fiber resin concrete, strength testing method and layer spraying process |
| CN111852070A (en) * | 2020-08-03 | 2020-10-30 | 西安科技大学 | Supporting and reinforcing structure and method for irregular cave top of ancient cave |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100535393C (en) | 2009-09-02 |
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