CN104806843A - Steel cylinder mesh suspended mortar spray compound lining and pressure pipe non-excavation repair method - Google Patents
Steel cylinder mesh suspended mortar spray compound lining and pressure pipe non-excavation repair method Download PDFInfo
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- CN104806843A CN104806843A CN201510106906.6A CN201510106906A CN104806843A CN 104806843 A CN104806843 A CN 104806843A CN 201510106906 A CN201510106906 A CN 201510106906A CN 104806843 A CN104806843 A CN 104806843A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
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Abstract
The invention relates to a steel cylinder mesh suspended mortar spray compound lining and a pressure pipe non-excavation repair method to be used for performing non-excavation repair on old pressure pipes and culverts, with the diameters being more than 0.8m, which cannot bear established work pressure. The compound lining is formed by a two-layer structure of a steel cylinder layer and a steel wire mesh reinforcement mortar layer from the outside to the inside. A steel cylinder of the steel cylinder layer is arranged on the inside of an oil pipe inner mortar bottom layer, and the mortar bottom layer is sprayed on the cleaned old pipe inner wall during repair directly. A steel wire mesh is covered by the steel wire mesh reinforcement mortar layer and is welded and anchored in the steel cylinder of the steel cylinder layer, and mortar of certain thickness is sprayed on the surfaces of the steel cylinder and the steel wire mesh to form the steel wire mesh reinforcement mortar layer. The two layers of structures are fixedly connected to form the steel cylinder mesh suspended mortar spray compound lining. By applying the method, non-excavation repair of old pipes can be achieved, and the pipe pressure operation and prolonging of the pipe service life can be achieved without reducing the pipe cross section apparently.
Description
Technical field
The present invention relates to the method for a kind of steel cylinder linked network spraying mortar compound lining and pressure piping non-excavation rehabilitation, be called for short: SC-RCP technology, specifically a kind of for set working pressure cannot be born, steel cylinder linked network that the pressure piping (culverts) of more than diameter 0.8m carries out non-excavation rehabilitation sprays mortar compound lining and pressure piping carried out to the method for non-excavation rehabilitation.
Background technique
At present, China has a large amount of major diameters to have pressure conduit pipe, tap water main, water conservancy culvert, have the pipelines such as pressure water pipe, heating power, after a long time use, and the Frequent Accidents such as seepage, booster, pipeline can not safe operation under set working pressure, needs badly and repairs; These large-diameter pipelines mostly are concrete reinforced pipe and metal tube.At present for the pressure piping of this two classes material, relatively feasible non-excavation rehabilitation scheme is: in old pipeline, insert minor diameter plastic tube or metal tube, the maximum shortcoming of this kind of scheme is, the pipeline of new insertion can cause old pipeline flow section significantly to reduce, and causes the carrying capacity of pipe after reparation not enough; And entering new plastic tube or metal tube in large diameter tube trace interpolation, difficulty of construction is very big.
Summary of the invention
The object of the invention is to overcome problems of the prior art, and a kind of steel cylinder linked network spraying mortar compound lining for repairing pressure piping is provided, and a kind of method being used for this steel cylinder linked network spraying mortar compound lining to repair pressure piping under no-dig technique condition is provided, use the method for compound lining of the present invention and pressure piping non-excavation rehabilitation, can under the prerequisite significantly not reducing pipeline flow section, improve pipeline and resist the ability of interior pressure, extend pipeline working life simultaneously.
For achieving the above object, the technical measures that the present invention adopts are: the steel cylinder linked network spraying mortar compound lining providing a kind of pressure piping non-excavation rehabilitation, be provided with steel wire reinforced mortar layer, also be provided with steel cylinder layer, described compound lining is made up of steel cylinder layer and steel wire reinforced mortar layer double-layer structure from outside to inside; The steel cylinder of described steel cylinder layer to be arranged in old pipeline to be repaired inside mortar bond coat, steel wire is enclosed with in described steel wire reinforced mortar layer, steel wire is anchored at inside the steel cylinder of steel cylinder layer by welding, then formed by the mortar of design spraying required thickness on steel cylinder, steel wire surface; Described steel cylinder layer and steel wire reinforced mortar layer double-layer structure are consolidated and constitute steel cylinder linked network spraying mortar compound lining for pressure piping non-excavation rehabilitation.
The diameter of the pressure piping of described non-excavation rehabilitation is more than 0.8m.
Steel wire in steel cylinder in described steel cylinder layer and steel wire reinforced mortar layer should adopt common iron or the stainless steel of identical material, adopts during common iron and should carry out antirust treatment.
The present invention also provides a kind of method adopting above-mentioned steel cylinder linked network spraying mortar compound lining pressure piping non-excavation rehabilitation, first thoroughly cleans old pipe interior, and removes the clast of its inside, silt and the hard fulcrum of projection; Implement as follows again:
Step (1), adopt centrifugal spraying device or hand spray mode at cleaned old pressure piping inner wall construction, spraying mortar bond coat, makes inner-walls of duct rounding, without protruding hard fulcrum;
Step (2), the internal diameter of old pressure piping to be repaired on demand by steel plate is processed into a joint joint pipe in advance;
Step (3), step (1) spray mortar bond coat shaping after, pipe is sent into old pipe interior precalculated position, struts, make together with outer surface of tube blank fits tightly with spraying mortar bond coat, a complete joint steel cylinder section after the pipe welded closed strutted, to be formed; Again each joint steel cylinder section is weldingly connected into a whole piece continuous print steel cylinder pipeline along pipe lengths, and is in place;
Step (4), by the steel wire of selected specification on request weld anchor be affixed to whole piece steel cylinder inner-walls of duct;
(5), by centrifugal spraying method or hand spray mortar is sprayed to steel wire and steel cylinder inner surface of pipeline by design thickness requirement by step equably, forms the steel wire reinforced mortar layer of uniform ground;
(6), to completing the rear steel wire reinforced mortar layer of spraying step carries out maintenance consolidation by related specifications, and the steel cylinder linked network spraying mortar compound lining that final formation steel cylinder layer and steel wire reinforced mortar layer double-layer structure are consolidated, realizes the reparation of pressure piping.
The linked network of steel cylinder described in the present invention spraying mortar compound lining be mainly used in cannot bear set working pressure, the pressure piping (culvert) of more than diameter 0.8m as: supply pipe, have pressure water pipe, water conservancy culvert, thermal pipe, fuel tube etc. to carry out non-excavation rehabilitation, the present invention is that major diameter pressure piping (culvert) provides a kind of practicable non-excavation repairing technique.Steel cylinder wherein and steel wire reinforced mortar compound lining be adopt the steel plate of thin-walled be processed into pipe strut in old pipeline after welding fabrication, and steel wire is anchored at steel cylinder inwall in a welding manner, then spray mortar steel cylinder, steel wire are covered completely be consolidated after formed a kind of composite lining structure.
When steel cylinder linked network spraying mortar composite lining structure in the present invention designs, bear whole internal water pressure by outer steel cylinder, steel wire of internal layer net reinforced mortar layer bears vacuum pressure and pipe pressure outside; Steel wire mainly plays reinforced mortar and steel cylinder adhesion strength, control mortar ftractures, and prevents inside liner fragmentation from waiting effect.
Centrifugal spraying method described in the present invention is the technology of will the mortar of coming be carried at a distance to be thrown to inner-walls of duct under the influence of centrifugal force uniformly by the sprayer of High Rotation Speed.
The base of steel pipe described in the present invention uses design specification, meets that steel plate that fed sheet of a media requires is curling to be formed, and the length and width size that steel plate intercepts should meet the requirement of line size.
The method of steel cylinder linked network spraying mortar compound lining of the present invention and pressure piping non-excavation rehabilitation compared with prior art has following beneficial effect:
1., steel cylinder linked network spraying mortar compound lining of the present invention can be used for carrying out structural non-excavation rehabilitation to the pressure piping of all kinds of tubing such as metal tube, concrete pipe, glass reinforced plastic sand pipe, more than diameter 0.8m.
2., the present invention adopts steel cylinder linked network to spray the method for mortar compound lining pressure piping non-excavation rehabilitation, repair the easy to operate of pressure piping, can according to condition changes such as pipe diameter, pressure, buried depth environment, flexible design steel cylinder linked network spraying mortar composite lining structure and size, and can freely arrange to repair segment length; Steel cylinder linked network of the present invention spraying mortar compound lining can guarantee that the sealing of repairing rear pipeline is intact, can extend pipeline working life reliable and securely.
3., the present invention is a kind of practicable method that can be used for the old pressure piping of non-excavation rehabilitation major diameter (culvert).Use compound lining of the present invention and pressure piping trenchless repairing method, can under the prerequisite significantly not reducing pipeline flow section, improve the anti-internal pressure capability of pipeline, realized the effect of dilatation operation by the raising of the operating pressure of pipeline, the pipeline after reparation can be made to possess the conveyance capacity stronger than old pipeline.
Accompanying drawing explanation
The steel cylinder linked network spraying mortar composite lining structure schematic diagram of Fig. 1 pressure piping non-excavation rehabilitation of the present invention.
Fig. 2 steel cylinder linked network spraying of the present invention mortar compound lining pressure piping non-excavation rehabilitation schematic diagram.
In above-mentioned figure: the old pipeline of 1-; 2-mortar bond coat; 3-steel cylinder layer; 4-steel wire; 5-steel wire reinforced mortar layer; 6-centrifugal spraying device; 7-sprayer frame; 8-carrier pipe.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described, but enforcement of the present invention is not limited thereto.
Embodiment 1: the steel cylinder linked network spraying mortar compound lining that the invention provides a kind of pressure piping non-excavation rehabilitation, comprise steel cylinder layer 3 and steel wire reinforced mortar layer 5, its structure as shown in Figure 1.Described compound lining is made up of steel cylinder layer 3, steel wire reinforced mortar layer 5 double-layer structure from outside to inside; Described steel cylinder layer 3 is arranged in old pipeline inside mortar bond coat 2, and mortar bond coat is painted on cleaned old inner-walls of duct when repairing old pressure piping; Be enclosed with steel wire 4 in described steel wire reinforced mortar layer 5, steel wire is anchored at inside the steel cylinder of steel cylinder layer 3 by welding, then formed by the mortar of design spraying required thickness on steel cylinder, steel wire 4 surface; Described steel cylinder layer 3 and steel wire reinforced mortar layer 5 double-layer structure are consolidated and constitute steel cylinder linked network spraying mortar compound lining.
The described diameter carrying out pressure piping non-excavation rehabilitation is more than 0.8m.
Steel wire 4 in steel cylinder in steel cylinder layer 3 described in the present embodiment and steel wire reinforced mortar layer 5 adopts the steel of stainless steel.
Embodiment 2: the invention provides a kind of steel cylinder linked network spraying mortar compound lining and the method for pressure piping non-excavation rehabilitation, first thoroughly clean old pipeline 1 inside to be repaired, and remove the clast of old pipeline 1 inside, silt and the hard fulcrum of projection; Implement as follows again:
Step (1), adopt centrifugal spraying device 6 at cleaned old pressure piping 1 inner wall construction, spraying mortar bond coat 2, makes old pressure piping 1 inwall rounding, without protruding hard fulcrum.
Step (2), according to the specification of old pipeline 1, bury the condition such as condition, design pressure underground, bear the steel cylinder thickness of interior pressure and bear the thickness of steel wire reinforced mortar layer 5 of external pressure and vacuum pressure by design, selects steel plate and steel wire material and screed thickness; The internal diameter of the old pressure piping repaired on demand by the steel plate chosen is processed into a joint joint pipe in advance.
Step (3), after the mortar bond coat 2 of spraying is shaping, pipe is sent into old pipe interior precalculated position, strut, makes together with outer surface of tube blank fits tightly with spraying mortar bond coat 2, will form complete one and save steel cylinder section after the pipe welded closed strutted; Again each joint steel cylinder section is weldingly connected into a whole piece continuous print steel cylinder pipeline along pipe lengths, and is in place, form steel cylinder layer 3.
Step (4), by the steel wire 4 of selected specification on request weld anchor be affixed to whole piece steel cylinder inner-walls of duct.
(5), in pipeline centrifugal spraying device 6 is erected in sprayer frame 7 by step, mortar at a distance will be transported in centrifugal spraying device 6 by carrier pipe 8, open centrifugal spraying device 6 switch, by the sprayer of High Rotation Speed by mortar under the influence of centrifugal force spray be uniformly thrown to inner-walls of duct; As shown in Figure 2; By the thickness requirement of design, mortar is sprayed to steel wire and steel cylinder pipe surface equably, form the steel wire reinforced mortar layer 5 of uniform ground.
(6), to completing the steel wire reinforced mortar layer 5 after spraying step carries out maintenance consolidation by related specifications, the steel cylinder linked network spraying mortar compound lining that final formation steel cylinder layer 3 and steel wire reinforced mortar layer 5 double-layer structure are consolidated, completes the reparation of pressure piping.
The method of steel cylinder linked network spraying mortar compound lining of the present invention and pressure piping non-excavation rehabilitation, repair the easy to operate of pressure piping, after pipeline rehabilitation, sealing is intact, can under the prerequisite significantly not reducing pipeline flow section, improve the anti-internal pressure capability of pipeline, make it that there is stronger conveyance capacity, reliably extend pipeline working life.
Claims (4)
1. the steel cylinder linked network spraying mortar compound lining of a pressure piping non-excavation rehabilitation, be provided with steel wire reinforced mortar layer, it is characterized in that: be also provided with steel cylinder layer, described compound lining is made up of steel cylinder layer and steel wire reinforced mortar layer double-layer structure from outside to inside; The steel cylinder of described steel cylinder layer to be arranged in old pipeline to be repaired inside mortar bond coat, steel wire is enclosed with in described steel wire reinforced mortar layer, steel wire is anchored at inside the steel cylinder of steel cylinder layer by welding, then formed by the mortar of design spraying required thickness on steel cylinder, steel wire surface; Described steel cylinder layer and steel wire reinforced mortar layer double-layer structure are consolidated and constitute steel cylinder linked network spraying mortar compound lining for pressure piping non-excavation rehabilitation.
2. the steel cylinder linked network spraying mortar compound lining of pressure piping non-excavation rehabilitation according to claim 1, is characterized in that: the diameter of the pressure piping of described non-excavation rehabilitation is more than 0.8m.
3. the steel cylinder linked network spraying mortar compound lining of pressure piping non-excavation rehabilitation according to claim 1, it is characterized in that: the steel wire in the steel cylinder in described steel cylinder layer and steel wire reinforced mortar layer should adopt common iron or the stainless steel of identical material, adopt during common iron and should carry out antirust treatment.
4. adopt a method for steel cylinder linked network according to claim 1 spraying mortar compound lining pressure piping non-excavation rehabilitation, first old pipe interior is thoroughly cleaned, and remove clast and the hard fulcrum of projection of its inside; It is characterized in that, then implement as follows:
Step (1), adopt centrifugal spraying device or hand spray mode at cleaned old pressure piping inner wall construction, spraying mortar bond coat, makes inner-walls of duct rounding, without protruding hard fulcrum;
Step (2), the internal diameter of old pressure piping to be repaired on demand by steel plate is processed into a joint joint pipe in advance;
Step (3), step (1) spray mortar bond coat shaping after, pipe is sent into old pipe interior precalculated position, struts, make together with outer surface of tube blank fits tightly with spraying mortar bond coat, a complete joint steel cylinder section after the pipe welded closed strutted, to be formed; Again each joint steel cylinder section is weldingly connected into a whole piece continuous print steel cylinder pipeline along pipe lengths, and is in place;
Step (4), by the steel wire of selected specification on request weld anchor be affixed to whole piece steel cylinder inner-walls of duct;
(5), by centrifugal spraying method or hand spray mortar is sprayed to steel wire and steel cylinder inner surface of pipeline by design thickness requirement by step equably, forms the steel wire reinforced mortar layer of uniform ground;
(6), to completing the rear steel wire reinforced mortar layer of spraying step carries out maintenance consolidation by related specifications, and the steel cylinder linked network spraying mortar compound lining that final formation steel cylinder layer and steel wire reinforced mortar layer double-layer structure are consolidated, realizes the reparation of pressure piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106906.6A CN104806843B (en) | 2015-03-12 | 2015-03-12 | Steel cylinder mesh suspended mortar spray compound lining and pressure pipe non-excavation repair method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510106906.6A CN104806843B (en) | 2015-03-12 | 2015-03-12 | Steel cylinder mesh suspended mortar spray compound lining and pressure pipe non-excavation repair method |
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| CN104806843A true CN104806843A (en) | 2015-07-29 |
| CN104806843B CN104806843B (en) | 2017-05-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799691A (en) * | 2017-05-02 | 2018-11-13 | 湖南前鑫管业有限公司 | Pipeline maintenance device |
| CN109237198A (en) * | 2018-11-12 | 2019-01-18 | 上海辉拓市政工程有限公司 | A kind of urban underground water drainage pipe road profession restorative procedure |
| CN111411980A (en) * | 2020-04-23 | 2020-07-14 | 李泽阳 | Water delivery tunnel lining structure capable of bearing high internal and external water pressure and construction method |
| CN111804551A (en) * | 2020-06-29 | 2020-10-23 | 新兴铸管股份有限公司 | Method for processing cement lining of cast iron pipe |
| CN112895111A (en) * | 2021-01-14 | 2021-06-04 | 衡水瑟林科技有限公司 | Pipeline in-situ repairing method |
| CN112922384A (en) * | 2021-02-01 | 2021-06-08 | 上海予通管道工程技术有限公司 | Mortar spraying repair construction method |
| CN113074290A (en) * | 2021-03-18 | 2021-07-06 | 东莞市广渠建筑工程有限公司 | Non-excavation repairing system and repairing method for steel cylinder hanging net spraying mortar composite lining pipe |
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| CN201242014Y (en) * | 2008-08-21 | 2009-05-20 | 濮阳市中拓管道清洗修复工程有限公司 | Large caliber inner lining restoring composite pipeline |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799691A (en) * | 2017-05-02 | 2018-11-13 | 湖南前鑫管业有限公司 | Pipeline maintenance device |
| CN109237198A (en) * | 2018-11-12 | 2019-01-18 | 上海辉拓市政工程有限公司 | A kind of urban underground water drainage pipe road profession restorative procedure |
| CN111411980A (en) * | 2020-04-23 | 2020-07-14 | 李泽阳 | Water delivery tunnel lining structure capable of bearing high internal and external water pressure and construction method |
| CN111804551A (en) * | 2020-06-29 | 2020-10-23 | 新兴铸管股份有限公司 | Method for processing cement lining of cast iron pipe |
| CN112895111A (en) * | 2021-01-14 | 2021-06-04 | 衡水瑟林科技有限公司 | Pipeline in-situ repairing method |
| CN112922384A (en) * | 2021-02-01 | 2021-06-08 | 上海予通管道工程技术有限公司 | Mortar spraying repair construction method |
| CN113074290A (en) * | 2021-03-18 | 2021-07-06 | 东莞市广渠建筑工程有限公司 | Non-excavation repairing system and repairing method for steel cylinder hanging net spraying mortar composite lining pipe |
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| Publication number | Publication date |
|---|---|
| CN104806843B (en) | 2017-05-03 |
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