CN104476765A - A tunnel waterproof board, a waterproof board welding method and a hot-melt welding machine - Google Patents
A tunnel waterproof board, a waterproof board welding method and a hot-melt welding machine Download PDFInfo
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- CN104476765A CN104476765A CN201410567372.2A CN201410567372A CN104476765A CN 104476765 A CN104476765 A CN 104476765A CN 201410567372 A CN201410567372 A CN 201410567372A CN 104476765 A CN104476765 A CN 104476765A
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Abstract
The invention discloses a tunnel waterproof board, a waterproof board welding method and a hot-melt welding machine. In waterproof board interannular overlap joint zones, the front surfaces and/or the back surfaces of the waterproof boards are provided with melt seal welding belts. The distribution direction of the melt seal welding belts is the same as the direction of welding seams of the interannular overlap joint zones. The melting point of a material of the melt seal welding belts is lower than that of a material of the waterproof boards. During welding, a group of extrusion idler wheels are added into the welding machine; at the same time of subjecting the waterproof boards to hot-melt welding or after the hot-melt welding, a heating mechanism of the welding machine heats the melt seal welding belts to melt the melt seal welding belts into a plastic flow state on the waterproof board; the added extrusion idler wheels of the welding machine extrude the melt seal welding belts in the plastic flow state to spread the melt seal welding belts in the plastic flow state to welding seam zones so as to achieve leak repairing and reinforcement of the welding seams and to form continuous and uniform welding seams on the original positions of the melt seal welding belts. Defects of a climb welding technology in tunnel construction are made up, and waterproof construction techniques, equipment levels and waterproof construction quality are improved.
Description
Technical field
The present invention relates to the tunnel splash guards such as a kind of railway, highway, water conservancy, this splash guard effectively can realize welded seal, ensures welding quality.The invention still further relates to the sweating welder adopted in welding method between this splash guard and this welding method.
Background technology
Railway tunnel, vcehicular tunnel, water conservancy anchor bar of waterproof plate in tunnels interannular adopt hot melt portable welding machine of creeping to weld two adjacent splash guards mostly, by splash guard according to function zoning, the region of adjacent two width splash guard overlaps is called interannular overlap or superimposed district, and the width in superimposed district is generally 10-15 centimetre.In current welding procedure, superimposed district center forms the parallel heat smelting crimp connection weld seam of twice, and this weld width is generally 1.5-2 centimetre.
Above-mentioned sweat soldering main technique principle is: adopt heating plate or hot blast, be heated to molten condition, roll through mechanical rollers splash guard superimposed district inner surface material, the crimping of superimposed splash guard is made up.Climb welder in forward plane-welding field as refuse landfill, pond watertight composition, in water works, effect is reliable, but be applied to anchor bar of waterproof plate in tunnels when oppositely welding, because tunnel contour is arcuate structure, for keep splash guard and Tunnel layer closely connected, need reserved sag, splash guard thus be in relaxed state, adding in heat welding process to anchor bar of waterproof plate in tunnels, because collection location is inaccurate, water is also had in tunnel, dust, the factor impacts such as Mechanical Moving traveling speed, affect the uniformity that plate surface, weld zone is heated, be difficult to the uniformity synchronously reaching melt temperature, over-heating then can cause splash guard excessive melting, destroy material body intensity, be difficult to effectively to form firm continuous print and make weld zone up, welding effect is subject to the restriction of execution conditions, it is one of Major Diseases source of current tunnel leak.
Summary of the invention
Technical problem to be solved by this invention is to provide one effectively can realize welded seal, ensures the splash guard of welding quality; In addition, the present invention also provides the sweating welder adopted in welding method between above-mentioned splash guard and this welding method.
For solving the problems of the technologies described above, the present invention has done further improvement to traditional splash guard: both sides are interannular overlap, adjacent two width splash guards are by being welded together at interannular overlap, it is characterized in that: at the interannular overlap of splash guard, the front of splash guard and/or reverse side are provided with and merge sealing fusion seal weld tape splicing, the distribution arrangement of described fusion seal weld tape splicing is identical with the bead direction of interannular overlap, and the fusing point of described fusion seal welding carrying material is lower than the fusing point of splash guard material.The front of splash guard and/or reverse side are provided with and merge seal weld tape splicing and represent: the front of splash guard, reverse side or obverse and reverse are provided with and merge seal weld tape splicing.
The present invention makes full use of and climbs soldering equipment and cardinal principle at present, hot melt can be still adopted to creep welding, according to the process of current railway tunnel construction, utilize and climb the gap that weld seam adjacent region is merged in Welding welding at present, preset at splash guard interannular overlap and merge seal weld tape splicing, the material fusing point of this fusion seal weld tape splicing lower than splash guard mother metal fusing point, positioning molding synchronous with splash guard in splash guard manufacture process.When adding thermal weld to splash guard interannular overlap, merge seal weld tape splicing because fusing point is lower than the fusing point of mother metal, liquid-plastic state can be melted to, weld zone band is incorporated through climbing the extruding of welding machine roller, it is forced to diffuse to the weld metal zone of both sides, to strengthen the mending-leakage reinforcement to original weld seam, form the seal-weld of continuous uniform, close simultaneously and merge the bad leakage point stayed of seal welding welding.
Merge the fusing point of fusing point lower than splash guard material of seal weld tape splicing, when ensureing weld heating, merge seal weld tape splicing and fully melt, usually, the fusing point 50-100 DEG C lower than the fusing point of splash guard material of described fusion seal welding carrying material.
Bottom line realizes technical purpose of the present invention only to be needed: described fusion seal weld tape splicing is arranged on the interannular overlap of splash guard body side, described fusion seal weld tape splicing is arranged on the one side of splash guard body, namely splash guard is only provided with a fusion seal weld tape splicing.
If be welded with twice weld seam between splash guard, described fusion seal weld tape splicing is between twice weld seam, and this is the scheme optimized.Optimized scheme merges seal weld tape splicing to be in the middle of twice weld seam.
Described fusion seal weld tape splicing is greater than weld width apart from the distance at splash guard edge, and the object of this scheme avoids weld seam to exceed interannular overlap.
Described fusion seal weld tape splicing is made up of some tapes, some refers to one or more herein.Preferred fusion seal weld tape splicing is made up of a tape, and general interannular overlap width is 15 centimetres, and this tape is in the middle of interannular overlap, and the width of tape is 15-20mm, and thickness is 0.3-0.6mm, and during welding, weld seam is positioned at the both sides of this tape.
In order to form air pressure method sense channel, in described fusion seal weld tape splicing, arrange isolating bar, the fusing point of described isolating bar material is higher than the fusing point of splash guard material.The heating-up temperature of bonding machine is lower than the fusing point merging seal weld tape splicing, and when the heating arrangements of bonding machine heats fusion seal welding region, isolating bar maintains the original state, around isolating bar, form gap, this gap and air pressure method sense channel.The material of isolating bar can be poromeric material, may be used for like this making up forming the problems such as little or local, gap is not clear and coherent around above-mentioned isolating bar, guarantees that the entirety of air pressure method sense channel is unimpeded.
Welding method between above-mentioned anchor bar of waterproof plate in tunnels, comprises the steps:
(1) splash guard is installed, the interannular overlap of adjacent two width splash guards is superimposed;
(2) adopt bonding machine to carry out sweat soldering, bonding machine carries out sweat soldering along distribution arrangement splash guard merging seal weld tape splicing, and the weld seam of welding is positioned at the both sides of merging seal weld tape splicing;
(3) bonding machine is to while splash guard sweat soldering or after sweat soldering, and the heating arrangements of bonding machine heats fusion seal welding band, makes fusion seal weld tape splicing melt to liquid-plastic state on splash guard;
(4) welded seam area of the roller extruding splash guard of bonding machine forms weld seam;
(5) the fusion seal welding region of the roller extruding liquid-plastic state of bonding machine, make it diffuse to bonding welded seam area, butt welded seam carries out mending-leakage reinforcement, forms the seal-weld of continuous uniform at former fusion seal weld tape splicing place; When merge in seal weld tape splicing be provided with the isolating bar of fusing point higher than splash guard material melting point time, the heating-up temperature of bonding machine is lower than the fusing point merging seal weld tape splicing, when the heating arrangements of bonding machine heats fusion seal welding region, isolating bar maintains the original state, and forms gap around isolating bar.
In addition, described splash guard merges seal welding carrying material and different colours is arranged to by splash guard material, when fusion seal welding band on splash guard is heated, merge seal weld tape splicing and melt to liquid-plastic state on splash guard, the fusion seal weld tape splicing of extruding liquid-plastic state, it is made to diffuse to welded seam area, if weld seam is leaky, then the fusion seal welding carrying material of different colours liquid-plastic state diffuses in weld seam leak, after cooling, to leak reinforcement while on weld seam, the fusion seal welding carrying material of different colours shows leak position.
Anchor bar of waterproof plate in tunnels welding sweating welder, comprise the first squeezing roller and heating arrangements that extruding forms weld seam, characterized by further comprising the second squeezing roller for merging seal weld tape splicing, described second squeezing roller and the first squeezing roller arranged side by side, or second after squeezing roller is positioned at the first squeezing roller, the air outlet of described heating arrangements is covered to and merges seal welding region.
The present invention is according to constructing tunnel produced problem such as railways, JP sends out splash guard of the present invention and correlation technique thereof, makes up and climbs the defect of welding technology in constructing tunnel, eliminates the defect of mainly leaking of tunnel waterproofing layer construction, improve waterproof construction technology and equipment, improve waterproof construction quality.
The advantage of splash guard of the present invention and welding method:
1, climb in weldering process at anchor bar of waterproof plate in tunnels, form the seal-weld that strengthening melting together connects, fundamentally realize the welded seal of two width splash guards, ensure welding quality; Meanwhile, merge band and realize secondary and make up, effective reinforcement being carried out to normal twice weld seam and supplements sealing, thus improve the reliability of the welding water blockoff of weld seam, also omit the step as adopted air pressure to stop leakage in the roof.
2, not changing the main technique technology of current anchor bar of waterproof plate in tunnels welding, only carrying out local improvement to climbing welding machine extrusion structure, be adapted at the constructing tunnel technology field that application is wider at present.
3, do not change material, the manufacturing process equipment of current splash guard, save existing social resources.
4, can apply in the welding in the various superimposed district of splash guard hoop, applicability is strong.
5, excellent to the security function of anchor bar of waterproof plate in tunnels hoop superimposed district's sweat soldering airtight quality, to guarantee construction quality, extend engineering service life, economic worth and social effect are all more great.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is splash guard schematic diagram of the present invention.
Fig. 2 is that splash guard of the present invention is at welding schematic diagram.
Fig. 3 is that splash guard of the present invention is at welding sectional view.
Fig. 4 arranges isolating bar schematic diagram for merging in seal weld tape splicing.
Fig. 5 welds the position view of rear isolating bar.
Fig. 6 is the squeezing roller position view of sweating welder.
Detailed description of the invention
(1) install anchor bar of waterproof plate in tunnels, as shown in Figure 1, its both sides are defined as interannular overlap 2 according to function to anchor bar of waterproof plate in tunnels, and the interannular overlap 2 of adjacent two width splash guards 1 is superimposed together.At the interannular overlap 2 of splash guard 1, the front of splash guard 1 and/or reverse side are provided with and merge seal weld tape splicing 3, namely merge seal weld tape splicing 3 and can be arranged on either side interannular overlap 2, or be arranged on both sides interannular overlap 2 simultaneously, merge any surface (i.e. front or reverse side) that seal weld tape splicing 3 can be arranged on interannular overlap 2, or be arranged on the positive and negative of interannular overlap 2 simultaneously.
Merge seal weld tape splicing 3 and select the redness obstructed with splash guard 1 color, the distribution arrangement merging seal weld tape splicing 3 is identical with weld seam 4 (as shown in Figure 2) direction of interannular overlap 2, and merging seal weld tape splicing 3 can be made up of one or more tape.Merging seal weld tape splicing 3 with the mother metal of splash guard 1 can be the materials such as PE, EVA or PE+EVA, but merges the fusing point of fusing point lower than splash guard 1 material of seal weld tape splicing 3 material, as selected the low 50-100 DEG C of fusing point.
As shown in Figure 4, isolating bar 5 is provided with in fusion seal weld tape splicing 3, the fusing point of described isolating bar 5 material is higher than the fusing point of splash guard 1 material, bonding machine welding temperature is selected to be greater than splash guard 1 body melting temperature and is less than isolating bar 6 material melting point temperature when heating splash guard 1 body, isolating bar 5 can not change, here change refers to can not melting, even melts to liquid-plastic state.When the heating arrangements of bonding machine heats fusion seal weld tape splicing 3 region, isolating bar 5 maintains the original state, and around isolating bar 5, form gap, this gap is as air pressure method sense channel.
Isolating bar 5 can select the high temperature resistant poromeric materials such as high temperature film band, glass fabric, and here high temperature resistant does not limit higher temperature, and the fusing point of high temperature resistant poromeric material here is only greater than splash guard 1 body melting temperature.Certainly, the material of isolating bar 5 can not be poromeric material, selects poromeric material to may be used for making up above-mentioned isolating bar 5 surrounding and forms the problems such as little or local, gap is not clear and coherent, guarantee that the entirety of air pressure method sense channel is unimpeded.
The present embodiment, the interannular overlap 2 of splash guard 1 selects 150mm, and merging seal weld tape splicing 3 is an overall tape 5, and it is positioned at interannular overlap 2 center, and wide 3 degree of tape is 30mm, and thickness is 0.3mm.Isolating bar 5 width is 10mm, and thickness is 0.2mm, and it is arranged on and merges middle part in seal weld tape splicing 3, is positioned on splash guard 1, the fusion seal weld tape splicing 3 that isolating bar 5 top also has 0.1mm thick bottom isolating bar.
The position of merging seal weld tape splicing 3 does not limit the center being positioned at interannular overlap 2, can be amesiality, when amesiality, under double slit climbs weldering situation, needs the position stopping weld seam 4 at interannular overlap 2.
(2) adopt automatic crawling bonding machine to carry out double slit and climb weldering, automatic crawling bonding machine carries out sweat soldering along distribution arrangement splash guard 1 merging seal weld tape splicing, as shown in Figure 2,3, the twice weld seam 4 of welding is positioned at and merges seal weld tape splicing 3 both sides, twice weld seam 4 is close to the wide tape of 30mm, and per pass weld seam 4 width is 20mm.
The automatic crawling bonding machine adopted needs to improve, main improvement is in heating arrangements and squeezing roller part, former automatic crawling bonding machine comprises the first squeezing roller 6 and heating arrangements that extruding forms weld seam, as shown in Figure 6, bonding machine after improvement also comprises the second squeezing roller 7 for merging seal weld tape splicing, described second squeezing roller 7 and the first squeezing roller 6 arranged side by side, or after the second squeezing roller 7 is positioned at the first squeezing roller 6 as shown in Figure 5, and the air outlet of heating arrangements is improved, the air outlet of heating arrangements is covered to and merges seal weld tape splicing 3 region, thus can fusion seal weld tape splicing 3 region between twice weld seam be heated.
(3) bonding machine is to while splash guard 1 sweat soldering or after sweat soldering, and the heating arrangements of bonding machine 1 heats fusion seal weld tape splicing 3, makes fusion seal weld tape splicing 3 melt to liquid-plastic state on splash guard 1.
The present embodiment is selected while sweat soldering, and the heating arrangements of bonding machine heats fusion seal weld tape splicing 3, like this, when adding thermal weld to splash guard 1 interannular overlap 2, merge seal weld tape splicing 3 because fusing point is lower than the fusing point of mother metal, can liquid-plastic state be melted to
(4) welded seam area of roller (i.e. the first squeezing roller 6 in Fig. 6) the extruding splash guard 1 of bonding machine forms weld seam 4.
(5) fusion seal weld tape splicing 3 region of the roller extruding liquid-plastic state of bonding machine, it is made to diffuse to bonding weld seam 4 region, butt welded seam 4 carries out mending-leakage reinforcement, form the seal-weld of continuous uniform at former fusion seal weld tape splicing 3 place while, the leakage point that closed failure welding stays, as shown in Figure 3.
If weld seam 4 is leaky, then fusion seal weld tape splicing 3 material of red liquid-plastic state diffuses in weld seam leak, after cooling, weld seam will occur the leak position of red fusion seal weld tape splicing 3 material display, and now red fusion seal weld tape splicing 3 material carries out reinforcement to leak.If weld seam 4 does not have leak, red fusion seal weld tape splicing 3 material of liquid-plastic state forms the seal-weld of continuous uniform between twice weld seam 4.
When the heating arrangements of bonding machine heats fusion seal weld tape splicing 3 region, isolating bar maintains the original state, and as shown in Figure 5, forms gap around isolating bar, forms air pressure method sense channel, is convenient to later stage butt welded seam and detects.
Above-described embodiment does not limit the present invention in any way, and the technical scheme that the mode that every employing is equal to replacement or equivalent transformation obtains all drops in protection scope of the present invention.
Claims (10)
1. an anchor bar of waterproof plate in tunnels, its both sides are interannular overlap, adjacent two width splash guards are by being welded together at interannular overlap, it is characterized in that: at the interannular overlap of splash guard, the front of splash guard and/or reverse side are provided with and merge seal weld tape splicing, the distribution arrangement of described fusion seal weld tape splicing is identical with the bead direction of interannular overlap, and the fusing point of described fusion seal welding carrying material is lower than the fusing point of splash guard material.
2. anchor bar of waterproof plate in tunnels according to claim 1, is characterized in that: described fusion seal weld tape splicing is arranged on the interannular overlap of splash guard body side.
3. anchor bar of waterproof plate in tunnels according to claim 2, is characterized in that: described fusion seal weld tape splicing is arranged on the one side of splash guard body.
4. the anchor bar of waterproof plate in tunnels according to claim 1,2 or 3, is characterized in that: described fusion seal weld tape splicing is made up of some tapes.
5. anchor bar of waterproof plate in tunnels according to claim 4, is characterized in that: described fusion seal weld tape splicing is made up of a tape.
6. anchor bar of waterproof plate in tunnels according to claim 1, is characterized in that: be provided with isolating bar in described fusion seal weld tape splicing, and the fusing point of described isolating bar material is higher than the fusing point of splash guard material.
7. anchor bar of waterproof plate in tunnels according to claim 6, is characterized in that: described isolating bar material is poromeric material.
8. welding method between the anchor bar of waterproof plate in tunnels according to any one of claim 1-7, is characterized in that comprising the steps:
(1) splash guard is installed, the interannular overlap of adjacent two width splash guards is superimposed;
(2) adopt bonding machine to carry out sweat soldering, bonding machine carries out sweat soldering along distribution arrangement splash guard merging seal weld tape splicing, and the weld seam of welding is positioned at the both sides of merging seal weld tape splicing;
(3) bonding machine is to while splash guard sweat soldering or after sweat soldering, and the heating arrangements of bonding machine heats fusion seal welding band, makes fusion seal weld tape splicing melt to liquid-plastic state on splash guard;
(4) welded seam area of the roller extruding splash guard of bonding machine forms weld seam;
(5) the fusion seal welding region of the roller extruding liquid-plastic state of bonding machine, make it diffuse to bonding welded seam area, butt welded seam carries out mending-leakage reinforcement, forms the seal-weld of continuous uniform at former fusion seal weld tape splicing place; When merge in seal weld tape splicing be provided with the isolating bar of fusing point higher than splash guard material melting point time, the heating-up temperature of bonding machine is lower than the fusing point merging seal weld tape splicing, when the heating arrangements of bonding machine heats fusion seal welding region, isolating bar maintains the original state, and forms gap around isolating bar.
9. welding method between anchor bar of waterproof plate in tunnels according to claim 8, it is characterized in that: described splash guard merges seal welding carrying material and different colours is arranged to by splash guard material, when fusion seal welding band on splash guard is heated, merge seal weld tape splicing and melt to liquid-plastic state on splash guard, the fusion seal weld tape splicing of extruding liquid-plastic state, it is made to diffuse to welded seam area, if weld seam is leaky, then the fusion seal welding carrying material of different colours liquid-plastic state diffuses in weld seam leak, after cooling, to leak reinforcement while on weld seam, the fusion seal welding carrying material of different colours shows leak position.
10. an anchor bar of waterproof plate in tunnels welding sweating welder, comprise the first squeezing roller and heating arrangements that extruding forms weld seam, characterized by further comprising the second squeezing roller for merging seal weld tape splicing, described second squeezing roller and the first squeezing roller arranged side by side, or second after squeezing roller is positioned at the first squeezing roller, the air outlet of described heating arrangements is covered to and merges seal welding region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567372.2A CN104476765B (en) | 2014-10-22 | 2014-10-22 | A tunnel waterproof board, a waterproof board welding method and a hot-melt welding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410567372.2A CN104476765B (en) | 2014-10-22 | 2014-10-22 | A tunnel waterproof board, a waterproof board welding method and a hot-melt welding machine |
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| CN104476765A true CN104476765A (en) | 2015-04-01 |
| CN104476765B CN104476765B (en) | 2017-05-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105235201A (en) * | 2015-10-30 | 2016-01-13 | 安徽五星新型防水建材科技有限公司 | Substrate base connection device used for waterproof cloth production |
| CN107476352A (en) * | 2017-09-07 | 2017-12-15 | 中建五局第三建设有限公司 | A kind of connection method of rubber watertight strip |
| CN111396099A (en) * | 2020-03-30 | 2020-07-10 | 中交第二航务工程局有限公司 | Water seepage prevention construction method for two-lining connecting joint in tunnel |
| CN113123372A (en) * | 2021-04-09 | 2021-07-16 | 中船第九设计研究院工程有限公司 | Vertical HDPE film construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105235201A (en) * | 2015-10-30 | 2016-01-13 | 安徽五星新型防水建材科技有限公司 | Substrate base connection device used for waterproof cloth production |
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| CN111396099B (en) * | 2020-03-30 | 2021-06-11 | 中交第二航务工程局有限公司 | Water seepage prevention construction method for two-lining connecting joint in tunnel |
| CN113123372A (en) * | 2021-04-09 | 2021-07-16 | 中船第九设计研究院工程有限公司 | Vertical HDPE film construction method |
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| CN104476765B (en) | 2017-05-17 |
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