CN219840664U - Expansion water stop strip with glue injection holes - Google Patents
Expansion water stop strip with glue injection holes Download PDFInfo
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- CN219840664U CN219840664U CN202320780062.3U CN202320780062U CN219840664U CN 219840664 U CN219840664 U CN 219840664U CN 202320780062 U CN202320780062 U CN 202320780062U CN 219840664 U CN219840664 U CN 219840664U
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- glue injection
- water stop
- stop strip
- glue
- joint
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- 239000003292 glue Substances 0.000 title claims abstract description 111
- 238000002347 injection Methods 0.000 title claims abstract description 108
- 239000007924 injection Substances 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000003566 sealing material Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 description 10
- 239000011324 bead Substances 0.000 description 6
- 229920002943 EPDM rubber Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000565 sealant Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The expansion water stop strip with glue injecting holes includes one water stop strip body of elastic sealing material for blocking the leakage seam or joint, and several glue injecting holes in the water stop strip body to penetrate the water stop strip body for injecting gel from outside into the leakage seam or joint. The expansion water stop strip is provided with a plurality of glue injection holes, and in the anti-leakage construction, gel can be directly injected into the inside of a leak or a joint through the glue injection holes, so that the leak or the joint is plugged. Compared with the existing chemical grouting antiseep technology, the chemical grouting antiseep construction scheme adopting the expansion water stop strip does not need to drill inclined holes on concrete, so that time and labor are saved, the strength of the concrete is not affected, and meanwhile, adverse effects caused by concrete scraps entering a glue injection space and the tightness of gel are avoided.
Description
Technical Field
The utility model relates to the field of engineering leakage prevention, in particular to an expansion water stop strip with glue injection holes.
Background
For construction and maintenance of projects such as tunnels, subways, underground pipe galleries and the like, leakage prevention and seepage prevention are problems which must be solved, such as leakage prevention of a tunnel secondary lining.
As shown in fig. 1, the construction of the secondary lining of the tunnel is advanced segment by segment, and joints exist between adjacent concrete 1 segments. The presence of the seam has both good and bad aspects. A good aspect is that space is reserved for expansion of the secondary liner; a disadvantageous aspect is that leakage protection measures need to be taken. In order to prevent the water leakage of the joints, the prior leakage prevention measure is to pre-embed a water stop plate 2 (also called a water stop belt, usually a steel plate or a rubber strip) when pouring concrete, and isolate the groundwater 3 with two liners at one side of the soil layer through the water stop plate 2. Practice proves that the water-proof effect of the water-proof plate is not completely reliable, and the water-proof plate and the concrete cannot be sealed without gaps; secondly, under the influence of factors such as vibration, cold and hot expansion, erosion, ageing, etc., gaps can be gradually generated between the water stop plate and the concrete. Some joints can leak water or water seepage after construction, and some joints leak water or water seepage after the tunnel is put into use for a plurality of years.
The latest leakage-proof technology at present is chemical grouting leakage-proof technology. As shown in fig. 2, the leakage prevention technology first plugs EPDM water-stop strips 6 at the seams, and then seals the seams with sealant 4. The EPDM water stop strip 6 and the sealant 4 have the function of forming a glue injection space which is sealed to one side in the tunnel in the joint. Then, a plurality of inclined holes 5 are drilled on the concrete 1, gel 7 which can be quickly solidified is injected into the joint in sections from bottom to top sequentially through the inclined holes 5 by using a glue injection machine, and finally the inclined holes 5 are plugged. Because the EPDM water stop strip 6, the coating seal 4 and the gel 7 have good elasticity and sealing performance, the scalability of the joint is ensured, and the sealing of the joint is realized. Therefore, the leakage prevention technology can better solve the leakage problem of the joint.
However, this leakage-proof technology has a problem in practice: the joint of the two liners is arched, the length of the joint is at least tens of meters, and a plurality of inclined holes are required to be drilled in a segmented mode during construction, so that labor and time are wasted, and the strength of concrete is influenced. In addition, when the inclined holes are drilled, concrete scraps can enter the glue injection space, so that not only is the filling of the gel 7 in the glue injection space affected, but also the tightness between the gel 7 and the concrete 1 is adversely affected.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses an expansion water stop strip with glue injection holes. The expansion water stop strip adopts the following technical scheme:
the expansion water stop strip with glue injecting holes includes one water stop strip body of elastic sealing material for blocking the leakage seam or joint, and several glue injecting holes in the water stop strip body to penetrate the water stop strip body for injecting gel from outside into the leakage seam or joint. After the technical scheme is implemented, the beneficial effect is that gel can be directly injected into the inside of the leak or the joint through the glue injection hole without punching an inclined hole on the concrete. Compared with the background art, the method has the advantages of time and labor saving, no influence on the strength of concrete, and meanwhile, adverse influence on the tightness of gel caused by the fact that concrete scraps enter a glue injection space is avoided.
According to the technical scheme, the cross section of the water stop strip body is round, rectangular, drum-shaped, groove-shaped or H-shaped, or any combination of the round, rectangular, drum-shaped, groove-shaped and H-shaped. The technical scheme expands the implementation form of the water stop strip body.
Further improve technical scheme, the inside of sealing up strip body is hollow structure. After implementing this technical scheme, the beneficial effect who produces is, to wider leak or seam, and the material is extravagant to the stagnant water strip body of entity structure, and the cost is higher. The inside of the water stop strip body is designed into a hollow structure, so that materials can be reduced, and the cost is reduced.
The technical scheme is further improved, and the cross section of the water stop strip body is in a circular tube shape, a square tube shape or a special-shaped tube shape. The technical scheme expands the implementation form of the water stop strip body.
Further improvement technical scheme, run through sealing up strip body hollow structure's injecting glue hole has two, and one is the great last injecting glue hole of cross-sectional area, and another is the less injecting glue hole of cross-sectional area, goes up the injecting glue hole and faces the outside of leak or seam, and the injecting glue hole is down towards the inside of leak or seam. After the technical scheme is implemented, the upper glue injection hole with larger cross-sectional area is actually an avoidance hole, the position of the lower glue injection hole is convenient to observe during construction, and the glue injection pipe is facilitated to be smoothly inserted into the lower glue injection hole.
Further improved technical scheme, the stagnant water strip body interval is equipped with a plurality of injecting glue mouths that are equipped with to the inside outstanding injecting glue mouth of leak or seam, the injecting glue hole is located in the injecting glue mouth. After the technical scheme is implemented, the protruding glue injection nozzle has the beneficial effects that the contact length of the glue injection pipe and the glue injection hole is prolonged, so that the sealing between the glue injection pipe and the glue injection hole is enhanced, and the gel can be prevented from seeping out to the outside of a leak or a seam through a gap between the glue injection hole and the glue injection pipe during glue injection.
According to the further improved technical scheme, the expansion water stop strip further comprises a plug, and the plug is used for plugging the glue injection hole. After the technical scheme is implemented, the beneficial effect is that before the gel is solidified, the plug can be used for replacing the glue injection pipe to plug the glue injection hole, and the gel is prevented from flowing out to the outside of a leak or a joint through the glue injection hole under the condition that the glue injection pipe is not occupied.
According to the technical scheme, when glue is injected, the glue injection pipe is inserted into the glue injection hole, and the inner diameter of the glue injection hole in a normal state is smaller than the outer diameter of the glue injection pipe. After the technical scheme is implemented, the water stop strip body is made of elastic sealing materials and has elasticity. The inner diameter of the glue injection hole in a normal state is smaller than the outer diameter of the glue injection pipe, when the glue injection pipe is inserted into the glue injection hole, the glue injection Kong Gujin can be used for injecting the glue, and the sealing performance between the glue injection pipe and the glue injection hole is improved.
Drawings
Fig. 1 shows a schematic diagram of a sealing structure of a conventional tunnel secondary lining seam.
Fig. 2 is a schematic diagram of a prior art chemical grouting leakage prevention technology during application.
Fig. 3 is a schematic view showing the structure of the present expansion bead in embodiment 1.
Fig. 4-6 show schematic views of the expansion water stop strip in the construction process.
Fig. 7-11 are schematic views showing various sectional shapes of the water stop strip body.
Fig. 12 to 13 are schematic structural views of the present expansion bead in embodiment 2.
In the figure: 1. concrete; 2. a water-stop plate; 3. groundwater; 4. sealing glue; 5. inclined holes; 6. EPDM water stop strips; 7. a gel; 8. expansion water stop strips; 81. a water stop strip body; 82. a glue injection hole; 83. a glue injection nozzle; 84. avoidance holes; 9. a rubber injection pipe; 10. and (5) plugging.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. It should be noted that, in the description of the present utility model, terms such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. It should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Example 1:
an expansion sealing strip with glue injection holes is shown in fig. 3, and comprises a sealing strip body 81 made of elastic sealing material and used for plugging a leakage seam or joint, wherein a plurality of glue injection holes 82 are formed in the sealing strip body 81 at intervals, and the glue injection holes 82 penetrate through the sealing strip body 81 and are used for injecting gel 7 from outside into the leakage seam or joint.
Specifically, in fig. 3, the cross-sectional shape of the water stop body 81 is a groove shape, a plurality of glue injection nozzles 83 with protrusions are arranged at intervals at the bottom of the groove, and the glue injection holes 82 are arranged in the glue injection nozzles 83 and penetrate through the water stop body 81 and the glue injection nozzles 83. It should be noted that the material of the water stop bar body 81 may be rubber, polyolefin, EPDM, PVC or other elastic sealing material.
Referring to fig. 4, the engineering leakage prevention commonly encountered in reality is divided into two types, namely a tunnel secondary lining joint as shown in fig. 4, the width of the joint is consistent, the trend is regular, and the expansion water stop strip 8 can be smoothly plugged into the joint; the other is a wall leakage, and the leakage is often generated by cracking the wall. The width of the leakage seam is different, the trend is irregular, and the expansion water stop strip 8 cannot be plugged in. Therefore, for the wall body leakage, a cutting machine is firstly used for grooving the leakage along the trend of the leakage before the leakage prevention construction, so that the width of the grooving is kept consistent.
With continued reference to fig. 4, an expansion bead 8 is inserted into the joint. The expansion water stop strip 8 has elasticity and can seal the joint, and a glue injection cavity which is sealed towards one side in the tunnel is formed in the joint. Since the expansion bead 8 itself has the injection hole 82, the injection tube 9 can be inserted into the joint through the injection hole 82 and the gel 7 can be injected into the joint during construction. The gel 7 is a glue solution capable of being quickly solidified and is also a core sealing material in the chemical grouting anti-leakage technology. The gel 7 is solidified after filling the injecting cavity and is adhered with the concrete 1 and the water stop plate 2 to block the groundwater. Compared with the background art, the method has the advantages that the inclined holes are not required to be drilled in the concrete 1, the gel 7 can be directly injected into the joint through the gel injection holes 82, time and labor are saved, the strength of the concrete 1 is not affected, and meanwhile adverse effects on the tightness of the gel 7 caused by the fact that fragments of the concrete 1 enter a gel injection space are avoided.
It is noted that the inside diameter of the injection hole 82 is slightly smaller than the outside diameter of the injection tube 9 in normal state. Because the expansion water stop strip 8 is made of elastic sealing materials and has elasticity, when the glue injection pipe 9 is inserted into the glue injection hole 82, the glue injection hole 82 can be used for hooping the glue injection pipe 9, and the sealing performance between the glue injection pipe 9 and the glue injection hole 82 is improved.
Referring to fig. 3 and 4, the provision of the injection nozzle 83 has the advanced significance that the injection pressure is high, the protruding injection nozzle 83 lengthens the contact length between the injection tube 9 and the injection hole 82, which helps to strengthen the seal between the injection tube 9 and the injection hole 82, and the gel 7 can be prevented from leaking to the outside of the leak or joint through the gap between the injection hole 82 and the injection tube 9 during injection.
Referring to fig. 5, the gel 7 may take a certain time to cure, at which time the plug 10 may be used to plug the injection hole 82. The improvement is that before the gel 7 is solidified, the plug 10 can be used for replacing the glue injection pipe 9 to plug the glue injection hole 82, and the gel 7 is prevented from flowing out of the joint through the glue injection hole 82 under the condition that the glue injection pipe 9 is not occupied.
Referring to fig. 6, after grouting is completed, the outside of the expansion water stop strip 8 is coated with the sealant 4, and the sealant 4 has the function of enhancing the sealing of the expansion water stop strip 8 and the glue injection hole 82; and secondly, the seam is blocked, so that the seam is smooth and beautiful.
In the present embodiment, the cross-sectional shape of the water stop bar body 81 is a groove shape.
It should be understood that, as an extension and extension of the present expansion bead 8, the cross-sectional shape of the bead body 81 may be circular as shown in fig. 7.
The cross-sectional shape of the water stop body 81 may be rectangular as shown in fig. 8.
The cross-sectional shape of the water stop bar body 81 may also be drum-shaped as shown in fig. 9.
The cross-sectional shape of the water stop body 81 may be a combination of a rectangular shape and a trapezoidal shape, as shown in fig. 10.
The cross-sectional shape of the water stop body 81 may be a combination of a rectangle and a semicircle, as shown in fig. 11.
Example 2:
unlike embodiment 1, in the present embodiment, the inside of the water stop strip body 81 is a hollow structure.
Referring to fig. 12, in fig. 12, the cross-sectional shape of the water stop body 81 is a hollow circular tube shape, and the glue injection hole 82 penetrates the circular tube. For wider leaks or joints, the water stop strip body 81 of a solid structure is relatively wasteful of material and is relatively costly. The water stop body 81 is designed to be hollow, so that materials and cost can be reduced. Likewise, the cross-sectional shape of the water stop body 81 may be a square tube shape or a special-shaped tube shape.
Referring to fig. 13, the water stop body 81 has a hollow square pipe shape in cross section, and the glue injection hole 82 penetrates the square pipe. The hole with the larger cross-sectional area is the avoidance hole 84, the hole with the smaller cross-sectional area is the glue injection hole 82, the avoidance hole 84 faces the outside of the joint, and the glue injection hole 82 faces the inside of the joint. During construction, the avoidance holes 84 with larger cross-sectional areas are convenient for observing the positions of the glue injection holes 82, and the glue injection pipes 9 can be smoothly inserted into the glue injection holes 82.
The parts not described in detail are prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (8)
1. An expansion sealing strip with glue injection holes is characterized in that: the sealing strip comprises a sealing strip body which is made of elastic sealing materials and used for plugging a leakage seam or a joint, wherein a plurality of glue injection holes are formed in the sealing strip body at intervals, penetrate through the sealing strip body and are used for injecting gel from the outside into the leakage seam or the joint.
2. The expansion water stop strip with glue injection holes as defined in claim 1, wherein: the cross section of the water stop strip body is round, rectangular, drum-shaped, groove-shaped and H-shaped, or is one of any combination of round, rectangular, drum-shaped, groove-shaped and H-shaped.
3. The expansion water stop strip with glue injection holes as defined in claim 1, wherein: the inside of the water stop strip body is of a hollow structure.
4. An expansion water stop strip with glue injection holes as defined in claim 3, wherein: the cross section of the water stop strip body is in a circular pipe shape, a square pipe shape and a special-shaped pipe shape.
5. An expansion water stop strip with glue injection holes as defined in claim 3, wherein: two glue injection holes penetrating through the hollow structure of the water stop strip body are arranged, one glue injection hole is an upper glue injection hole with a larger cross-sectional area, the other glue injection hole is a lower glue injection hole with a smaller cross-sectional area, the upper glue injection hole faces the outside of a leak or a joint, and the lower glue injection hole faces the inside of the leak or the joint.
6. An expansion water stop strip with glue injection holes as defined in any one of claims 1-5, wherein: the sealing strip body is provided with a plurality of glue injection nozzles protruding towards the inside of the leak or the joint at intervals, and the glue injection holes are arranged in the glue injection nozzles.
7. The expansion water stop strip with glue injection holes as defined in claim 1, wherein: the expansion water stop strip further comprises a plug, and the plug is used for plugging the glue injection hole.
8. The expansion water stop strip with glue injection holes as defined in claim 1, wherein: when injecting glue, insert the injecting glue pipe in the injecting glue hole, the injecting glue hole is smaller than the external diameter of the injecting glue pipe in the normal state inside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320780062.3U CN219840664U (en) | 2023-04-11 | 2023-04-11 | Expansion water stop strip with glue injection holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320780062.3U CN219840664U (en) | 2023-04-11 | 2023-04-11 | Expansion water stop strip with glue injection holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219840664U true CN219840664U (en) | 2023-10-17 |
Family
ID=88299111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320780062.3U Active CN219840664U (en) | 2023-04-11 | 2023-04-11 | Expansion water stop strip with glue injection holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219840664U (en) |
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2023
- 2023-04-11 CN CN202320780062.3U patent/CN219840664U/en active Active
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