CN211368801U - Tunnel engineering seam waterproof construction - Google Patents
Tunnel engineering seam waterproof construction Download PDFInfo
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- CN211368801U CN211368801U CN201921202777.0U CN201921202777U CN211368801U CN 211368801 U CN211368801 U CN 211368801U CN 201921202777 U CN201921202777 U CN 201921202777U CN 211368801 U CN211368801 U CN 211368801U
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Abstract
The utility model provides a tunnel engineering seam waterproof construction, waterproof construction includes: pipe burying grooves, grouting pipes and grouting nozzles; the buried pipe groove is arranged at a leakage position of the engineering seam, the width of the buried pipe groove takes the leakage seam of the leakage position as a central line, the depth of the buried pipe groove is not less than one half of the wall thickness of the tunnel, and an opening of the buried pipe groove faces the tunnel; the grouting pipe is fixed in the pipe embedding groove and filled with grouting material, wherein the grouting material is a mixture of one of polyurethane, epoxy resin, acrylate and non-cured rubber asphalt and a first additive; the grouting nozzle is connected to the pipe wall of the grouting pipe. The utility model provides a waterproof construction sets up the waterproof construction that is formed by burying tub groove, slip casting pipe, slip casting mouth through the seepage position at tunnel engineering seam, ensures that the interior slip casting material of joint is sufficient, improves the waterproof reliability at tunnel hoop construction joint, movement joint position.
Description
Technical Field
The invention relates to the field of waterproofing, in particular to a waterproof structure for a tunnel engineering seam.
Background
With the rapid construction of projects such as high-speed railways, subways, highways, urban comprehensive pipe galleries and the like in recent years, a large number of tunnel projects exist in the projects, and the problem of water leakage of tunnels in the operation process is concerned by all parties, because the water leakage of the tunnels is directly related to the safety, reliability, durability and the like of the tunnels in the operation process.
At present, the buried water stop belt in the tunnel is widely applied and has the capability of adapting to the expansion and contraction deformation of concrete in the form of elasticity and structure of rubber materials, thereby fastening and sealing to effectively prevent water leakage and water seepage of building components.
However, due to the failure phenomena such as the fracture of the water stop belt or the weak bonding caused by construction reasons, concrete shrinkage or environmental temperature difference, the tunnel water leakage is particularly prominent in the positions of annular construction joints, deformation joints and the like, and becomes the weak point of the whole tunnel for water prevention. And once the weak positions are leaked, the water gushing phenomenon is easy to occur, so that great hidden danger is formed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tunnel engineering seam waterproof construction to solve the relatively poor problem of waterproof reliability at hoop construction joint, movement joint position.
A waterproof structure for a tunnel engineering seam, the waterproof structure comprising: pipe burying grooves, grouting pipes and grouting nozzles;
the buried pipe groove is arranged at a leakage position of the engineering seam, the width of the buried pipe groove takes the leakage seam of the leakage position as a central line, the depth of the buried pipe groove is not less than one half of the wall thickness of the tunnel, and an opening of the buried pipe groove faces the tunnel;
the grouting pipe is fixed in the pipe embedding groove and filled with grouting material, wherein the grouting material is a mixture of one of polyurethane, epoxy resin, acrylate and non-cured rubber asphalt and a first additive;
the grouting nozzle is connected to the pipe wall of the grouting pipe.
Optionally, the grouting pipe is fixed along the central line direction of the pipe embedding groove through an auxiliary clamp, and the grouting pipe is tightly attached to the pipe embedding groove.
Optionally, the waterproof structure further comprises a drain valve, and the grouting nozzle comprises a first grouting nozzle and a second grouting nozzle;
the drain valve is connected with the grouting pipe at the part of the tunnel arch bottom;
the first grouting nozzle is connected with the part of the grouting pipe at the arch top of the tunnel, and the second grouting nozzle is connected with the part of the grouting pipe at the arch waist of the tunnel.
Optionally, the grouting nozzle comprises a first grouting nozzle and a third grouting nozzle;
the first grouting nozzle is connected with the part of the grouting pipe at the arch top of the tunnel, and the third grouting nozzle is connected with the part of the grouting pipe at the arch bottom of the tunnel.
Optionally, quick-setting cement is filled between the outer wall of the grouting pipe and the inner wall of the pipe burying groove, and the quick-setting cement is flush with the inner wall of the lining;
and the grouting material is in bonding contact with the quick-drying cement through the pores on the wall of the grouting pipe.
Optionally, the waterproof structure further comprises a waterproof reinforcing layer;
the waterproof reinforcing layer is made of a mixture of epoxy resin and a second additive;
the waterproof reinforcing layer is arranged at an opening of the pipe burying groove and covers the quick-drying cement.
Optionally, the waterproof structure further comprises a waterproof additional layer;
the waterproof additional layer is made of a composite waterproof layer formed by sequentially laminating a first waterproof coating layer, a polyester non-woven fabric and a second waterproof coating layer;
the waterproof additional layer is arranged on one side, close to the tunnel, of the waterproof reinforcing layer.
Optionally, the waterproof structure further comprises a waterproof final layer;
the waterproof final layer is made of a mixture of one of quick-setting rubber asphalt waterproof paint, spray polyurea and spray acrylate and a third additive;
the waterproof final layer is arranged on one side of the waterproof additional layer close to the tunnel.
To prior art, the utility model discloses possess following advantage:
the utility model provides a waterproof construction sets up the waterproof construction that is formed by burying tub groove, slip casting pipe, slip casting mouth through the seepage position at tunnel engineering seam, ensures that the interior slip casting material of joint is sufficient, improves the waterproof reliability at tunnel hoop construction joint, movement joint position.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of a non-inverted arch tunnel maintenance applied to a waterproof structure provided by an embodiment of the present invention;
fig. 2 is a schematic view of an inverted arch tunnel maintenance applied to a waterproof structure provided by an embodiment of the present invention;
fig. 3 is a schematic view of a waterproof structure of a tunnel engineering seam provided by an embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
It should be understood that the specific embodiments described herein are merely illustrative of the present invention, and are not intended to limit the present invention.
Referring to fig. 1, showing the utility model provides a waterproof construction uses have inverted arch tunnel maintenance schematic diagram, refer to fig. 2, show the utility model provides a waterproof construction uses does not have inverted arch tunnel maintenance schematic diagram, waterproof construction includes: lining 10, grouting pipe 11, grouting nozzle 12 and pipe burying groove 13;
the pipe embedding groove 13 is arranged at a leakage position of the engineering seam, the width of the pipe embedding groove 13 takes the leakage seam of the leakage position as a central line, the depth of the pipe embedding groove 13 is not less than one half of the wall thickness of the tunnel, and the opening of the pipe embedding groove 13 faces the tunnel;
the grouting pipe 11 is fixed in the pipe burying groove 13, and grouting material is filled in the grouting pipe 11, wherein the grouting material is a mixture of one of polyurethane, epoxy resin, acrylate and non-cured rubber asphalt and a first additive;
the grouting nozzle 12 is connected to the wall of the grouting pipe 11.
Specifically, as shown in fig. 1 and 2, the waterproof structure for a tunnel engineering seam includes: the construction method comprises the following steps of lining 10, a grouting pipe 11, a grouting nozzle 12 and a pipe burying groove 13, wherein the pipe burying groove 13 is formed in a leakage position of an engineering seam, and the width of the pipe burying groove 13 takes the leakage seam of the leakage position as a central line. For example, the width direction center of the pipe burying groove 13 is aligned with the center line of the leakage seam, the concrete material of the lining 10 is removed by extending at least 25mm along the two sides of the center line, and the pipe burying groove 13 with the width of at least 50mm is opened. It is easy to understand that the larger the width of the pipe burying groove 13 is, the more easily the space of the pipe burying groove 13 can fully cover the leakage position of the leakage seam. Considering that the predetermined water stop is often located at half of the wall thickness of the inside of the tunnel, the depth of the pipe burying groove 13 is not less than half of the wall thickness of the tunnel. The opening of the pipe embedding groove 13 faces the tunnel, and a space is reserved for fixing the grouting pipe 11 subsequently. The pipe burying groove 13 is internally provided with a grouting pipe 11 with the same length as the pipe burying groove 13, the diameter of the grouting pipe 11 is smaller than the width of the pipe burying groove 13, the pipe wall of the grouting pipe 11 is provided with a plurality of holes for penetrating grouting materials, the grouting pipe 11 can be a PE (Polyethylene) flower pipe or a blind pipe, the PE flower pipe is used as a flexible pressure-resistant pipe, the surface of the PE flower pipe is provided with holes, and the grouting materials can be smoothly penetrated; the blind pipe mainly takes synthetic fiber, plastic, synthetic rubber and the like as raw materials, has extremely high surface water seepage capability and internal water communication capability, and can smoothly permeate grouting materials. A plurality of grouting nozzles 12 are connected to different positions on the wall of the grouting pipe 11 so that the grouting material can fill the grouting pipe 11 through the grouting nozzles 12. The grouting material is a mixture of one of polyurethane, epoxy resin, acrylate and non-cured rubber asphalt and a first additive, wherein the first additive can be a curing agent or a catalyst and the like. The structure bonding force of the material of the grouting material is strong, and the material has deformability in the later period and can adapt to structure settlement. The polyurethane sealant has a plurality of excellent characteristics, good bonding performance, good elasticity and excellent resilience, can be used for dynamic joints and has moderate price; the epoxy resin as an anti-corrosion material has the characteristics of compactness, water resistance, good leakage resistance, high strength, strong adhesive force and the like, and is moderate in price; the acrylate has good water-absorbing expansion performance and low price; the non-cured rubber asphalt waterproof coating has excellent adhesive property. For example, for economic reasons, the slip may be a mixture of the acrylate and the first additive, and the predetermined pressure may be 1.5 MP.
Optionally, referring to fig. 1 and 2, the grouting pipe 11 is fixed along the center line direction of the pipe embedding groove 13 by an auxiliary clamp, and the grouting pipe 11 is tightly attached to the pipe embedding groove 13.
Specifically, as shown in fig. 1 and 2, in the process of burying the grout pipe 11 in the pipe burying groove 13, the grout pipe 11 is fixed by an auxiliary jig in the direction of the center line of the pipe burying groove 13. Can adopt the checkpost to fix temporarily, the checkpost sets up between burying 13 cell walls both sides of tub groove and slip casting 11 outer walls, ensures that slip casting 11 hugs closely and buries tub innermost and the perk in 13 inslots.
Optionally, referring to fig. 1 and 2, the waterproof structure further includes a drain valve 14, and the grouting nozzle 12 includes a first grouting nozzle 121 and a second grouting nozzle 122;
the drain valve 14 is connected with the grouting pipe 11 at the part of the tunnel arch bottom;
the first grouting nozzle 121 is connected to the grouting pipe 11 at a portion of the arch of the tunnel, and the second grouting nozzle 122 is connected to the grouting pipe 11 at a portion of the arch of the tunnel.
Specifically, as shown in fig. 1 and 2, in the case of a tunnel, the leakage to the circumferential construction joint or deformation joint is serious, and drainage is required. The grouting pipe 11 is provided with a first grouting nozzle 121 at the arch part of the tunnel, a grouting pump is connected to the first grouting nozzle 121, and a second grouting nozzle 122 which is temporarily blocked is arranged at the arch part of the tunnel of the grouting pipe 11. The grouting pipe 11 at the bottom or lower reentrant corner of the tunnel is provided with a drain valve 14, and the drain valve 14 is in a closed state. The drain valve 14 is exposed out of the pipe burying groove 13, so as to be convenient for later opening and closing. Firstly, the grouting pump injects grouting material into the grouting pipe 11 through the first grouting nozzle 121 according to a preset pressure; when grouting material overflows from the second grouting nozzle 122 at the closed arched waist, disconnecting the grouting pump from the first grouting nozzle 121, and closing the first grouting nozzle 121; secondly, the grouting pump is connected with the second grouting nozzle 122, the grouting pump injects grouting material into the grouting pipe 11 through the second grouting nozzle 122 according to preset pressure, and the drain valve 14 connected to the end part of the grouting pipe 11 is opened for a plurality of times at intervals, the mode that the drain valve 14 is adopted at the end part of the grouting pipe 11 is mainly because leaked open water flows out from the circumferential construction joints and deformation joints before grouting construction, and the drain valve 14 can smoothly discharge the open water. During grouting, the drain valve 14 can be closed to ensure grouting pressure, and the opening and closing of the drain valve 14 are noticed at any time in the process, so that the drainage of water stored in the pipe is ensured, and the filling of the grouting material in the seam is ensured. When the grout overflows from the drain valve 14, it is determined that the grout pipe 11 is filled with the grout.
Optionally, referring to fig. 1 and 2, the grouting nozzle 12 comprises a first grouting nozzle 121 and a third grouting nozzle;
the first grouting nozzle 121 is connected to a portion of the grouting pipe 11 at the arch top of the tunnel, and the third grouting nozzle is connected to a portion of the grouting pipe 11 at the arch bottom of the tunnel.
Specifically, as shown in fig. 1 and 2, drainage is not required for the tunnel circumferential construction joints and deformation joints. The grouting pipe 11 is provided with a first grouting nozzle 121 at the part of the arch top of the tunnel, a grouting pump is connected to the first grouting nozzle 121, a third grouting nozzle which is temporarily blocked is arranged at the part of the grouting pipe 11 at the arch bottom of the tunnel, and the third grouting nozzle is connected to the position of the drain valve 14 to replace the drain valve 14. The grouting pump injects grouting material into the grouting pipe 11 through the first grouting nozzle 121 according to preset pressure; when the grouting material overflows from the third grouting nozzle at the closed arch bottom, it is determined that the grouting pipe 11 is filled with the grouting material. For example, for economic reasons, the slip may be a mixture of the acrylate and the first additive, and the predetermined pressure may be 1.5 MP.
Optionally, referring to fig. 1 and 2, quick-setting cement 15 is filled between the outer wall of the grouting pipe 11 and the inner wall of the pipe burying groove 13, and the quick-setting cement 15 is flush with the inner wall of the lining 10;
the grouting material is in bonding contact with the quick setting cement 15 through the pores on the wall of the grouting pipe 11.
Specifically, as shown in fig. 1 and 2, quick setting cement 15 is filled between the outer wall of the grouting pipe 11 and the inner wall of the pipe burying groove 13 to seal the grouting pipe 11 in the pipe burying groove 13, and the quick setting cement 15 is flush with the inner wall of the lining 10 to ensure the flatness of the surface. The grouting material is in bonding contact with the quick-setting cement 15 through the pores on the wall of the grouting pipe 11.
Optionally, referring to fig. 3, the waterproof structure further includes a waterproof reinforcing layer 16;
the waterproof reinforcing layer 16 is made of a mixture of epoxy resin and a second additive;
the waterproof reinforcing layer 16 is arranged at the opening of the pipe burying groove 13, and the quick-setting cement 15 is covered by the waterproof reinforcing layer 16.
Specifically, as shown in fig. 3, after the repair is completed, a waterproof reinforcing layer 16 is provided on the side of the base surface adjacent to the tunnel. A waterproof reinforcing layer 16 is provided at the opening of the pipe burying groove 13, and the waterproof reinforcing layer 16 covers the quick setting cement 15. The material of the waterproof reinforcing layer 16 is a mixture of one of a permeable epoxy resin and a water-based epoxy resin and a second additive. The water-based epoxy resin is mainly characterized by excellent corrosion resistance; the permeable epoxy resin has excellent adhesion to various structures, and is particularly excellent in adhesion to concrete. Wherein the second additive is a curing agent or a catalyst. The permeable epoxy resin or the water-based epoxy resin has good flexibility, can permeate into the structural concrete and the quick-drying cement 15 to further reinforce and seal the concrete and the quick-drying cement 15, simultaneously enhances the bonding performance of a subsequent coating waterproof layer, and can also ensure the surface smoothness. Optionally, the range of the permeable epoxy resin coating is 500mm wide centered along the seam, and the recommended coating weight is 0.3-0.4kg per square meter.
Optionally, referring to fig. 3, the waterproof structure further comprises a waterproof additional layer 17;
the structure of the waterproof additional layer 17 is a composite waterproof layer formed by sequentially laminating a first waterproof coating layer, a polyester non-woven fabric and a second waterproof coating layer;
the waterproof additional layer 17 is disposed on one side of the waterproof reinforcing layer 16 close to the tunnel.
Specifically, as shown in fig. 3, after the waterproof reinforcing layer 16 is dried, a waterproof additional layer 17 is disposed on one side of the waterproof reinforcing layer 16 close to the tunnel, the waterproof additional layer 17 is a composite waterproof layer in which a first waterproof coating layer, a polyester non-woven fabric and a second waterproof coating layer are sequentially stacked, the painting range can be 300mm wide along the seam center, and the waterproof performance is further enhanced.
Optionally, with reference to fig. 3, the waterproof structure further comprises a waterproof final layer 18;
the waterproof final layer 18 is made of a mixture of one of spray quick-setting rubber asphalt waterproof paint, spray polyurea and spray acrylate and a third additive;
the waterproof final layer 18 is disposed on the side of the waterproof additional layer 17 close to the tunnel.
Specifically, as shown in fig. 3, a waterproof final layer 18 is disposed on one side of the waterproof additional layer 17 close to the tunnel, and the material of the waterproof final layer 18 is a mixture of one of spray rapid-hardening rubber asphalt waterproof paint, spray polyurea and spray acrylate and a third additive. The sprayed rapid-hardening rubber asphalt waterproof coating has good flexibility, high tensile strength and good heat resistance; the spray polyurea has better tensile strength, tearing strength and weather resistance; the spray acrylate has good water-absorbing expansion performance. In consideration of tensile strength, the quick-setting rubber asphalt waterproof coating can be sprayed, wherein the spraying range is 500mm wide in the middle of the seam, and the spraying thickness is 1.5mm-2.5 mm. Wherein, the third additive is a curing agent or a catalyst, and the waterproof final layer 18 completely covers the waterproof reinforcing layer 16 and the waterproof additional layer 17 to form a final integral waterproof structure, so as to further enhance the waterproof performance.
To sum up, the embodiment of the utility model provides a include following advantage: the waterproof structure formed by the pipe burying groove, the grouting pipe and the grouting nozzle is arranged at the leakage position of the tunnel engineering seam, so that the filling of grouting material in the seam is ensured. In addition, whether need the condition of drainage to distinguish through the tunnel, designed different slip casting structures for the selection of slip casting structure is more nimble, and further, through waterproof enhancement layer, waterproof additional layer, waterproof final layer formation composite waterproof layer, this composite waterproof layer adopts flexible material, and the seepage position is repaired through the mode of preventing row combination like this, just gentle and benefit, can strengthen tunnel hoop construction joint, the waterproof reliability at movement joint position.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a tunnel engineering seam waterproof construction, the engineering seam is hoop construction seam or movement joint, its characterized in that, waterproof construction includes: the pipe burying groove, the grouting pipe and the grouting nozzle;
the buried pipe groove is arranged at a leakage position of the engineering seam, the width of the buried pipe groove takes the leakage seam of the leakage position as a central line, the depth of the buried pipe groove is not less than one half of the wall thickness of the tunnel, and an opening of the buried pipe groove faces the tunnel;
the grouting pipe is fixed in the pipe embedding groove, and grouting material is filled in the grouting pipe;
the grouting nozzle is connected to the pipe wall of the grouting pipe.
2. The waterproof structure of a tunnel engineering seam according to claim 1,
and fixing the grouting pipe along the central line direction of the pipe burying groove through an auxiliary clamp, wherein the grouting pipe is tightly attached to the pipe burying groove.
3. The waterproof structure of a tunnel engineering seam according to claim 1,
the waterproof structure further comprises a drain valve, and the grouting nozzle comprises a first grouting nozzle and a second grouting nozzle;
the drain valve is connected with the grouting pipe at the part of the tunnel arch bottom;
the first grouting nozzle is connected with the part of the grouting pipe at the arch top of the tunnel, and the second grouting nozzle is connected with the part of the grouting pipe at the arch waist of the tunnel.
4. The waterproof structure of a tunnel engineering seam according to claim 1,
the grouting nozzles comprise a first grouting nozzle and a third grouting nozzle;
the first grouting nozzle is connected with the part of the grouting pipe at the arch top of the tunnel, and the third grouting nozzle is connected with the part of the grouting pipe at the arch bottom of the tunnel.
5. The waterproof structure of a tunnel engineering seam according to claim 1,
quick-drying cement is filled between the outer wall of the grouting pipe and the inner wall of the pipe burying groove, and the quick-drying cement is flush with the inner wall of the lining;
and the grouting material is in bonding contact with the quick-drying cement through the pores on the wall of the grouting pipe.
6. The waterproof structure of a tunneling seam according to claim 5,
the waterproof structure further comprises a waterproof reinforcing layer;
the waterproof reinforcing layer is arranged at an opening of the pipe burying groove and covers the quick-drying cement.
7. The waterproof structure of a tunneling seam according to claim 6,
the waterproof structure further comprises a waterproof additional layer;
the structure of the waterproof additional layer is a composite waterproof layer formed by sequentially laminating a first waterproof coating layer, a polyester non-woven fabric and a second waterproof coating layer;
the waterproof additional layer is arranged on one side, close to the tunnel, of the waterproof reinforcing layer.
8. The waterproof structure of a tunneling seam according to claim 7,
the waterproof structure further comprises a waterproof final layer;
the waterproof final layer is arranged on one side of the waterproof additional layer close to the tunnel.
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| CN201921202777.0U CN211368801U (en) | 2019-07-26 | 2019-07-26 | Tunnel engineering seam waterproof construction |
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| CN201921202777.0U CN211368801U (en) | 2019-07-26 | 2019-07-26 | Tunnel engineering seam waterproof construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095661A (en) * | 2020-09-11 | 2020-12-18 | 何峰 | Construction method of I-level waterproof underground composite wall with coating sandwich layer |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095661A (en) * | 2020-09-11 | 2020-12-18 | 何峰 | Construction method of I-level waterproof underground composite wall with coating sandwich layer |
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