CN219825380U - Seepage-proofing joint structure of seepage-proofing geomembrane and concrete seepage-proofing wall - Google Patents
Seepage-proofing joint structure of seepage-proofing geomembrane and concrete seepage-proofing wall Download PDFInfo
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- CN219825380U CN219825380U CN202320003223.8U CN202320003223U CN219825380U CN 219825380 U CN219825380 U CN 219825380U CN 202320003223 U CN202320003223 U CN 202320003223U CN 219825380 U CN219825380 U CN 219825380U
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- impermeable
- geomembrane
- concrete
- wall
- guide groove
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000004873 anchoring Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 9
- 230000002265 prevention Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 239000012466 permeate Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 102100040428 Chitobiosyldiphosphodolichol beta-mannosyltransferase Human genes 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses an impermeable joint structure of an impermeable geomembrane and a concrete impermeable wall in the technical field of water conservancy and hydropower engineering, which comprises the concrete impermeable wall and a cushion layer positioned on the downstream side of the concrete impermeable wall, wherein the impermeable geomembrane is paved on the slope surface of the cushion layer, a section of straight section is arranged between the slope bottom of the cushion layer and the top of the concrete impermeable wall, a water guide groove is arranged on the straight section, the length direction of the water guide groove is consistent with the extending direction of the concrete impermeable wall, and the two ends of the water guide groove exceed the two sides of the impermeable geomembrane. According to the utility model, the water guide grooves are arranged on the slope surface of the cushion layer, so that water flowing down on the slope surface can be guided to the two sides of the impermeable geomembrane to be discharged, a large amount of water flow is prevented from accumulating at the joint of the impermeable geomembrane and the concrete impermeable wall to be discharged, the possibility that accumulated water permeates from the joint of the impermeable geomembrane and the concrete impermeable wall is reduced, and finally the aim of improving the impermeable effect is achieved.
Description
Technical Field
The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to an anti-seepage joint structure of an anti-seepage geomembrane and a concrete anti-seepage wall.
Background
In projects such as river dikes, reservoirs, diversion tunnels, highways, railways, airports, underground, underwater and the like, a seepage-proofing wall is often adopted to block water flow and play a role in seepage prevention. In order to ensure the stability of the diaphragm wall, a cushion layer is generally filled at the downstream side of the diaphragm wall to support the diaphragm wall. The slope surface at the top of the cushion layer is also required to be subjected to seepage prevention treatment, so that erosion of the cushion layer caused by rainwater and the like is avoided, and the stability of the seepage prevention wall is influenced. At present, the pad layer is mainly protected by paving the geomembrane impermeable panel on the slope surface of the pad layer, the upstream end of the geomembrane impermeable panel is generally directly fixed at the top of the impermeable wall, and in the long-term rain washing process, the rain flowing down from the slope surface of the pad layer often permeates from the joint of the geomembrane impermeable panel and the impermeable wall, so that the pad layer is corroded. There is a need for improvements to existing geomembrane impermeable panels to improve the barrier effect.
Disclosure of Invention
In order to overcome the defects that the joint of the prior geomembrane impermeable panel and the concrete impermeable wall is easy to permeate water and the like, the utility model aims to solve the technical problems that: an impermeable joint structure of an impermeable geomembrane and a concrete impermeable wall is provided.
The technical scheme adopted for solving the technical problems is as follows:
the impermeable joint structure of the impermeable geomembrane and the concrete impermeable wall comprises the concrete impermeable wall and a cushion layer positioned on the downstream side of the concrete impermeable wall, wherein the impermeable geomembrane is paved on the slope surface of the cushion layer, a section of straight section is arranged between the slope bottom of the cushion layer and the top of the concrete impermeable wall, a water guide groove is arranged on the straight section, the length direction of the water guide groove is consistent with the extending direction of the concrete impermeable wall, and the two ends of the water guide groove exceed the two sides of the impermeable geomembrane.
Further, the cross section of the water guide groove is L-shaped, and the opening direction of the water guide groove faces to one side of the slope top of the cushion layer.
Further, the water guide groove is arranged obliquely along the length direction of the water guide groove.
Further, the bottom of guiding gutter is equipped with first rubber pad, the guiding gutter is fixed on the domatic through the first anchor assembly that sets up along its length direction interval, makes first rubber pad compressed tightly sealed between guiding gutter bottom and prevention of seepage geomembrane.
Further, the first anchoring member comprises a plurality of first threaded rods which are arranged on the cushion layer at intervals, a plurality of through holes for the first threaded rods to pass through are formed in the bottom of the water guide groove, and the water guide groove is fixedly connected with the first threaded rods through nut gaskets and is pressed on the slope surface of the cushion layer.
Further, an internal thread pipe is arranged in the through hole of the water guide groove in a rotating mode, and the water guide groove is fixed on the first threaded rod through the internal thread pipe.
Further, the impermeable geomembrane is divided into an upper layer and a lower layer at the position close to the concrete impermeable wall, the upstream ends of the upper layer and the lower layer of impermeable geomembrane are respectively fixed at the top and the downstream side of the concrete impermeable wall, the downstream ends are connected together, the impermeable geomembrane of the lower layer is sunken downwards, and fine water-absorbing fillers are filled between the upper layer and the lower layer of impermeable geomembrane.
Further, the upstream ends of the upper impermeable geomembrane and the lower impermeable geomembrane are fixed on the concrete impermeable wall through a plurality of second anchoring parts which are arranged at intervals.
Further, the second anchoring piece comprises a clamping plate, a second rubber pad and a second threaded rod, wherein the second rubber pad is positioned on the bottom surface of the clamping plate, the second threaded rod is arranged on the concrete impermeable wall, and the clamping plate and the second rubber pad are connected to the second threaded rod in a penetrating mode and are fixed on the concrete impermeable wall through nut gaskets in a pressing mode.
Further, the water guide groove is fixed at the top of the fine water-absorbing filler.
The beneficial effects of the utility model are as follows: through set up the guiding gutter on the domatic of bed course, can guide the both sides discharge of prevention of seepage geomembrane with the downflow water on the domatic to avoid a large amount of water flows to accumulate and carry out the drainage in prevention of seepage geomembrane and concrete cut-off wall's joint department, just also reduced ponding from prevention of seepage geomembrane and concrete cut-off wall's joint department infiltration's possibility, finally reached the purpose that improves the prevention of seepage effect.
Drawings
Fig. 1 is a front view of the structure of the present utility model.
Fig. 2 is a top view of the structure of the present utility model.
FIG. 3 is a schematic view of the installation structure of the water guide tank of the present utility model.
The figures show that the concrete wall is marked with 1-concrete impermeable wall, 2-cushion layer, 3-impermeable geomembrane, 4-water guide groove, 5-fine water absorbing filler, 21-straight section, 31-second anchoring piece, 32-clamping plate, 33-second rubber pad, 34-second threaded rod, 41-first rubber pad, 42-first anchoring piece, 43-first threaded rod, 44-through hole, 45-internal threaded pipe, 46-annular groove and 47-convex ring.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, the impermeable joint structure of the impermeable geomembrane and the concrete impermeable wall comprises the concrete impermeable wall 1 and a cushion layer 2 positioned on the downstream side of the concrete impermeable wall 1, wherein an impermeable geomembrane 3 is paved on the slope surface of the cushion layer 2, a section of straight section 21 is arranged between the slope bottom of the cushion layer 2 and the top of the concrete impermeable wall 1, a water guide groove 4 is arranged on the straight section 21, the length direction of the water guide groove 4 is consistent with the extending direction of the concrete impermeable wall 1, and the two ends of the water guide groove 4 exceed the two sides of the impermeable geomembrane 3.
The existing protection structure leads to that all water flowing down from the slope of the cushion layer is accumulated at the joint of the impermeable geomembrane 3 and the concrete impermeable wall 1 for drainage, and excessive accumulated water easily leads to water infiltration from the joint, so that the impermeable effect of the impermeable geomembrane 3 is reduced. According to the utility model, the water guide grooves 4 are arranged on the slope of the cushion layer 2, so that water flowing down on the slope can be guided to two sides of the impermeable geomembrane 3 to be discharged, a large amount of water is prevented from accumulating at the joint of the impermeable geomembrane 3 and the concrete impermeable wall 1, the possibility that accumulated water permeates from the joint of the impermeable geomembrane 3 and the concrete impermeable wall 1 is reduced, and finally the aim of improving the impermeable effect is achieved.
In order to facilitate the water flow entering the water guiding groove 4, the water guiding groove 4 can be provided with an L-shaped cross section, and the opening direction of the water guiding groove is towards one side of the slope top of the cushion layer 2. Thus, water flowing down the slope surface can easily enter the water guide groove 4. Meanwhile, in order to avoid overflow or splashing caused by overlarge water flow impact, a straight section 21 is preferably arranged between the slope bottom of the cushion layer 2 and the top of the concrete impervious wall 1, and then the water guide groove 4 is arranged on the straight section 21, so that the impact of water flow on the water guide groove 4 can be reduced.
Further, in order to enable the water flow to be rapidly discharged from the water guide groove 4, it is preferable that the water guide groove 4 is inclined along the length direction thereof. The water guide groove 4 can adopt an arrangement mode that one end is high and the other end is propped against, or the middle is high and the two ends are low.
Because the slope surface of the cushion layer 2 cannot be quite smooth, water flows can flow through the gap between the water guide groove 4 and the slope surface, so that in order to improve the water retaining effect, a first rubber pad 41 is arranged at the bottom of the water guide groove 4, and the water guide groove 4 is fixed on the slope surface through first anchoring pieces 42 arranged at intervals along the length direction of the water guide groove, so that the first rubber pad 41 is pressed and sealed between the bottom of the water guide groove 4 and the impermeable geomembrane 3. The first rubber pad 41 can play a sealing role between the water guide groove 4 and the impermeable geomembrane 3, so that the water retaining effect of the water guide groove 4 is improved.
Specifically, the first anchoring member 42 includes a plurality of first threaded rods 43 disposed on the cushion layer 2 at intervals, a plurality of through holes 44 for the first threaded rods 43 to pass through are provided at the bottom of the water guiding groove 4, and the water guiding groove 4 is fixedly connected with the first threaded rods 43 through nut gaskets and is pressed on the slope of the cushion layer 2. The fastening effect can be achieved through the threaded connection, so that the first rubber pad 41 can be pressed on the slope of the cushion layer 2.
Further, an internally threaded pipe 45 is rotatably provided in the through hole 44 of the water guiding groove 4, and the water guiding groove 4 is fixed to the first threaded rod 43 by the internally threaded pipe 45. The internal thread tube 45 can adopt a structure form of plastic wrapped iron core, and the service life can be prolonged. The specific connection mode between the internal thread pipe 45 and the through hole 44 can be that an annular groove 46 is started on the inner wall of the through hole 44, and then a convex ring 47 which can be clamped in the annular groove 46 to rotate is arranged on the outer peripheral wall of the internal thread pipe 45. To prevent rainwater from penetrating into the cushion layer along the first threaded rod 43, a layer of sealant may be applied to the inner threaded tube 45.
The water guide tank 4 can only reduce water seepage by reducing ponding, but no way is provided to completely avoid water seepage from the joint of the impermeable geomembrane 3 and the concrete impermeable wall 1, so the further scheme is that the impermeable geomembrane 3 is divided into an upper layer and a lower layer at the position close to the concrete impermeable wall 1, the upstream ends of the upper layer and the lower layer of impermeable geomembrane 3 are respectively fixed at the top and the downstream side of the concrete impermeable wall 1, the downstream ends are connected together, the impermeable geomembrane 3 of the lower layer is sunken downwards, and fine water absorbing filler 5 is filled between the upper layer and the lower layer of impermeable geomembrane 3. The function of the fine water-absorbing filler 5 is that after the water is permeated into the joint of the impermeable geomembrane 3 and the concrete impermeable wall 1, the fine water-absorbing filler 5 can absorb the permeated water and timely fill cracks or defect parts under the action of self weight and the action of waterpower, so that the self-healing effect of the structure is achieved, and the waterproof effect of the impermeable geomembrane 3 is ensured.
For the connection mode of the impermeable geomembrane 3 and the concrete impermeable wall 1, similar to the water guide groove 4, the upstream ends of the upper impermeable geomembrane 3 and the lower impermeable geomembrane 3 are fixed on the concrete impermeable wall 1 through a plurality of second anchoring parts 31 which are arranged at intervals.
Preferably, the second anchoring member 31 comprises a clamping plate 32, a second rubber pad 33 positioned on the bottom surface of the clamping plate 32, and a second threaded rod 34 arranged on the concrete diaphragm wall 1, wherein the clamping plate 32 and the second rubber pad 33 are connected to the second threaded rod 34 in a penetrating manner and are pressed and fastened on the concrete diaphragm wall 1 through nut gaskets. The fastening effect can be achieved by means of the threaded connection, ensuring that the second rubber pad 33 can be pressed against the slope of the mat 1.
In order to avoid water penetration from the first threaded rod 43, the water guide tank 4 may be fixed on top of the fine water absorbing packing 5. Thus, even if part of the water is just permeated into the water, the fine water-absorbing filler 5 can timely seal the water-permeating part, thereby improving the seepage-proofing effect.
Claims (10)
1. The utility model provides an impermeable geomembrane and impermeable joint structure of concrete wall, includes concrete wall (1) and is located bed course (2) of concrete wall (1) low reaches side, the domatic upper berth of bed course (2) has laid impermeable geomembrane (3), characterized by: a section of straight section (21) is arranged between the slope bottom of the cushion layer (2) and the top of the concrete impermeable wall (1), a water guide groove (4) is arranged on the straight section (21), the length direction of the water guide groove (4) is consistent with the extending direction of the concrete impermeable wall (1), and the two ends of the water guide groove (4) exceed the two sides of the impermeable geomembrane (3).
2. The impermeable geomembrane and concrete wall impermeable joint structure of claim 1, wherein: the section of the water guide groove (4) is L-shaped, and the opening direction of the water guide groove faces to one side of the slope top of the cushion layer (2).
3. The impermeable geomembrane and concrete wall impermeable joint structure of claim 1, wherein: the water guide groove (4) is obliquely arranged along the length direction of the water guide groove.
4. The impermeable geomembrane and concrete wall impermeable joint structure of claim 1, wherein: the bottom of guiding gutter (4) is equipped with first rubber pad (41), guiding gutter (4) are fixed on the domatic through first anchor assembly (42) that set up along its length direction interval, make first rubber pad (41) compressed tightly sealed between guiding gutter (4) bottom and prevention of seepage geomembrane (3).
5. The impermeable geomembrane and concrete wall impermeable joint structure of claim 4, wherein: the first anchoring piece (42) comprises a plurality of first threaded rods (43) which are arranged on the cushion layer (2) at intervals, a plurality of through holes (44) for the first threaded rods (43) to pass through are formed in the bottom of the water guide groove (4), and the water guide groove (4) is fixedly connected with the first threaded rods (43) through nut gaskets and is pressed on the slope of the cushion layer (2).
6. The impermeable geomembrane and concrete wall impermeable joint structure of claim 5, wherein: the through hole (44) of the water guide groove (4) is rotatably provided with an internal thread pipe (45), and the water guide groove (4) is fixed on the first threaded rod (43) through the internal thread pipe (45).
7. The impermeable geomembrane and concrete wall impermeable joint structure of any one of claims 1-6, characterized by: the anti-seepage geomembrane (3) is divided into an upper layer and a lower layer at a position close to the concrete anti-seepage wall (1), the upstream ends of the upper layer and the lower layer anti-seepage geomembrane (3) are respectively fixed at the top and the downstream side of the concrete anti-seepage wall (1), the downstream ends of the upper layer and the lower layer of anti-seepage geomembrane (3) are connected together, the lower layer of anti-seepage geomembrane (3) is sunken downwards, and fine water-absorbing fillers (5) are filled between the upper layer and the lower layer of anti-seepage geomembrane (3).
8. The impermeable geomembrane and concrete wall impermeable joint structure of claim 7, wherein: the upstream ends of the upper impermeable geomembrane and the lower impermeable geomembrane (3) are fixed on the concrete impermeable wall (1) through a plurality of second anchoring parts (31) which are arranged at intervals.
9. The impermeable geomembrane and concrete wall impermeable joint structure of claim 8, wherein: the second anchoring piece (31) comprises a clamping plate (32), a second rubber pad (33) positioned on the bottom surface of the clamping plate (32) and a second threaded rod (34) arranged on the concrete impervious wall (1), wherein the clamping plate (32) and the second rubber pad (33) are connected to the second threaded rod (34) in a penetrating mode and are fixed on the concrete impervious wall (1) through nut gaskets in a pressing mode.
10. The impermeable geomembrane and concrete wall impermeable joint structure of claim 7, wherein: the water guide groove (4) is fixed at the top of the fine water-absorbing filler (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003223.8U CN219825380U (en) | 2023-01-03 | 2023-01-03 | Seepage-proofing joint structure of seepage-proofing geomembrane and concrete seepage-proofing wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003223.8U CN219825380U (en) | 2023-01-03 | 2023-01-03 | Seepage-proofing joint structure of seepage-proofing geomembrane and concrete seepage-proofing wall |
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| Publication Number | Publication Date |
|---|---|
| CN219825380U true CN219825380U (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320003223.8U Active CN219825380U (en) | 2023-01-03 | 2023-01-03 | Seepage-proofing joint structure of seepage-proofing geomembrane and concrete seepage-proofing wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219825380U (en) |
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2023
- 2023-01-03 CN CN202320003223.8U patent/CN219825380U/en active Active
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