CN214535100U - Blocking structure for buried pipe under dam - Google Patents
Blocking structure for buried pipe under dam Download PDFInfo
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- CN214535100U CN214535100U CN202120392804.6U CN202120392804U CN214535100U CN 214535100 U CN214535100 U CN 214535100U CN 202120392804 U CN202120392804 U CN 202120392804U CN 214535100 U CN214535100 U CN 214535100U
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Abstract
A blocking structure for an underground buried pipe of a dam comprises an upstream template, a downstream template, a drain pipe and a concrete conveying pipe; the upstream template and the downstream template are both round steel plates, and the upstream template and the downstream template are formed by splicing four steel plates; the upstream die plate and the downstream die plate are the same in shape and size; a concrete block is arranged between the upstream template and the downstream template; the drain pipe is made of seamless steel pipes and is fixedly arranged at the upstream template and the bottom of the lower template; a butterfly valve is arranged at the downstream end of the drain pipe; the concrete conveying pipe is fixedly arranged at the top of the upstream template, and a concrete control valve is arranged at the downstream end of the concrete conveying pipe. The plugging structure for the buried pipe under the dam can give consideration to the functions of the template and water retaining; the upstream module and the downstream template are divided into four structural combination designs, so that the pipeline plugging device is conveniently transported to a pipeline plugging position in a semicircular mode before construction.
Description
Technical Field
The utility model relates to a shutoff technical field under the dam, more specifically say, in particular to buried pipe block structure under dam.
Background
The existing buried pipe inlet gate under the king-quartz main dam is a tower type water inlet, and the height difference between the top of a vertical shaft in a gate chamber and the bottom of the vertical shaft, namely a gate maintenance platform, is 44 m. The bottom of the vertical shaft is provided with a two-layer platform, the upper layer is a gate maintenance platform, a square opening of 70cm multiplied by 70cm is arranged on the wall of the shaft close to the downstream of the platform, the opening is communicated with the lower layer platform, and the height difference between the two layers of platforms is about 2 m; the bottom plate of the lower platform is the pipe wall of the buried pipe under the inlet gate section dam, and a circular hole with the diameter of 60cm is formed in the platform and connected with the buried pipe.
At present, a working gate and a maintenance gate of a buried pipe under a main dam of an royal water reservoir are seriously aged and can not be completely closed, the water stop of the gate is invalid, the flow velocity of water flow permeating the pipe is more than or equal to 1m/s, and serious water leakage is caused; in addition, the water level of the royal water reservoir is kept above 64m for a long time, the water head at the inlet gate of the buried pipe under the dam is larger than 38m, and the water head pressure is extremely high. Therefore, the dam buried pipe needs to be changed from the original reinforcement engineering to permanent plugging. The inner diameter of the vertical shaft of the buried pipe inlet gate under the dam is 4.3m, and the available working surface is less than 3m2The inner diameter of the buried pipe is only 1.44m, the operation space is extremely narrow, and the plugging construction is not convenient. Therefore, in the plugging of the buried pipe under the dam, a plugging structure for the buried pipe under the dam which can give consideration to both the template and the water retaining function is needed.
SUMMERY OF THE UTILITY MODEL
Therefore, how to solve the problem that the available operation space of the existing underground pipe inlet gate under the reservoir dam is narrow and not beneficial to plugging construction becomes a problem to be solved urgently by technical personnel in the field.
In order to achieve the above object, the utility model provides a following technical scheme: a blocking structure for an underground buried pipe of a dam comprises an upstream template, a downstream template, a drain pipe and a concrete conveying pipe;
the upstream template and the downstream template are both round steel plates, and the upstream template and the downstream template are formed by splicing four steel plates; the upstream die plate and the downstream die plate are the same in shape and size; a concrete block is arranged between the upstream template and the downstream template;
the drain pipe is made of seamless steel pipes and is fixedly arranged at the upstream template and the bottom of the lower template; a butterfly valve is arranged at the downstream end of the drain pipe;
the concrete conveying pipe is fixedly arranged at the top of the upstream template, and a concrete control valve is arranged at the downstream end of the concrete conveying pipe.
Further, the upstream template comprises a first plate, a second plate, a third plate and a fourth plate which are sequentially arranged from bottom to top, the first plate, the second plate, the third plate and the fourth plate are formed by transversely dividing a circular steel plate, and the first plate and the second plate, the second plate and the third plate and the fourth plate are fixedly connected through bolts. The upstream module is divided into four structural combination designs, and is convenient to transport to a pipeline plugging position in a semicircular mode before construction.
Furthermore, the drain pipe penetrates through the middle part of the first plate, and the concrete conveying pipe penetrates through the middle part of the fourth plate.
Further, the bottom of the first plate is in an arc shape corresponding to the inner wall of the buried pipe under the dam, a first convex strip is integrally arranged at the top of the first plate, the whole top of the first plate is in a step shape, the first convex strip is positioned on the upstream side of the first plate, and a first screw rod is fixedly connected to the first convex strip;
the bottom of the second plate is in a one-step shape and is matched with the top of the first plate, and a first through hole matched with the first screw rod is formed in the bottom of the second plate; the top of the second plate is provided with a second raised line in a one-step shape; the second convex strip is positioned on the upstream side of the second plate, and a second screw is fixedly connected to the second convex strip;
the bottom of the third plate is matched with the top of the second plate, and a second through hole matched with the second screw rod is formed in the bottom of the third plate; a third raised line is arranged at the top of the third plate and is positioned on the upstream side of the third plate, and a third screw is fixedly connected to the third raised line;
the bottom of the fourth plate is matched with the top of the third plate, and a third through hole matched with the third screw is formed in the bottom of the fourth plate.
Further, the downstream sides of the second plate, the third plate and the fourth plate are fixedly provided with fixing rings, the downstream sides of the upstream template and the downstream template of the inner wall of the buried pipe under the dam are fixedly provided with hanging rings, and the hanging rings are connected with the fixing rings through binding ropes.
Further, in order to stabilize the structure, the number of the fixing rings of the second plate is two, the number of the fixing rings of the third plate is two, the number of the fixing rings of the fourth plate is two, and the number of the hanging rings is two.
Furthermore, the number of the first screw, the second screw and the third screw is several.
Further, the inner diameter of the drain pipe is 30cm, and the length of the drain pipe is 3 m.
Further, the upstream end of the drain pipe extends out of the upstream template by 30cm, and the downstream end of the drain pipe extends out of the downstream template by 50 cm.
Compared with the prior art, the beneficial effects of the utility model are that:
firstly, the dam buried pipe plugging structure can give consideration to the functions of a template and water retaining; in the gate goes out the eye that leaks under the dam, the temperature is lower, and this structure is provided with the drain pipe and has the drainage function, and the pipe diameter of drain pipe sets up to satisfying overflowing.
Secondly, the space of the pipeline for pipe burying under the dam is limited, the manual operation difficulty is high, and the operation in the pipeline needs to be reduced. And the pumping method is adopted for pouring the block to ensure the construction efficiency, the cofferdam needs to be welded at the later stage to be used as a block template, and a pouring pipe opening is reserved for butt joint with the concrete guide pipe.
And the upstream module and the downstream template are divided into four structural combination designs, so that the pipeline can be conveniently transported to a pipeline plugging position in a semicircular mode before construction.
And fourthly, in the process of installing the upstream template and the downstream template, the plate is prevented from collapsing by arranging the hanging ring, the fixing ring and the binding rope, and the injury to operators is avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall plan view of an embodiment of an under-dam buried pipe plugging structure;
FIG. 2 is a schematic overall perspective view of an embodiment of an under-dam pipe laying plugging structure;
FIG. 3 is a schematic view of an embodiment of an under-dam buried pipe plugging structure;
FIG. 4 is a schematic cross-sectional view of an upstream die plate in an embodiment;
FIG. 5 is a schematic plan view of an upstream die plate in an embodiment;
FIG. 6 is an exploded view of an upstream template in an embodiment.
Wherein, 1 is an upstream template, 11 is a first plate, 111 is a first convex strip, 112 is a first screw, 12 is a second plate, 121 is a first through hole, 122 is a second convex strip, 123 is a second screw, 13 is a third plate, 131 is a second through hole, 132 is a third convex strip, 133 is a third screw, 14 is a fourth plate, 141 is a third through hole, 2 is a downstream template, 3 is a drain pipe, 31 is a butterfly valve, 4 is a concrete delivery pipe, 41 is a concrete control valve, 5 is a buried pipe under a dam, 6 is a fixed ring, 7 is a hanging ring, and 8 is a binding rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The specific embodiment is as follows:
as shown in fig. 1-3, an under-dam pipe laying plugging structure comprises an upstream formwork 1, a downstream formwork 2, a drain pipe 3 and a concrete conveying pipe 4; the upstream template 1 and the downstream template 2 are both round steel plates, and the thickness of the round steel plates is 2 cm. The upstream template 1 and the downstream template 2 are formed by splicing four steel plates; the upstream template 1 and the downstream template 2 have the same shape and size, and the diameters of the upstream template and the downstream template are 2-5cm smaller than the inner diameter of the buried pipe 5 under the dam; a concrete block is arranged between the upstream template and the downstream template;
the drain pipe 3 is made of seamless steel pipes, and the drain pipe 3 is fixedly arranged at the bottoms of the upstream template 1 and the lower template 2; the downstream end of the water discharge pipe 3 is provided with a butterfly valve 31; the concrete conveying pipe 4 is fixedly arranged at the top of the upstream template 1, and a concrete control valve 41 is arranged at the downstream end of the concrete conveying pipe 4.
In this embodiment, the upstream formwork 1 includes a first plate 11, a second plate 12, a third plate 13, and a fourth plate 14, which are sequentially arranged from bottom to top, as shown in fig. 4 to 6, the first plate 11, the second plate 12, the third plate 13, and the fourth plate 14 are formed by transversely dividing a circular steel plate, and the first plate 11 and the second plate 12, the second plate 12 and the third plate 13, and the third plate 13 and the fourth plate 14 are fixedly connected by bolts. The upstream module is divided into four structural combination designs, and is convenient to transport to a pipeline plugging position in a semicircular mode before construction. The water discharge pipe 3 penetrates through the middle part of the first plate 11, and the concrete conveying pipe 4 penetrates through the middle part of the fourth plate 14.
Specifically, the bottom of the first plate 11 is in an arc shape corresponding to the inner wall of the buried pipe 5 under the dam, the top of the first plate is integrally provided with a first convex strip 111, the whole top is in a step shape, the first convex strip is positioned on the upstream side of the first plate, and the first convex strip 111 is fixedly connected with a first screw rod 112;
the bottom of the second plate 12 is in a step shape and is matched with the top of the first plate 11, and the bottom of the second plate is provided with a first through hole 121 matched with the first screw rod; the top of the second plate is provided with a second convex strip 122 in a one-step shape; the second convex strip 122 is positioned on the upstream side of the second plate, and a second screw 123 is fixedly connected to the second convex strip;
the bottom of the third plate block 13 is matched with the top of the second plate block, and the bottom of the third plate block is provided with a second through hole 131 matched with the second screw rod; a third convex strip 132 is arranged at the top of the third plate and is positioned at the upstream side of the third plate, and a third screw 133 is fixedly connected onto the third convex strip;
the bottom of the fourth plate 14 is matched with the top of the third plate, and the bottom of the fourth plate is provided with a third through hole 141 matched with the third screw.
In this embodiment, the fixing rings 6 are fixedly installed on the downstream sides of the second plate 12, the third plate 13 and the fourth plate 14, the hanging rings 7 are fixedly installed on the downstream sides of the upstream formwork and the downstream formwork of the inner wall of the buried pipe 5 under the dam, and the hanging rings 7 and the fixing rings 6 are connected through the tying ropes 8.
In order to stabilize the structure, the number of the fixing rings of the second plate is two, the number of the fixing rings of the third plate is two, the number of the fixing rings of the fourth plate is two, and the number of the hanging rings is two.
In this embodiment, the number of the first screws is 5, the number of the second screws is 6, and the number of the third screws is 4.
The dam buried pipe plugging structure in the embodiment adopts a steel double-circle connecting structure, and the circular templates adopt a quartering splicing mode and are in butt joint through bolts. The inner diameter of the buried pipe under the dam is 144cm, the diameters of the upstream template and the downstream template are 142cm and are slightly smaller than the size (144cm) of the buried pipe under the dam, and therefore the buried pipe under the dam is convenient to install. The water diversion device is used for diversion in the early stage and is transported to a pipeline plugging position in blocks in the early stage for convenient construction. The drain pipe is a seamless steel pipe m with the inner diameter of 30cm and the length of 3m, the upstream drain pipe is welded to the first plate of the upstream template at the position of 30cm, the downstream drain pipe is welded to the first plate of the downstream template at the position of 50cm, and a butterfly valve matched with the pipeline is installed at the position of 30 cm; and a fourth plate of the downstream template is reserved with a mounting position of the concrete conveying pipe, and a valve is mounted after the concrete conveying pipe is mounted to control concrete pouring.
This structure adopts the welding to assemble. According to the design size, after steel plates, steel pipes, butterfly valves and the like are transported to a construction site, manual argon arc welding is used for welding and assembling by site processing personnel.
In the plugging structure for the buried pipe under the dam in the embodiment, when the plugging structure is installed, the first plate is placed in the buried pipe under the dam, and the first plate can be stably placed after the first plate of the upstream template and the first plate of the downstream template are placed in the buried pipe under the dam due to the fixedly connected drain pipe. Then sequentially installing a second plate, a third plate and a fourth plate of the upstream template: placing the second plate on the upper part of the first plate, enabling the first through hole to penetrate through the first screw rod, enabling the top end of the first plate to be embedded with the bottom end of the second plate, and tightly locking the first screw rod by adopting a nut to fix the first plate and the second plate; then, sequentially installing a third plate and a fourth plate; and installing the upstream template and then installing the downstream template. And finally, pouring concrete between the upstream template and the downstream template through the concrete conveying pipe to form the concrete block.
In the operation process, in order to avoid the second plate from falling off between fastening, one or two hanging rings can be welded on the inner wall of the buried pipe under the dam in advance, binding ropes are bound on the hanging rings, and the other end of the elastic band is fixedly connected to the fixing ring on the downstream side of the second plate, so that the second plate cannot collapse obliquely towards the upstream side due to the arrangement of the first convex strip of the first plate; due to the arrangement of the binding rope, the second plate cannot collapse towards the downstream side, and usually, an operator is located on the downstream side, so that the situation that the operator is injured by a crashing object when the second plate is installed is avoided. After the second plate is installed, the binding rope is untied, the third plate is put on, and the binding rope is tied to the fixing ring of the third plate again. After the third plate is installed, the binding rope is opened, the fourth plate is put on, and the binding rope is tied to the fixing ring of the fourth plate again. So that either the upstream or downstream form is installed.
The buried pipe plugging structure under the dam in the embodiment has multiple functions. Cofferdams are arranged, so that the flow velocity is reduced, and the construction difficulty is reduced; installing a drainage pipeline to unload the template and the section of the blocking body; installing a butterfly valve and controlling the construction quality of the front section of the plug body of the template; and reserving a pumping concrete butt joint pipe orifice to ensure the pouring operation construction in the template.
In the plugging structure for the buried pipe under the dam in the embodiment, when concrete plugging construction is performed in the buried pipe under the dam, a pressure-bearing plug body is arranged at first and can bear the lateral pressure of 3-5 Mpa; the pipeline is ensured to be smooth, and the normal water passing can be met before the strength of the plug body is reached; the interior of the template needs to bear lateral pressure of concrete and pumped concrete; due to the limitation of the pipeline, the construction working surface is narrow, and the working time in the pipeline is shortened; the transportation distance is longer in the pipeline, and has the corner, and for reducing the transportation degree of difficulty, the template is not suitable oversize, and it is long when the welding operation in the pipeline is long to need less as far as possible, uses the mode of bolt butt joint to implement the template concatenation.
The plugging structure for the buried pipe under the dam can give consideration to the functions of the template and water retaining; the structure is convenient to disassemble and assemble. As the dam body needs to manually transport pipelines as long as one hundred or two hundred meters to a designated position and bends exist, the structure is convenient to disassemble and assemble. In the gate goes out the eye that leaks under the dam, the temperature is lower, and this structure is provided with the drain pipe and has the drainage function, and the pipe diameter of drain pipe sets up to satisfying overflowing. In the embodiment, the diameter of the pipeline of the buried pipe under the dam is only 144cm, the space is limited, the manual operation difficulty is high, and the operation in the pipeline needs to be reduced. And the pumping method is adopted for pouring the block to ensure the construction efficiency, the cofferdam needs to be welded at the later stage to be used as a block template, and a pouring pipe opening is reserved for butt joint with the concrete guide pipe. In order to avoid the casting construction of the upstream section of the block body, the concrete is lost, the casting quality is reduced, and therefore a drainage valve needs to be preset at the tail of the cofferdam to control the casting process. In order to ensure the quality of the plugging body, a filling grouting pipe is reserved at the top end of the template so as to carry out sealing construction on the part of the upper part of the plugging body which is leaked and underpoured.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a buried pipe block structure under dam which characterized in that: comprises an upstream template, a downstream template, a drain pipe and a concrete conveying pipe;
the upstream template and the downstream template are both round steel plates, and the upstream template and the downstream template are formed by splicing four steel plates; the upstream die plate and the downstream die plate are the same in shape and size; a concrete block is arranged between the upstream template and the downstream template;
the drain pipe is made of seamless steel pipes and is fixedly arranged at the upstream template and the bottom of the lower template; a butterfly valve is arranged at the downstream end of the drain pipe;
the concrete conveying pipe is fixedly arranged at the top of the upstream template, and a concrete control valve is arranged at the downstream end of the concrete conveying pipe.
2. The sub-dam buried pipe blocking structure according to claim 1, wherein: the upstream template comprises a first plate, a second plate, a third plate and a fourth plate which are sequentially arranged from bottom to top, the first plate, the second plate, the third plate and the fourth plate are formed by transversely dividing a circular steel plate, and the first plate and the second plate, the second plate and the third plate and the fourth plate are fixedly connected through bolts.
3. The sub-dam buried pipe blocking structure according to claim 2, wherein: the middle part of the first plate is penetrated with the drain pipe, and the middle part of the fourth plate is penetrated with the concrete conveying pipe.
4. The sub-dam buried pipe blocking structure according to claim 3, wherein: the bottom of the first plate is in an arc shape corresponding to the inner wall of the buried pipe under the dam, a first convex strip is integrally arranged at the top of the first plate and is positioned on the upstream side of the first plate, and a first screw rod is fixedly connected onto the first convex strip;
the bottom of the second plate is matched with the top of the first plate, and a first through hole matched with the first screw rod is formed in the bottom of the second plate; a second raised line is arranged at the top of the second plate; the second convex strip is positioned on the upstream side of the second plate, and a second screw is fixedly connected to the second convex strip;
the bottom of the third plate is matched with the top of the second plate, and a second through hole matched with the second screw rod is formed in the bottom of the third plate; a third raised line is arranged at the top of the third plate and is positioned on the upstream side of the third plate, and a third screw is fixedly connected to the third raised line;
the bottom of the fourth plate is matched with the top of the third plate, and a third through hole matched with the third screw is formed in the bottom of the fourth plate.
5. The sub-dam buried pipe blocking structure according to claim 4, wherein: the downstream sides of the second plate, the third plate and the fourth plate are fixedly provided with fixing rings, the downstream sides of the upstream template and the downstream template of the inner wall of the buried pipe under the dam are fixedly provided with hanging rings, and the hanging rings are connected with the fixing rings through binding ropes.
6. The sub-dam buried pipe blocking structure according to claim 5, wherein: the number of the fixing rings of the second plate is two, the number of the fixing rings of the third plate is two, the number of the fixing rings of the fourth plate is two, and the number of the hanging rings is two.
7. The sub-dam buried pipe blocking structure according to claim 6, wherein: the number of the first screw rods, the number of the second screw rods and the number of the third screw rods are all a plurality.
8. The sub-dam buried pipe blocking structure according to claim 1, wherein: the inner diameter of the drain pipe is 30cm, and the length of the drain pipe is 3 m.
9. The sub-dam buried pipe blocking structure according to claim 1, wherein: the upstream end of the drain pipe extends out of the upstream template by 30cm, and the downstream end of the drain pipe extends out of the downstream template by 50 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120392804.6U CN214535100U (en) | 2021-02-22 | 2021-02-22 | Blocking structure for buried pipe under dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120392804.6U CN214535100U (en) | 2021-02-22 | 2021-02-22 | Blocking structure for buried pipe under dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214535100U true CN214535100U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120392804.6U Active CN214535100U (en) | 2021-02-22 | 2021-02-22 | Blocking structure for buried pipe under dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214535100U (en) |
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2021
- 2021-02-22 CN CN202120392804.6U patent/CN214535100U/en active Active
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