CN210975737U - Reservoir dam body culvert pipe transformation structure - Google Patents
Reservoir dam body culvert pipe transformation structure Download PDFInfo
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- CN210975737U CN210975737U CN201921043183.XU CN201921043183U CN210975737U CN 210975737 U CN210975737 U CN 210975737U CN 201921043183 U CN201921043183 U CN 201921043183U CN 210975737 U CN210975737 U CN 210975737U
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Abstract
The utility model discloses a belong to hydraulic structure field, specifically a structure is reformed transform to reservoir dam body culvert pipe. The utility model provides a structure is reformed transform to reservoir dam body culvert pipe, includes: an inlet section provided with a water inlet; the pipe body section comprises a pipe fitting positioned in the mountain rock cavern, and backfill grouting is arranged between the pipe fitting and the mountain rock cavern; and the outlet section is provided with a gate valve well. The pipe body section is arranged in the mountain body and is arranged separately from the dam, so that the safety of the dam body is not influenced, and the safety is high; the pipe body section of the utility model adopts the PE pipe, the tensile strength is good, and the comprehensive cost is low; the utility model discloses set up maintenance valve, work valve at the export section, the import section need not to set up maintenance gate and headstock gear room, and the engineering takes up an area of fewly, operation management is convenient, saves the engineering investment.
Description
Technical Field
The utility model discloses a belong to hydraulic structure field, specifically a structure is reformed transform to reservoir dam body culvert pipe.
Background
The water discharge facilities of small and medium-sized reservoirs in China generally adopt the structural form of dam body culvert pipes under the limitation of factors such as economic conditions, technical level and the like. The culvert pipes of the dam body are inconvenient to operate and manage, difficult to inspect and maintain and have potential safety hazards, and once the culvert pipes of the dam body are out of service, the safety of the dam is threatened. At present, for the culvert pipe of the dam body with problems, the common reconstruction scheme is mainly to adopt a mode of digging the dam body for reconstruction or newly building a tunnel for reconstruction. The scheme of excavating the dam body and reconstructing the culvert pipe is a method of excavating the dam body at the position where the original culvert pipe penetrates the dam body, dismantling the culvert pipe of the original dam body, reconstructing a new culvert pipe, and then re-filling and rolling the excavated position of the dam body to recover the section of the original dam body. The excavation of the dam body and reconstruction of culvert pipes damages the structure of the original dam body, the engineering quantity is large, and the combination quality of the combination part of the newly filled dam body and the original dam body is difficult to ensure; meanwhile, the dam body at the contact part of the culvert pipe and the dam body is difficult to compact, and potential safety hazards are easy to remain. The new tunnel construction scheme is a method for plugging the culvert pipe of the original dam body and newly constructing a diversion tunnel on the bank side of the reservoir outside the dam body. However, the tunnel diameter of the newly built tunnel is generally greatly limited by construction, so that the construction period and the investment are increased; the tunnel adopts blasting excavation construction, and the explosive material is examined and approved difficultly, the safety risk is high, the environmental impact is big, generally difficult to implement.
SUMMERY OF THE UTILITY MODEL
High, the environmental impact is big, the construction cycle is long, reform transform the high scheduling problem of expense to the safe risk that current dam body culvert pipe transformation technique exists, the utility model provides a structure is reformed transform to reservoir dam body culvert pipe.
The utility model aims at providing a reservoir dam body culvert pipe reforms transform structure, include:
an inlet section provided with a water inlet;
the pipe body section comprises a pipe fitting positioned in the mountain rock cavern, and backfill grouting is arranged between the pipe fitting and the mountain rock cavern;
and the outlet section is provided with a gate valve well.
Furthermore, the inlet section is also provided with a trash rack and an inlet anchor block.
Further, the pipe is preferably a PE pipe.
Further, the outlet section is also provided with an outlet ballast.
Furthermore, a flowmeter, an overhaul valve and a working valve are sequentially arranged in the sluice valve well; and the gate valve well is sequentially connected with a stilling pool and a water outlet channel.
The utility model discloses can solve the safe risk that current culvert pipe transformation technique exists high, environmental impact is big, the construction cycle is long, reform transform the high scheduling problem of expense, its useful part lies in:
one of them, the utility model discloses set up the pipe shaft section in the massif, separately arrange with the dam, do not influence dam body safety, the security is high. The mountain rock cavern is constructed by adopting a non-excavation horizontal directional drilling technology, blasting excavation is not needed, the safety risk is low, the construction speed is high, and the environmental influence is small.
And secondly, the utility model discloses body section tubular product adopts the PE pipe, and PE pipe bearing capacity is strong, the pipe wall roughness is little, the welding transportation is convenient, tensile strength is good, the combined cost is low, and tubular product life can reach 50 years.
Thirdly, the utility model discloses set up maintenance valve, work valve at the export section, the import section need not to set up and overhauls gate and headstock gear room, and the engineering takes up an area of less, operation management is convenient, saves the engineering investment.
Drawings
Fig. 1 is a longitudinal section schematic diagram of a reconstructed structure of a culvert pipe of a dam body.
Fig. 2 is a cross-sectional view of a shaft section.
FIG. 3 is a schematic view of the arrangement of backfill grouting at the inlet of a pipe body section.
FIG. 4 is a schematic view of a section of pipe being backfilled at the outlet of the section of pipe.
In the figure: 1-inlet anchor blocks; 2-a water inlet; 3-trash rack; 4-inlet plug; 5-outlet plug; 6-mountain body; 7-cavern body; 8-a pipe fitting; 9-backfilling and grouting; 10-outlet ballast block; 11-a flow meter; 12-a service valve; 13-a working valve; 14-a gate valve well; 15-stilling pool; 16-water outlet channel; 17-an exhaust pipe; and 18-slurry conveying pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the culvert pipe reconstruction structure for the dam body of the reservoir consists of an inlet section, a pipe body section and an outlet section, wherein the inlet section is provided with a water inlet 2, a trash rack 3 and an inlet anchor block 1; the pipe body section comprises a pipe fitting 8 positioned in the mountain cave 7, and backfill grouting 9 is arranged between the pipe fitting 8 and the mountain cave 7; the outlet section is provided with an outlet anchor block 10 and a gate valve well 14; and a flow meter 11, a maintenance valve 12 and a working valve 13 are sequentially arranged in the gate valve well 14. The gate valve well 14 is connected with a stilling pool 15 and a water outlet channel 16 in sequence.
As shown in fig. 1 to 4, a construction method of a reservoir dam culvert pipe transformation structure mainly comprises the following steps:
(1) emptying the reservoir through the culvert pipe of the original reservoir dam body, building a cofferdam, and leveling a construction site of a newly built water discharge pipe inlet and outlet.
(2) And (3) performing non-excavation directional drilling construction on the mountain 6 according to the designed axis, reaming step by step after drilling the guide hole, cleaning the hole to form a mountain cave 7, and pulling the PE pipe fitting 8 back in the mountain cave 7.
(3) And (3) carrying out a water pressing test after the PE pipe fitting 8 is installed, wherein the pressure of the water pressing test is 0.6MPa, the duration is 24h, and the sealing performance of the PE pipe fitting 8 joint is tested.
(4) And an inlet plug 4 is poured at the inlet of the pipe body section, an exhaust pipe 17 is embedded, an outlet plug 5 is poured at the outlet, and a slurry conveying pipe 18 is embedded. And backfilling and grouting 9 is carried out after the inlet plug 4 and the outlet plug 5 are poured for 2 days. And when the backfill grouting 9 is constructed, keeping the water pressing state of the PE pipe fitting 8. When the backfill grouting 9 is constructed, cement mortar is injected into the grout conveying pipe 18 from the outlet of the pipe body section, the overflow state of the exhaust pipe 17 at the inlet of the pipe body section is observed, the exhaust pipe 17 is blocked after the cement mortar overflows from the exhaust pipe 17 for 5min, the operation is stopped when the grouting pressure reaches 0.4MPa, the re-grouting is carried out after 3h, and the grout conveying pipe 18 is blocked after the re-grouting is finished.
(5) After the backfilling and grouting 9 is finished, pouring an inlet anchor block 1, and installing a trash rack 3; pouring an outlet anchor block 10, sequentially installing a flowmeter 11, an overhaul valve 12 and a working valve 13, pouring an outlet gate valve well 14 and a stilling basin 15, and well connecting the stilling basin 15 with an existing water outlet channel 16.
(6) And plugging the culvert pipe of the original dam body after the newly-built water drain pipe normally operates.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (5)
1. The utility model provides a structure is reformed transform to reservoir dam body culvert pipe which characterized in that includes:
an inlet section provided with a water inlet (2);
the pipe body section comprises a pipe fitting (8) positioned in the mountain cave (7) and backfill grouting (9) positioned between the pipe fitting (8) and the mountain cave (7);
the outlet section is provided with a gate valve well (14).
2. The improved structure of culvert pipes of reservoir dam body of claim 1, wherein: the inlet section is also provided with a trash rack (3) and an inlet anchor block (1).
3. The improved structure of culvert pipes of reservoir dam according to claim 1 or 2, characterized in that: the pipe fitting (8) is a PE pipe.
4. The improved structure of culvert pipes of reservoir dam body of claim 2, wherein: the outlet section is further provided with an outlet ballast (10).
5. The improved structure of culvert pipes of reservoir dam body of claim 1, wherein: a flow meter (11), a maintenance valve (12) and a working valve (13) are sequentially arranged in the gate valve well (14); the gate valve well (14) is connected with a stilling pool (15) and a water outlet channel (16) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043183.XU CN210975737U (en) | 2019-07-05 | 2019-07-05 | Reservoir dam body culvert pipe transformation structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043183.XU CN210975737U (en) | 2019-07-05 | 2019-07-05 | Reservoir dam body culvert pipe transformation structure |
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| Publication Number | Publication Date |
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| CN210975737U true CN210975737U (en) | 2020-07-10 |
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| CN201921043183.XU Active CN210975737U (en) | 2019-07-05 | 2019-07-05 | Reservoir dam body culvert pipe transformation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241788A (en) * | 2019-07-05 | 2019-09-17 | 长江勘测规划设计研究有限责任公司 | A kind of reservoir dam body culvert pipe reconstruction structure and construction method |
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2019
- 2019-07-05 CN CN201921043183.XU patent/CN210975737U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241788A (en) * | 2019-07-05 | 2019-09-17 | 长江勘测规划设计研究有限责任公司 | A kind of reservoir dam body culvert pipe reconstruction structure and construction method |
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