CN212000918U - Pipe burying device for emptying under foundation core earth-rock dam - Google Patents
Pipe burying device for emptying under foundation core earth-rock dam Download PDFInfo
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- CN212000918U CN212000918U CN201922185010.8U CN201922185010U CN212000918U CN 212000918 U CN212000918 U CN 212000918U CN 201922185010 U CN201922185010 U CN 201922185010U CN 212000918 U CN212000918 U CN 212000918U
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Abstract
The utility model provides a pipe burying device for emptying under a rock-based core earth-rock dam, which comprises an inlet elevation, an inlet section, a core front bedrock pipe burying section, a core bottom section, a core rear bedrock pipe burying section, an inspection valve, an energy dissipation valve, a valve chamber and a core earth-rock dam, wherein the inlet elevation is positioned at the bottom of the core earth-rock dam; the core wall front bedrock buried pipe section is connected with the inlet section, the core wall rear bedrock buried pipe section is connected with the valve chamber through the maintenance valve, and the energy dissipation valve is arranged between the maintenance valve and the valve chamber. The utility model discloses the toper valve that disappears has been adopted at the low reaches, has simplified the dissipater, more effectual energy dissipation problem of having solved.
Description
Technical Field
The utility model belongs to hydraulic and hydroelectric engineering field, in particular to pipe laying device empties under rock-based core earth-rock dam.
Background
In the construction of water conservancy and hydropower engineering, a core wall earth-rock dam is one of common dam types, in order to ensure engineering safety, a relief building is usually required to be built, reservoir water is relieved through the relief building under some special conditions, a relief tunnel is generally built on two sides in the traditional technology, as an inlet of the relief tunnel is positioned below the dead water level of a reservoir, a pressure short pipe inlet is generally required to be arranged at the inlet of the tunnel, pressure flow is converted into non-pressure flow and then enters a non-pressure section, an underflow energy dissipater or a trajectory jet, a narrow slit and other energy dissipaters are generally arranged at the downstream of an outlet of the tunnel, a gate chamber is arranged at the outlet, and the energy dissipater is arranged at the downstream of the gate chamber.
The technology needs construction procedures such as an inlet support locking notch, tunnel excavation, primary support, secondary concrete lining, water inlet tower or lock chamber, downstream energy dissipater excavation and concrete pouring, and has the problems of high tunnel excavation construction difficulty, high manufacturing cost and the like, and particularly when the tunnel passes through a bad geological section, the risk of large collapse and the like often exists; in addition, the landforms on both sides are generally higher than the riverbeds, so in order to meet the requirement of emptying the imports, the imports open channel sections are required to be excavated, and the manufacturing cost is further increased.
In addition, the scheme of pipe burying under the dam similar to the technology is that the traditional technology is often buried in the earth-rock dam directly, for the earth-rock dam, the pipe burying under the dam is a building which needs special attention, and the main problem is that the pipe burying and the peripheral earth-rock material are combined, especially when the pipe burying and the peripheral earth-rock material penetrate through the impervious body section, how to ensure the integrity of the impervious body, and when the pipe burying and the peripheral earth-rock material are not properly processed, the piping damage along the outer side of the pipeline is easy to generate.
The utility model provides a bury the steel pipe underground after digging with bedrock upper trough, realize the buried pipe scheme under the dam of unloading function, avoided the problem that above-mentioned tunnel scheme exists.
SUMMERY OF THE UTILITY MODEL
In order to overcome the current prevention of seepage body integrality that can not guarantee, when handling not suitable, produce the problem of piping destruction along the pipeline outside easily, the utility model provides a method of burying pipe is vacated under rock-based core earth-rock dam, the utility model discloses a low reaches toper energy dissipation valve technique has simplified the energy dissipater, and the more effectual energy dissipation problem of having solved has avoided the construction risk of tunnel scheme, has reduced engineering cost for the progress.
The utility model adopts the technical proposal that:
a pipe burying device for emptying under a rock-based core earth-rock dam comprises an inlet elevation, an inlet section, a core front base rock buried pipe section, a core bottom section, a core rear base rock buried pipe section, an inspection valve, an energy dissipation valve, a valve chamber and the core earth-rock dam, wherein the inlet elevation is positioned at the bottom of the core earth-rock dam; the core wall front bedrock buried pipe section is connected with the inlet section, the core wall rear bedrock buried pipe section is connected with the valve chamber through the maintenance valve, and the energy dissipation valve is arranged between the maintenance valve and the valve chamber.
The inlet of the inlet section is of a vertical shaft type and is arranged into a horn-shaped inlet.
The inlet elevation is arranged at the bottom of the reservoir and is higher than the sediment sedimentation elevation and not less than the minimum submerging depth of the pressure type water inlet.
The bottom excavation elevation of the core wall front bedrock buried pipe section is located at the middle lower part or lower part of the strong weathering line, if the bottom excavation elevation is located at the middle upper part of the strong weathering line, foundation consolidation grouting is carried out, the grouting depth is 3-5 m, the excavation size of a foundation trench is determined according to the thickness of concrete wrapping on the periphery of the buried pipe and is not less than 50cm, and the upper part is backfilled to the dam foundation excavation line.
The core wall rear bedrock buried pipe section and the maintenance valve are provided with a core wall downstream soft foundation section, and an expansion joint is arranged between the core wall downstream soft foundation section and the maintenance valve.
The inlet section is connected with the core wall front bedrock buried pipe section through a bent pipe, and the bending angle of the bent pipe is 90-180 degrees.
The utility model has the advantages that:
the utility model avoids the construction risk of the tunnel scheme, reduces the construction cost and accelerates the progress;
the utility model discloses the piping risk that the buried pipe brought under the traditional dam has been avoided.
The utility model discloses the toper valve that disappears has been adopted at the low reaches, has simplified the dissipater, more effectual energy dissipation problem of having solved.
The following will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic longitudinal section of the present invention.
In the figures, the reference numbers are: 1. an inlet section; 2. burying a pipe section in front bedrock of the core wall; 3. a core bottom section; 4. burying a pipe section in the core wall rear bedrock; 5. A core wall downstream soft base section; 6. an expansion joint; 7. a service valve; 8. an energy dissipation valve; 9. a valve chamber; 10. core earth-rock dam.
Detailed Description
Example 1:
in order to overcome the current prevention of seepage body integrality that can not guarantee, when handling not suitable, produce the problem of the piping destruction in the pipeline outside easily, the utility model provides a emptying pipe laying device under the foundation core earth-rock dam as shown in figure 1, the utility model discloses a low reaches toper energy dissipation valve technique has simplified the energy dissipater, and the more effectual energy dissipation problem of having solved has avoided the construction risk of tunnel scheme, has reduced engineering cost for the progress.
A pipe burying device for emptying under a rock-based core earth-rock dam comprises an inlet elevation, an inlet section 1, a core front base rock pipe burying section 2, a core bottom section 3, a core rear base rock pipe burying section 4, an inspection valve 7, an energy dissipation valve 8, a valve chamber 9 and a core earth-rock dam 10, wherein the inlet elevation is positioned at the bottom of the core earth-rock dam 10, the core bottom section 3 is positioned in the middle of the bottom of the core earth-rock dam 10, and the core front base rock pipe burying section 2 and the core rear base rock pipe burying section 4 are respectively positioned at two sides of the core bottom section 3; the core wall front bedrock buried pipe section 2 is connected with the inlet section 1, the core wall rear bedrock buried pipe section 4 is connected with the valve chamber 9 through the maintenance valve 7, and the energy dissipation valve 8 is arranged between the maintenance valve 7 and the valve chamber 9.
The utility model discloses energy dissipation valve 8 has been adopted at the low reaches, has simplified the energy dissipater, more effectual energy dissipation problem of having solved.
The utility model provides an export service valve 7 and conical energy dissipation valve 8: each valve device is calculated according to the water power, the model of each valve device is reasonably selected together with a manufacturer, and corresponding electric control and automatic operation devices are configured. The valve chamber 9 is arranged, and the size structure of the valve chamber 9 meets the functional requirements of maintenance, operation, anti-floating, seepage prevention, impact prevention, anti-sliding stability and the like. The utility model discloses in the core wall bottom section 3 that provides: the section is positioned at the bottom of the core wall, and the backfilled concrete around the pipe is integrally cast with the concrete of the base of the upper core wall and is implemented after the bottom curtain is grouted, so that the seepage-proofing sealing performance is ensured.
Example 2:
based on embodiment 1, in this embodiment, the inlet of the inlet section 1 is a shaft type, and is configured as a horn type inlet.
The inlet elevation is arranged at the bottom of the reservoir and is higher than the sediment sedimentation elevation and not less than the minimum submerging depth of the pressure type water inlet.
The inlet section 1 is connected with the core wall front bedrock buried pipe section 2 through a bent pipe, and the bending angle of the bent pipe is 90-180 degrees.
The utility model discloses in the import of import section 1 that provides for the shaft type, set up loudspeaker type import, the import elevation is close to the reservoir bottom of a storehouse, should combine silt condition comprehensive argument simultaneously, if be less than silt siltation elevation, then should combine the model test, confirm its sediment outflow effect and operational mode, import section 1 adopts 90-180 return bends to bury the pipeline section 2 with the basement rock before the heart wall and is connected. The utility model discloses well adoption 100 return bends connect.
The bottom excavation elevation of the core wall front bedrock buried pipe section 2 is located at the middle lower part or lower part of a strong weathering line, if the bottom excavation elevation is located at the middle upper part of the strong weathering line, foundation consolidation grouting is carried out, the grouting depth is 3-5 m, the excavation size of a foundation trench is determined according to the peripheral concrete wrapping thickness of the buried pipe and is not less than 50cm, and the upper part is backfilled to a dam foundation excavation line.
The utility model discloses in the core wall preceding bedrock bury pipeline section 2 that provides, its bottom excavation elevation should be located the efflorescence line lower part or lower, should carry out the basis consolidation grout when being located the efflorescence well upper portion, the grout degree of depth is 3 meters to 5 meters, and the foundation ditch excavation size is not less than 50cm according to pipe laying periphery concrete parcel thickness and confirms, and upper portion is backfilled to dam foundation excavation line. Core wall rear bedrock buried pipe section 4: the form requirement is consistent with the front bedrock buried pipe section 2 of the core wall.
The core wall rear bedrock buried pipe section 4 and the maintenance valve 7 are provided with a core wall downstream soft foundation section 5, and an expansion joint 6 is arranged between the core wall downstream soft foundation section 5 and the maintenance valve 7.
The utility model provides a soft basic pipeline section 5 is according to the selective adoption of actual topography geological conditions, if the downstream section basement rock is revealed the elevation higher (the overburden is not more than about 5 meters promptly), can 7 and conical energy dissipation valve sections 8 of lug connection low reaches export service valve, otherwise should set up soft basic pipeline section 5, should set up the telescopic joint 6 at soft basic section initial position simultaneously to according to the trade requirement at initial section, turn section, export valve section setting anchor block.
The energy dissipation valve 8 is a conical energy dissipation valve.
The maintenance valve 7 is a maintenance butterfly valve.
The utility model provides an export service valve 7 and conical energy dissipation valve 8: each valve device is calculated according to the water power, the model of each valve device is reasonably selected together with a manufacturer, and corresponding electric control and automatic operation devices are configured. The valve chamber 9 is arranged, and the size structure of the valve chamber 9 meets the functional requirements of maintenance, operation, anti-floating, seepage prevention, impact prevention, anti-sliding stability and the like.
The utility model discloses in the core wall bottom section 3 that provides: the section is positioned at the bottom of the core wall, and the backfilled concrete around the pipe is integrally cast with the concrete of the base of the upper core wall and is implemented after the bottom curtain is grouted, so that the seepage-proofing sealing performance is ensured.
The utility model discloses avoided the construction risk of tunnel scheme, reduced engineering cost for the progress, avoided the piping risk that traditional dam buried pipe brought under the dam.
The utility model discloses a low reaches toper energy dissipation valve technique has simplified the energy dissipater, the more effectual energy dissipation problem of having solved. By adopting the pressure pipe burying technology, the plane layout can be randomly turned so as to effectively adapt to the change of the terrain and the geology and be beneficial to reducing the manufacturing cost.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The device structure and the system method which are not described in detail in the embodiment are all the well-known technologies and common methods in the industry, and are not described one by one here.
Claims (6)
1. The utility model provides a pipe laying device that vacates under rock-based core earth-rock dam which characterized in that: the device comprises an inlet elevation, an inlet section (1), a core front bedrock buried pipe section (2), a core bottom section (3), a core rear bedrock buried pipe section (4), an overhaul valve (7), an energy dissipation valve (8), a valve chamber (9) and a core earth-rock dam (10), wherein the inlet elevation is positioned at the bottom of the core earth-rock dam (10), the core bottom section (3) is positioned in the middle of the bottom of the core earth-rock dam (10), and the core front bedrock buried pipe section (2) and the core rear bedrock buried pipe section (4) are respectively positioned at two sides of the core bottom section (3); the core wall front bedrock buried pipe section (2) is connected with the inlet section (1), the core wall rear bedrock buried pipe section (4) is connected with the valve chamber (9) through the maintenance valve (7), and the energy dissipation valve (8) is arranged between the maintenance valve (7) and the valve chamber (9).
2. The apparatus for emptying and pipe burying under a rock-based core earth and rockfill dam as claimed in claim 1, wherein: the inlet of the inlet section (1) is of a vertical shaft type and is arranged to be a horn-shaped inlet.
3. The apparatus for emptying and pipe burying under a rock-based core earth and rockfill dam as claimed in claim 1, wherein: the inlet elevation is arranged at the bottom of the reservoir and is higher than the sediment sedimentation elevation and not less than the minimum submerging depth of the pressure type water inlet.
4. The apparatus for emptying and pipe burying under a rock-based core earth and rockfill dam as claimed in claim 1, wherein: the bottom excavation elevation of the core wall front bedrock buried pipe section (2) is located at the middle lower part or lower part of a strong weathering line, when the core wall front bedrock buried pipe section is located at the middle upper part of the strong weathering line, foundation consolidation grouting is carried out, the grouting depth is 3-5 m, the excavation size of a foundation trench is determined according to the peripheral concrete wrapping thickness of the buried pipe and is not less than 50cm, and the upper part is backfilled to a dam foundation excavation line.
5. The apparatus for emptying and pipe burying under a rock-based core earth and rockfill dam as claimed in claim 1, wherein: the core wall rear bedrock buried pipe section (4) and the maintenance valve (7) are provided with a core wall downstream soft foundation section (5), and an expansion joint (6) is arranged between the core wall downstream soft foundation section (5) and the maintenance valve (7).
6. The apparatus for emptying and pipe burying under a rock-based core earth and rockfill dam as claimed in claim 1, wherein: the inlet section (1) is connected with the core wall front bedrock buried pipe section (2) through a bent pipe, and the bending angle of the bent pipe is 90-180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185010.8U CN212000918U (en) | 2019-12-09 | 2019-12-09 | Pipe burying device for emptying under foundation core earth-rock dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185010.8U CN212000918U (en) | 2019-12-09 | 2019-12-09 | Pipe burying device for emptying under foundation core earth-rock dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212000918U true CN212000918U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922185010.8U Active CN212000918U (en) | 2019-12-09 | 2019-12-09 | Pipe burying device for emptying under foundation core earth-rock dam |
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| Country | Link |
|---|---|
| CN (1) | CN212000918U (en) |
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2019
- 2019-12-09 CN CN201922185010.8U patent/CN212000918U/en active Active
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