CN212714848U - Initial diversion tunnel plugging gate - Google Patents
Initial diversion tunnel plugging gate Download PDFInfo
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- CN212714848U CN212714848U CN202021167243.1U CN202021167243U CN212714848U CN 212714848 U CN212714848 U CN 212714848U CN 202021167243 U CN202021167243 U CN 202021167243U CN 212714848 U CN212714848 U CN 212714848U
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- gate
- diversion tunnel
- initial
- preformed hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model relates to an initial stage diversion tunnel shutoff gate. The utility model discloses an early gate and later stage gate, both set gradually at the entrance point of initial stage diversion tunnel, and early gate bottom is provided with the preformed hole. The preformed hole is arranged in the middle of the width direction of the initial diversion tunnel. When the ecological water-saving device is used, the gate is firstly opened, the water level rises, and the ecological flow is discharged through the reserved hole; after the water level rises to the permanent drainage structure, the flow can be drained through the permanent drainage channel, and then the later-stage gate can be lowered, and then the concrete construction of the plugging section is carried out. The utility model discloses only increased a gate of taking the preformed hole, can not influence the shutoff quality, and the engineering investment is lower.
Description
Technical Field
The utility model relates to an initial stage diversion tunnel shutoff gate belongs to hydraulic and hydroelectric engineering field.
Background
After the diversion tunnel is subjected to sluice-down water storage in the initial stage of the hydraulic and hydroelectric engineering, because the engineering has no drainage channel temporarily, if no measures are taken, the river course flowing down can be cut off and dried in a short period. Therefore, to keep downstream ecology from being destroyed, ecological flux needs to be let down. At present, the ecological flow discharge pipe is arranged on a diversion tunnel in the initial water storage period of the hydraulic and hydroelectric engineering, or the pump station pumps water to discharge the ecological flow. However, the ecological flow water discharge pipe is arranged on the diversion tunnel, so that the design workload of the diversion tunnel is increased, and the blocking quality of the diversion tunnel is influenced; the equipment investment and the operation cost for pumping water by a pump station to cross the dam to discharge ecological flow are very high and are also limited by factors such as high pumping lift, large flow and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the initial diversion tunnel plugging gate is simple in structure and low in cost.
For solving the technical problem the utility model discloses the technical scheme who adopts is: initial stage diversion tunnel shutoff gate, including earlier stage gate and later stage gate, both set gradually at the entrance point of initial stage diversion tunnel, earlier stage gate is located the one side that is more close to initial stage diversion tunnel import outer terminal surface, and earlier stage gate bottom is provided with the preformed hole.
Further, the method comprises the following steps: the preformed hole is arranged in the middle of the width direction of the initial diversion tunnel.
Further, the method comprises the following steps: a baffle is arranged right in front of the preformed hole on the upstream side of the advanced gate; the baffle is fixedly connected with the advanced gate through a connecting rod.
Further, the method comprises the following steps: the connecting rod is a plurality of pieces which are evenly distributed along the circumferential direction of the preformed hole at intervals.
Further, the method comprises the following steps: the baffle is arranged with the antecedent gate parallel, and the baffle can cover the corresponding region of preformed hole completely in the projection that the antecedent gate openly formed.
The utility model has the advantages that: when the ecological water-saving device is used, the gate is firstly opened, the water level rises, and the ecological flow is discharged through the reserved hole; after the water level rises to the permanent drainage structure, the flow can be drained through the permanent drainage channel, and then the later-stage gate can be lowered, and then the concrete construction of the plugging section is carried out. The utility model discloses only increased a gate of taking the preformed hole, can not influence the shutoff quality, and the engineering investment is lower.
Drawings
Fig. 1 is an elevation view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the connection structure between the middle baffle and the early gate of the present invention;
the labels in the figure are: 1-an early stage gate, 2-a later stage gate, 3-an early stage diversion tunnel, 4-a preformed hole, 5-a mountain body, 6-a diversion tunnel plugging section, 7-a baffle plate and 8-a connecting rod.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model discloses an early gate 1 and later stage gate 2, both set gradually at the entrance point of initial stage diversion tunnel 3, and early gate 1 is located the one side that is closer to the outer terminal surface of initial stage diversion tunnel 3 import, and early gate 1 bottom is provided with preformed hole 4. The prepared hole 4 is preferably provided in the middle of the width direction of the initial diversion tunnel 3.
When in use, the gate 1 is firstly released, the water level rises, and the ecological flow is discharged through the reserved hole 4; after the water level rises to the permanent drainage structure, the flow can be drained through the permanent drainage channel, and then the later-stage gate 2 can be closed, and then the concrete construction of the plugging section 6 is carried out. The utility model discloses only increased a gate of taking the preformed hole, can not influence the shutoff quality, and the engineering investment is lower.
Preferably, as shown in fig. 3, a baffle 7 is arranged on the upstream side of the advanced gate 1 right in front of the prepared hole 4; the baffle 7 is fixedly connected with the early gate 1 through a connecting rod 8. The baffle 7 can play a buffering role and prevent water flow from directly scouring the preformed hole 4. In addition, because baffle 7 can play the cushioning effect, during lower floodgate later stage gate 2, rivers can not directly be penetrated later stage gate 2 on, are favorable to later stage gate 2 to brake down.
In order to make the connection structure stable and reliable, the connecting rods 8 are a plurality of pieces which are uniformly distributed at intervals along the circumferential direction of the preformed hole 4.
In order to make the baffle 7 function more fully, the preferred arrangement form is that the baffle 7 is arranged in parallel with the prior gate 1, and the projection of the baffle 7 formed on the front surface of the prior gate 1 can completely cover the corresponding area of the prepared hole 4.
Claims (5)
1. Initial stage diversion tunnel shutoff gate, its characterized in that: the novel diversion tunnel comprises an early stage gate (1) and a later stage gate (2), wherein the early stage gate (1) and the later stage gate (2) are sequentially arranged at the inlet end of an initial stage diversion tunnel (3), the early stage gate (1) is positioned on one side closer to the outer end face of the inlet of the initial stage diversion tunnel (3), and a preformed hole (4) is formed in the bottom of the early stage gate (1).
2. The initial diversion tunnel plugging gate of claim 1, wherein: the preformed hole (4) is arranged in the middle of the width direction of the initial diversion tunnel (3).
3. The initial diversion tunnel plugging gate of claim 1 or 2, wherein: a baffle (7) is arranged right in front of the preformed hole (4) on the upstream side of the advanced gate (1); the baffle (7) is fixedly connected with the advanced gate (1) through a connecting rod (8).
4. The initial diversion tunnel plugging gate of claim 3, wherein: the connecting rods (8) are a plurality of pieces which are uniformly distributed at intervals along the circumferential direction of the preformed hole (4).
5. The initial diversion tunnel plugging gate of claim 3, wherein: the baffle (7) and the early gate (1) are arranged in parallel, and the projection of the baffle (7) formed on the front surface of the early gate (1) can completely cover the corresponding area of the preformed hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167243.1U CN212714848U (en) | 2020-06-22 | 2020-06-22 | Initial diversion tunnel plugging gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167243.1U CN212714848U (en) | 2020-06-22 | 2020-06-22 | Initial diversion tunnel plugging gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212714848U true CN212714848U (en) | 2021-03-16 |
Family
ID=74961007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021167243.1U Active CN212714848U (en) | 2020-06-22 | 2020-06-22 | Initial diversion tunnel plugging gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212714848U (en) |
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2020
- 2020-06-22 CN CN202021167243.1U patent/CN212714848U/en active Active
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