CN113293742A - Diversion tunnel stone-collecting pit hydraulic sand-discharging facility - Google Patents
Diversion tunnel stone-collecting pit hydraulic sand-discharging facility Download PDFInfo
- Publication number
- CN113293742A CN113293742A CN202110723707.5A CN202110723707A CN113293742A CN 113293742 A CN113293742 A CN 113293742A CN 202110723707 A CN202110723707 A CN 202110723707A CN 113293742 A CN113293742 A CN 113293742A
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- CN
- China
- Prior art keywords
- sand
- tunnel
- stone
- collecting pit
- diversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
- E02B8/023—Arresting devices for waterborne materials
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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
Abstract
The invention relates to a hydraulic sand discharge facility for a diversion tunnel stone collecting pit, and belongs to the technical field of diversion tunnel structural design of hydropower stations developed in a diversion manner. The invention skillfully utilizes the diversion tunnel construction branch tunnel to arrange a hydraulic automatic sand discharge system, namely, a sand flushing hole is arranged immediately at the downstream of the stone collecting pit, and the sand flushing holes converge to form a sand flushing channel to turn to enter the bottom of the construction branch tunnel plugging body; and arranging a sand flushing gate behind the blocking body, excavating by utilizing the construction branch tunnel part behind the gate to form a sand discharge channel, and taking the other half as a traffic access channel. When the sediment of gravel and sand in the stone collection pit is more, the power station is not needed to stop and empty the tunnel, and the power station enters the tunnel manually to clean the gravel and sand in the stone collection pit. The sand and stone in the stone collecting pit can be discharged out of the tunnel by only opening the sand flushing gate and utilizing the water pressure difference of the gate. The invention is very beneficial to removing sand and stone in the stone collecting pit of the tunnel, simultaneously avoids the safety risk of manually entering the tunnel to remove sand and stone after the power station is stopped, and greatly improves the power generation benefit of the power station.
Description
Technical Field
The invention relates to a hydraulic sand discharge facility for a diversion tunnel stone collecting pit, and belongs to the technical field of diversion tunnel structural design of hydropower stations developed in a diversion manner.
Background
The diversion tunnel of the hydropower station developed in a diversion way is generally longer in order to facilitate the water head concentration. In recent years, more concrete spraying and anchor bolt supporting are adopted as permanent supporting modes in a better surrounding rock tunnel section, and reinforced concrete lining is adopted only in a poorer surrounding rock tunnel section. The tunnel that adopts the shotcrete to strut can not avoid the fracture to fall the piece completely at the operation period shotcrete, and the diversion formula power station that develops water often builds on the mountain river, and river silt content is heavier, and the tunnel water inlet can not prevent silt to get into the tunnel completely, therefore this type of tunnel often sets up one to several collection stone pit in the hole, blocks are fallen to the interception shotcrete, the gravel and sand that the water inlet got into, the sediment etc. is abandoned in construction that is not clean up. The stone collecting pit is generally a rectangular section, the top is generally provided with a metal parting bead, water flow drives sand and stones to flow along the bottom of the pit, and the sand and stones are easy to fall into the pit for deposition. The outside of the pit is a standard section of the tunnel, and the stone collecting pit does not influence the flow state of water flow in the tunnel. See fig. 1.
In the scheme, the sand and stones deposited in the stone collecting pit can not be automatically discharged out of the pit, after the hydropower station is stopped and the tunnel is emptied, the sealing door of the construction branch hole is opened, the sand and stones enter the tunnel to be manually desilted, and the sand and stones deposited in the stone collecting pit are cleaned and then transported out of the tunnel. The traditional method has the disadvantages of shutdown, loss of generated energy, large labor consumption, severe working conditions and great potential safety hazard.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a diversion tunnel stone collection hole water conservancy sand discharging facility, under the circumstances of not shutting down, or do not put empty tunnel under the circumstances and all can discharge the sedimentary gravel and sand in the stone collection hole after shutting down.
In order to solve the technical problems, the invention adopts the technical scheme that: diversion tunnel stone trap hydraulic power sand discharge facility, including diversion tunnel, be provided with the stone trap on diversion tunnel's the bottom plate, diversion tunnel's middle part is connected with the construction branch tunnel, the construction branch tunnel is provided with the construction branch tunnel shutoff body at its link with diversion tunnel, the stone trap sets up the upstream side at diversion tunnel and construction branch tunnel connecting portion, stone trap end is provided with one or more towards husky drill way, towards husky drill way converge at the back for towards the sand wash, towards the sand wash turn to get into construction branch tunnel shutoff body bottom, the downstream side of the sand wash at construction branch tunnel shutoff body is provided with towards the sand lock, the downstream end of towards the sand lock sets up the sand discharge way.
Further, the method comprises the following steps: the back of the sand flushing orifices converge to form a sand flushing channel.
Further, the method comprises the following steps: a traffic passage is arranged beside the sand discharge passage.
The invention has the beneficial effects that: the diversion tunnel construction branch tunnel is skillfully utilized to arrange a hydraulic automatic sand discharge system, namely, a sand flushing hole is arranged immediately at the downstream of the stone collecting pit, and the sand flushing holes converge to form a sand flushing channel to turn to enter the bottom of the construction branch tunnel plugging body; and arranging a sand flushing gate behind the blocking body, excavating by utilizing the construction branch tunnel part behind the gate to form a sand discharge channel, and taking the other half as a traffic access channel. When the sediment of gravel and sand is more in the collection stone hole, do not need the power station to shut down and let out the tunnel, artifical entering tunnel to clear up the gravel and sand in collection stone hole. The sand and stone in the stone collecting pit can be discharged out of the tunnel by only opening the sand flushing gate and utilizing the water pressure difference of the gate. The invention is very beneficial to removing sand and stone in the stone collecting pit of the tunnel, simultaneously avoids the safety risk of manually entering the tunnel to remove sand and stone after the power station is stopped, and greatly improves the power generation benefit of the power station.
Drawings
Fig. 1 is a schematic view of a prior art structure.
Fig. 2 is a schematic plan view of the present invention.
Fig. 3 is a schematic longitudinal section of the present invention.
The labels in the figure are: 1-diversion tunnel, 2-stone collection pit, 3-construction branch hole, 4-construction branch hole blocking body, 5-sand flushing hole opening, 6-sand flushing channel, 7-sand flushing gate, 8-sand discharge channel and 9-steel parting strip.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, the construction method comprises a diversion tunnel 1, a stone collecting pit 2 is arranged on a bottom plate of the diversion tunnel 1, a construction branch 3 is connected to the middle of the diversion tunnel 1, a construction branch blocking body 4 is arranged at the connecting end of the construction branch 3 and the diversion tunnel 1, the stone collecting pit 2 is arranged on the upstream side of the connecting portion of the diversion tunnel 1 and the construction branch 3, one or more sand flushing orifices 5 are arranged at the tail end of the stone collecting pit 2, a sand flushing channel 6 is converged behind the sand flushing orifices 5, the sand flushing channel 6 is turned to enter the bottom of the construction branch blocking body 4, a sand flushing gate 7 is arranged on the downstream side of the construction branch blocking body 4 of the sand flushing channel 6, and a sand discharge channel 8 is arranged at the downstream end of the sand flushing gate 7. A sand flushing channel 6 and a sand flushing gate 7 are arranged behind the stone collecting pit, and through monitoring, when more sand and stone impurities are deposited in the stone collecting pit 2, the sand flushing gate 7 is opened, and the sand and stone in the stone collecting pit 2 can be discharged out of the pit by utilizing the water pressure difference between the front and the rear of the gate.
In order to make the structure simple and reliable, a plurality of sand flushing orifices 5 are converged into a sand flushing channel 6 at the back. The specific number of sand wash ports 5 is designed according to the tunnel scale.
In order to facilitate the operation and maintenance of the sand sluicing gate 7, a traffic access is arranged beside the sand discharge channel 8. During construction, the construction branch tunnel 3 is partially excavated to form a sand discharge channel 8, and the other half is used as a traffic access channel.
Claims (3)
1. Diversion tunnel stone collection hole water conservancy facility of arranging sand, including diversion tunnel (1), be provided with on the bottom plate of diversion tunnel (1) stone collection hole (2), the middle part of diversion tunnel (1) is connected with construction branch tunnel (3), and construction branch tunnel (3) are provided with construction branch tunnel shutoff body (4), its characterized in that at its link with diversion tunnel (1): the stone collecting pit (2) is arranged on the upstream side of a connecting portion of the diversion tunnel (1) and the construction branch tunnel (3), one or more sand flushing orifices (5) are formed in the tail end of the stone collecting pit (2), the sand flushing orifices (5) are converged into a sand flushing channel (6) at the back, the sand flushing channel (6) turns to enter the bottom of the construction branch tunnel plugging body (4), a sand flushing gate (7) is arranged on the downstream side of the construction branch tunnel plugging body (4) of the sand flushing channel (6), and a sand discharging channel (8) is arranged at the downstream end of the sand flushing gate (7).
2. The diversion tunnel stone-collecting pit hydraulic sand-discharging facility of claim 1, wherein: the back of the sand flushing orifices (5) converges into a sand flushing channel (6).
3. The diversion tunnel stone-collecting pit hydraulic sand-discharging facility of claim 1 or 2, characterized in that: a traffic access passage is arranged beside the sand discharge passage (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110723707.5A CN113293742A (en) | 2021-06-29 | 2021-06-29 | Diversion tunnel stone-collecting pit hydraulic sand-discharging facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110723707.5A CN113293742A (en) | 2021-06-29 | 2021-06-29 | Diversion tunnel stone-collecting pit hydraulic sand-discharging facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113293742A true CN113293742A (en) | 2021-08-24 |
Family
ID=77329877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110723707.5A Pending CN113293742A (en) | 2021-06-29 | 2021-06-29 | Diversion tunnel stone-collecting pit hydraulic sand-discharging facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113293742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753314A (en) * | 2022-04-24 | 2022-07-15 | 中国电建集团西北勘测设计研究院有限公司 | Structure of husky is arranged in subsiding water of many silt channels |
-
2021
- 2021-06-29 CN CN202110723707.5A patent/CN113293742A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753314A (en) * | 2022-04-24 | 2022-07-15 | 中国电建集团西北勘测设计研究院有限公司 | Structure of husky is arranged in subsiding water of many silt channels |
| CN114753314B (en) * | 2022-04-24 | 2024-01-19 | 中国电建集团西北勘测设计研究院有限公司 | Sediment outflow structure of many silt channels |
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