CN111305172A - Diversion and drainage bidirectional pressure tunnel - Google Patents
Diversion and drainage bidirectional pressure tunnel Download PDFInfo
- Publication number
- CN111305172A CN111305172A CN202010252480.6A CN202010252480A CN111305172A CN 111305172 A CN111305172 A CN 111305172A CN 202010252480 A CN202010252480 A CN 202010252480A CN 111305172 A CN111305172 A CN 111305172A
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- pressure
- drainage
- water
- tunnel
- outlet
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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
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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
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a water diversion and drainage bidirectional pressure tunnel. The invention comprises a water inlet pool section, an inlet pressure box culvert section, an inlet overhaul gate, a pressure tunnel body section, an outlet pressure steel pipe section, an outlet control gate and a water diversion pump station. In the flood period, the working valve of the water diversion pump station is closed, and flood flows are controlled by the outlet control gate to the drainage area through the pressure tunnel; in the dry period, the outlet control gate is closed, and water is pumped by the water pump station to the river channel through the pressure tunnel. The invention can share the same tunnel for water diversion and drainage, the tunnel function is no longer single, the land is saved, the engineering operation management is convenient, the engineering investment is greatly saved, and the economic benefit is remarkable.
Description
Technical Field
The invention relates to a water diversion and drainage bidirectional pressure tunnel in water conservancy and hydropower engineering, in particular to a pressure tunnel which can divert water in a dry period and drain flood in a flood period in water diversion and drainage engineering.
Background
In the diversion project, when a pump station is adopted to lift water in a bearing and releasing area, the pressure in a tunnel is difficult to ensure, cavitation damage is difficult to occur, when the diversion section area is increased, the project investment must be increased, the land area required by a water inlet and a water outlet is large, and the land acquisition and removal difficulty is very high in a precious land flat area.
In drainage engineering, when mountain area nature flood drainage, the peak discharge is great often, but duration is short, adopts the non-pressure tunnel flood discharge mostly, and the tunnel structure section is big, and the engineering investment is big.
Disclosure of Invention
The invention aims to solve the problems of single tunnel function, resource waste and the like when the conventional tunnel conducts water diversion or drainage, and provides the pressure tunnel which can conduct water diversion and drainage in two directions, so that water diversion and drainage can be realized in the dry season, drainage in the flood season and flood discharge, on one hand, the engineering investment can be effectively saved, and the operation and management are convenient; on the other hand, the drainage intake pool is used as a water diversion outlet, so that the land can be effectively saved.
The technical scheme adopted by the invention is as follows: a diversion and drainage bidirectional pressure tunnel comprises a water inlet pool section, an inlet pressure box culvert section, an inlet overhaul gate, a tunnel body section, an outlet pressure steel pipe section, an outlet control gate and a diversion pump station; the water inlet pool section is smoothly connected with the river channel in a horn shape; the inlet pressure box culvert section is connected with the tail end of the water inlet pool section and the inlet maintenance gate along the waterlogging drainage direction and is buried under the construction ground; the inlet maintenance gate is arranged at the inlet of the mountain side tunnel; the pressure tunnel body section is arranged to the tunnel outlet along the slope; the outlet pressure steel pipe section is connected with the tunnel outlet and the outlet control gate along the drainage direction and buried in the underground for construction; the outlet control gate is arranged on the side of the leakage bearing area; the diversion pump station and the outlet control gate are arranged side by side, and the tail end of the diversion pump station is connected to the outlet pressure steel pipe through the water outlet steel pipe.
Further, the intake basin section adopts the slope formula of digging down, and water inlet department is provided with and blocks the sand bank, and water inlet both sides bank wall adopts buttress formula barricade, adopts slope and present situation ground to link up behind the wall back fill soil to the wall crown elevation.
Furthermore, the inlet pressure box culvert section adopts a concrete rectangular structure, the two sides of the inlet pressure box culvert section adopt slope-releasing excavation, well point dewatering is adopted, and the side slope adopts net-hanging concrete-spraying support.
Furthermore, the inlet maintenance gate adopts a flat plate straight pull gate for maintenance.
Furthermore, the pressure tunnel body section adopts a circular section, and the whole line is lined with reinforced concrete.
Furthermore, the outlet pressure steel pipe section adopts a concrete outer-wrapping structure type and is provided with a ballast block, and the foundation of the ballast block is treated by adopting a prefabricated square pile.
Furthermore, the outlet control gate adopts a radial gate design, so that the drainage flow can be effectively controlled; adopt its stagnant water design effect of radial gate design better, close the radial gate when the diversion, can ensure to be in the state of having pressure in the tunnel.
Furthermore, the water diversion pump station consists of a riprap anti-impact groove, a pump station water inlet pool, a pump room and a water outlet steel pipe; the water outlet steel pipe at the tail end of the priming pump station is combined into one steel pipe connected to the outlet pressure steel pipe.
Furthermore, the water pump type of the water diversion pump station adopts a vertical mixed flow pump, a working valve and an overhauling butterfly valve are arranged along the water diversion direction, and the working valve is closed during drainage so as to ensure that the interior of the tunnel is in a pressure state.
Furthermore, the water diversion and drainage of the water diversion and drainage bidirectional pressure tunnel share the same tunnel, the tunnel function is not single, and the engineering investment can be greatly saved; the outlet control gate and the diversion pump station share the same management area, so that the land is saved, and the management is convenient.
The invention has the beneficial effects that:
1) the drainage intake pond is regarded as the diversion export concurrently, and export control floodgate and diversion pump station set up side by side, and the same administrative area of sharing is convenient for engineering operation management when practicing thrift the soil.
2) The drainage tunnel has large overflowing section and small water diversion flow, thereby having small flow velocity, small head loss and difficult cavitation damage.
3) Diversion and drainage share the same tunnel, and the tunnel function is no longer single, can practice thrift the engineering investment greatly, and economic benefits is showing.
Drawings
FIG. 1 is a plane layout diagram of a bidirectional pressure tunnel for water diversion and drainage;
FIG. 2 is a cross-sectional view of an inlet pressure box culvert section of the present invention;
FIG. 3 is a cross-sectional view of the service access gate of the present invention;
FIG. 4 is a cross-sectional view of a pressure tunnel section of the present invention;
FIG. 5 is a cross-sectional view of a section of the outlet penstock of the present invention;
FIG. 6 is a longitudinal cross-sectional view of the outlet control gate of the present invention;
FIG. 7 is a longitudinal cross-sectional view of the priming pump station of the present invention.
In the figure: 1-a water inlet pool section; 2-inlet pressure box culvert section; 3-an inlet maintenance gate; 4-a pressure tunnel body section; 5-outlet pressure steel pipe section; 6-outlet control gate; 7-a water diversion pump station; 8-water outlet steel pipe; 9-river channel; 10-a leakage bearing area; 11-well point dewatering; 12-hanging net and spraying concrete for supporting; 13-flat plate straight pull gate; 14-an import service lock chamber; 15-opening and closing the machine room; 16-a vent hole; 17-prefabricating a square pile; 18-a radial gate; 19-an outlet control lock chamber; 20-stilling pool; 21-sea romance; 22-throwing stone anti-erosion groove; 23-a pump station water inlet pool; 24-a pump room; 25-a working valve; and 26-repairing the butterfly valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 7, the water diversion and drainage bidirectional pressure tunnel of the invention comprises a water inlet pool section 1, an inlet pressure box culvert section 2, an inlet overhaul gate 3, a pressure tunnel body section 4, an outlet pressure steel pipe section 5, an outlet control gate 6 and a water diversion pump station 7.
Intake pool section 1 adopts open type horn mouth and river course 9 to link up, and intake pool section 1 import sets up blocks husky bank, and intake pool section 1 adopts the slope formula of digging down, and both sides bank wall adopts buttress formula barricade, adopts slope and present situation ground to meet behind the wall back fill to the wall crown elevation.
Inlet pool section 1 and import maintenance floodgate 3 are connected to import pressure box culvert section 2, adopt concrete rectangle structure, and 2 both sides in import pressure box culvert section adopt and put the slope excavation, adopt well point precipitation 11, and the side slope adopts the net hanging to spout concrete support 12.
The inlet maintenance gate 3 is positioned at the inlet of the tunnel, adopts a flat plate straight pull gate 13 for maintenance, is provided with a vent hole 16 leading to the ground, and is sequentially provided with an inlet maintenance gate chamber 14 and an opening and closing machine room 15 above the ground.
The pressure tunnel body section 4 adopts a circular section, is arranged to the exit of the tunnel along the slope, is lined by reinforced concrete on the whole line, and has the length of more than 1500 m.
Export pressure steel pipe section 5 is connected the tunnel and is exported to export control floodgate 6, adopts concrete outsourcing structural type formula, establishes the mound, and the basis adopts prefabricated square pile 17 to handle.
The outlet control gate 6 consists of an outlet control gate chamber 19, an opening and closing machine room 15, a stilling pool 20, a sea wall 21 and a riprap erosion prevention groove 22. The gate adopts radial gate 18 design, can effective control drainage flow, need close radial gate 18 when leading water, adopts radial gate 18 to design its stagnant water design effect better, can ensure to be in the state of having pressure in the tunnel.
The water diversion pump station 7 consists of a riprap erosion prevention groove 22, a pump station water inlet pool 23, a pump room 24 and a water outlet steel pipe 8, wherein the water outlet steel pipe 8 is combined into one by a plurality of pipes and is connected to the outlet pressure steel pipe 5. The water pump type adopts a vertical mixed flow pump, a working valve 25 and an overhaul butterfly valve 26 are sequentially arranged from the drainage area 10 along the water diversion direction, the working valve 25 is closed during drainage, and the pressure state in the tunnel can be ensured.
The above embodiments are described with reference to the accompanying drawings, but the present invention is not limited thereto, and it should be noted that, for those skilled in the art, the technical solutions obtained by equivalent replacement or equivalent change without departing from the spirit of the present invention belong to the scope of the present invention.
Claims (10)
1. The utility model provides a diversion drainage waterlogging two-way pressure tunnel which characterized in that: the system comprises a water inlet pool section, an inlet pressure box culvert section, an inlet overhaul gate, a pressure tunnel body section, an outlet pressure steel pipe section, an outlet control gate and a diversion pump station; the water inlet pool section is smoothly connected with the river channel in a horn shape; the inlet pressure box culvert section is connected with the tail end of the water inlet pool section and the inlet maintenance gate along the waterlogging drainage direction and is buried under the construction ground; the inlet maintenance gate is arranged at the inlet of the mountain side tunnel; the pressure tunnel body section is arranged to the tunnel outlet along the slope; the outlet pressure steel pipe section is connected with the tunnel outlet and the outlet control gate along the drainage direction and buried in the underground for construction; the outlet control gate is arranged on the side of the leakage bearing area; the diversion pump station and the outlet control gate are arranged side by side, and the tail end of the diversion pump station is connected to the outlet pressure steel pipe through the water outlet steel pipe.
2. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the intake pool section adopts the slope formula of digging down, and water inlet department is provided with and blocks the sand bank, and water inlet both sides bank wall adopts buttress formula barricade, adopts slope and present situation ground to link up after filling soil behind the wall to the wall crown elevation.
3. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the inlet pressure box culvert section adopts a concrete rectangular structure, the two sides of the inlet pressure box culvert section adopt slope-releasing excavation, well point dewatering is adopted, and the side slope adopts net-hanging concrete-spraying support.
4. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the inlet maintenance gate adopts a flat plate straight pull gate for maintenance.
5. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the pressure tunnel body section adopts a circular section, and the whole line adopts a reinforced concrete lining.
6. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the outlet pressure steel pipe section adopts a concrete outer-wrapping structure type and is provided with a ballast pier, and the foundation of the outlet pressure steel pipe section is processed by adopting a prefabricated square pile.
7. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the outlet control gate adopts the radial gate design, closes the radial gate when drawing water, can ensure to be in the pressure state in the tunnel.
8. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the water diversion pump station consists of a riprap erosion prevention groove, a pump station water inlet pool, a pump room and a water outlet steel pipe; the water outlet steel pipe at the tail end of the priming pump station is combined into one steel pipe connected to the outlet pressure steel pipe.
9. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the water pump type of the water diversion pump station adopts a vertical mixed flow pump, a working valve and an overhauling butterfly valve are arranged along the water diversion direction, and the working valve is closed during drainage so as to ensure that the interior of the tunnel is in a pressure state.
10. The water diversion and drainage bidirectional pressure tunnel according to claim 1, characterized in that: the diversion and drainage share the same tunnel outlet control gate and the diversion pump station share the same management area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252480.6A CN111305172A (en) | 2020-04-01 | 2020-04-01 | Diversion and drainage bidirectional pressure tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252480.6A CN111305172A (en) | 2020-04-01 | 2020-04-01 | Diversion and drainage bidirectional pressure tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305172A true CN111305172A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010252480.6A Pending CN111305172A (en) | 2020-04-01 | 2020-04-01 | Diversion and drainage bidirectional pressure tunnel |
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| CN (1) | CN111305172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047244A (en) * | 2021-03-18 | 2021-06-29 | 中国电建集团中南勘测设计研究院有限公司 | Hydropower station water diversion surge chamber arrangement structure and method suitable for TBM construction |
-
2020
- 2020-04-01 CN CN202010252480.6A patent/CN111305172A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047244A (en) * | 2021-03-18 | 2021-06-29 | 中国电建集团中南勘测设计研究院有限公司 | Hydropower station water diversion surge chamber arrangement structure and method suitable for TBM construction |
| CN113047244B (en) * | 2021-03-18 | 2022-06-14 | 中国电建集团中南勘测设计研究院有限公司 | Hydropower station water diversion surge chamber arrangement structure and method suitable for TBM construction |
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