CN107034978B - Classification drop type rotational flow silo suitable for deep layer tunnel system - Google Patents
Classification drop type rotational flow silo suitable for deep layer tunnel system Download PDFInfo
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- CN107034978B CN107034978B CN201710279976.0A CN201710279976A CN107034978B CN 107034978 B CN107034978 B CN 107034978B CN 201710279976 A CN201710279976 A CN 201710279976A CN 107034978 B CN107034978 B CN 107034978B
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- spiral board
- vertical shaft
- type rotational
- drop type
- rotational flow
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/08—Ventilation of sewers
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a kind of classification drop type rotational flow silos suitable for deep layer tunnel system to form an annular region including the vertical shaft and exhaust pipe being arranged with one heart between the inner wall of the vertical shaft and the outer wall of exhaust pipe；The upper end of the annular region is connected with inlet channel, is equidistantly evenly equipped with several spiral boards in annular region from top to bottom, and annular region lower end is connected with tunnel access port of regulating and storing.It is utilized in the classification drop type rotational flow silo and arranges Multi-stage spiral-plate in vertical shaft, utilize the turbulent diffusion of water cushion on the aeration effect of drop water flow and spiral board, the flow velocity for reducing the lower stream that sluices, effectively inhibits the cavitation and cavitation erosion of vertical shaft regional area while improving vertical shaft effect of energy dissipation.
Description
Technical field
The present invention relates to drainage system technical field more particularly to a kind of classification drop types suitable for deep layer tunnel system
Rotational flow silo.
Background technique
With quickly propelling for China's Development of China's Urbanization, the water permeability of city underlying surface is constantly reduced, inland river Water Surface Ratio
Deficiency, Regulation Function fall sharply, sewerage system water drainage ability wretched insufficiency.Deep layer tunnel system of regulating and storing can effectively increase rainwater
Regulation capacity prevents waterlogging, and since edpth of tunnel is larger, can make full use of city Deep underground space, avoids largely taking over the land for use
And removal, in the drainage planning of China big city using more and more.
Deep layer regulates and stores tunnel system since buried depth is larger, generallys use big depth vertical shaft form and becomes a mandarin, vertical shaft is main
Play a part of to become a mandarin, energy dissipating and exhaust, vertical shaft flow-shape and hydraulic characteristic(s) have to the safe and stable operation of system it is important
It influences.Existing deep layer tunnel system enter flow through shaft have directly fall, rotating slideway, rotation the forms such as ladder and folded plate.Directly
For drop type vertical shaft when drop depth is larger, flow rate of water flow is excessive, is also easy to produce cavitation and cavitation erosion phenomenon, in big depth deep layer tunnel system
Usually it is not suitable for using in system；Under the influence of centrifugal force, water flow declines rotating slideway formula vertical shaft along borehole wall spiral, falls into lower section
Water subfill in, influenced by borehole wall high-speed rotational, the anti-cavitation performance of vertical shaft greatly improves, but eddy flow flow velocity is excessive, silo bottom
And tunnel entrance flow condition is poor；It rotates staged vertical shaft and progress aeration is flowed to lower sluicing using rotation step, it can be effective
The anti-cavitation and effect of energy dissipation of vertical shaft is improved, but vertical shaft decreases to the adaptability of letdown flow；Folded plate type vertical shaft is to water
The letdown flow adaptability of stream is preferable, and effect of energy dissipation is more excellent, but the exhaust passage arrangement size of folded plate type vertical shaft is usually larger,
It is unfavorable for making full use of the space structure into flow through shaft.It becomes a mandarin shaft structure cloth currently, not yet having for deep layer tunnel system
The national standard set, to it is different disengaging stream under the conditions of deep tunnel systems, it is existing enter flow through shaft be difficult to simultaneously effectively solution become a mandarin,
The requirement of energy dissipating and exhaust.
It would therefore be highly desirable to solve the above problems.
Summary of the invention
Goal of the invention: the object of the present invention is to provide one kind can improve vertical shaft inbound traffics adaptation range, improves energy dissipating efficiency
With the classification drop type rotational flow silo suitable for deep layer tunnel system of shaft space utilization rate.
Technical solution: in order to achieve the above object, a kind of classification suitable for deep layer tunnel system of the present invention is fallen
Formula rotational flow silo forms one between the inner wall of the vertical shaft and the outer wall of exhaust pipe including the vertical shaft and exhaust pipe being arranged with one heart
Annular region；The upper end of the annular region is connected with inlet channel, is equidistantly evenly equipped with several rotations from top to bottom in annular region
Flowing plate, annular region lower end are connected with tunnel access port of regulating and storing.It utilizes in the classification drop type rotational flow silo and is arranged in vertical shaft
Multi-stage spiral-plate reduces the lower stream that sluices using the turbulent diffusion of water cushion on the aeration effect of drop water flow and spiral board
Flow velocity effectively inhibits the cavitation and cavitation erosion of vertical shaft regional area while improving vertical shaft effect of energy dissipation.
Wherein, the spiral board includes fan annular slab, and the head end of the fan annular slab is vertically equipped with water fender；Wherein, it is located at
The spiral board of the first floor is connected with inlet channel, and the head end of the tail end of each layer of spiral board and next layer of spiral board is in horizontal plane
On connect, and formed in annular region and be classified rotating water stream channel.Water flow in the classification drop type rotational flow silo is from water inlet
Canal flows into first floor spiral board, flows out along spiral board from spiral board tail end and flow to next layer of spiral board in the form freely to drop
On, a large amount of aerations are formed, flow energy is interior by energy dissipating along rotating water stream channel is classified；The spiral board of the sector ring-plane structure simultaneously
It is effectively utilized the inner space of vertical shaft, structure characteristics of compact layout and space utilization rate height.
Preferably, the distance between described adjacent upper and lower level spiral board is h > (Q/1.5b)2/3, wherein Q becomes a mandarin for vertical shaft
Flow, b are eddy flow board width, b=(D-d1)/2, wherein D is vertical shaft diameter, d1For air slit diameter.
Further, the quantity of the spiral board is n=(H-h1-h2)/h+1, wherein H is shaft depths, h1For first floor eddy flow
Distance of the board bottom portion to shaft top, h2For the distance of bottom spiral board bottom to silo bottom.
Furthermore the sector wrap angle α of the spiral board is 180 °≤α≤270 °.
Preferably, the tail end of the spiral board is vertically equipped with end sill, which is the 0~1/3 of water fender height.Tail
The specific hydraulic jump form that can be highly become a mandarin according to vertical shaft in flow Q and spiral board of bank determines, is ensureing the water flow on spiral board
The flow velocity of the lower stream that sluices of control while smoothly flowing out spiral board.
Further, the height of the water fender is lower than the distance between adjacent upper and lower level spiral board or the water fender
Upper end is abutted against with upper one layer of spiral board.The height of the water fender need to ensure that water flow is overflowed not above water fender, to ensure
Water flow is smoothly flow to below vertical shaft along the rotating water stream channel of classification.
Furthermore it is evenly equipped with several on the exhaust pipe and is located at upper for excluding the ventilation hole of inner air, the ventilation hole
Between layer spiral board and the water fender of lower layer's spiral board.The vertical exhaust pipe of intermediate arrangement in the classification drop type rotational flow silo, week
To arrangement multi-stage annular spiral board, using the space in vertical shaft vertical direction, achieve the purpose that let out under water flow and energy dissipating, it is also simultaneous
The function of vertical shaft exhaust has been cared for, and has taken full advantage of the confined space between vertical shaft and exhaust pipe.
Preferably, the silo bottom is formed with the water subfill of buffering current scour.
The utility model has the advantages that compared with prior art, the present invention has following remarkable advantage: the classification drop type eddy flow is perpendicular first
Using Multi-stage spiral-plate is arranged in vertical shaft in well, spread using the turbulent fluctuation of water cushion on the aeration effect of drop water flow and spiral board
Effect reduces the flow velocity of the lower stream that sluices, effectively inhibits the cavitation of vertical shaft regional area empty while improving vertical shaft effect of energy dissipation
Erosion；Secondly the water flow in the classification drop type rotational flow silo flows into first floor spiral board from inlet channel, along spiral board from eddy flow
The outflow of plate tail end is flow on next layer of spiral board in the form freely to drop, forms a large amount of aerations, and flow energy is rotating along being classified
By energy dissipating in water stream channel；The spiral board of the sector ring-plane structure is effectively utilized the inner space of vertical shaft, structure arrangement simultaneously
Compact and space utilization rate is high；Furthermore the height of end sill according to vertical shaft become a mandarin the hydraulic jump form in flow Q and spiral board determine,
Ensure the flow velocity of the control lower stream that the sluices while water flow on spiral board smoothly flows out spiral board；The finally classification drop type eddy flow
The vertical exhaust pipe of intermediate arrangement in vertical shaft, circumferentially multi-stage annular spiral board is reached using the space in vertical shaft vertical direction
The purpose with energy dissipating is let out under water flow, has also taken into account the function of vertical shaft exhaust, and is taken full advantage of between vertical shaft and exhaust pipe
The confined space.
Detailed description of the invention
Fig. 1 is the first structural schematic diagram of the invention；
Fig. 2 is second of structural schematic diagram of the invention；
Fig. 3 is the Longitudinal cross section schematic of Fig. 1；
Fig. 4 is the cross-sectional view of Fig. 1；
Fig. 5 is the Longitudinal cross section schematic of Fig. 2；
Fig. 6 is the cross-sectional view of Fig. 2.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the classification drop type rotational flow silo suitable for deep layer tunnel system of the invention, including it is perpendicular
Well 1 and exhaust pipe 2, the vertical shaft 1 and drainpipe 2 are mutually arranged with one heart, between the inner wall of the vertical shaft 1 and the outer wall of exhaust pipe 2
Form an annular region.The upper end of the annular region is connected with inlet channel 3, if being equidistantly evenly equipped with from top to bottom in annular region
Dry spiral board 4, the spiral board of the sector ring-plane structure are effectively utilized the inner space of vertical shaft, structure characteristics of compact layout and space
Utilization rate is high.Above-mentioned annular region lower end is connected with tunnel access port 5 of regulating and storing.Using perpendicular in the classification drop type rotational flow silo
Multi-stage spiral-plate is arranged in well, using the turbulent diffusion of water cushion on the aeration effect of drop water flow and spiral board, under reduction
Sluice the flow velocity flowed, effectively inhibits the cavitation and cavitation erosion of vertical shaft regional area while improving vertical shaft effect of energy dissipation.
As shown in Figure 3 and Figure 4, spiral board 4 includes fan annular slab, the sector wrap angle α of the sector ring flat-plate for 180 °≤α≤
270°.The head end of the fan annular slab is vertically equipped with water fender 6；Wherein, it is connected positioned at the spiral board of the first floor 4 with inlet channel 3, often
The tail end of one layer of spiral board 4 connects on horizontal plane with the head end of next layer of spiral board 4, and is formed and divided in annular region
The rotating water stream channel of grade.Water flow in the classification drop type rotational flow silo flows into first floor spiral board from inlet channel, along eddy flow
Plate is flowed out from spiral board tail end to be flow on next layer of spiral board in the form freely to drop, forms a large amount of aerations, flow energy edge
It is classified in rotating water stream channel by energy dissipating.
The distance between adjacent upper and lower level spiral board 4 is h > (Q/1.5b)2/3, wherein Q is that vertical shaft becomes a mandarin flow, and b is rotation
Flowing plate width, b=(D-d1)/2, wherein D is vertical shaft diameter, d1For air slit diameter.The quantity of spiral board 4 is n=(H-h1-
h2)/h+1, wherein H is shaft depths, h1For the distance of first floor spiral board bottom to shaft top, h2For bottom spiral board bottom
To the distance of silo bottom.
As shown in Figure 5 and Figure 6, the tail end of spiral board 4 is vertically equipped with end sill 7, and the height of the end sill 7 is lower than water fender 6
Highly, preferred 7 height of end sill is the 0~1/3 of 6 height of water fender.The height h of water fender 64Lower than adjacent upper and lower level spiral board
The distance between 4 or the upper end of the water fender 6 abutted against with upper one layer of spiral board 4.The height of end sill becomes a mandarin stream according to vertical shaft
The hydraulic jump form measured in Q and spiral board determines, lets out under control while ensureing that the water flow on spiral board smoothly flows out spiral board
The flow velocity of water flow.
It is evenly equipped with several on exhaust pipe 2 of the invention and is located at for excluding the ventilation hole 8 of inner air, the ventilation hole 8
Between upper layer spiral board 4 and the water fender 6 of lower layer's spiral board 4.1 bottom of vertical shaft is formed with the water subfill 9 of buffering current scour.It should
It is classified the vertical exhaust pipe of intermediate arrangement in drop type rotational flow silo, circumferentially multi-stage annular spiral board, utilizes vertical shaft Vertical Square
Upward space, has achieved the purpose that let out under water flow and energy dissipating, has also taken into account the function of vertical shaft exhaust, and take full advantage of vertical shaft
The confined space between exhaust pipe；Especially suitable for depth big in municipal works, flow through shaft is vented and entered certainly and tunnel of regulating and storing
The deep layer tunnel system being directly connected to.
Classification drop type rotational flow silo of the invention is according to certain Large Deep tunnel system engineering design.It is fitted in embodiment
Deep layer tunnel system, wherein shaft depths be 55m, vertical shaft become a mandarin flow by maximum become a mandarin flow 80m3/s design, vertical shaft
Diameter is 15m, and tunnel diameter of regulating and storing is 9m.When water flow is directly fallen from vertical shaft upper layer, silo bottom maximum flow rate is left up to 25m/s
The right side, effect of energy dissipation and anti-cavitation ability are poor.
Embodiment 1
The structure that drop type rotational flow silo is classified in embodiment 1 arranges that as shown in figure 1, figure 3 and figure 4, which revolves
Flow through shaft includes vertical shaft 1, exhaust pipe 2, inlet channel 3, spiral board 4, tunnel access port 5 of regulating and storing, water fender 6, ventilation hole 8 and water cushion
Layer 9.Wherein 4 quantity of spiral board is 6.Inlet channel 3 is connected with the spiral board 4 for being located at the first floor, the tail end of each layer of spiral board 4
Connect on horizontal plane with the head end of next layer of spiral board 4, and is formed in annular region and be classified rotating water stream channel.Rotation
4 head end of flowing plate is vertically equipped with water fender 6, and 6 height of water fender is lower than distance between adjacent upper and lower level spiral board 4.On exhaust pipe 2
It is furnished with several and is located at the gear of upper layer spiral board 4 and lower layer's spiral board 4 for excluding the ventilation hole 8 of inner air, the ventilation hole 8
Between water plate 6, water subfill 9 is formed on 1 bottom of vertical shaft, and vertical shaft lower end is vertically connected with tunnel access port 5 of regulating and storing.
Related structural parameters in embodiment 1 are as follows:
3 width B of inlet channel is 6.0m, 2 diameter d of exhaust pipe1For 5.0m, the sector wrap angle α of spiral board 4 is 180 °, adjacent
4 distance h of upper and lower level spiral board is 8.0m, and 4 bottom of first floor spiral board is away from 1 distance from top h of vertical shaft1For 5.0m, 4 bottom of bottom spiral board
Portion is away from 1 distance from bottom h of vertical shaft2For 10.0m, 9 depth h of water subfill3For 0.5m, 6 height h of water fender4For 5.0m.
Embodiment 2
The structure that drop type rotational flow silo is classified in embodiment 2 arranges that as shown in figure 2, figure 5 and figure 6, which revolves
Flow through shaft includes vertical shaft 1, exhaust pipe 2, inlet channel 3, spiral board 4, tunnel access port 5 of regulating and storing, water fender 6, end sill 7, ventilation hole 8
With water subfill 9.Wherein 4 quantity of spiral board is 6.Inlet channel 3 is connected with the spiral board 4 for being located at the first floor, each layer of spiral board 4
Tail end connect on horizontal plane with the head end of next layer of spiral board 4, and formed in annular region and be classified rotating water flow
Channel.4 head end of spiral board is vertically equipped with water fender 6, and the tail end of spiral board 4 is vertically equipped with end sill 7.6 height of water fender is lower than phase
Distance between adjacent upper and lower level spiral board 4.Several are evenly equipped on exhaust pipe 2 for excluding the ventilation hole 8 of inner air, the ventilation
Hole 8 is located between upper layer spiral board 4 and the water fender 6 of lower layer's spiral board 4, and water subfill 9 is formed on 1 bottom of vertical shaft, and vertical shaft lower end is hung down
It is direct-connected to be connected to tunnel access port 5 of regulating and storing.
Related structural parameters in embodiment 2 are as follows:
3 width B of inlet channel is 6.0m, 2 diameter d of exhaust pipe1For 5.0m, the sector wrap angle α of spiral board 4 is 270 °, adjacent
4 distance h of upper and lower level spiral board is 8.0m, and 4 bottom of first floor spiral board is away from 1 distance from top h of vertical shaft1For 5.0m, 4 bottom of bottom spiral board
Portion is away from 1 distance from bottom h of vertical shaft2For 10.0m, 9 depth h of water subfill3For 0.5m, 6 height h of water fender4For 5.0m, 7 height of end sill is
1.0m。
Numerical simulation result shows that the maximum flow rate in 2 vertical shaft of embodiment 1 and embodiment is substantially reduced, and erects
Maximum flow rate in bottom water subfill in 14m/s or so, mean flow rate in 7m/s or so, the total energy dissipation rate of vertical shaft 75% with
On.Meanwhile the maximum flow rate overall control on each classification spiral board in 18m/s hereinafter, negative pressure region is less and negative pressure pressure not
Greatly, this is advantageous to the anti-cavitation cavitation corrosion ability for improving vertical shaft.It is let out under water flow in embodiment vertical shaft and air discharge is smooth, preferably
The requirement for meeting deep layer tunnel system and becoming a mandarin and being vented.
Claims (7)
1. a kind of classification drop type rotational flow silo suitable for deep layer tunnel system, it is characterised in that: perpendicular including what is be arranged with one heart
Well (1) and exhaust pipe (2) form an annular region between the inner wall of the vertical shaft (1) and the outer wall of exhaust pipe (2)；The annular
The upper end in region is connected with inlet channel (3), is equidistantly evenly equipped with several spiral boards (4) in annular region from top to bottom, annular
Region lower end is connected with regulate and store tunnel access port (5), and the spiral board (4) includes fan annular slab, and the head end of the fan annular slab hangs down
Directly it is equipped with water fender (6)；Wherein, it is connected positioned at the spiral board of the first floor (4) with inlet channel (3), the tail of each layer of spiral board (4)
End connects on horizontal plane with the head end of next layer of spiral board (4), and forms the rotating water flow of classification in annular region and lead to
Road, the distance between described adjacent upper and lower level spiral board (4) are h > (Q/1.5b)2/3, wherein Q is that vertical shaft becomes a mandarin flow, and b is rotation
Flowing plate width, b=(D-d1)/2, wherein D is vertical shaft diameter, d1For air slit diameter.
2. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
The quantity for stating spiral board (4) is n=(H-h1-h2)/h+1, wherein H is shaft depths, h1For first floor spiral board bottom to vertical shaft top
The distance in portion, h2For the distance of bottom spiral board bottom to silo bottom.
3. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
The sector wrap angle α for stating spiral board (4) is 180 °≤α≤270 °.
4. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
The tail end for stating spiral board (4) is vertically equipped with end sill (7), which is highly the 0~1/3 of water fender (6) height.
5. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
State the height of water fender (6) lower than the upper end of the distance between adjacent upper and lower level spiral board (4) or the water fender (6) with it is upper
One layer of spiral board (4) abuts against.
6. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
It states and is evenly equipped with several ventilation holes (8) for being used to exclude inner air on exhaust pipe (2), which is located at upper layer eddy flow
Between plate (4) and the water fender (6) of lower layer's spiral board (4).
7. the classification drop type rotational flow silo according to claim 1 suitable for deep layer tunnel system, it is characterised in that: institute
State the water subfill (9) that vertical shaft (1) bottom is formed with buffering current scour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710279976.0A CN107034978B (en) | 2017-04-26 | 2017-04-26 | Classification drop type rotational flow silo suitable for deep layer tunnel system |
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| CN201710279976.0A CN107034978B (en) | 2017-04-26 | 2017-04-26 | Classification drop type rotational flow silo suitable for deep layer tunnel system |
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| CN107034978B true CN107034978B (en) | 2019-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108978835A (en) * | 2018-07-30 | 2018-12-11 | 水利部杭州机械设计研究所 | Eddy flow cut-off equipment with blowdown pipe |
| CN112982643B (en) * | 2021-03-03 | 2022-09-13 | 青岛西海岸市政工程有限公司 | A step water blocking and regulation and storage system for municipal administration rainwater pipe net |
| CN113431164B (en) * | 2021-07-01 | 2022-03-11 | 四川大学 | Flow state self-adaptive vertical surface connection flow guide structure for conversion of falling flow and rotational flow vertical shaft |
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| CN205100176U (en) * | 2015-09-21 | 2016-03-23 | 珠江水利委员会珠江水利科学研究院 | Shaft energy absorber |
| CN105350631A (en) * | 2015-11-30 | 2016-02-24 | 广州市市政工程设计研究总院 | Folding plate type inflow vertical well system connected into deep tunnel drainage system |
| CN205242588U (en) * | 2015-12-09 | 2016-05-18 | 中铁第四勘察设计院集团有限公司 | Whirl shaft formula energy dissipation drop well |
| CN105604174B (en) * | 2015-12-19 | 2017-10-13 | 中国水利水电科学研究院 | A kind of annular folded plate energy dissipating drilled shaft |
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Inventor after: Wang Xiaosheng Inventor after: Sun Jingkang Inventor after: Ye Yuanxin Inventor after: Chen Yuling Inventor after: Zhou Chuntian Inventor after: Bai Zhanwei Inventor after: Feng Jiangang Inventor after: Zhang Rui Inventor after: Zhu Yanyue Inventor after: Wang Shufang Inventor before: Wang Xiaosheng Inventor before: Chen Yuling Inventor before: Zhou Chuntian Inventor before: Feng Jiangang Inventor before: Zhang Rui Inventor before: Wang Shufang Inventor before: Sun Jingkang |
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Effective date of registration: 20171016 Address after: 210098 Jiangsu City, Jiangning Province Development Zone, West Road, No. 8 Buddha Applicant after: HOHAI University Applicant after: SHANGHAI CHENGTOU WATER ENGINEERING PROJECT MANAGEMENT CO.,LTD. Address before: 210098 Jiangsu City, Jiangning Province Development Zone, West Road, No. 8 Buddha Applicant before: HOHAI University |
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