CN108316940A - For alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged - Google Patents
For alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged Download PDFInfo
- Publication number
- CN108316940A CN108316940A CN201810020760.7A CN201810020760A CN108316940A CN 108316940 A CN108316940 A CN 108316940A CN 201810020760 A CN201810020760 A CN 201810020760A CN 108316940 A CN108316940 A CN 108316940A
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- pipeline
- air mass
- partition
- deep tunnel
- discharged
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- 241001672694 Citrus reticulata Species 0.000 claims abstract description 9
- 238000005192 partition Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 1
- 230000000116 mitigating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000013461 design Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 230000001914 calming effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pipe Accessories (AREA)
Abstract
It is the separator channels being mutually linked in deep tunnel and the setting of vertical shaft junction for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged that the present invention, which provides a kind of, which has linear type and shaped form interval.By the way that separator channels are arranged, by in deep tunnel pipeline due to vertical shaft quickly becomes a mandarin and what is generated have the big air mass of pressure to be divided into small air mass to be discharged from vertical shaft, effectively reduce the process for having the when of pressing big air mass to be discharged from vertical shaft that the breakoff phenomenon and mitigation of gases of vertical shaft inside energy-dissipating structure is acutely discharged in pipeline.Separator channels tail portion divergent shape is arranged so that the minute bubbles of dispersion are separated, and will not remerge to there is pressure air pocket, are ensured of minute bubbles discharge vertical shaft, improve the security performance of pipeline.Inventive pipeline structure is particularly suitable for using in deep tunnel pipeline configuration.
Description
Technical field
The present invention relates to municipal works technical fields, more particularly to a kind of new main tunnel of moldeed depth tunnel system and enter flow through shaft company
The structure connect is suitable for city depth tunnel system pipe network, avoids shaft structure caused by violent exhaust process occurs in flow through shaft
Malicious event.
Background technology
With the quickening of Urbanization in China, waterlogging that traditional cities construction mode is brought takes place frequently, runoff pollution aggravation,
The prominent rainwater problems such as water resource utility model, water ecological environment deterioration, it has also become restrict one of restrictive factor of social development.
Today that environmental bearing capacity is increasingly saturated, building " sponge city " becomes the necessity of current Chinese society development.For
It is special that down town city Water Surface Ratio is low, site coverage is high, underground utilities are intricate, densely populated and Safety of Flood Control pressure is big etc.
Point is aided with source diameter flow control using Large Deep tunnel of regulating and storing as backing engineering, becomes and solves urban waterlogging and just
The effective means of rain pollution.
In order to avoid the influence to facilities such as underground utilities and subways, deep layer tunnel outlet tunnel of regulating and storing in city is generally built
It is located in the ground at 40m-60m, when heavy rain occurs, a large amount of rainwater that ground is collected flow into subterranean tunnel by entering flow through shaft, deposit
Store up part rainwater.Deep tunnel system has emptied the middle water body of main tunnel before fine day or heavy rain, i.e., is air in tunnel.When
When heavy rain occurs, deep tunnel system starts, and flow will flow into main tunnel by entering flow through shaft.Since storm duration is short, intensity is larger,
A large amount of rainwater by it is multiple enter flow through shaft enter tunnel, portion of air is arranged when flow enters tunnel by vertical shaft in tunnel
Go out, but since multi-shaft becomes a mandarin simultaneously, the flow in tunnel has gradually been changed to pressure condition, more air mass meeting by pressure free current turn
It is trapped in tunnel, and with the variation of tunnel pressure at two ends, moves.As shown in Figure 1, when a large amount of trapped air mass are moved to
It when at vertical shaft, is discharged by vertical shaft, violent exhaust process occurs.But since water level of drilled shaft has increased to certain height this moment
Degree is higher than the cope level of main tunnel, and air mass rises from silo bottom, and vertical shaft water level inside is caused significantly to fluctuate, and may
Destruction can be generated to vertical shaft energy-dissipating structure, threaten the safety of entire deep tunnel system.For the exhausting problem of pipeline, existing technology
It is the place setting venthole in possible gas collection, but for deep tunnel system, which can not use, because main tunnel is in underground
At 40m-60m, two length about 2km or so entered between flow through shaft, thus can not be arranged above the main tunnel between vertical shaft logical
How gas measure mitigates the air mass harm at into flow through shaft, and deep tunnel system designs the problem faced at present.The present invention according to
The observation of motion feature and experiment of the air mass in pipeline, it is proposed that a kind of novel deep main tunnel of tunnel system and enter flow through shaft
The structure of connection solves violent exhausting problem at deep tunnel System Inflow vertical shaft, to vertical shaft internal junction when avoiding air mass discharge
It is destroyed caused by structure is possible.Thinking proposed by the present invention is not shown in any report in existing city depth tunnel system design and construction
It leads.
Invention content
Goal of the invention：In conventional pipe network water-carriage system, generally use venthole or air valve reduce delay in pipeline
Gas.But for city depth tunnel system, which can not use, because main tunnel is at the 40m-60m of underground, two become a mandarin it is perpendicular
Venting practices can not be arranged above the main tunnel between vertical shaft in length about 2km between well or so, even if having ready conditions setting,
Cost is also very high, thus for deep tunnel system, trapped air mass can only be discharged from entering from flow through shaft.When heavy rain, when flow is fast
When speed enters main tunnel, gas has little time to be discharged, and is enclosed in pipeline and is formed with the group of calming the anger, and with the variation of pressure in tunnel,
It is moved to and is discharged at flow through shaft, violent venting event occurs, the structure of vertical shaft is damaged.In order to overcome deep tunnel pipeline
This problem, a kind of observation of motion feature and experiment of the present invention according to air mass in pipeline, it is proposed that novel depth
The main tunnel of tunnel system and the structure for entering flow through shaft and connecting：It is set at tube wall at the top of the input end that flow through shaft is connect in deep tunnel pipeline with entering
Novel partition channel design is counted, forms the gas exhaust path of different length, and big air mass is divided into several minute bubbles, effectively
The violent venting event at into flow through shaft is slowed down, the structure to entering in flow through shaft is avoided to damage.
The present invention theoretical foundation be：Since gas density is smaller, either which kind of influent stream condition, when the deep main tunnel of tunnel system
When road is full of, trapped air mass must be moved at the top of pipeline.In addition, experimental observation, when trapped air mass is larger,
From entering, the process that flow through shaft is discharged is more violent, when air mass is smaller, hence it is evident that discharge process slows down, and enters the water level wave in flow through shaft
It is dynamic also smaller.In conjunction with above two parts feature, propose to be broken down into small-sized bubble close to when entering flow through shaft in trapped air mass,
And be discharged successively, violent venting event is slowed down, the destruction gently to entering flow through shaft is kept away.
Technical solution：It is in depth in order to solve the above technical problems, pipeline provided by the invention and entering flow through shaft connected structure
Tunnel pipeline is incited somebody to action with design novel partition channel design at the input end top tube wall that flow through shaft is connect is entered by the partition board of setting
That assembles in pipe has the big air mass of pressure to be separated into minute bubbles.By the arrangement, the minute bubbles after dispersion flow through speed when vertical shaft
Degree, time are different, and pressure big air mass will not be reassembled into when flowing through vertical shaft.
Specifically, the separator channels height is the 1/5-1/4 of caliber, air mass can all be carried out in this way from separator channels
Segmentation avoids air mass from passing through below separator channels.
Specifically, the partition board maximum length is 3-5 times of caliber.Septum plate length is set as different length.Intermediate bulkhead
Septum plate length for maximum length partition board, both sides reduces by 1/3 pipe diameter length successively.Different length setting, after ensureing segmentation
Minute bubbles no longer converge again each other.
Specifically, separator channels are arranged, it is spaced the 1/20-1/15 for caliber, tail portion is arranged as divergent shape.Setting is bent
Line and straight line alternate combinations are for 1/20-1/15, the long axis of caliber by the circular arc of radius and short axle of the 1/15-1/10 of caliber
The elliptic arc of the 1/8-1/3 of caliber is smoothly connected.Take difference when bubble flows through partition board, when outflow will not be converged again.
Specifically, separator channels width is the 1/10-1/8 of caliber, can big air mass be effectively divided into minute bubbles.
Further, in order to be conducive to air mass segmentation, partition board may be used splayed and be arranged on tube wall.
Further, in order to be conducive to air mass segmentation, different angles of inclination can be arranged in separator channels bottom plate from horizontal plane
（Angular range is at 15 ° -30 °）.
Advantageous effect：The separator channels being mutually linked are arranged in deep tunnel and vertical shaft junction in the present invention, and when occurring, city is sudden and violent
When rain, existing depth tunnel structural plane is when rapid, high volume becomes a mandarin near water, and original gas is compressed in pipeline and water becomes a mandarin the gas of carrying
Body is assembled at the top of pipeline, is finally discharged from vertical shaft.And in the present invention, the air mass of aggregation is before vertical shaft discharge, by band partition board
Linking channel, the group of calming the anger is divided into multiple small air mass, and mutually isolated in the channel, will not pool again each other
Big air mass is finally discharged from vertical shaft, shaft structure is protected not to be destroyed upwards.
Description of the drawings
Fig. 1 is traditional deep tunnel piping schematic.
Fig. 2 is a kind of new moldeed depth tunnel pipeline schematic three dimensional views.
Fig. 3 is a kind of new moldeed depth tunnel pipeline configuration front view.
Fig. 4 is a kind of new moldeed depth tunnel pipeline configuration vertical view.
Fig. 5 is a kind of new moldeed depth tunnel pipeline configuration left view.
Fig. 6 is a kind of new moldeed depth tunnel pipeline another kind floor structure front view.
Fig. 7 is a kind of deformation of Fig. 6；
Fig. 8 is the tonogram of two kinds of structural experiments.
Specific implementation mode
Two groups of experiments are carried out, are not provided with diaphragm structure in one group of horizontal pipe as shown in Figure 1, another group sets in horizontal pipe
Diaphragm structure as shown in Figure 2 is set, as shown in figure 3,
In use, by taking urban storm as an example, Fig. 1 is existing deep tunnel structure, and water is former in pipeline from when entering flow through shaft 1 and largely becoming a mandarin
Have that gas is compressed and the become a mandarin air mass 6 of carrying of water is assembled at the top of pipeline, is finally discharged from entering flow through shaft 1.
As shown in fig. 6, in the design structure, the air mass of aggregation is before entering the discharge of flow through shaft 1, by the pipe with partition board 2
When road, the group of calming the anger 6 is divided into multiple small air mass, and will not pool big air mass again each other, then is arranged from flow through shaft is entered
Go out, shaft structure is protected not to be destroyed.
It is the channel centered on pipeline symmetry axis that experiment, which uses 5 channels, No. 5 channels,.No. 3,4 channels are about pipeline pair
Claim axial symmetry distribution, as shown in figure 4, the baffle interval of curve and straight line arrange.In order to observe conveniently, test pipe uses
The organic glass pipe of 40cm diameters.Each channel is taken as 6cm, spacing 3cm.Channel uses two sections of curve forms, and every section is length
The oval a quarter section of axis 15cm, short axle 4cm.No. 5 duct heights are 9cm, and No. 3,4 are respectively 8cm, 8cm.Flow is from 1
It largely quickly becomes a mandarin at vertical shaft, with the pressure at pressure gauge test 1.It can be directly observed in the pipeline not taken measures,
Violent exhaust process occurs, pressure oscillation is big；In the pipeline to take measures, exhaust process is more gentle, and pressure oscillation is smaller.Examination
It tests the result shows that this new structure can preferably control the generation of violent exhaust process.
The data of outlet pressure are as shown in Figure 8, it is seen that structural pipe wall of the invention significantly reduces outlet pressure, can be with
Preferably control Vigorous gas discharge, is particularly suitable for using in deep tunnel pipeline configuration.
Embodiments of the present invention are described in detail above in association with attached drawing, but the present invention is not limited to described reality
Apply mode.For those of ordinary skill in the art, in the range of the principle of the present invention and technological thought, to these implementations
Mode carries out a variety of variations, modification, replacement and deformation and still falls in protection scope of the present invention.
Claims (8)
1. a kind of being used to alleviate the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged, including is arranged at the top of deep tunnel
First partition and shaft wall second partition, the first partition and second partition be connected with each other, the first partition
The tail portion of plate by curve and rectilinear(-al), is formed in divergent shape, the first partition and second partition between adjacent first partition
First partition channel forms second partition channel, the first partition channel and second partition channel between adjacent second partition
Be interconnected, for divide in deep tunnel pipeline due to vertical shaft quickly becomes a mandarin and what is generated have the big air mass of pressure, the big air mass to be divided
It is segmented into small air mass.
2. it is according to claim 1 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：The first partition channel height is the 1/5-1/4 of deep tunnel diameter.
3. it is according to claim 2 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：The first partition maximum length is 3-5 times of deep tunnel diameter.
4. it is according to claim 3 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：The length of adjacent first partition is different, and there is intermediate bulkhead maximum length, the septum plate length on both sides to reduce depth successively
The 1/3 of tunnel diameter.
5. it is according to claim 4 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：Adjacent first partition is spaced as the 1/20-1/15 of deep tunnel diameter.
6. it is according to claim 2 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：The width in first partition channel is the 1/10-1/8 of deep tunnel diameter.
7. it is according to claim 6 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：First partition is arranged in splayed on the inner wall of deep tunnel.
8. it is according to claim 5 for alleviating the pipeline and enter flow through shaft connected structure that deep tunnel trapped air mass is discharged,
It is characterized in that：There is angle between first partition channel base plate and the tangent line of deep tunnel inner wall, the range at inclination angle is at 15 ° -30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020760.7A CN108316940B (en) | 2018-01-10 | 2018-01-10 | For alleviating the pipeline of deep tunnel trapped air mass discharge and entering flow through shaft connected structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020760.7A CN108316940B (en) | 2018-01-10 | 2018-01-10 | For alleviating the pipeline of deep tunnel trapped air mass discharge and entering flow through shaft connected structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316940A true CN108316940A (en) | 2018-07-24 |
| CN108316940B CN108316940B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810020760.7A Active CN108316940B (en) | 2018-01-10 | 2018-01-10 | For alleviating the pipeline of deep tunnel trapped air mass discharge and entering flow through shaft connected structure |
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| Country | Link |
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| CN (1) | CN108316940B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094231A (en) * | 2019-04-03 | 2019-08-06 | 河海大学 | It is a kind of prevention and reduction deep layer regulate and store tunnel trapped air mass harm structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400713A (en) * | 2011-10-24 | 2012-04-04 | 广东华隧建设股份有限公司 | Method for auxiliary construction of water falling in tunnel by communicated channel |
| CN105909268A (en) * | 2016-06-29 | 2016-08-31 | 黄竟强 | Pre-stress combined well/tunnel module structure construction method and module structure |
| CN206092002U (en) * | 2016-10-12 | 2017-04-12 | 中铁西南科学研究院有限公司 | Tunnel bear building -up that reduces existing tunnel invert water pressure constructs |
| CN206530363U (en) * | 2016-08-30 | 2017-09-29 | 中铁二院工程集团有限责任公司 | One kind can the outer drainage system of maintenance type railway tunnel bottom structure |
-
2018
- 2018-01-10 CN CN201810020760.7A patent/CN108316940B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400713A (en) * | 2011-10-24 | 2012-04-04 | 广东华隧建设股份有限公司 | Method for auxiliary construction of water falling in tunnel by communicated channel |
| CN105909268A (en) * | 2016-06-29 | 2016-08-31 | 黄竟强 | Pre-stress combined well/tunnel module structure construction method and module structure |
| CN206530363U (en) * | 2016-08-30 | 2017-09-29 | 中铁二院工程集团有限责任公司 | One kind can the outer drainage system of maintenance type railway tunnel bottom structure |
| CN206092002U (en) * | 2016-10-12 | 2017-04-12 | 中铁西南科学研究院有限公司 | Tunnel bear building -up that reduces existing tunnel invert water pressure constructs |
Non-Patent Citations (2)
| Title |
|---|
| 孔令昌等: "用于数字化气体观测的脱气-集气装置研制与应用", 《地震地磁观测与研究》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094231A (en) * | 2019-04-03 | 2019-08-06 | 河海大学 | It is a kind of prevention and reduction deep layer regulate and store tunnel trapped air mass harm structure |
| CN110094231B (en) * | 2019-04-03 | 2024-02-23 | 河海大学 | Structure for preventing and reducing damage of detention air mass of deep regulation tunnel |
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| Publication number | Publication date |
|---|---|
| CN108316940B (en) | 2019-10-11 |
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