CN207093094U - Relief hole buffer structure at a kind of high speed subway tunnel portal - Google Patents
Relief hole buffer structure at a kind of high speed subway tunnel portal Download PDFInfo
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- CN207093094U CN207093094U CN201721033701.0U CN201721033701U CN207093094U CN 207093094 U CN207093094 U CN 207093094U CN 201721033701 U CN201721033701 U CN 201721033701U CN 207093094 U CN207093094 U CN 207093094U
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- relief hole
- right line
- high speed
- partition wall
- breeze way
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Abstract
The utility model discloses relief hole buffer structure at a kind of high speed subway tunnel portal, it is included in the range of the 40~60m of tunnel portal open excavation section of underground section and is divided to two sections top relief hole breeze way and left and right line partition wall relief hole breeze way are set respectively, open excavation section U-type groove lamina tecti (2) is provided with the top relief hole breeze way, the top of the open excavation section U-type groove lamina tecti (2) is provided with civil engineering structure cover plate, is uniformly provided with the civil engineering structure cover plate multiple with the extraneous lamina tecti relief hole (3) communicated；The left and right line partition wall relief hole breeze way is provided with left and right line mid-board (5), and multiple left and right line partition wall relief holes (6) are uniformly offered on the left and right line mid-board (5).Relief hole buffer structure at high speed subway tunnel portal of the present utility model, in-car external pressure fluctuation when train drives into underground section tunnel portal at a high speed can be reduced, meets occupant's pressure comfort requirement, substantially increases train operation efficiency.
Description
Technical field
The utility model belongs to Tunnel Engineering and Aerodynamics of High-speed Trains technical field, more particularly, to one kind
Relief hole buffer structure at high speed subway tunnel portal.
Background technology
With the development of economic society and technology, the speed of service of many city underground trains is also gradually stepping up：As extensively
No. 3 lines of state subway, No. 11 lines of Shenzhen Metro, Dongguan R2 lines etc., design highest running speed have all reached 120km/h.Subway arranges
Car is run in the underground space, when the speed of service is more than 100km/h, many problems negligible in low speed, in high speed
Just become gradually obvious.
When high speed subway train drives into tunnel at a high speed at the tunnel portal caused by interior pressure rate of change and pressure oscillation
Amplitude problems of too, the comfortableness taken to the security, economy and passenger of train operation and tunnel surrounding environment, station ring
There is harmful effect in border.Guangzhou Metro Line 3 initial operating stage, just often receives passenger's complaint, and reaction has ear-drum malaise symptoms, train
Driver's malaise symptoms are even more serious, or even the occupational diseases such as intermittent deafness occur, therefore when formally putting into effect, train is entering
When going out tunnel more employ " reduction of speed " operation, the segment distance of tunnel one to be entered afterwards ramp up again, after travel at the uniform speed, influence to arrange
The traffic efficiency of car, length of tunnel are then even more serious compared with temporary influence.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model is provided at a kind of high speed subway tunnel portal
Relief hole buffer structure, pressure release pore structure breeze way is set in the range of 40~60m of tunnel portal, alleviates train and drives into tunnel at a high speed
Occupant's pressure comfort requirement is met to in-car external pressure influence of fluctuations at tunnel portal during road, improves train passage
The purpose of efficiency.
To achieve these goals, the utility model provides relief hole buffer structure at a kind of high speed subway tunnel portal,
It is included in the range of the 40~60m of tunnel portal open excavation section of underground section and is divided to two sections top relief hole breeze way and left and right are set respectively
Line partition wall relief hole breeze way；
Wherein, the top relief hole breeze way is 20~30m one-tunnel two-tracks section, is provided with the one-tunnel two-tracks section bright
Section U-type groove lamina tecti is dug, the top of the open excavation section U-type groove lamina tecti is provided with civil engineering structure cover plate, the civil engineering structure cover plate
On be uniformly provided with it is multiple with the extraneous lamina tecti relief hole communicated；
The left and right line partition wall relief hole breeze way be 20~30m one-tunnel one-track section, the centre of the one-tunnel one-track section
Provided with left and right line mid-board, multiple left and right line partition wall relief holes are uniformly offered on the left and right line mid-board；
The lamina tecti relief hole and the left and right line partition wall relief hole drive into the subterranean region at a high speed for reducing train
Between tunnel portal when in-car external pressure fluctuation.
Further, upper surface of the lamina tecti relief hole along the top relief hole breeze way is in multiple rows of more column arrays
Arrangement, and the perforate gross area of the lamina tecti relief hole is more than or equal to the top relief hole breeze way tunnel cross-section area
40%.
Further, it is in multiple rows of more column array cloth that the left and right line partition wall relief hole is on duty along the left and right line mid-board
Put, and the perforate gross area of described left and right line partition wall relief hole is more than or equal to the left and right line partition wall relief hole breeze way tunnel
The 40% of cross-sectional area.
Further, the length of the top relief hole breeze way or left and right line partition wall relief hole breeze way is more than or equal to three
Times tunnel hydraulic diameter.
Further, the length of the top relief hole breeze way or left and right line partition wall relief hole breeze way is 20~30m.
Further, the lamina tecti relief hole and the left and right line partition wall relief hole are circular or square relief hole.
Further, the area of the lamina tecti relief hole and the left and right line partition wall relief hole is 0.4~0.5m2。
Further, first is provided between the top relief hole breeze way and the left and right line partition wall relief hole breeze way
Boundary.
Further, the second boundary is provided between the relief hole buffer structure and tunnel main body.
In general, by the contemplated above technical scheme of the utility model compared with prior art, can obtain down
Row beneficial effect：
(1) relief hole buffer structure at high speed subway tunnel portal of the present utility model, in underground section, tunnel portal is bright
Dig in the range of 40~60m of section and use relief hole structure type, car when train drives into underground section tunnel portal at a high speed can be reduced
External and internal pressure fluctuates, and meets occupant's pressure comfort requirement.
(2) relief hole buffer structure at high speed subway tunnel portal of the present utility model, simple in construction, easy to implement, solution
The problem of speed can not be too high when conventional train of having determined drives into underground running tunnel, substantially increases train operation efficiency, has
Significant economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the tunnel that relief hole buffer structure structure is related at a kind of high speed subway tunnel portal of the utility model embodiment
Floor map at hole；
Fig. 2 is that the vertical section of relief hole buffer structure structure at a kind of high speed subway tunnel portal of the utility model embodiment shows
It is intended to.
In all of the figs, same reference represents identical technical characteristic, is specially：1- undergrounds running tunnel enters
Mouthful (outlet), 2- open excavation section U-type grooves lamina tecti, 3- lamina tectis relief hole, 4- first are demarcated, 5- or so line mid-board, 6- or so
Line partition wall relief hole, 7- second demarcate.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.It is in addition, involved in each embodiment of the utility model disclosed below
As long as and to technical characteristic each other do not form conflict can be mutually combined.
Relief hole buffer structure at a kind of high speed subway tunnel portal of the utility model embodiment, in underground section Tunnel
Relief hole structure type is used in the range of 40~60m of mouth open excavation section, reaches alleviation train and drives into caused pressure at a high speed to car
The purpose of external and internal pressure influence of fluctuations, meet occupant's pressure comfort requirement.
It is divided to two sections of setting pressure release pore structure breeze ways in the range of the 40~60m of tunnel portal open excavation section of underground section.Buffering
Section first section be 20~30m one-tunnel two-tracks sections, the U-type groove structural top setting civil engineering structure cover plate in underground, and is uniformly opened up and room
The relief hole being interlinked to the outside；20~30m of secondary segment is one-tunnel one-track section, and relief hole, two-stage structure are uniformly opened up on the line partition wall of left and right
The percent opening of relief hole is not less than the 40% of tunnel cross-section area.
Fig. 1 is the tunnel that relief hole buffer structure structure is related at a kind of high speed subway tunnel portal of the utility model embodiment
Floor map at hole.Fig. 2 is relief hole buffer structure structure at a kind of high speed subway tunnel portal of the utility model embodiment
Schematic longitudinal section.As depicted in figs. 1 and 2, relief hole buffer structure bag at high speed subway tunnel portal of the present utility model
Include in underground section tunnel portal (outlet) 1, open excavation section U-type groove lamina tecti 2, the boundary of lamina tecti relief hole 3, first 4, left and right line
Partition wall 5, the boundary of left and right line partition wall relief hole 6 and second 7.
L1, L2 length as shown in Figure 1 is not less than 3 times of tunnel hydraulic diameters, and typically desirable 20~30m, 3 and 6 can be used
Circular or square relief hole, single hole area about 0.4~0.5m2, lamina tecti relief hole 3 is upper along the top relief hole breeze way
End face is arranged in multiple rows of more column arrays, for example as shown in figure 1, being arranged using the array of 4 rows 12 row, and the lamina tecti relief hole
The 3 perforate gross area is more than or equal to the 40% of the top relief hole breeze way tunnel cross-section area.
Left and right line partition wall relief hole 6 is arranged along the left and right line mid-board 5 is on duty in multiple rows of more column arrays, for example such as Fig. 2
It is shown, arranged using the array of 3 rows 12 row, and the perforate gross area of described left and right line partition wall relief hole 6 is more than or equal to described
The 40% of left and right line partition wall relief hole breeze way tunnel cross-section area.
In preferred embodiment of the present utility model, when speed is 120km/h, main body tunnel clearance cross-sectional area is
26m2, hydraulic diameter is about that 6m, L1 and L2 take 30m, and relief hole uses the length of side, and for 0.7m square holes, percent opening takes 40%, then L1 sections
Structure lamina tecti perforate total quantity (perforate summation above the line of left and right) should be not less than 44, and the number of openings is not small on L2 section mid-boards
In 22, perforate is evenly arranged.
Without reduction of speed when the train run at high speed outside hole drives into underground running tunnel, the relief hole breeze way of tunnel portal can
Reduce the pressure change rate and pressure oscillation amplitude when train drives at a high speed, meet the purpose of personnel's comfortableness requirement.
Relief hole buffer structure at high speed subway tunnel portal of the present utility model, train can be reduced and drive into underground at a high speed
In-car external pressure fluctuation during running tunnel hole, meet occupant's pressure comfort requirement, solve conventional train and drive into ground
The problem of speed can not be too high during lower running tunnel, operational efficiency is improved, there is significant economic benefit and social benefit.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
For limiting the utility model, any modification of all made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within the scope of protection of the utility model.
Claims (9)
1. relief hole buffer structure at a kind of high speed subway tunnel portal, it is characterised in that be included in underground section tunnel portal
It is divided to two sections top relief hole breeze way and left and right line partition wall relief hole breeze way are set respectively in the range of 40~60m of open excavation section；
Wherein, the top relief hole breeze way is 20~30m one-tunnel two-tracks section, and open excavation section is provided with the one-tunnel two-tracks section
U-type groove lamina tecti (2), the top of the open excavation section U-type groove lamina tecti (2) are provided with civil engineering structure cover plate, the civil engineering structure lid
It is uniformly provided with plate multiple with the extraneous lamina tecti relief hole (3) communicated；
The left and right line partition wall relief hole breeze way is 20~30m one-tunnel one-track section, and the centre of the one-tunnel one-track section is provided with
Left and right line mid-board (5), multiple left and right line partition wall relief holes (6) are uniformly offered on the left and right line mid-board (5)；
The lamina tecti relief hole (3) and the left and right line partition wall relief hole (6) drive into the underground at a high speed for reducing train
In-car external pressure fluctuation during running tunnel hole.
2. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 1, it is characterised in that described
Upper surface of the lamina tecti relief hole (3) along the top relief hole breeze way is arranged in multiple rows of more column arrays, and the lamina tecti
The perforate gross area of relief hole (3) is more than or equal to the 40% of the top relief hole breeze way tunnel cross-section area.
3. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 1, it is characterised in that described
Left and right line partition wall relief hole (6) is arranged along the left and right line mid-board (5) is on duty in multiple rows of more column arrays, and described left and right line
The perforate gross area of partition wall relief hole (6) is more than or equal to the left and right line partition wall relief hole breeze way tunnel cross-section area
40%.
4. relief hole buffer structure at a kind of high speed subway tunnel portal according to Claims 2 or 3, it is characterised in that
The length of the top relief hole breeze way or left and right line partition wall relief hole breeze way is more than or equal to three times tunnel hydraulic diameter.
5. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 4, it is characterised in that described
The length of top relief hole breeze way or left and right line partition wall relief hole breeze way is 20~30m.
6. relief hole buffer structure at a kind of high speed subway tunnel portal according to Claims 2 or 3, it is characterised in that
The lamina tecti relief hole (3) and the left and right line partition wall relief hole (6) are circular or square relief hole.
7. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 6, it is characterised in that described
Lamina tecti relief hole (3) and the area of the left and right line partition wall relief hole (6) are 0.4~0.5m2。
8. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 1, it is characterised in that described
The first boundary (4) is provided between top relief hole breeze way and the left and right line partition wall relief hole breeze way.
9. relief hole buffer structure at a kind of high speed subway tunnel portal according to claim 1, it is characterised in that described
The second boundary (7) is provided between relief hole buffer structure and tunnel main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033701.0U CN207093094U (en) | 2017-08-17 | 2017-08-17 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033701.0U CN207093094U (en) | 2017-08-17 | 2017-08-17 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093094U true CN207093094U (en) | 2018-03-13 |
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ID=61541621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721033701.0U Active CN207093094U (en) | 2017-08-17 | 2017-08-17 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
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| Country | Link |
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| CN (1) | CN207093094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387111A (en) * | 2017-08-17 | 2017-11-24 | 中铁第四勘察设计院集团有限公司 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
| CN111828441A (en) * | 2020-07-28 | 2020-10-27 | 温州泰乐维工程设计有限公司 | Air oscillation controller for railway tunnel |
-
2017
- 2017-08-17 CN CN201721033701.0U patent/CN207093094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387111A (en) * | 2017-08-17 | 2017-11-24 | 中铁第四勘察设计院集团有限公司 | Relief hole buffer structure at a kind of high speed subway tunnel portal |
| CN111828441A (en) * | 2020-07-28 | 2020-10-27 | 温州泰乐维工程设计有限公司 | Air oscillation controller for railway tunnel |
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