CN1814920A - Multi-hole-wall buffering mode - Google Patents
Multi-hole-wall buffering mode Download PDFInfo
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- CN1814920A CN1814920A CN 200610024483 CN200610024483A CN1814920A CN 1814920 A CN1814920 A CN 1814920A CN 200610024483 CN200610024483 CN 200610024483 CN 200610024483 A CN200610024483 A CN 200610024483A CN 1814920 A CN1814920 A CN 1814920A
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- tunnel
- window
- wall
- hole
- buffering
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Abstract
This invention relates to a porous wall buffer way used in underground tunnels including a tunnel and a buffer chamber at the end of the tunnel characterizing that at least one pressure-discharge window is set on the wall of the buffer chamber, the size of the window and the number depends on the window-opening rate, namely, the ratio of the area of the window and the area of the tunnel.
Description
Technical field
The present invention relates to tunnel-like, relate to a kind of subterranean tunnel multi-hole-wall buffering mode that is used for concretely.
Background technology
When the magnetic-levitation train of at a high speed operation when passing through Huangpu River tunnel because the tunnel easily causes multiple aerodynamics problem to the effect of contraction of air-flow around the train, when aerodynamic effect is strong, can cause noise at tunnel exit, surrounding environment is impacted.Therefore,, carry out the design of cross-river tunnel engineering portals, pressure release well pointedly,, just become important topic to control noise, to reduce the influence of train operation to surrounding environment by the research of micro-pressure wave.
In the seventies in 20th century, the Shinkansen train of Japan is brought up to 200km/h in the speed of a motor vehicle, the tunnel blockage ratio is 0.21 o'clock, and tangible pneumatic phenomenon has just appearred in the train access tunnel.Be head it off, the buffering canopy has been built in the Bingo tunnel of building in 1977, adret the Shinkansen (long 8900m) in the entrance.After this adret, northeast, on taked various countermeasures on the Shinkansen more.
Above-mentioned measure is merely able to play the effect of alleviation, the release poor effect, and can't deal with problems from root problem.
Summary of the invention
The objective of the invention is provides a kind of multi-hole-wall buffering mode according to above-mentioned the deficiencies in the prior art part, and this mode is offered the release window on the buffering locular wall, to control noise, to reduce the influence of vehicle operating to surrounding environment.
The object of the invention realizes being finished by following technical scheme:
A kind of multi-hole-wall buffering mode, the surge chamber that comprises the tunnel and be positioned at the place, tunnel face is characterized in that being provided with at least a release window on described buffering locular wall.
Described at least one release window is opened the top at the buffering locular wall.
The size of described window area and number of windows how much depend on the rate of the windowing size of window area and the ratio of tunnel area just.
The setting of window should along the buffering locular wall evenly, be symmetrical arranged.
Advantage of the present invention is, simple in structure, economical rationality, and easy construction is compared with fully closed buffer structure, and the surge chamber of band window has better antihypertensive effect.
Summary of drawings
Accompanying drawing 1 is this prior art structure trumpet type inlet breeze way structural representation;
Accompanying drawing 2 is structural representation of the present invention.
Concrete technical scheme
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-2, label 1-3 represents respectively: tunnel 1, surge chamber 2, release window 3.
The surge chamber 2 that present embodiment comprises tunnel 1 and is positioned at the place, tunnel face is provided with a penetrating release window 3 on the top wall of surge chamber 1.
Present embodiment is got surge chamber 2 entrance cross-section areas in conjunction with the section of burying secretly in the specific implementation, for the 1-2 of tunnel 1 sectional area doubly, the length of surge chamber 2 is one to three times of tunnel 1 hydraulic diameter, windows at surge chamber 2 tops, and the rate of the windowing ratio of tunnel area (window area with) is: 25%～40%.
Usually under the situation of the standard that satisfies microbarometric wave,, determine the size of the rate of windowing, determine the quantity that is provided with of the area size of release window 3 and window 3 again according to the size of the rate of windowing, reach the purpose of pressure release in conjunction with the engineering design condition.
The setting of window 3 should along the buffering locular wall evenly, be symmetrical arranged.
Present embodiment especially is suitable for for river railway tunnel more, because the relation of tunnel longitudinal gradient, the tunnel section of leading the way, secretly buries Duan Jun and is embedded in the soil, and the condition that does not exist both sides to window in conjunction with the engineering design condition, by windowing at top board, reaches the purpose of pressure release.
Claims (4)
1, a kind of multi-hole-wall buffering mode, the surge chamber that comprises the tunnel and be positioned at the place, tunnel face is characterized in that being provided with at least a release window on described buffering locular wall.
2, a kind of multi-hole-wall buffering mode according to claim 1, it is characterized in that described at least one release window open the buffering locular wall the top.
3, a kind of multi-hole-wall buffering mode according to claim 1, how much what it is characterized in that the size of described window area and number of windows depends on the rate of the windowing size of release window area and the ratio of tunnel area just.
4, a kind of multi-hole-wall buffering mode according to claim 1, it is characterized in that described window be provided with along the buffering locular wall evenly, be symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024483 CN1814920A (en) | 2006-03-08 | 2006-03-08 | Multi-hole-wall buffering mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024483 CN1814920A (en) | 2006-03-08 | 2006-03-08 | Multi-hole-wall buffering mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1814920A true CN1814920A (en) | 2006-08-09 |
Family
ID=36907263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610024483 Pending CN1814920A (en) | 2006-03-08 | 2006-03-08 | Multi-hole-wall buffering mode |
Country Status (1)
| Country | Link |
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| CN (1) | CN1814920A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057852A1 (en) * | 2007-10-31 | 2009-05-07 | Korea Railroad Research Institute | High-speed railway tunnel hood for reducing micro-pressure waves |
| CN102128036A (en) * | 2010-12-24 | 2011-07-20 | 西南交通大学 | Construction method of cross section-expanded loop type depressurizing portal for high-speed railway tunnel |
| CN103016024A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | Buffer structure of single-track tunnel portal of high-speed rail |
| CN105952468A (en) * | 2016-06-30 | 2016-09-21 | 中铁西南科学研究院有限公司 | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function |
-
2006
- 2006-03-08 CN CN 200610024483 patent/CN1814920A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057852A1 (en) * | 2007-10-31 | 2009-05-07 | Korea Railroad Research Institute | High-speed railway tunnel hood for reducing micro-pressure waves |
| CN102128036A (en) * | 2010-12-24 | 2011-07-20 | 西南交通大学 | Construction method of cross section-expanded loop type depressurizing portal for high-speed railway tunnel |
| CN103016024A (en) * | 2012-12-31 | 2013-04-03 | 中铁第四勘察设计院集团有限公司 | Buffer structure of single-track tunnel portal of high-speed rail |
| CN105952468A (en) * | 2016-06-30 | 2016-09-21 | 中铁西南科学研究院有限公司 | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |