JPH04109000A - Tunnel micro barometric wave reducing device - Google Patents
Tunnel micro barometric wave reducing deviceInfo
- Publication number
- JPH04109000A JPH04109000A JP22604190A JP22604190A JPH04109000A JP H04109000 A JPH04109000 A JP H04109000A JP 22604190 A JP22604190 A JP 22604190A JP 22604190 A JP22604190 A JP 22604190A JP H04109000 A JPH04109000 A JP H04109000A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- hood
- micro
- exit
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000006835 compression Effects 0.000 description 24
- 238000007906 compression Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000007983 food acid Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は新幹線等の高速列車がトンネル内に高速で進入
した場合、圧縮波による発生する微気圧波を低減するト
ンネル微気圧波低減装置に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a tunnel micro-pressure wave reduction device that reduces micro-pressure waves generated by compression waves when a high-speed train such as a Shinkansen enters a tunnel at high speed. It is something.
第３図に示すように、新幹線等の高速列車がトンネルＴ
内に高速で進入した場合、圧縮波Ｗが発生し、この圧縮
波が列車Ｔｒより速いスピード（音速）で伝搬していく
。そしてこれが衝撃波となって反対側のトンネル出口か
ら１Ｆカン、という音と共に微気圧波Ｐ ＋ 、 Ｐ
ｚを発生きせる。この微気圧波Ｐ １． Ｐ ｔの音波
によりトンネル出口付近の住宅や建物のガラス等をガタ
ガタと揺らし、公害問題となる。この対策として、従来
トンネル出口に開口孔付フードを取付けてこの微気圧波
を減衰させている。As shown in Figure 3, high-speed trains such as the Shinkansen pass through the tunnel T.
When the train enters the train at high speed, a compression wave W is generated, and this compression wave propagates at a faster speed (sonic speed) than the train Tr. This becomes a shock wave, and from the tunnel exit on the opposite side, micro-pressure waves P + , P are generated along with the sound of a 1F bang.
Generate z. This micro-pressure wave P1. The sound waves of Pt rattle the glass of houses and buildings near the tunnel exit, causing a pollution problem. As a countermeasure to this problem, conventionally, a hood with an opening is attached to the tunnel exit to attenuate these micropressure waves.
上記トンネル出口に開口孔付フードを設ける手法は、列
車の速度が２２０ｋｍ／ｈまでは微気圧波の減衰には充
分な効果があるが、それ以上の高速、例えば２２０ｋｍ
／ｈの高速になるとその効果は徐々に無くなる。そこで
列車を２２０ｋｍ／ｈ以上の高速で走らせる場合に、ト
ンネル出口での微気圧波を低減させる有効な手段が必要
であるが、従来このような高速での微気圧波を有効に低
ｇされる微気圧波低減装置はなかった。The above-mentioned method of providing a hood with an opening at the tunnel exit has a sufficient effect in attenuating micropressure waves up to a train speed of 220 km/h, but at higher speeds, e.g. 220 km/h.
As the speed increases to /h, the effect gradually disappears. Therefore, when trains run at high speeds of 220 km/h or higher, an effective means to reduce micro-pressure waves at the tunnel exit is required. There was no micropressure wave reduction device available.
本発明は上述の点に鑑みてなされたもので、トンネル出
口に開口孔付フードを設ける微気圧波低減手段では効果
の薄い程の高速で走行する列車がトンネル内に進入した
場合でも、トンネル出口での微気圧波を有効に減衰され
るトンネル微気圧波低減装置を提供することを目的とす
る。The present invention has been made in view of the above-mentioned points, and even when a train traveling at such high speed enters a tunnel that the micro-pressure wave reducing means provided with a hood with an opening at the tunnel exit has little effect, the tunnel exit An object of the present invention is to provide a tunnel micro-pressure wave reduction device that can effectively attenuate micro-pressure waves in a tunnel.
上記課題を解決するためトンネル微気圧波低減装置を下
記のように構成した。In order to solve the above problems, a tunnel micropressure wave reduction device was constructed as follows.
トンネル出口近傍に開口孔付のフードを設けると共に、
該フード酸を略垂直方向に区分するようにエアーカーテ
ンを所定の間隔をおいて多層に設け、トンネルに列車が
突入した場合に反対側出口より発生ずる微気圧波を吸収
させるようにした。In addition to installing a hood with an opening near the tunnel exit,
Air curtains were provided in multiple layers at predetermined intervals to divide the food acid in a substantially vertical direction, and to absorb micropressure waves generated from the opposite exit when a train entered the tunnel.
また、トンネル出口近傍にフードを設けると共に、該フ
ード酸を略垂直づテ向に区分するようにエアーカーテン
を所定の間隔をおいて多層に設け、該エアーカーテンと
エアーカーテンにより区分されたフード内を真空ブロワ
−で吸引し負圧とし、該負圧と前記微気圧波の正圧を干
渉させて該微気圧波を低ｇさせるようにした。In addition, a hood is provided near the tunnel exit, and air curtains are provided in multiple layers at predetermined intervals so as to divide the hood acid approximately vertically. was suctioned with a vacuum blower to create a negative pressure, and the negative pressure interfered with the positive pressure of the micro-pressure wave to lower the g of the micro-pressure wave.
第３図に示すように、列車が高速でトンネルＴ内に突入
することによって生じた圧縮波Ｗは列車Ｔｒより速いス
ピード（音速）で伝搬してくる。As shown in FIG. 3, the compression wave W generated by the train rushing into the tunnel T at high speed propagates at a faster speed (sonic speed) than the train Tr.
上記のようにトンネル出口近傍に開口孔付のフドを設け
ると共に、該フード酸を略垂直方向に区分するようにエ
アーカーテンを設けることにより、この圧縮波の前面に
抵抗を与え、圧縮波のピークを開口孔より逃がして、圧
縮波による微気圧波を減少させる。As mentioned above, by providing a hood with an opening near the tunnel exit and by providing an air curtain to divide the hood acid in a substantially vertical direction, resistance is applied to the front of this compression wave, and the peak of the compression wave is is released through the opening to reduce micropressure waves caused by compression waves.
また、エアーカーテンとエアーカーテンの間を真空ブロ
ワ−で吸引し、負圧にすることにより、この負圧と圧縮
波の正圧とが干渉し微気圧波を減少させる。Further, by drawing suction between the air curtains with a vacuum blower to create a negative pressure, this negative pressure interferes with the positive pressure of the compression wave, thereby reducing the micropressure wave.
以下、本発明の実施例を図面に基ついて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係るトンネル微気圧波低減装置の構造
を示す図で、同図（ａ）はトンネル出口近傍の縦断面図
、同図（ｂ）はトンネル出口近傍の正面断面図である。FIG. 1 is a diagram showing the structure of a tunnel micropressure wave reduction device according to the present invention, in which (a) is a longitudinal sectional view near the tunnel exit, and FIG. 1(b) is a front sectional view near the tunnel exit. .
図示するようにトンネル１の出口１ａの近傍にトンネル
断面をカバーする断面を有するフード２を設ける。該フ
ード２の天井には該フード２を所定間隔でエアーカーテ
ン４により区分するためのエアーカーテン用送風機５が
設けられている。また、フード２の天井のエアーカーテ
ン用送風機５とエアーカーテン用送風機５の間には開口
孔３が設けられている。As shown in the figure, a hood 2 having a cross section that covers the tunnel cross section is provided near the exit la of the tunnel 1. An air curtain blower 5 is provided on the ceiling of the hood 2 to divide the hood 2 into sections with air curtains 4 at predetermined intervals. Further, an opening hole 3 is provided between the air curtain blower 5 on the ceiling of the hood 2.
上記構造のトンネル微気圧波低減装置において、高速列
車がトンネル入口からトンネル１内に突入すると、第３
図に示すように圧縮波Ｗが発生し、該圧縮波Ｗは列車Ｔ
ｒより速いスピード（音速）で伝搬し、トンネル出口近
傍に設けたフードク
２内に侵入する。該フード２の天井から下に向かってエ
アーカーテン用送風機５から噴出される空気によりエア
ーカーテン４が形成されており、トンネル１からの圧縮
波Ｗの前面はこのエアーカーテン４に衝突し、その抵抗
により圧縮波Ｗのピークが開口孔３より逃げるから、圧
縮波Ｗによる微気圧波が減少する。また、図示するよう
に、エアーカーテン４をフード２を略垂直方向に区分す
るように所定の間隔をおいて多層に設けることにより、
圧縮波のピークが開口孔３から徐々に逃げるから、圧縮
波の正圧は徐々に減衰し、微気圧波が減少する。In the tunnel micro-pressure wave reduction device having the above structure, when a high-speed train enters tunnel 1 from the tunnel entrance, the third
As shown in the figure, a compression wave W is generated, and the compression wave W is generated by the train T.
It propagates at a faster speed (sonic speed) than r, and invades the food dock 2 installed near the tunnel exit. An air curtain 4 is formed by air blown downward from the ceiling of the hood 2 from an air curtain blower 5, and the front surface of the compression wave W from the tunnel 1 collides with this air curtain 4, and its resistance As a result, the peak of the compression wave W escapes from the aperture 3, so that the micro-pressure wave due to the compression wave W is reduced. Furthermore, as shown in the figure, by providing the air curtains 4 in multiple layers at predetermined intervals so as to divide the hood 2 in a substantially vertical direction,
Since the peak of the compression wave gradually escapes from the aperture 3, the positive pressure of the compression wave gradually attenuates, and the micropressure wave decreases.
第２図は本発明に係る他のトンネル微気圧波低減装置の
構造を示す図で、同図（ａ）はトンネル出口近傍の縦断
面図、同図（ｂ）はトンネル出口近傍の正面断面図であ
る。図示するようにトンネル１の出口１ａの近傍にフー
ド２を設け、該フード２の天井には所定間隔でエアーカ
ーテン用送風機５が設けられている点は第１図の場合と
同じである。本トンネル微気圧波低減装置が第１図のそ
れと異なる魚は、真空プロワ−６を設け、フード２のエ
アーカーテン４とエアーカーテン４で区分した部分を負
圧にしておく点である。FIG. 2 is a diagram showing the structure of another tunnel micropressure wave reduction device according to the present invention, in which (a) is a longitudinal cross-sectional view near the tunnel exit, and (b) is a front cross-sectional view near the tunnel exit. It is. As shown in the figure, a hood 2 is provided near the exit 1a of the tunnel 1, and air curtain blowers 5 are provided at predetermined intervals on the ceiling of the hood 2, as in the case of FIG. 1. The difference between this tunnel micro-pressure wave reducing device and that shown in FIG. 1 is that a vacuum blower 6 is provided and a portion of the hood 2 divided by the air curtain 4 is kept under negative pressure.
第２図に示す構造のトンネル微気圧波低減装置において
、高速列車がトンネル入口からトンネル１内に突入する
と、第３図に示すように圧縮波が発生し、該圧縮波Ｗは
列車Ｔｒより速いスピードで伝搬し、トンネル出口近傍
に設けたフード２内に侵入する。この時、圧縮波Ｗの正
圧とエアーカーテン４とエアーカーテン４で区分された
部分の負圧とが干渉し、微気圧波Ｗが減衰する。また、
図示するように、エアーカーテン４をフード２を略垂直
方向に区分するように所定の間隔をおいて多層に設け、
エアーカーテン４で区分される部分を複数とすることに
より、前記正圧と負圧による干渉が複数段となり、圧縮
波の正圧は徐々に減衰し、微気圧波が減少する。In the tunnel micro-pressure wave reduction device having the structure shown in Fig. 2, when a high-speed train enters the tunnel 1 from the tunnel entrance, a compression wave is generated as shown in Fig. 3, and the compression wave W is faster than the train Tr. It propagates at high speed and invades the hood 2 installed near the tunnel exit. At this time, the positive pressure of the compression wave W and the negative pressure of the air curtain 4 and the portion divided by the air curtain 4 interfere, and the micropressure wave W is attenuated. Also,
As shown in the figure, air curtains 4 are provided in multiple layers at predetermined intervals so as to divide the hood 2 in a substantially vertical direction.
By having a plurality of sections divided by the air curtain 4, the interference between the positive pressure and the negative pressure becomes multiple stages, the positive pressure of the compression wave is gradually attenuated, and the micro-pressure wave is reduced.
なお、エアーカーテン用送風機５及び真空プロワ−６は
列車がトンネル１に入る前より運転して待機しておき、
圧縮波がフード２内に到達し、列車がフード２を通過す
る前に停止するように、エアーカーテン用送風機５及び
真空ブロワ−６を制御する制御装置（図示せず）を設げ
、エアーカーテン及び負圧の形成をこのように制御する
ことにより、列車に直接エアーカーテン４の風を当てな
いように制御できるから、エアーカーテン４の風による
衝撃を列車に与えないようにすることが可能となる。Note that the air curtain blower 5 and the vacuum blower 6 are operated and on standby before the train enters the tunnel 1.
A control device (not shown) is provided to control the air curtain blower 5 and the vacuum blower 6 so that the compression waves reach the inside of the hood 2 and stop before the train passes through the hood 2. By controlling the formation of the negative pressure in this way, it is possible to prevent the wind from the air curtain 4 from directly hitting the train, so it is possible to prevent the train from being affected by the wind from the air curtain 4. Become.
以上説明したように本発明によれば、下記のような優れ
た効果が得られる。As explained above, according to the present invention, the following excellent effects can be obtained.
（１） ｌ−ンネル出口近傍に開口孔付のフードを設
けると共に、該フード該を略垂直方向に区分するように
エアーカーテンを設けることにより、トンネル内に列車
が突入することにより発生ずる圧縮波の前面に抵抗を与
え、圧縮波のピークを開口孔より逃がして、圧縮波によ
る微気圧波を減少させることができる。(1) By providing a hood with an opening near the tunnel exit and providing an air curtain to divide the hood approximately vertically, compression waves generated when a train rushes into the tunnel can be prevented. By applying resistance to the front surface of the aperture, the peak of the compression wave can escape through the aperture, thereby reducing the micropressure wave caused by the compression wave.
（２）また、エアーカーテンとエアーカーテンの間を真
空ブロワ−で吸引し、負圧にすることによす、この負圧
と圧縮波の正圧とが干渉し微気圧波を減少させることが
できる。(2) Also, by creating a negative pressure by drawing suction between the air curtains with a vacuum blower, this negative pressure and the positive pressure of the compression wave can interfere and reduce the micropressure wave. can.
第１図は本発明に係るトンネル微気圧波低減装置の構造
を示す図で、同図（ａ）はトンネル出口近傍の縦断面図
、同図（ｂ）はトンネル出口近傍の正面断面図、第２図
は本発明に係る他のトンネル微気圧波低減装置の構造を
示す図で、同図（ａ）はトンネル出口近傍の縦断面図、
同図（ｂ）はトンネル出口近傍の正面断面図、第３図は
列車がトンネルに突入することにより微気圧波が発生す
るメカニズムを説明するための図である。
図中、１・・・トンネル、２・・・・フード、３・・・
・開［１孔、４・・・・エアーカーテン、６・・・・真
空フロワー
特許出願人 株式会社荏原製作所FIG. 1 is a diagram showing the structure of a tunnel micro-pressure wave reduction device according to the present invention, in which FIG. 1(a) is a longitudinal sectional view near the tunnel exit, FIG. 1(b) is a front sectional view near the tunnel exit, and FIG. Fig. 2 is a diagram showing the structure of another tunnel micropressure wave reduction device according to the present invention, and Fig. 2 (a) is a longitudinal cross-sectional view near the tunnel exit;
FIG. 3B is a front cross-sectional view of the vicinity of the tunnel exit, and FIG. 3 is a diagram for explaining the mechanism by which micropressure waves are generated when a train enters a tunnel. In the diagram, 1... tunnel, 2... hood, 3...
・Open [1 hole, 4...Air curtain, 6...Vacuum floor Patent applicant Ebara Corporation
Claims (2)
共に、該フードを略垂直方向に区分するようにエアーカ
ーテンを所定の間隔をおいて多層に設け、トンネルに列
車が突入した場合に反対側出口より発生する微気圧波を
吸収させることを特徴とするトンネル微気圧波低減装置
。(1) A hood with openings is provided near the tunnel exit, and air curtains are provided in multiple layers at predetermined intervals so as to divide the hood approximately vertically, so that when a train enters the tunnel, the opposite side A tunnel micro-pressure wave reduction device characterized by absorbing micro-pressure waves generated from the exit.
ード該を略垂直方向に区分するようにエアーカーテンを
所定の間隔をおいて多層に設け、該エアーカーテンとエ
アーカーテンにより区分されたフード内を真空ブロワー
で吸引し負圧とし、該負圧と前記微気圧波の正圧を干渉
させて該微気圧波を低減させることを特徴とするトンネ
ル微気圧波低減装置。(2) A hood is provided near the tunnel exit, and air curtains are provided in multiple layers at predetermined intervals so as to divide the hood in a substantially vertical direction, and the interior of the hood divided by the air curtains is A tunnel micro-pressure wave reducing device characterized in that a vacuum blower suctions the micro-pressure waves to create a negative pressure, and causes the negative pressure to interfere with the positive pressure of the micro-pressure waves to reduce the micro-pressure waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22604190A JPH0689637B2 (en) | 1990-08-28 | 1990-08-28 | Tunnel micro-pressure wave reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22604190A JPH0689637B2 (en) | 1990-08-28 | 1990-08-28 | Tunnel micro-pressure wave reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04109000A true JPH04109000A (en) | 1992-04-09 |
| JPH0689637B2 JPH0689637B2 (en) | 1994-11-09 |
Family
ID=16838855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22604190A Expired - Lifetime JPH0689637B2 (en) | 1990-08-28 | 1990-08-28 | Tunnel micro-pressure wave reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0689637B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101455761B1 (en) * | 2013-04-12 | 2014-11-03 | 한국철도기술연구원 | Hood structure and system for reducing tunnel micro pressure wave using the same |
| CN113320551A (en) * | 2021-07-19 | 2021-08-31 | 中铁二院工程集团有限责任公司 | Pneumatic load control method and system for platform shielding door of railway underground station |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101455764B1 (en) * | 2013-04-16 | 2014-11-03 | 한국철도기술연구원 | System for reducing tunel micro pressure wave and method for reducing tunel micro pressure wave using the same |
-
1990
- 1990-08-28 JP JP22604190A patent/JPH0689637B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101455761B1 (en) * | 2013-04-12 | 2014-11-03 | 한국철도기술연구원 | Hood structure and system for reducing tunnel micro pressure wave using the same |
| CN113320551A (en) * | 2021-07-19 | 2021-08-31 | 中铁二院工程集团有限责任公司 | Pneumatic load control method and system for platform shielding door of railway underground station |
| CN113320551B (en) * | 2021-07-19 | 2022-08-12 | 中铁二院工程集团有限责任公司 | Pneumatic load control method and system for platform shielding door of railway underground station |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0689637B2 (en) | 1994-11-09 |
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