CN105952468A - High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function - Google Patents
High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function Download PDFInfo
- Publication number
- CN105952468A CN105952468A CN201610511063.2A CN201610511063A CN105952468A CN 105952468 A CN105952468 A CN 105952468A CN 201610511063 A CN201610511063 A CN 201610511063A CN 105952468 A CN105952468 A CN 105952468A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- open cut
- cut tunnel
- cross
- microbarometric 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.)
- Pending
Links
- 230000000116 mitigating effect Effects 0.000 claims description 14
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000034 method Methods 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a high-speed railway tunnel connecting open-cut tunnel with a micro-pressure wave alleviation function. The cross section of the connecting open-cut tunnel is greater than the cross section of a front section and a rear section of tunnel connected with the connecting open-cut tunnel, and the cross section of the connecting open-cut tunnel is in a polygonal shape; and a plurality of groups of vertical openings are symmetrically formed in two side walls of the connecting open-cut tunnel. By giving the optimum cross section area, an opening position and a size of an open hole of the connecting open-cut tunnel, the micro-pressure wave at the opening of the tunnel can be maximally alleviated; and the open-cut tunnel can be used as a beneficial supplement for a conventional micro-pressure wave alleviation measure such as a tunnel inlet buffer structure and an inner tunnel auxiliary pit, and also has economy.
Description
Technical field
The present invention relates to Railway Tunnel design field, a kind of height with microbarometric wave mitigation capability
Speed railway tunnel connects open cut tunnel.
Background technology
It is steep that slope is faced upward at Southwestern China Mountain Tunnels hole, is mostly " V " type cheuch, tunnel immediately adjacent to bridge, open-wire line spacing between tunnel
Segment length is the least, the frequent access tunnel of train, and car internal gas pressure frequently changes, and " black hole " and " white hole " effect is violent so that
Comfort of passenger reduces, and tunnel's entrance and exit is domatic has rockfall to be distributed more, affects traffic safety, therefore when Tunnel Design
How relatively will be connected by open cut tunnel by Xiao Ming's distance between centers of tracks tunnel group, both to have can guarantee that the comfort level of passenger inside the vehicle, it is also possible to effectively avoid danger
The threat to vehicle in use of the rock falling rocks.Tunnel group defines a relatively long tunnel by open cut tunnel after being connected, according to both at home and abroad
Scholar's research, the train of speed per hour 300km is easily generated microbarometric wave in the tunnel of a length of about 8km and intensifies phenomenon, namely
Say that train its barometric wave wavefront gradients produced behind the tunnel entering this length becomes larger when can propagate in tunnel therewith,
In this case, the tunnel originally meeting microbarometric wave national standard may exceed the corresponding of national regulation after open cut tunnel connects
Index.
The size of microbarometric wave and compressional wave arrive the pressure gradient (pressure differential in the unit interval) during tunnel exit
It is directly proportional, by controlling barometric gradient during compressional wave arrival tunnel exit, it is possible to achieve slow down the purpose of microbarometric wave intensity.
Generally, Railway Tunnel is that the measure that alleviation microbarometric wave is taked has following several:
(1) outside Tunnel, build the buffer structure of uiform section top or side mouth；
(2) outside Tunnel, build section expansion type or broadening formation buffer structure；
(3) in tunnel, the decompression configuration such as vertical shaft, transverse passage-way, service gallery are built.
These tunnel portal affiliated facilities have played bigger effect in terms of alleviating hole microbarometric wave, but there is also as follows
Not enough: the action principle of hole buffer structure is to enter tunnel at train to start just to play the effect of reduction microbarometric wave, actual
On for having microbarometric wave to intensify the tunnel of effect, be only inadequate starting to reduce, tunnel portal buffer structure multipotency
Making microbarometric wave reduce about 50%, intensifying the non-fragment orbit tunnel of growing up of effect, actual remission effect in case of there is microbarometric wave
The most less better, sometimes can not reach expection remission effect.
Construction cost can be caused significantly to increase it addition, build the decompression configuration such as vertical shaft, transverse passage-way, service gallery in tunnel
Add, and uneconomical.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide one can alleviate microbarometric wave further and take into account economy
Property Railway Tunnel connect open cut tunnel.Technical scheme is as follows:
A kind of Railway Tunnel with microbarometric wave mitigation capability connects open cut tunnel, connects the cross-sectional area of open cut tunnel more than its institute
The cross-sectional area in two sections of tunnels before and after connection, and connect open cut tunnel cross section be polygon.
Further, the cross-sectional area of described connection open cut tunnel is 1.4:1 ~ 1.55:1 with the ratio of the cross-sectional area in tunnel.
Further, described connection open cut tunnel includes perpendicular sidewall, oblique sidewall and top；Top is planar structure, its side
It is connected to perpendicular sidewall by oblique sidewall.
Further, connect to be symmetrically arranged with on the both sides sidewall of open cut tunnel and organize vertical openings more.
Further, the distance that outermost two vertical openings arrive homonymy tunnel face respectively is equal, is 6 ~ 8m.
Further, the spacing of two vertical openings that homonymy is adjacent is equal, and spacing is 2m.
Further, each vertical openings equivalently-sized, its width is 1m, a length of 4m of hoop.
Further, the lower edge of described vertical openings is 1.5m with the distance from bottom being connected open cut tunnel.
The invention has the beneficial effects as follows: the present invention has fully excavated and connected open cut tunnel as alleviating Railway Tunnel hole
The effect of microbarometric wave, by providing connection open cut tunnel optimum section area, aperture position and bore size etc., can be farthest
Alleviate tunnel portal microbarometric wave, can alleviate as conventional microbarometric waves such as service galleries in tunnel entrance buffer structure and tunnel
The useful supplement of measure, and taken into account economy simultaneously.
Accompanying drawing explanation
Fig. 1 is the front view that the present invention has the Railway Tunnel connection open cut tunnel of microbarometric wave mitigation capability.
Fig. 2 is the side view that the present invention has the Railway Tunnel connection open cut tunnel of microbarometric wave mitigation capability.
Fig. 3 is that tunnel group connects the numerical simulation relation curve ratio of the pressure gradient of measuring point and time before and after open-cut tunnel structure
Relatively scheme.
In figure: 1-connects open cut tunnel；11-vertical openings；12-erects sidewall；The oblique sidewall of 13-；14-top；2-tunnel.
Detailed description of the invention
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.As it is shown in figure 1, one has micro-air pressure
The Railway Tunnel of ripple mitigation capability connects open cut tunnel, and the cross-sectional area connecting open cut tunnel 1 is more than two sections of tunnels before and after it is connected
The cross-sectional area in road 2, and connect open cut tunnel 1 cross section be polygon.
The mechanism produced from microbarometric wave, the factor affecting microbarometric wave intensity includes that train enters the speed in tunnel
Degree, the blockage ratio (ratio that train cross-sectional area is long-pending with tunnel cross sectional) etc. in tunnel, i.e. speed during train entrance tunnel is the biggest,
The microbarometric wave produced when blockage ratio is the biggest is the strongest.So immovable in the speed per hour and current existing construction ensureing train
Under premise, increase the cross-sectional area connecting open cut tunnel 1, be then significantly reduced the blockage ratio of open cut tunnel section, and then delay to a great extent
Solve the impact of microbarometric wave.
Connecting the cross-sectional area of open cut tunnel 1 with the cross-sectional area optimal proportion in tunnel 2 is 1.55:1, it is contemplated that open cut tunnel buffering knot
The occupation of land problem of structure, can the most suitably reduce the cross-sectional area of open cut tunnel.The ratio that the present embodiment uses is 1.4:
1。
Existing connection open cut tunnel cross section mostly is circular, and when using template construction, complex process, difficulty of construction is relatively
Greatly.For reducing difficulty of construction, use the structure of band corner angle as far as possible, i.e. connect open cut tunnel cross section and use polygon.?
Simple situation uses rectangular cross section for connecting open cut tunnel, but rectangular cross section easily produces air-swirl in edges and corners, increases
The complexity in flow field near train, is unfavorable for the alleviation of tunnel portal microbarometric wave.So the present embodiment uses obtuse angle polygon
Tee section, connects open cut tunnel and includes perpendicular sidewall 12, oblique sidewall 13 and top 14；Top 14 is planar structure, and its side passes through oblique side
Wall 13 is connected to perpendicular sidewall 12.
For increasing microbarometric wave remission effect further, also can be symmetrical arranged in connection open cut tunnel two side and organize vertical openings more
11.The present embodiment, as a example by the connection open cut tunnel of a length of 20m, connects cross-sectional area is tunnel area 1.4 times of open cut tunnel, and is
Uiform section polygonized structure, as in figure 2 it is shown, connect open cut tunnel lateral symmetry to arrange 4 groups of vertical openings, outermost two of homonymy erects
The distance arriving homonymy tunnel face to opening 11 respectively is equal, is 6 ~ 8m；The spacing of two vertical openings 11 that homonymy is adjacent is equal,
Spacing is 2m；Each vertical openings 11 equivalently-sized, its width is 1m, a length of 4m of hoop.The upper edge of vertical openings 11 is not
Exceed the upper edge of perpendicular sidewall 12, i.e. do not extend on oblique sidewall 13 and top 14, lower edge and the distance from bottom being connected open cut tunnel 1
For 1.5m, so can effectively prevent hydrops and falling rocks from entering from vertical openings and connect open cut tunnel.
As a example by above-mentioned vertical openings 11 position and size, and speed is 300km/h, train cross-sectional area 11.6m2, tunnel
Road cross-sectional area is 100m2, connect a length of 20m of open cut tunnel, connecting open cut tunnel cross-sectional area is 140m2Time, before tunnel group connects open cut tunnel
As it is shown on figure 3, wherein, abscissa is the time to the numerical simulation relation curve comparison diagram of the pressure gradient of rear measuring point and time,
Unit is s；Vertical coordinate is barometric gradient, and unit is kPa/s；Curve a is the pressure connecting open cut tunnel front measuring point described in the present embodiment
Power gradient calculation curve；Curve b is the barometric gradient calculated curve connecting open cut tunnel rear measuring point described in the present embodiment.Can from figure
To find out, when tunnel group connects the structure that open cut tunnel uses the present embodiment, it is positioned at the pressure ladder of open-cut tunnel structure Tunnel ahead measuring point
Degree peak value is 6.20kPa/s, and the peak value of pressure gradient being positioned at tunnel, open-cut tunnel structure rear measuring point is 3.87kPa/s, pressure ladder
Degree peak value reduces 38%.Owing to barometric gradient is directly proportional to the microbarometric wave peak value at tunnel exit, therefore, tunnel exit is micro-
Barometric wave peak value will also decrease about 38%, and its effect of easing stress is notable.
Claims (8)
1. a Railway Tunnel with microbarometric wave mitigation capability connects open cut tunnel, it is characterised in that connect open cut tunnel (1)
Cross-sectional area is more than the cross-sectional area of two sections of tunnels (2) before and after it is connected, and the cross section connecting open cut tunnel (1) is polygon
Shape.
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 1 connects open cut tunnel, and its feature exists
In, the cross-sectional area of described connection open cut tunnel (1) is 1.4:1 ~ 1.55:1 with the ratio of the cross-sectional area in tunnel (2).
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 1 connects open cut tunnel, and its feature exists
Perpendicular sidewall (12), oblique sidewall (13) and top (14) are included in, described connection open cut tunnel (1)；Top (14) is planar structure, its side
Limit is connected to perpendicular sidewall (12) by oblique sidewall (13).
4. connect open cut tunnel according to the Railway Tunnel with microbarometric wave mitigation capability described in any one of claim 1-3,
It is characterized in that, connect to be symmetrically arranged with on the both sides sidewall of open cut tunnel (1) and organize vertical openings (11) more.
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 4 connects open cut tunnel, and its feature exists
In, the distance that outermost two vertical openings (11) arrive homonymy tunnel face respectively is equal, is 6 ~ 8m.
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 4 connects open cut tunnel, and its feature exists
In, the spacing of two vertical openings (11) that homonymy is adjacent is equal, and spacing is 2m.
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 4 connects open cut tunnel, and its feature exists
Equivalently-sized in, each vertical openings (11), its width is 1m, a length of 4m of hoop.
The Railway Tunnel with microbarometric wave mitigation capability the most according to claim 4 connects open cut tunnel, and its feature exists
In, the lower edge of described vertical openings (11) is 1.5m with the distance from bottom being connected open cut tunnel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511063.2A CN105952468A (en) | 2016-06-30 | 2016-06-30 | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511063.2A CN105952468A (en) | 2016-06-30 | 2016-06-30 | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105952468A true CN105952468A (en) | 2016-09-21 |
Family
ID=56902196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610511063.2A Pending CN105952468A (en) | 2016-06-30 | 2016-06-30 | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105952468A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440547A (en) * | 2018-12-21 | 2019-03-08 | 福州大学 | High-speed rail tunnel exit denoising structure |
| CN111322085A (en) * | 2020-03-19 | 2020-06-23 | 中南大学 | Railway tunnel capable of relieving pressure fluctuation inside tunnel |
| CN112282786A (en) * | 2020-11-06 | 2021-01-29 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112395679A (en) * | 2020-11-23 | 2021-02-23 | 河北工程大学 | Equal-stage ladder type tunnel buffer structure and design optimization method thereof |
| CN114837690A (en) * | 2022-05-26 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on pressure relief space angle |
| CN114872739A (en) * | 2022-04-24 | 2022-08-09 | 中南大学 | High-speed magnetic suspension railway tunnel capable of relieving tunnel pressure wave and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814920A (en) * | 2006-03-08 | 2006-08-09 | 上海市隧道工程轨道交通设计研究院 | Multi-hole-wall buffering mode |
| CN201106157Y (en) * | 2007-10-29 | 2008-08-27 | 中铁二院工程集团有限责任公司 | High-speed railway tunnel opening micropressure wave buffering establishment |
| 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 |
| CN103032079A (en) * | 2012-12-31 | 2013-04-10 | 中铁第四勘察设计院集团有限公司 | Constant annular width bevel type tunnel opening buffer structure |
| CN103670436A (en) * | 2013-11-29 | 2014-03-26 | 西南交通大学 | Lateral stripped sonic boom control structure of high-speed rail tunnel portal |
| CN205823291U (en) * | 2016-06-30 | 2016-12-21 | 中铁西南科学研究院有限公司 | A kind of Railway Tunnel with microbarometric wave mitigation capability connects open cut tunnel |
-
2016
- 2016-06-30 CN CN201610511063.2A patent/CN105952468A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814920A (en) * | 2006-03-08 | 2006-08-09 | 上海市隧道工程轨道交通设计研究院 | Multi-hole-wall buffering mode |
| CN201106157Y (en) * | 2007-10-29 | 2008-08-27 | 中铁二院工程集团有限责任公司 | High-speed railway tunnel opening micropressure wave buffering establishment |
| 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 |
| CN103032079A (en) * | 2012-12-31 | 2013-04-10 | 中铁第四勘察设计院集团有限公司 | Constant annular width bevel type tunnel opening buffer structure |
| CN103670436A (en) * | 2013-11-29 | 2014-03-26 | 西南交通大学 | Lateral stripped sonic boom control structure of high-speed rail tunnel portal |
| CN205823291U (en) * | 2016-06-30 | 2016-12-21 | 中铁西南科学研究院有限公司 | A kind of Railway Tunnel with microbarometric wave mitigation capability connects open cut tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 吴剑等: "隧道群之间的连接明洞对车内瞬变压力变化规律的影响研究", 《第十二届海峡两岸隧道与地下工程学术与技术研讨会》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440547A (en) * | 2018-12-21 | 2019-03-08 | 福州大学 | High-speed rail tunnel exit denoising structure |
| CN111322085A (en) * | 2020-03-19 | 2020-06-23 | 中南大学 | Railway tunnel capable of relieving pressure fluctuation inside tunnel |
| CN111322085B (en) * | 2020-03-19 | 2022-02-15 | 中南大学 | Railway tunnel capable of relieving pressure fluctuation inside tunnel |
| CN112282786A (en) * | 2020-11-06 | 2021-01-29 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112282786B (en) * | 2020-11-06 | 2023-02-28 | 太原理工大学 | Micro-pressure wave retarding method for long and large tunnel of high-speed railway |
| CN112395679A (en) * | 2020-11-23 | 2021-02-23 | 河北工程大学 | Equal-stage ladder type tunnel buffer structure and design optimization method thereof |
| CN112395679B (en) * | 2020-11-23 | 2022-08-02 | 河北工程大学 | Equal-stage ladder type tunnel buffer structure and design optimization method thereof |
| CN114872739A (en) * | 2022-04-24 | 2022-08-09 | 中南大学 | High-speed magnetic suspension railway tunnel capable of relieving tunnel pressure wave and construction method thereof |
| CN114872739B (en) * | 2022-04-24 | 2023-10-03 | 中南大学 | High-speed magnetic levitation railway tunnel capable of relieving tunnel pressure wave and construction method thereof |
| CN114837690A (en) * | 2022-05-26 | 2022-08-02 | 中南大学 | Tunnel micro-pressure wave relieving method based on pressure relief space angle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105952468A (en) | High-speed railway tunnel connecting open-cut tunnel with micro-pressure wave alleviation function | |
| CN205823291U (en) | A kind of Railway Tunnel with microbarometric wave mitigation capability connects open cut tunnel | |
| CN105804116B (en) | The genuine section structure built jointly with pipe gallery is worn under a kind of | |
| CN104314614B (en) | A kind of mining arc anti-shock bulkhead wall and its construction method | |
| CN103670436B (en) | Railway Tunnel hole lateral straps formula sonic boom controls structure | |
| CN104197796A (en) | Annular layering blasting shock absorption method for shallowly-buried large-section tunnel to pass underneath existing building | |
| CN107180404A (en) | The waterway effect and tide riding level of a kind of tidal level trend dual factors control determine method | |
| CN103075173A (en) | High-position inclined E-type ventilation system of coal face | |
| CN102748064A (en) | Large-mining-height fully-mechanized caving face gas control method | |
| CN113063709A (en) | Method for determining curtain under complex aquifer condition | |
| CN209195411U (en) | A kind of speciality high risk mountain tunnel, which closes, point repairs structure | |
| CN101929339A (en) | Micro-pressure wave retardance structure for tunnel trunk of high-speed railway | |
| CN102765394A (en) | Low-air-pressure aerotrain | |
| CN103470269B (en) | Seam high efficiency buffer structure between Railway Tunnel hole | |
| CN102128036A (en) | Construction method of cross section-expanded loop type depressurizing portal for high-speed railway tunnel | |
| CN109751076A (en) | For being equipped with the escape structure and its escape method of the horizontal tunnel of deep shaft | |
| CN205823292U (en) | A kind of Railway Tunnel microbarometric wave alleviates device | |
| CN102678132B (en) | Anti-rockfall reinforced concrete open-cut tunnel structure | |
| CN202690074U (en) | Falling-rock preventing reinforced concrete open cut tunnel structure | |
| CN104480918B (en) | A kind of siphon outlet conduit of hydraulic performance excellence and application process thereof | |
| CN203614111U (en) | Break joint-type efficient buffer structure of high-speed railway tunnel portal | |
| CN101812991B (en) | Construction method for loop type hypobaric holes of railway tunnel | |
| CN110714798A (en) | Drainage distribution method for sill pillar-free mine stope | |
| CN203130093U (en) | 80kmh tunnel widening limitation structure form | |
| CN107386135B (en) | General optimization method for wind-prevention facilities of railways in wind area under strong wind environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160921 |