CN113605922A - High-speed railway tunnel decompression method - Google Patents
High-speed railway tunnel decompression method Download PDFInfo
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- CN113605922A CN113605922A CN202111026504.7A CN202111026504A CN113605922A CN 113605922 A CN113605922 A CN 113605922A CN 202111026504 A CN202111026504 A CN 202111026504A CN 113605922 A CN113605922 A CN 113605922A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000006837 decompression Effects 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 33
- 230000035939 shock Effects 0.000 claims abstract description 21
- 230000008030 elimination Effects 0.000 claims abstract description 6
- 238000003379 elimination reaction Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 36
- 230000007246 mechanism Effects 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000030279 gene silencing Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
- B05B12/122—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to presence or shape of target
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a high-speed railway tunnel decompression method in the technical field of railway tunnels, which comprises the steps of adopting decompression measures in a tunnel, namely adopting reduction measures at the bottom of the tunnel to eliminate more concentrated shock waves in the tunnel so as to slow down the phenomenon of tunnel outlet micro-pressure waves; taking a pressure reduction measure at the exit of the tunnel, namely changing the exit section area of the tunnel into an area with variable density through an external connection condition; and a micropressure wave slowing measure is adopted at the exit of the tunnel to achieve the purpose of eliminating micropressure waves; according to the invention, the inside and the outside of the tunnel are combined to form the abatement function by adopting corresponding micro-pressure wave abatement measures, and the micro-pressure waves are processed in a hierarchical manner, so that the micro-pressure waves are subjected to overlapped elimination treatment, the influence caused by the micro-pressure waves is greatly reduced, the influence on the surrounding environment is further reduced, the micro-pressure waves are abated in an up-and-down combination manner, the influence on the micro-pressure waves is further reduced, and the abatement quality on the micro-pressure waves is improved.
Description
Technical Field
The invention relates to the technical field of railway tunnels, in particular to a method for decompressing a high-speed railway tunnel.
Background
The railway tunnel is a passage specially used for train transportation and running. When a railway passes through a mountain land, the elevation obstacle needs to be overcome due to the limited traction capacity and the maximum slope requirement. The tunnel excavation through the mountain is a reasonable choice, and the effect of the tunnel excavation is to shorten the route, reduce the slope, improve the operation condition and improve the traction capacity. Can be divided into three categories according to the position: a tunnel traversing from a mountain or under a hill to shorten the distance and avoid a large slope is called a mountain tunnel; underwater tunnels passing under a river or sea floor to cross a river or channel; urban tunnels are used to cross underground cities to meet the needs of railways to pass through large cities.
When the compression waves reach the tunnel outlet, the compression waves are reflected to the inlet to form expansion waves, and simultaneously, micro-pressure waves are generated to be diffused to the surrounding area of the tunnel outlet to generate blasting noise and cause serious damage to the surrounding environment; therefore, a method for reducing the pressure of the high-speed railway tunnel is provided.
Disclosure of Invention
The invention aims to provide a method for reducing pressure of a high-speed railway tunnel, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for reducing pressure of a high-speed railway tunnel comprises the following steps,
decompression measures are taken inside the tunnel, namely, the bottom of the tunnel is taken with reduction measures to eliminate more concentrated shock waves in the tunnel, so that the phenomenon of tunnel outlet micropressure waves is relieved;
adopting a pressure reduction measure at the tunnel outlet, namely changing the area of the tunnel outlet section into an area with variable density through an external condition, so that shock waves are concentrated at the bottom of the tunnel, and the pressure gradient at the upper part of the tunnel is reduced;
and a micro-pressure wave slowing measure is adopted at the exit of the tunnel to achieve the purpose of eliminating the micro-pressure waves.
Furthermore, the reduction measure of the bottom of the tunnel is that a porous material is laid on the tunnel to absorb shock waves generated in the running process of the train, so that the propagation resistance of the shock waves is increased, and the propagation speed of the shock waves is reduced.
Furthermore, subduct the measure still include and seted up the cross bore in tunnel inner chamber both sides, the exit end and the tunnel outside of cross bore link to each other, just be provided with the fan in the cross bore, the direction of seting up of cross bore forms 90 degrees contained angles with the direction of digging in tunnel.
Furthermore, the pressure reduction measure for changing the density change area is to spray water mist on the upper part of the tunnel, water supply pipes with the covering width larger than the width of the track are laid on the upper part of the tunnel at equal intervals, spraying mechanisms are arranged at the water outlet ends of the water supply pipes at equal intervals, and the spraying mechanisms are inclined at an angle of 30 degrees.
Furthermore, the micro-pressure wave mitigation measures comprise that a silencing structure is arranged at the exit section of the tunnel, the silencing structure is formed by a plurality of layers of silencing plates which are uniformly arranged, baffle plates are inserted between the silencing plates at intervals of 0.5 m, and the height ratio of the baffle plates to the silencing plates is 0.75-0.85.
Furthermore, the measure for alleviating the micro-pressure wave also comprises the step of generating a negative pulse wave with the phase opposite to that of the micro-pressure wave at the exit of the tunnel to achieve the aim of elimination, and the corresponding pulse wave is emitted by controlling the sound source and is superposed with the micro-pressure wave generated at the exit of the tunnel at one point of the exit of the tunnel.
Furthermore, the spraying mechanism is provided with a sensor which is opened when the train passes through the tunnel and closed after passing through the tunnel, and the end part of the spraying mechanism is provided with a spraying amount control mechanism for controlling the spraying amount and speed of the spraying, and the spraying amount and speed of the spraying are in direct proportion to the speed of the train.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the inside and the outside of the tunnel are combined to form the abatement function by adopting corresponding micro-pressure wave abatement measures, and the micro-pressure waves are processed in a hierarchical manner, so that the micro-pressure waves are subjected to overlapped elimination treatment, the influence caused by the micro-pressure waves is greatly reduced, the influence on the surrounding environment is further reduced, the micro-pressure waves are abated in an up-and-down combination manner, the propagation influence on the micro-pressure waves in different directions is further reduced, the influence on the micro-pressure waves is further reduced, and the abatement quality on the micro-pressure waves is improved.
Drawings
FIG. 1 is a block diagram of the method for decompressing the high-speed railway tunnel.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1, the present invention provides a method for reducing pressure in a tunnel of a high-speed railway, including taking pressure reduction measures inside the tunnel, that is, taking reduction measures at the bottom of the tunnel to eliminate more concentrated shock waves in the tunnel, so as to alleviate the phenomenon of micro-pressure waves at the exit of the tunnel; adopting a pressure reduction measure at the tunnel outlet, namely changing the area of the tunnel outlet section into an area with variable density through an external condition, so that shock waves are concentrated at the bottom of the tunnel, and the pressure gradient at the upper part of the tunnel is reduced; and a micro-pressure wave slowing measure is adopted at the exit of the tunnel to achieve the purpose of eliminating the micro-pressure waves.
The reduction measure of the tunnel bottom is that a porous material is laid on the tunnel to absorb shock waves generated in the running process of the train, so that the propagation resistance of the shock waves is increased, and the propagation speed of the shock waves is reduced.
The reduction measures also comprise that transverse holes are formed in two sides of the inner cavity of the tunnel, the outlet ends of the transverse holes are connected with the outside of the tunnel, a fan is arranged in each transverse hole, and the forming direction of each transverse hole and the forming direction of the tunnel form a 90-degree included angle.
The decompression measure for changing the density change area is to spray water mist on the upper part of the tunnel, water supply pipes with the covering width larger than the width of the track are laid on the upper part of the tunnel at equal intervals, spraying mechanisms are arranged at the water outlet ends of the water supply pipes at equal intervals, and the spraying mechanisms are inclined at an angle of 30 degrees.
The micro-pressure wave reduction measure comprises a noise reduction structure arranged at the exit section of the tunnel, the noise reduction structure is formed by a plurality of layers of noise reduction plates which are uniformly arranged, baffle plates are inserted between the noise reduction plates at intervals of 0.5 m, the height ratio of the baffle plates to the noise reduction plates is 0.75, and the micro-pressure wave reduction measure is low.
The micropressure wave slowing means also comprises the step of generating a negative pulse wave with the phase opposite to that of the micropressure wave at the tunnel outlet to achieve the aim of elimination, and the step of controlling the sound source to send out a corresponding pulse wave to be superposed with the micropressure wave generated at the tunnel outlet at one point of the tunnel outlet.
The spraying mechanism is provided with a sensor which is opened when the train passes through the tunnel and closed after passing through the tunnel, and the end part of the spraying mechanism is provided with a spraying amount control mechanism for controlling the spraying amount and speed of the spraying, and the spraying amount and speed of the spraying are in direct proportion to the speed of the train.
Example two: referring to fig. 1, the present invention provides a method for reducing pressure in a tunnel of a high-speed railway, including taking pressure reduction measures inside the tunnel, that is, taking reduction measures at the bottom of the tunnel to eliminate more concentrated shock waves in the tunnel, so as to alleviate the phenomenon of micro-pressure waves at the exit of the tunnel; adopting a pressure reduction measure at the tunnel outlet, namely changing the area of the tunnel outlet section into an area with variable density through an external condition, so that shock waves are concentrated at the bottom of the tunnel, and the pressure gradient at the upper part of the tunnel is reduced; and a micro-pressure wave slowing measure is adopted at the exit of the tunnel to achieve the purpose of eliminating the micro-pressure waves.
The reduction measure of the tunnel bottom is that a porous material is laid on the tunnel to absorb shock waves generated in the running process of the train, so that the propagation resistance of the shock waves is increased, and the propagation speed of the shock waves is reduced.
The reduction measures also comprise that transverse holes are formed in two sides of the inner cavity of the tunnel, the outlet ends of the transverse holes are connected with the outside of the tunnel, a fan is arranged in each transverse hole, and the forming direction of each transverse hole and the forming direction of the tunnel form a 90-degree included angle.
The decompression measure for changing the density change area is to spray water mist on the upper part of the tunnel, water supply pipes with the covering width larger than the width of the track are laid on the upper part of the tunnel at equal intervals, spraying mechanisms are arranged at the water outlet ends of the water supply pipes at equal intervals, and the spraying mechanisms are inclined at an angle of 30 degrees.
The micro-pressure wave reduction measure comprises a noise reduction structure arranged at the exit section of the tunnel, the noise reduction structure is formed by a plurality of layers of noise reduction plates which are uniformly arranged, baffle plates are inserted between the noise reduction plates at intervals of 0.5 m, the height ratio of the baffle plates to the noise reduction plates is 0.85, and the micro-pressure wave reduction measure is high.
The micropressure wave slowing means also comprises the step of generating a negative pulse wave with the phase opposite to that of the micropressure wave at the tunnel outlet to achieve the aim of elimination, and the step of controlling the sound source to send out a corresponding pulse wave to be superposed with the micropressure wave generated at the tunnel outlet at one point of the tunnel outlet.
The spraying mechanism is provided with a sensor which is opened when the train passes through the tunnel and closed after passing through the tunnel, and the end part of the spraying mechanism is provided with a spraying amount control mechanism for controlling the spraying amount and speed of the spraying, and the spraying amount and speed of the spraying are in direct proportion to the speed of the train.
The rest of the measures are the same as the first embodiment.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A high-speed railway tunnel decompression method is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
decompression measures are taken inside the tunnel, namely, the bottom of the tunnel is taken with reduction measures to eliminate more concentrated shock waves in the tunnel, so that the phenomenon of tunnel outlet micropressure waves is relieved;
adopting a pressure reduction measure at the tunnel outlet, namely changing the area of the tunnel outlet section into an area with variable density through an external condition, so that shock waves are concentrated at the bottom of the tunnel, and the pressure gradient at the upper part of the tunnel is reduced;
and a micro-pressure wave slowing measure is adopted at the exit of the tunnel to achieve the purpose of eliminating the micro-pressure waves.
2. The method for decompressing the high-speed railway tunnel according to claim 1, wherein: the reduction measure of the bottom of the tunnel is that a porous material is laid on the tunnel to absorb shock waves generated in the running process of the train, so that the propagation resistance of the shock waves is increased, and the propagation speed of the shock waves is reduced.
3. The method for decompressing the high-speed railway tunnel according to claim 2, wherein: the subduction measures further comprise that transverse holes are formed in two sides of the inner cavity of the tunnel, the outlet end of each transverse hole is connected with the outside of the tunnel, a fan is arranged in each transverse hole, and a 90-degree included angle is formed between the arrangement direction of each transverse hole and the arrangement direction of the tunnel.
4. The method for decompressing the high-speed railway tunnel according to claim 1 or 3, wherein: the decompression measure for changing the density change area is to spray water mist on the upper part of the tunnel, water supply pipes with the covering width larger than the width of the track are laid on the upper part of the tunnel at equal intervals, spraying mechanisms are arranged at the water outlet ends of the water supply pipes at equal intervals, and the spraying mechanisms are inclined at an angle of 30 degrees.
5. The method for decompressing the high-speed railway tunnel according to claim 4, wherein: the micro-pressure wave reducing measures comprise that a silencing structure is arranged at the exit section of the tunnel, the silencing structure is formed by a plurality of layers of silencing plates which are uniformly arranged, baffle plates are inserted between the silencing plates at intervals of 0.5 m, and the height ratio of the baffle plates to the silencing plates is 0.75-0.85.
6. The method for decompressing the high-speed railway tunnel according to claim 5, wherein: the micropressure wave slowing measure also comprises the step of generating a negative pulse wave with the phase opposite to that of the micropressure wave at the tunnel outlet to achieve the aim of elimination, and the step of controlling the sound source to send out a corresponding pulse wave and superposing the negative pulse wave with the micropressure wave generated at the tunnel outlet at one point of the tunnel outlet.
7. The method for decompressing the high-speed railway tunnel according to claim 4, wherein: the spraying mechanism is provided with an inductor, the inductor is opened when a train passes through the tunnel and is closed after passing through the tunnel, and the end part of the spraying mechanism is provided with a spraying amount control mechanism for controlling the spraying amount and speed of the spraying, and the spraying amount and speed of the spraying are in a direct proportion relation with the speed of the train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026504.7A CN113605922A (en) | 2021-09-02 | 2021-09-02 | High-speed railway tunnel decompression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026504.7A CN113605922A (en) | 2021-09-02 | 2021-09-02 | High-speed railway tunnel decompression method |
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| Publication Number | Publication Date |
|---|---|
| CN113605922A true CN113605922A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111026504.7A Withdrawn CN113605922A (en) | 2021-09-02 | 2021-09-02 | High-speed railway tunnel decompression method |
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| Country | Link |
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| CN (1) | CN113605922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352306A (en) * | 2021-11-30 | 2022-04-15 | 中铁二院工程集团有限责任公司 | Enlarged tunnel device of high-speed railway tunnel portal and design method thereof |
| WO2024147418A1 (en) * | 2023-01-03 | 2024-07-11 | 한국과학기술원 | System for reducing noise in underwater tunnel |
-
2021
- 2021-09-02 CN CN202111026504.7A patent/CN113605922A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352306A (en) * | 2021-11-30 | 2022-04-15 | 中铁二院工程集团有限责任公司 | Enlarged tunnel device of high-speed railway tunnel portal and design method thereof |
| WO2024147418A1 (en) * | 2023-01-03 | 2024-07-11 | 한국과학기술원 | System for reducing noise in underwater tunnel |
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Application publication date: 20211105 |