CN112664224A - Arrangement structure of evacuation channels under highway tunnel lane boards - Google Patents
Arrangement structure of evacuation channels under highway tunnel lane boards Download PDFInfo
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- CN112664224A CN112664224A CN202011613698.6A CN202011613698A CN112664224A CN 112664224 A CN112664224 A CN 112664224A CN 202011613698 A CN202011613698 A CN 202011613698A CN 112664224 A CN112664224 A CN 112664224A
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Abstract
The invention provides a highway tunnel lane plate lower evacuation channel arrangement structure which comprises a tunnel main body, wherein two ends of the tunnel main body are communicated with a working well, the tunnel main body is internally provided with a lane plate, the tunnel main body is divided into an upper layer and a lower layer by the lane plate, the upper layer is a traffic lane, the lower layer of the tunnel main body is provided with a slide room/staircase, an evacuation channel, a rescue lane and a pipe gallery in parallel in sequence, the slide room/staircase, the evacuation channel, the rescue lane and the pipe gallery are mutually separated, lane evacuation ports are arranged between the traffic lane and the slide room/staircase, a first fireproof door is arranged between the slide room/staircase and the evacuation channel, a second fireproof door is arranged between the evacuation channel and the rescue lane, and two ends of the rescue lane are provided with rescue vehicle inlets and outlets. The evacuation channels are independently arranged, so that the closure of the evacuation channels is ensured, the maintenance of the positive pressure state of the whole channel is facilitated, and the condition of air leakage at two sides is avoided.
Description
Technical Field
The invention belongs to the fields of highway tunnel safety evacuation and building smoke prevention, and particularly relates to an arrangement structure of evacuation channels under a highway tunnel lane board.
Background
At present, China has become the world with the most tunnel projects, the most complex tunnel projects and the fastest development. According to data of '2019 traffic transportation industry development statistical bulletin' issued by the ministry of transportation, 1896.66 kilometers are located at 19067 position of national highway tunnel by the end of 2019, wherein, a special tunnel 1175 position is located at 521.75 kilometers, and a long tunnel 4784 position is located at 826.31 kilometers. The construction of the highway tunnel brings convenience to economic development and people production and life, and simultaneously also puts higher requirements on tunnel safety, in particular to the safety problem of people evacuation during tunnel fire. The safety accidents of the highway tunnel operation caused by fire are frequent, and a large amount of casualties are caused by part of the accidents. The people evacuation passageway in highway tunnel is as the passway for escaping of personnel when the fire incident, and its reasonable layout and smoke control measure are vital.
At present, in the field of underwater highway tunnels, single-layer shield tunnels generally adopt a way of evacuation under a lane plate, evacuation channels (used for passing rescue vehicles and pedestrians), staircases/slide cases and galleries are arranged under the lane plate, lane evacuation ports are generally arranged on the lanes at certain intervals, and the lane evacuation ports are communicated with the staircases/slide cases. When a fire disaster occurs in the tunnel, personnel enter the staircase/slide room through the lane evacuation port and then enter the evacuation passage from the staircase/slide room to escape from the working wells at two ends of the tunnel. In order to ensure the evacuation safety of people, the evacuation channel needs to be kept in a positive pressure state, and generally, the working wells at the two ends of the tunnel are provided with pressurizing fans to pressurize and supply air to the evacuation channel.
The evacuation channel setting mode has three problems when being applied to long tunnels and extra-long tunnel projects: firstly, the pressurized air supply effect is poor, two ends of the safety channel are not closed, a large amount of pressurized air supply airflow is discharged to the outside through two ends for the rescue vehicle to enter and exit the tunnel; secondly, the evacuation channel has large section and large volume, so that the calculated value of the pressurized air supply quantity is very large, the problems of large capacity of ventilation equipment, insufficient installation space and difficulty in model selection of a fan exist, and the problem that the evacuation passage of people is influenced due to overlarge air speed of the section of the evacuation channel also exists; and thirdly, the evacuation channel has a plurality of air leakage points, the whole safety channel is difficult to maintain positive pressure, and certain potential safety hazards exist for people evacuation.
Disclosure of Invention
The invention aims to provide a highway tunnel roadway plate lower evacuation channel arrangement structure, which solves the problems of poor pressurized air supply effect, difficulty in maintaining positive pressure, difficulty in selecting equipment types, large installation space, poor personnel evacuation safety and the like of the traditional evacuation channel arrangement mode, does not need to damage and influence the whole structure of the tunnel roadway plate lower structure, has the advantages of good pressurized air supply effect, good effect of maintaining the positive pressure of the channel, safety and reliability, can effectively prevent tunnel smoke from entering an escape channel, provides a convenient channel for personnel evacuation, and improves the operation safety, fire prevention and disaster resistance of long tunnels and extra-long tunnels.
The invention is realized by the following steps:
the invention provides a highway tunnel lane plate lower evacuation channel arrangement structure which comprises a tunnel main body, wherein two ends of the tunnel main body are communicated with a working well, the tunnel main body is internally provided with a lane plate, the tunnel main body is divided into an upper layer and a lower layer by the lane plate, the upper layer is a traffic lane, the lower layer of the tunnel main body is provided with a slide room/staircase, an evacuation channel, a rescue lane and a pipe gallery in sequence, the slide room/staircase, the evacuation channel, the rescue lane and the pipe gallery are mutually separated, a lane evacuation port is arranged between the traffic lane and the slide room/staircase, a first fireproof door is arranged between the slide room/staircase and the evacuation channel, a second fireproof door is arranged between the evacuation channel and the rescue lane, and two ends of the rescue lane are provided with rescue vehicle entrances and exits.
Furthermore, be equipped with pressurization computer lab in the work well, pressurization computer lab links to each other with the new trend well that leads to ground in the well, pressurization computer lab is equipped with the pressurization forced draught blower in the well, the pressurization forced draught blower passes through the pressurization blast pipe direct action evacuation passageway.
Further, be equipped with pressurization computer lab in the tunnel main part, pressurization computer lab in the tunnel with the rescue lane links to each other, pressurization computer lab is equipped with the pressurization forced draught blower in the tunnel, the pressurization forced draught blower passes through the pressurization blast pipe direct action evacuation passageway.
Furthermore, the pressurization machine room in the tunnel is arranged in the middle of the evacuation channel and divides the evacuation channel into a front part and a rear part, the pressurization machine room in the tunnel is provided with two pressurization air blowers, and the two pressurization air blowers act on the front part and the rear part of the evacuation channel through pressurization air supply pipes respectively.
Further, pressurization computer lab is located in the tunnel rescue lane one side, pressurization computer lab is equipped with at least one pressurization forced draught blower in the tunnel and acts on through the pressurization blast pipe the middle part of evacuation passageway.
Further, a residual pressure valve is arranged between the evacuation channel and the slide room/stairs.
Furthermore, the lane scattering opening, the first fireproof door and the second fireproof door are all provided with a plurality of openings at certain intervals.
Compared with the prior art, the invention has the following beneficial effects:
(1) the evacuation channels are independently arranged, so that the closure of the evacuation channels is ensured, the maintenance of the positive pressure state of the whole channel is facilitated, and the condition of air leakage at two sides is avoided; (2) the arrangement of the pressurization machine room in the well and the pressurization machine room in the tunnel further divides the evacuation channel into a plurality of sections, effectively reduces the pressurization air supply quantity of the evacuation channel, is beneficial to reducing the type selection air quantity of a fan, saving the equipment installation space, reducing the section air speed of the evacuation channel and saving the initial investment of engineering equipment and civil engineering; (3) the arrangement of the pressurizing machine room in the well and the pressurizing machine room in the tunnel ensures the overall positive pressure maintenance performance of the evacuation channel of the long tunnel, can effectively avoid smoke from invading the evacuation channel and ensures the evacuation safety of personnel; (4) the invention has the advantages of convenient construction and simple structure, does not need to damage the civil construction structure under the roadway plate of the shield tunnel, can conveniently realize the reconstruction of the existing tunnel smoke protection system, and is also suitable for the design and construction of newly constructed tunnels.
Drawings
Fig. 1 is a schematic view of an arrangement structure of evacuation channels under a lane plate of a highway tunnel provided by the invention;
fig. 2 is a cross-sectional view of an arrangement structure of evacuation channels under a lane plate of a highway tunnel provided by the present invention.
Description of reference numerals: 100-a tunnel body; 1-a working well; 2-slide/stairwell; 3-evacuation channels; 4-rescue lane; 5-pipe gallery; 6-lane shedding; 7-a first fire door; 8-a second fire door; 9-entrance and exit of the rescue vehicle; 10-pressurizing a machine room in the well; 11-pressurizing the machine room in the tunnel; 12-a fresh air shaft; 13-a pressurized blower; 14-a pressurized blast pipe; 15-residual pressure valve; 16-a roadway; 17-lane plate.
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.
As shown in fig. 1 and 2, an embodiment of the present invention provides a highway tunnel roadway plate lower evacuation channel arrangement structure, including a tunnel main body 100, two ends of the tunnel main body 100 are communicated with a working well 1, a roadway plate 17 is arranged in the tunnel main body 100, the tunnel main body 100 is divided into an upper layer and a lower layer by the roadway plate 17, the upper layer is a roadway 16, the lower layer is provided with a slide room/staircase 2, an evacuation channel 3, a rescue lane 4 and a pipe gallery 5 in parallel, the slide room/staircase 2, the evacuation channel 3, the rescue lane 4 and the pipe gallery 5 are separated from each other, the evacuation channel 3 is independently arranged, so as to ensure the closure of the evacuation channel 3, facilitate the maintenance of a positive pressure state of the whole evacuation channel 3, and avoid the condition of air leakage at two sides. Lane is dredged and is broken mouthful 6 with be equipped with between slide/stair 2 between the slide, slide/stair 2 with be equipped with first fire door 7 between the evacuation passageway 3, evacuation passageway 3 with be equipped with the fire door 8 of second between the rescue lane 4, rescue lane 4 both ends are equipped with rescue car access & exit 9, preferably, lane is dredged and is broken mouthful 6 first fire door 7 the fire door 8 of second is prevented and is provided with a plurality ofly according to certain interval. The evacuation passage 3 is separated independently and is positioned between the slide room/staircase room 2 and the rescue lane 4, the cross section area and the volume of the evacuation passage 3 are greatly reduced, and the evacuation passage 3 is separated into a closed space by a partition wall and a fireproof door; when a fire disaster happens, people can enter the slide/staircase 2 through the lane scattering opening 6, then the first fireproof door 7 is opened to enter the scattering passage 3, and escape is carried out towards the working well 1, or the second fireproof door 8 is opened to enter the rescue lane 4 to wait for the rescue vehicle to escape.
Preferably, an internal pressurization machine room 10 is arranged in the working well 1, the internal pressurization machine room 10 is connected with a fresh air well 12 leading to the ground, the internal pressurization machine room 10 is provided with a pressurization blower 13, and the pressurization blower 13 directly acts on the evacuation channel 3 through a pressurization blower pipe 14. Further preferably, a pressurization machine room 11 in the tunnel is arranged in the tunnel main body 100, the pressurization machine room 11 in the tunnel is connected with the rescue lane 4, the pressurization machine room 11 in the tunnel is provided with a pressurization blower 13, and the pressurization blower 13 directly acts on the evacuation channel 3 through a pressurization blower pipe 14. The pressurizing blower 13 of the pressurizing machine room 10 in the well can take air from a fresh air well 12 in the working well 1 and convey the fresh air to the evacuation channel 3 through the pressurizing air supply pipe 14, and the pressurizing blower 13 of the pressurizing machine room 11 in the tunnel can take air from the rescue lane 4 and convey the fresh air to the evacuation channel 3 through the pressurizing air supply pipe 14, so that the positive pressure state is maintained in the evacuation channel 3, and smoke is prevented from invading the escape passage of people; the evacuation channel 3 is independently arranged, so that the condition of air leakage from the exit 9 of the rescue vehicle does not exist; the arrangement of the pressurization machine room 10 in the well and the pressurization machine room 11 in the tunnel further divides the evacuation channel 3 into a plurality of sections, realizes segmented air supply, ensures the effectiveness of pressurized air supply, reduces the type selection air quantity of single pressurization air supply equipment, ensures the maintenance of the integral positive pressure of the evacuation channel 3 of the long and large tunnel, and solves the problems of insufficient equipment installation space, difficult fan type selection and poor personnel evacuation safety.
As an embodiment of the intra-tunnel pressure machine room 11, the intra-tunnel pressure machine room 11 is disposed in the middle of the evacuation path 3 to divide the evacuation path 3 into a front part and a rear part, and the intra-tunnel pressure machine room 11 is provided with two pressure blowers 13, and the two pressure blowers 13 respectively act on the front part and the rear part of the evacuation path 3 through pressure blower pipes 14. As another embodiment of the in-tunnel pressure machine room 11, the in-tunnel pressure machine room 11 is provided on the rescue lane 4 side, and the in-tunnel pressure machine room 11 is provided with at least one pressure blower 13 and acts on the middle portion of the evacuation path 3 through a pressure blower pipe 14. Both of the above two embodiments realize further division of the evacuation channel 3 into a plurality of sections, and realize segmented air supply.
Further optimally, evacuation passageway 3 with be equipped with backpressure valve 15 between slide room/stair 2, be equipped with backpressure valve 15 between evacuation passageway 3 and slide room/stair 2, can guarantee to maintain certain malleation state in the evacuation passageway 3, avoided too big fire door of pressure to push open the problem, further guarantee personnel evacuation safety.
In summary, the arrangement structure of the evacuation channels under the lane boards of the highway tunnel provided by the embodiment of the invention has the following beneficial effects:
(1) the evacuation channels 3 are independently arranged, so that the closure of the evacuation channels 3 is ensured, the maintenance of the positive pressure state of the whole channel is facilitated, and the condition of air leakage at two sides is avoided; (2) the arrangement of the pressurization machine room 10 in the well and the pressurization machine room 11 in the tunnel further divides the evacuation channel 3 into a plurality of sections, so that the pressurization air supply quantity of the evacuation channel 3 is effectively reduced, the fan type selection air quantity is reduced, the equipment installation space is saved, the section air speed of the evacuation channel 3 is reduced, and the initial investment of engineering equipment and civil engineering is saved; (3) the arrangement of the pressurization machine room 10 in the well and the pressurization machine room 11 in the tunnel ensures the overall positive pressure maintenance performance of the evacuation channel 3 of the long and large tunnel, can effectively avoid the smoke from invading the evacuation channel 3, and ensures the evacuation safety of personnel; (4) the invention has the advantages of convenient construction and simple structure, does not need to damage the civil construction structure under the tunnel plate 17 of the shield tunnel, can conveniently realize the reconstruction of the existing tunnel smoke-proof system, and is also suitable for the design and construction of newly-built tunnels.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an evacuation passageway arrangement structure under highway tunnel lane board, includes the tunnel main part, tunnel main part both ends are linked together with the working well, be equipped with the lane board in the tunnel main part, the tunnel main part is two-layer about being divided into by the lane board, and the upper strata is lane, its characterized in that: the lower floor of tunnel main part has set gradually between the slide/staircase, evacuation passageway, rescue lane and piping lane side by side, between the slide/staircase evacuation passageway rescue lane and separate each other between the piping lane, the roadway with be equipped with the lane between the slide/staircase and dredge mouthful, between the slide/staircase with be equipped with first fire door between the evacuation passageway, evacuation passageway with be equipped with the fire door of second between the rescue lane, rescue lane both ends are equipped with the rescue car access & exit.
2. The arrangement structure of evacuation passageways under road tunnel roadway plate of claim 1, wherein: the novel evacuation device is characterized in that an in-well pressurizing machine room is arranged in the working well, the in-well pressurizing machine room is connected with a fresh air well communicated with the ground, a pressurizing air feeder is arranged in the in-well pressurizing machine room, and the pressurizing air feeder directly acts on the evacuation channel through a pressurizing air supply pipe.
3. The arrangement structure of evacuation passageways under road tunnel roadway plate of claim 1, wherein: the evacuation device is characterized in that a pressurization machine room in the tunnel is arranged in the tunnel main body, the pressurization machine room in the tunnel is connected with the rescue lane, a pressurization air feeder is arranged in the pressurization machine room in the tunnel, and the pressurization air feeder directly acts on the evacuation channel through a pressurization air supply pipe.
4. The arrangement structure of evacuation channels under a roadway tunnel roadway plate of claim 3, wherein: the pressurization machine room in the tunnel is arranged in the middle of the evacuation channel and divides the evacuation channel into a front part and a rear part, the pressurization machine room in the tunnel is provided with two pressurization air blowers, and the two pressurization air blowers act on the front part and the rear part of the evacuation channel through pressurization air supply pipes respectively.
5. The arrangement structure of evacuation channels under a roadway tunnel roadway plate of claim 3, wherein: the pressurization machine room is arranged on one side of the rescue lane and is provided with at least one pressurization blower which acts on the middle part of the evacuation channel through a pressurization air supply pipe.
6. The arrangement structure of evacuation passageways under road tunnel roadway plate of claim 1, wherein: and a residual pressure valve is arranged between the evacuation channel and the slide room/stairs.
7. The arrangement structure of evacuation passageways under road tunnel roadway plate of claim 1, wherein: the lane scattering opening, the first fireproof door and the second fireproof door are all provided with a plurality of openings at certain intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011613698.6A CN112664224A (en) | 2020-12-31 | 2020-12-31 | Arrangement structure of evacuation channels under highway tunnel lane boards |
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| CN202011613698.6A CN112664224A (en) | 2020-12-31 | 2020-12-31 | Arrangement structure of evacuation channels under highway tunnel lane boards |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446053A (en) * | 2021-07-01 | 2021-09-28 | 中铁第五勘察设计院集团有限公司 | Pressurization air supply system of tunnel safe evacuation channel |
| CN113513353A (en) * | 2021-07-23 | 2021-10-19 | 中铁第四勘察设计院集团有限公司 | Longitudinal relay type smoke-proof evacuation method and system for ultra-long safety channel of tunnel |
| CN114626121A (en) * | 2022-01-14 | 2022-06-14 | 上海品览数据科技有限公司 | Automatic arrangement method for pressurization system of ground part of central building in heating and ventilation profession |
-
2020
- 2020-12-31 CN CN202011613698.6A patent/CN112664224A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446053A (en) * | 2021-07-01 | 2021-09-28 | 中铁第五勘察设计院集团有限公司 | Pressurization air supply system of tunnel safe evacuation channel |
| CN113513353A (en) * | 2021-07-23 | 2021-10-19 | 中铁第四勘察设计院集团有限公司 | Longitudinal relay type smoke-proof evacuation method and system for ultra-long safety channel of tunnel |
| CN114626121A (en) * | 2022-01-14 | 2022-06-14 | 上海品览数据科技有限公司 | Automatic arrangement method for pressurization system of ground part of central building in heating and ventilation profession |
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