Tunnel ventilation structure
Technical field
This utility model belongs to tunnel ventilation technical field, is specifically related to a kind of tunnel ventilation structure.
Background technology
Air condition in tunnel has important impact to traffic safety.Tunnel Ventilation System is the important set that tunnel safety runs
Become part.Mainly increase air by wind to flow, thus control harmful gas concentration, reach the effect of dilution.
Ventilating system in tunnel is generally divided into gravity-flow ventilation and force ventilation.Gravity-flow ventilation relies on without Fan Equipment exactly
Piston effect and the dump energy thereof of driving act on the common of natural wind, and flue gas is discharged tunnel.Force ventilation is exactly to work as nature
When ventilation is unsatisfactory for smoke evacuation demand, the plant equipment such as blower fan are used to achieve the goal.Above-mentioned ventilating system can be divided into the most again
Three major types, i.e. Longitudinal, transverse type and half transverse type.Wherein, Longitudinal is from one end, tunnel (or end of segmentation by fresh air
Portion) introduce, flue gas is discharged from the other end;Transverse type is that tunnel is divided into some segments, by fresh air from every a bit of tunnel
Side is sent into, and after the flue gas in dilution tunnel, the other end from tunnel is discharged again;Half transverse type is then between transverse type and longitudinal direction
Between formula, being introduced from one or both ends, tunnel by fresh air, flue gas is discharged via the wind canal beyond tunnel cross-section again.
Although existing ventilating system type is more, but is not the most effectively combined with ventilating system by tunnel structure, it is unfavorable for
Blower fan lowers consumption.
Summary of the invention
In view of this, the purpose of this utility model is that providing a kind of optimizes air intake passage, the tunnel of reduction power of fan consumption
Aeration structure.
For reaching above-mentioned purpose, this utility model provides following technical scheme: a kind of tunnel ventilation structure, including escape canal and
Air-out passage, described escape canal is opened in the intersection of tunnel inner wall and ground, and described air-out passage has several, and interval sets
Put on tunnel inner wall;The semicircular arc sheet that each air-out passage is mainly obliquely installed by several forms, each semicircular arc sheet two ends
It is separately fixed on tunnel inner wall above the ground in the escape canal with below ground, the incline direction of each described semicircular arc sheet
Consistent with direction of ventilation.
Further, each described air-out passage comprises six semicircular arc sheets and each semicircular arc sheet uniform intervals is arranged.
Further, also include that ditch cover plate, described ditch cover plate lid are located at above escape canal and are connected with semicircular arc sheet.
Further, described air-out passage half is positioned at escape canal, and second half is positioned at above escape canal.
Further, each semicircular arc sheet being additionally provided with inclined plane, the incline direction of described inclined plane is consistent with direction of ventilation.
The beneficial effects of the utility model are: this aeration structure uses half transverse type, by by the escape canal in tunnel and half
Flexible wind system combines, thus improves underground space utilization rate;Arrange and structure further through to exhaust vent in air-out passage
Optimize, improve effect of natural ventilation, make power of fan consumption reduce, it is achieved that energy conservation reduces with cost.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, this utility model provides drawings described below to enter
Row explanation:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the A portion enlarged drawing of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As it can be seen, the tunnel ventilation structure in this utility model, including escape canal 1 and air-out passage 2, described gutter
Canal 1 is opened in the intersection of tunnel inner wall 3 and ground 4, and described air-out passage 2 has several, is disposed on tunnel inner wall
On 3;The semicircular arc sheet 21 that each air-out passage 2 is mainly obliquely installed by several forms, and each semicircular arc sheet 21 two ends are divided
Be not fixed on the tunnel inner wall 3 above ground 4 with ground 4 below escape canal 1 in, each described semicircular arc sheet 21
Incline direction is consistent with direction of ventilation.
Concrete, air-out passage 2 includes on the ground, underground two parts, and wherein underground half (i.e. leeward passage 22) is positioned at draining
In irrigation canals and ditches 1, half (i.e. windward passage 23) is positioned at above escape canal 1, as air outlet on the ground.Semicircular arc sheet 21
There is certain angle of inclination when mounted, ventilation effect can be effectively improved.
In the present embodiment, each air-out passage 2 comprises six semicircular arc sheets 21 and each semicircular arc sheet 21 uniform intervals is arranged, can
Make air-out uniform, thus ensure ventilation effect.
As the further improvement of such scheme, also include that ditch cover plate 5, described ditch cover plate 5 lid are located on escape canal 1
Fang Bingyu semicircular arc sheet 21 is connected, and can effectively prevent foreign material from entering escape canal 1.
As the further improvement of such scheme, each semicircular arc sheet 21 is additionally provided with inclined plane, the incline direction of described inclined plane
Consistent with direction of ventilation, ventilation effect can be effectively improved.
Finally illustrating, preferred embodiment above is only in order to illustrate the technical solution of the utility model and unrestricted, although passing through
This utility model is described in detail by above preferred embodiment, it is to be understood by those skilled in the art that can be
In form and it is made various change, without departing from this utility model claims limited range in details.