CN214787544U - Novel drainage and smoke exhaust system suitable for extra-long tunnel of water-rich stratum - Google Patents

Abstract

The utility model provides a novel drainage and smoke exhaust system suitable for a water-rich stratum extra-long tunnel, which comprises two drainage holes arranged on the same side of the tunnel, wherein the two drainage holes are arranged in sequence along the direction of a main tunnel of the tunnel; the drainage tunnel comprises a drainage box culvert and a pedestrian overhaul channel arranged above the drainage box culvert, the drainage tunnel is internally and inwardly provided with a smoke exhaust section, a fan section and a water drainage section in sequence from a tunnel opening, the drainage tunnel is provided with a drainage channel for receiving external water at the position of the water drainage section, and the water outlet end of the drainage channel extends to the inside of the drainage box culvert; the drainage tunnel is provided with a fan room at the position of the fan section and is provided with an exhaust pipe with an exhaust fan; and the air inlet of the exhaust pipe is respectively communicated with the two tunnel main holes in the opposite driving direction through a smoke exhaust channel. Through setting up drainage system of discharging fume can carry out effective drainage and low-cost to rich water stratum extra long tunnel and discharge fume.

Description

Novel drainage and smoke exhaust system suitable for extra-long tunnel of water-rich stratum

Technical Field

The utility model relates to a tunnel field especially relates to a novel drainage system of discharging fume suitable for rich water stratum extra long tunnel.

Background

In mountain highway route selection with complex terrain, the tunnel can overcome elevation obstacles, shorten the route length and reduce the slope and curvature, thereby improving the technical standard of the route, therefore, the tunnel can be used for route selection, but the tunnel is always exposed to water during the construction and operation of mountain tunnels, the aging of the tunnel structure can be accelerated by the underground water in the water-rich stratum, and in the expressway industry, the tunnel from 5km to 5.5km is common, and according to the requirements of JTGT _ D70-2014 of the Ministry of Ventilation design of the highway tunnel, the maximum travel of fire smoke in the tunnel is not more than 5km, therefore, the extra-long tunnel in the water-rich stratum must be subjected to water drainage and smoke exhaust treatment.

In the existing method, drainage ditches are often arranged in a tunnel so as to be used for draining water, and although the drainage ditches in the tunnel have certain drainage capacity, the drainage ditches cannot meet the requirement of high water inflow of 20 ten thousand m3/d only by the drainage ditches, so that the underground water of a water-rich stratum cannot be effectively controlled; in addition, in the existing method, a scheme of inclined shaft smoke exhaust is also often adopted for a tunnel of 5km-5.5km, and although the inclined shaft smoke exhaust can exhaust smoke in the tunnel, the scheme of inclined shaft smoke exhaust often causes waste of engineering economy in actual engineering application.

In view of the above, there is a need for a novel water and smoke discharging system suitable for an extra-long tunnel in a water-rich stratum, so as to solve or at least alleviate the technical defects that the extra-long tunnel in the water-rich stratum cannot be effectively drained and the smoke can be discharged at low cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel drainage system of discharging fume suitable for extra long tunnel in rich water stratum aims at solving the technical problem that can't carry out effective drainage and low-cost to extra long tunnel in rich water stratum among the prior art and discharge fume.

In order to achieve the purpose, the utility model provides a novel drainage and smoke exhaust system suitable for a water-rich stratum extra-long tunnel, which comprises two drainage holes arranged on the same side of the tunnel, wherein the two drainage holes are arranged in sequence along the direction of a main tunnel of the tunnel, and the direction of the holes of the two drainage holes is opposite;

the drainage tunnel comprises a drainage box culvert and a pedestrian overhaul channel arranged above the drainage box culvert, wherein the drainage tunnel is internally provided with a smoke exhaust section, a fan section and a water drainage section which are sequentially formed from the opening of the tunnel to the inside in an inward extending mode, the drainage tunnel is provided with a drainage channel for receiving external water at the position of the water drainage section, the water outlet end of the drainage channel extends to the inside of the drainage box culvert, and the water inlet end of the drainage channel is higher than the water outlet end and is not higher than the road surface of the main tunnel cave;

the drainage tunnel is provided with a fan room at the position of the fan section, the fan room is arranged above the manway overhaul channel and is provided with an exhaust pipe with an exhaust fan; the air outlet of the exhaust pipe is communicated with the pedestrian overhaul channel of the smoke exhaust section, and the air inlets of the exhaust pipes of the two drainage tunnels are respectively communicated with the two tunnel main tunnels in the opposite driving direction through the smoke exhaust channel.

Further, the top of the pedestrian access passage is not higher than the road surface height of the tunnel main hole.

Further, the sluicing passageway is including seting up in the first sluicing of people's bank of china maintenance passageway lateral wall and intercommunication external world and intercommunication people's bank of china maintenance passageway with the second sluicing of drainage box culvert, the second sluicing is seted up in the road surface both sides of people's bank of china maintenance passageway.

Furthermore, the sections of leaking water the pavement both sides of people's bank of china overhaul passageway all are equipped with the diversion ditch, the section of leaking water the pavement of people's bank of china overhaul passageway is formed with from the middle slant downwardly extending of pavement to both sides the diversion slope of diversion ditch, the second sluicing way intercommunication the diversion ditch with the inside of drainage culvert case.

Further, the height and the width of the two sides of the water drainage tunnel at the fan section are both larger than the height and the width of the two sides of the water drainage tunnel at the smoke exhaust section and the water drainage section.

Furthermore, the drainage tunnel is provided with at least two vehicle avoidance areas which respectively extend towards the two side walls at the drainage section.

Furthermore, the communicating part of the smoke exhaust channel and the tunnel main hole is arranged close to the fan section, and the length of the fan section along the drainage hole is 20-40 m.

Further, the exhaust fan is a smoke exhaust axial flow fan.

Furthermore, a prefabricated plate is arranged on the bottom surface of the fan room, supporting parts for supporting the prefabricated plate are arranged on two sides of the drainage tunnel, and an upright post for supporting the prefabricated plate is arranged between the bottom of the drainage tunnel and the prefabricated plate.

Furthermore, the sluicehole and the tunnel are arranged in parallel, the smoke exhaust section and the fan section of the sluicehole are arranged close to the hole outlet of the main tunnel, and the communication position of the smoke exhaust channel and the main tunnel is also arranged close to the hole outlet of the main tunnel.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model can effectively drain water and discharge smoke with low cost for the extra-long tunnel in the water-rich stratum, and can discharge the underground water around the tunnel by arranging the drainage tunnel, thereby avoiding the structural aging and the abnormal passing of the tunnel in the water-rich stratum due to flood; by arranging the drainage box culvert on the drainage tunnel, the drainage box culvert can collect and discharge underground water through the drainage channel; the drainage channel is arranged at the drainage short of the drainage tunnel, and the height of the drainage channel and the height of the drainage tunnel are controlled, so that underground water around the tunnel can be effectively collected; by arranging the smoke exhaust section and the fan section in the drainage tunnel, the engineering cost can be reduced while effective smoke exhaust is carried out, and the drainage and smoke exhaust of the drainage tunnel can be integrated; by arranging the two drainage tunnels with opposite tunnel openings on one side of the tunnel, the construction difficulty can be reduced according to local conditions under the condition of maintaining the functions of the drainage tunnels; the air outlets of the exhaust pipes are communicated with the manway maintenance channel of the smoke exhaust section, and the air inlets of the exhaust pipes of the two sluices are respectively communicated with the two tunnel main holes in the opposite driving direction through the smoke exhaust channel, so that the two different sluices can be effectively utilized to quickly exhaust smoke for the different tunnel main holes respectively; in addition, through with two the sluicing hole sets up in same one side in tunnel, can be convenient for construct to reduce construction cost, avoided all excavating the condition in tunnel both sides.

From the perspective of practical value and economic value, the sluicing hole in the utility model has great practical value, the sluicing hole after the improvement in the utility model can drain a great deal of water to the tunnel of the water-rich stratum, therefore, when the tunnel is in the water-rich stratum, the sluicing hole is necessary after the improvement in the utility model in order to discharge the water around the tunnel; when the tunnel on the water-rich stratum is the extra-long tunnel, just need consider the smoke exhaust problem in tunnel emphatically, compare in the current engineering of discharging fume through setting up the inclined shaft, the utility model discloses make full use of the advantage of sluicing hole sets up to have the fan room the fan section, and will the fan room with tunnel owner hole passes through the exhaust passage intercommunication for the engineering cost greatly reduced that the engineering of discharging fume was spent.

In the creation process of the utility model, through calculation, in order to satisfy the fire working condition, smoke can be smoothly discharged along the smoke discharge channel, the fan section and the smoke discharge section in sequence, if a fan section with a length of 20-40m is arranged by means of the drainage tunnel, the fan rooms are additionally arranged on the drainage tunnel, the engineering cost increased by the fan rooms of each drainage tunnel is about 390 ten thousands, and the manufacturing cost increased by the fan rooms of two drainage tunnels is about 780 ten thousands in total; the two fan rooms are respectively communicated with the smoke exhaust channels of the main holes of different tunnels, the total length of the smoke exhaust channels is 120m in engineering, each linear meter of the smoke exhaust channels is 2.2 ten thousand yuan, and the manufacturing cost of the smoke exhaust channels is about 264 ten thousand in total, so that the engineering cost is increased by about 1044 ten thousand in total for discharging smoke in the extra-long tunnel on the basis of the drainage tunnel; and the engineering cost who sets up the inclined shaft is about 4000 ten thousand, the utility model discloses an engineering cost that consumes of discharging fume is less than the scheme that the inclined shaft was discharged fume far away, so, the utility model discloses still have very big economic value.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of a smoke discharging section in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a fan section according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a water discharge section according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a car avoidance area according to an embodiment of the present invention.

The reference numbers illustrate: the tunnel comprises a tunnel main tunnel 10, a drainage tunnel 20, a smoke exhaust section 21, a fan section 22, a prefabricated plate 221, a supporting part 222, a stand column 223, a fan room 224, an exhaust fan 2241, a drainage section 23, a first drainage channel 231, a second drainage channel 232, a diversion ditch 233, a diversion slope 234, a car avoidance area 235, a drainage box culvert 24, a pedestrian overhaul channel 25 and a smoke exhaust channel 30.

The purpose of the present invention, its functional features and advantages will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a novel drainage and smoke exhaust system suitable for extra long tunnel in rich water stratum, including setting up in two sluices 20 of tunnel with one side, make groundwater can be discharged in the environment that the tunnel was located, and, set up two with one side in the tunnel sluices 20 sets up, two sluices 20 all are located the side in tunnel, are convenient for discharge the peripheral water in tunnel, and further, two sluices 20 are located one side in tunnel, also are convenient for the construction of sluices 20 is built, and moreover, because not all areas can be with or need to link two sluices 20 into a whole, and in order to discharge as far as possible, set up two sluices 20, only need can expand the scope of drainage, again not too much occupy construction cost. The two drainage tunnels 20 can be generally respectively arranged close to the entrance of the tunnel main tunnel 10 and the exit of the tunnel main tunnel, in addition, the length of the drainage tunnel 20 is usually reasonably arranged according to the sectional water inflow of the tunnel, and the drainage section of the drainage tunnel 20 can be arranged on one side of the water head upstream of the underground water as required.

In order to ensure smoke exhaust and expand the drainage range convenient for the periphery of the tunnel, the two drainage holes 20 are sequentially arranged along the direction of the main tunnel 10 of the tunnel, and the directions of the openings of the two drainage holes 20 are opposite;

specifically, the drainage tunnel 20 includes a drainage box culvert 24 and a pedestrian overhaul channel 25 provided above the drainage box culvert 24, the drainage tunnel 20 is formed with a smoke exhaust section 21, a fan section 22 and a water drainage section 23 in sequence extending inward from the opening, and it should be noted that the smoke exhaust section 21, the fan section 22 and the drainage section 23 should be continuous in the drainage box culvert 24 and the pedestrian overhaul channel 25.

In order to realize effective drainage of the drainage tunnel 20 to the periphery of the tunnel, the drainage tunnel 20 is provided with a drainage channel for receiving external water at the position of the drainage section 23, a water outlet end of the drainage channel extends to the inside of the drainage box culvert 24, and a water inlet end of the drainage channel is higher than the water outlet end and is not higher than the road surface of the tunnel main tunnel 10, so that underground water at the periphery of the tunnel can be sufficiently drained, and the structural safety of the tunnel can be protected;

in order to perform low-cost smoke exhaust on the tunnel by combining with the drainage tunnel 20, the drainage tunnel 20 is provided with a fan room 224 at the position of the fan section 22, the fan room 224 is arranged above the pedestrian overhaul channel 25, and an exhaust pipe with an exhaust fan 2241 is installed; the air outlet of exhaust pipe with the section of discharging fume 21 the people overhauls the passageway 25 intercommunication, two the air intake of the exhaust pipe of sluicing hole 20 passes through the passageway 30 of discharging fume respectively with relative driving direction two the main hole 10 intercommunication in tunnel to can be with two smog in the main hole 10 in tunnel is respectively through the difference the sluicing hole 20 is discharged. Specifically, one tunnel generally has two main tunnel tunnels 10, the driving directions of the two main tunnel tunnels 10 are opposite, and the two main tunnel tunnels are respectively a left driving tunnel main tunnel 10 and a right driving tunnel main tunnel 10, wherein the left driving tunnel main tunnel 10 is communicated with an exhaust pipe of one sluicing tunnel 20 through one smoke exhaust channel 30, and the right driving tunnel main tunnel 10 is communicated with an exhaust pipe of the other sluicing tunnel 20 through the other smoke exhaust channel 30; it should be noted that the total design length of the two smoke evacuation channels 30 can be determined according to the actual situation of the tunnel, and the total design length of the two smoke evacuation channels 30 can be about 120m in the present embodiment.

It should be noted that, since the height of the manway 25 of the smoke exhaust section 21 of the drainage tunnel 20 is lower than the height of the fan room 224 of the fan section 22, the exhaust duct needs to be inclined downward at a certain angle when extending to the manway 25 close to the smoke exhaust section 21 in order to communicate the air outlet of the exhaust duct with the manway 25 of the smoke exhaust section 21. It should be noted that the smoke evacuation channel 30 needs to communicate with the upper part of the tunnel main tunnel 10, preferably near the top of the tunnel main tunnel 10, for effective smoke evacuation.

As a description of the above embodiment, the smoke exhaust section 21 is in communication with the exhaust duct of the fan section 22, and has the drain box culvert 24, and can be used for smoke exhaust and water drainage; the fan section 22 is used for discharging smoke in the tunnel main tunnel 10 to the smoke discharge section 21, and meanwhile, water can be discharged due to the existence of the water discharge box culvert 24; the drainage section 23 can be used for water collection and drainage due to the arrangement of the drainage channel and the drainage box culvert 24.

In addition, it should be noted that, in the above embodiment, the drainage box culvert 24 is further arranged to prevent the manway access passage 25 of the smoke exhaust section 21 from being too wet, so that the collected water can be relatively independently and uniformly discharged through the drainage box culvert 24, and the dry-wet separation of the smoke exhaust section 21 is realized, so as to avoid the influence on the smoke exhaust effect of the smoke exhaust section 21 due to the wet environment, and in addition, because the drainage tunnel 20 needs to be accessible for vehicles in the construction stage, the overall height of the drainage tunnel 20 is not greatly influenced no matter whether the drainage box culvert 24 is arranged, the dry-wet separation treatment by arranging the drainage box culvert 24 does not additionally increase too much cost, and the drainage box culvert 24 does not need too much cost compared with the whole project.

For the whole drainage tunnel, because of the requirement of the smoke exhaust engineering, the drainage box culvert 24 is added only in the drainage tunnel 20 (except for the position of the fan section 22, the overall height of other positions of the drainage tunnel 20 can be consistent), the fan room 224 is added at the higher part of the fan section 22, and the smoke exhaust channel 30 communicated with the fan room 224 is added; however, the cost of the drainage box culvert 24 is not so large, and the main function of the drainage box culvert 24 is to perform centralized drainage, so when considering the cost of the exhaust project, only the cost of the fan room 224 and the exhaust duct 30 needs to be considered heavily.

The workflow of the above embodiment is as follows: for an extra-long tunnel in a water-rich stratum, in order to effectively control the groundwater in the water-rich stratum, the groundwater in the tunnel and the periphery of the tunnel flows to the inside of the drainage box culvert 24 through the drainage channel, and the water inlet end of the drainage channel is not higher than the road surface of the main tunnel cave 10, so that the structure of the tunnel can be effectively protected when the groundwater is fully distributed to the inside of the drainage box culvert 24; when a fire disaster occurs in the extra-long tunnel of the water-rich stratum, in order to discharge the smoke in time, the opening of the exhaust fan 2241 in the fan room 224 needs to be controlled, so that the smoke is rapidly discharged through the smoke discharge passage 30, the exhaust pipe and the manway maintenance passage 25 of the smoke discharge section 21 in sequence; in addition, when personnel are required to enter the drainage tunnel 20 for operation in the construction stage and the later maintenance stage, the personnel can enter the drainage tunnel 20 through the pedestrian access passage 25 for construction and maintenance operation.

In order to further ensure the drainage of the groundwater below the road surface of the tunnel main hole 10, the top of the manway 25 is not higher than the road surface height of the tunnel main hole 10, i.e. the manway 25 and the drainage box culvert 24 are lower than the road surface height of the tunnel main hole 10 as a whole.

In order to collect the groundwater in the drainage section 23 of the drainage tunnel 20, the drainage channel includes a first drainage channel 231 which is arranged on the side wall of the manway access channel 25 and is communicated with the outside, and a second drainage channel 232 which is communicated with the manway access channel 25 and the drainage box culvert 24, and the second drainage channel 232 is arranged on two sides of the pavement of the manway access channel 25. It should be understood that the first drainage channel 231 may extend outwardly, and the first drainage channel 231 is generally plural and respectively dispersed through the side wall of the manway 25, and similarly, the second drainage channel 232 may also be plural.

The drainage channel can also be a drainage channel directly communicated with the drainage box culvert 24, however, when the drainage box culvert 24 is directly communicated with the outside through the drainage channel, it needs to be noticed that the water inlet position of the drainage channel is higher than the top height of the drainage box culvert 24 to prevent water from leaking, therefore, the mode of the first drainage channel 231 and the second drainage channel 232 can be generally adopted, if the collection of underground water is accelerated, a third drainage channel communicated with the outside and the drainage box culvert 24 can be directly added at the position of the side wall of the drainage box culvert 24, but it needs to be noticed that the water inlet end of the third drainage channel is higher than the top height of the drainage box culvert 24.

In order to facilitate the water flowing into the manway access channel 25 to flow into the drainage box culvert 24 and avoid a large amount of accumulated water generated in the manway access channel 25, the two sides of the pavement of the manway access channel 25 of the water drainage section 23 are both provided with water guide ditches 233, the pavement of the manway access channel 25 of the water drainage section 23 is provided with water guide slopes 234 extending from the middle of the pavement to the water guide ditches 233 obliquely downwards, so that the water on the bottom surface of the manway access channel 25 can flow into the water guide ditches 233, and the second water guide channel 232 is communicated with the water guide ditches 233 and the inside of the drainage box culvert, so that all the water in the manway access channel 25 can be guided into the drainage box culvert 24.

In order to facilitate smoke evacuation and to arrange the fan room 224, the height and the width of the spillway tunnel 20 on both sides of the fan section 22 are greater than the height and the width of the spillway tunnel 20 on both sides of the smoke evacuation section 21 and the water drainage section 23.

Since the manway 25 is not too wide, in order to facilitate the vehicle entering and exiting during the construction, the spillway tunnel 20 may be provided with at least two car avoidance areas 235 extending toward two side walls in the spillway section 23, such as: one of the escape areas 235 may be provided at an interval of 200m to facilitate construction of a project. Since the car avoidance area 235 also belongs to a part of the drainage tunnel 20, the drainage box culvert 24 and the pedestrian maintenance channel 25 are also reserved in the car avoidance area 235, and of course, the arrangement of the drainage section 23 may also be reserved, such as the first drainage channel 231, the drainage slope 234, the drainage ditch 233, and the second drainage channel 232.

In order to reduce the influence of the smoke evacuation channel 30 on the smoke evacuation distance, the connection between the smoke evacuation channel 30 and the tunnel main tunnel 10 may be arranged close to the fan section 22, and the length of the fan section 22 along the drainage tunnel 20 is 20-40 m.

It should be noted that the connection between the smoke evacuation channel 30 and the main tunnel cave 10 can be selected according to the actual requirement, and no matter which section of the main tunnel cave 10 is arranged, the cost is not increased, and the flexibility of the construction stage is increased while controlling the cost. The utility model discloses an in the creation process, through analog computation, to the long tunnel of 5.2km, smoke exhaust channel 30 with the intercommunication department in main hole 10 in tunnel with distance between the entrance to a cave of main hole 10 in tunnel is 400m, can effectively discharge fume.

As an alternative to the above embodiments, the exhaust fan 241 is a smoke exhaust axial flow fan to more conveniently exhaust smoke from the tunnel.

In order to be able to arrange the fan room 224 at the position of the fan section 22 while maintaining the drainage box culvert 24 and the manway 25 of the drainage tunnel 20 at the position, the fan room 224 needs to be firmly fixed above the manway 25 of the fan section 22, therefore, the bottom surface of the fan room 224 is provided with the prefabricated panels 221, the drainage tunnel 20 is provided with the supporting parts 222 for supporting the prefabricated panels 221 at both sides, and the upright 223 for supporting the prefabricated panels 221 is arranged between the bottom of the drainage tunnel 20 and the prefabricated panels 221.

In order to ensure uniform drainage of the spillway tunnel 20 to the periphery of the tunnel and to avoid increasing the cost of the spillway tunnel 20, the spillway tunnel 20 may be arranged parallel to the tunnel. It should be appreciated by those skilled in the art that since the tunnel is an extra long tunnel of 5km or more, the tunnel main hole 20 is generally in a herringbone slope shape, and the middle section of the tunnel main hole 10 is the highest point and has an uphill section and a downhill section. If the drainage section 23 of the drainage tunnel 20 is higher than the road surface of the tunnel main tunnel 10 at a certain position, drainage is affected; if the sluicing cave 20 is not arranged in parallel with the tunnel main tunnel 10, that is, the extending direction of the sluicing cave 20 is not consistent with the tunnel main tunnel 10, the excessive extension of the sluicing cave 20 and the reduction of the drainage efficiency of the periphery of the tunnel are caused, which increases the additional cost. Therefore, although the two drainage holes 20 are provided in the present invention, the drainage holes 20 are required to be provided in parallel with the main tunnel 10, and on this basis, it is preferable that: the other positions of the drain hole 20 except for the fan section 22 may be entirely lower than the road surface height of the tunnel main hole 10. Such as: when the road surface of the tunnel main tunnel 10 is a herringbone slope, the two drainage tunnels 20 can be selectively and respectively arranged in parallel with the uphill road surface and the downhill road surface of the tunnel main tunnel 10, so as to avoid reducing the drainage effect and increasing the cost of the drainage tunnels 20.

In order to make the smoke exhausting direction consistent with the driving direction and further ensure the safety of personnel, the smoke exhausting section 21 and the fan section 22 of the water drainage tunnel 20 are arranged close to the exit of the tunnel main tunnel 10, and the connection part of the smoke exhausting channel 30 and the tunnel main tunnel 10 is also arranged close to the exit of the tunnel main tunnel 10, it is required to know that the tunnel main tunnel 10 generally has an entrance and an exit which are respectively arranged at two ends of the tunnel main tunnel 10, and the entrance and the exit of different tunnel main tunnels 10 of the same tunnel are different in position and are required to be correspondingly constructed according to the actual condition of the tunnel.

Among the above technical solution of the utility model, above only be the utility model discloses a preferred embodiment, not consequently the restriction the utility model discloses a patent range, all be in the utility model discloses a under the technical concept, utilize the equivalent structure transform that the content was done in description and the attached drawing, or direct/indirect application all includes in other relevant technical field the utility model discloses a patent protection scope.

Claims (10)

1. A novel water and smoke discharging system suitable for a water-rich stratum extra-long tunnel is characterized by comprising two drainage holes arranged on the same side of the tunnel, wherein the two drainage holes are sequentially arranged along the direction of a main tunnel of the tunnel, and the directions of the openings of the two drainage holes are opposite;

the drainage tunnel comprises a drainage box culvert and a pedestrian overhaul channel arranged above the drainage box culvert, wherein the drainage tunnel is internally provided with a smoke exhaust section, a fan section and a water drainage section which are sequentially formed from the opening of the tunnel to the inside in an inward extending mode, the drainage tunnel is provided with a drainage channel for receiving external water at the position of the water drainage section, the water outlet end of the drainage channel extends to the inside of the drainage box culvert, and the water inlet end of the drainage channel is higher than the water outlet end and is not higher than the road surface of the main tunnel cave;

the drainage tunnel is provided with a fan room at the position of the fan section, the fan room is arranged above the manway overhaul channel and is provided with an exhaust pipe with an exhaust fan; the air outlet of the exhaust pipe is communicated with the pedestrian overhaul channel of the smoke exhaust section, and the air inlets of the exhaust pipes of the two drainage tunnels are respectively communicated with the two tunnel main tunnels in the opposite driving direction through the smoke exhaust channel.

2. The novel water and smoke discharging system applicable to the extra-long tunnel of the water-rich stratum as claimed in claim 1, wherein the top of the manway access channel is not higher than the road surface height of the main tunnel hole.

3. The novel water and smoke discharging system suitable for the water-rich stratum extra-long tunnel according to claim 1, wherein the water draining channel comprises a first water draining channel which is arranged on the side wall of the manway access channel and communicated with the outside, and a second water draining channel which is communicated with the manway access channel and the water draining box culvert, and the second water draining channel is arranged on two sides of the road surface of the manway access channel.

4. The novel water and smoke discharging system suitable for the extra-long tunnel of the water-rich stratum as claimed in claim 3, wherein the two sides of the pavement of the manway access passage of the water drainage section are provided with water guide ditches, the pavement of the manway access passage of the water drainage section is formed with water guide slopes obliquely extending downwards from the middle of the pavement to the water guide ditches on the two sides, and the second water drainage channel is communicated with the water guide ditches and the inside of the water drainage culvert box.

5. The novel water and smoke discharging system suitable for the water-rich stratum extra-long tunnel according to claim 1, wherein the height and the width of the water drainage tunnel at the two sides of the fan section are larger than the height and the width of the water drainage tunnel at the two sides of the smoke discharging section and the water drainage section.

6. The novel water and smoke discharging system suitable for the water-rich stratum extra-long tunnel according to claim 1, wherein the drainage tunnel is provided with at least two vehicle avoiding areas extending towards two side walls respectively at the drainage section.

7. The novel water and smoke discharging system suitable for the extra-long tunnel of the water-rich stratum as claimed in claim 1, wherein the connection between the smoke discharging channel and the main tunnel of the tunnel is arranged close to the fan section, and the length of the fan section along the drainage tunnel is 20-40 m.

8. The novel water and smoke exhaust system applicable to the water-rich stratum extra-long tunnel according to claim 7, wherein the exhaust fan is a smoke exhaust axial flow fan.

9. The novel water and smoke discharging system suitable for the water-rich stratum extra-long tunnel according to claim 1, wherein prefabricated plates are arranged on the bottom surface of the fan room, supporting portions for supporting the prefabricated plates are arranged on two sides of the drainage tunnel, and a stand column for supporting the prefabricated plates is arranged between the bottom of the drainage tunnel and the prefabricated plates.

10. The novel water and smoke discharging system suitable for the water-rich stratum extra-long tunnel according to any one of claims 1 to 9, wherein the drainage tunnel is arranged in parallel with the tunnel, the smoke discharging section and the fan section of the drainage tunnel are arranged near the exit of the main tunnel, and the connection between the smoke discharging channel and the main tunnel is also arranged near the exit of the main tunnel.

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