CN217152024U - Tunnel drainage system - Google Patents

Abstract

The utility model relates to a tunnel drainage system, include the first drainage channel that sets up along tunnel extending direction and the second drainage channel who is independent of first drainage channel, its characterized in that: a first inspection well and a second inspection well are arranged on the first drainage channel and the second drainage channel, and a blocking piece is arranged at the top of the first inspection well and surrounds a first wellhead; compared with the prior art, the utility model has the advantages of: realize separately discharging of surface gathered water and secret infiltration through setting up first discharge passage and second discharge passage, and set up first inspection shaft and second inspection shaft on first discharge passage and second discharge passage respectively, can make things convenient for tunnel maintainer to carry out the inspection to first discharge passage and second discharge passage and maintain, avoid first discharge passage and second discharge passage to take place to block up, encircle first well head setting at first inspection shaft top and can block the piece that surface gathered water got into first inspection shaft, thereby avoid surface gathered water to permeate in the first inspection shaft.

Description

Tunnel drainage system

Technical Field

The utility model relates to a tunnel and underground works technical field, concretely relates to tunnel drainage system.

Background

The tunnel drainage engineering is one of the main contents of tunnel safety operation, wherein the drainage engineering mainly relies on circumferential drainage pipes, longitudinal drainage pipes, transverse drainage pipes, side ditches, central drainage ditches and the like to form a drainage system.

The water in the tunnel mainly comprises the area of a rainy road and underground seepage water at the back of the lining, and in the past, the tunnel drainage engineering only needs to empty water to prevent water accumulation in the tunnel and can meet the design requirement; however, with the rapid development of social economy, the environmental protection concept is gradually deepened, and the design of tunnel drainage engineering also needs to meet the environmental protection requirement; because the surface gathered water directly contacts with the outside, the surface gathered water can be considered as polluted water, and the underground seepage water at the back of the lining is clean water; for this reason, from the viewpoint of environmental protection, it is necessary to separately discharge both of them, for example, chinese patent publication No. CN202011333213.8, a prefabricated sewage-cleaning separated side type sewer manhole and cover plate, discloses a sewer manhole, which is disposed below a tunnel lane and closely attached to a side of a tunnel roadside access way, a manhole opening is disposed at one side of an upper portion of the manhole, a transverse water guide pipe is disposed at a lower portion of the manhole to collect underground water seepage, the manhole cover plate is closely attached to the manhole opening and closed, a groove is formed on an upper surface of the manhole cover plate and is directly connected to a long sewage-discharging side ditch on the side of the tunnel, and also serves as a sewage-discharging side ditch, although the sewer manhole realizes separate discharge of surface water and underground water seepage, because the sewage-discharging side ditch is disposed on the manhole cover plate, when the surface water is discharged, the surface water is likely to leak into the manhole from a gap between the manhole cover plate and the manhole opening, thereby polluting the underground seepage water and leading the ditch inspection well to lose the function of separately discharging the surface seeper and the underground seepage water; for this reason, further improvements in the prior art are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a tunnel drainage system that can avoid surface gathered water seepage is satisfying separately under the prerequisite of discharging surface gathered water and secret infiltration to foretell technical current situation and providing one kind.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this tunnel drainage system, including set up and be linked together behind the lining cutting along tunnel extending direction with the first drainage channel that is used for discharging secret infiltration water, and be independent of first drainage channel is used for discharging the second drainage channel of surface gathered water, its characterized in that: first drainage channel with be provided with first inspection shaft and the second inspection shaft that is used for the inspection to maintain on the second drainage channel, first inspection shaft top is provided with around first well head and is used for blockking that surface gathered water gets into the piece is blockked of first inspection shaft.

Because the mode that blocks that surface gathered water gets into first inspection shaft has the multiple, for example heighten first well head and make first well head be higher than the road surface to form the slope with the road surface, perhaps encircle and set up the structure that can drain around first well head, consider from simple prescription conveniently ground angle, preferably, first drainage channel with second drainage channel sets up side by side, and every interval predetermines the distance and is provided with the one-to-one first inspection shaft with the second inspection shaft, it includes to the sunken cell body that just the cross-section is "U" shape below the road surface to block, the cell body encircles around the first well head of first inspection shaft, the cell body is corresponding with this first inspection shaft the second inspection shaft is linked together to introduce surface gathered water in the second inspection shaft. Set up around first well head to the below sunken cell body in road surface for the surface gathered water of the first well head of flow direction flows into in the cell body, has cut rivers, thereby has played the effect that blocks surface gathered water, and in addition, the cell body is linked together with the second inspection shaft, makes the rivers that flow into in the cell body discharge in can following the second inspection shaft, avoids the surface gathered water in the cell body to spill over.

In order to better prevent water in the road area from entering the first inspection well, the inspection well preferably further comprises a first cover plate used for covering the first wellhead, and a first placing part used for placing the first cover plate is arranged on the circumferential well wall of the first wellhead. The first cover plate is arranged, so that the first inspection well is relatively sealed, the situation that surface water splashes into the first inspection well when a vehicle runs by is prevented, and the first placing part is arranged to enable the first cover plate to be better combined with the first wellhead.

In order to prevent impurities from entering the second inspection well to block the second inspection well, preferably, a second placing part for placing a second cover plate is arranged on a circumferential well wall of a second well mouth of the second inspection well, and at least one water inlet hole for allowing surface water to enter the second inspection well through the second cover plate is arranged on the second cover plate.

For the area that has abundant groundwater, the flow of secret infiltration water can exceed first drainage channel's capacity to lead to secret infiltration water to spill over first drainage channel, in order to discharge underground infiltration water better in rich water area, preferably, first drainage channel bottom to second drainage channel bottom extends there is the dilatation passageway that is used for the dilatation first drainage channel.

Because the second drainage channel is arranged above the expansion channel, in order to strengthen the structure of the expansion channel, preferably, a reinforcing piece for strengthening the structural strength of the expansion channel is arranged on the expansion channel. The reinforcing piece is arranged to prevent the second drainage channel from being too heavy to collapse and expand the channel.

In order to better enhance the structural strength of the expansion channel, preferably, the expansion channel and the first drainage channel have a cross section in a transverse T shape, and the reinforcing member is in a rod shape and is disposed in a region where the expansion channel and the first drainage channel are connected. The dilatation passageway and the first drainage channel that the cross-section is horizontal "T" shape can make the impurity in the groundwater only deposit in first drainage channel, make things convenient for the maintenance clearance in later stage.

For convenience of construction, it is preferable that the first and second drainage passages are combined by at least two drainage units and at least one inspection unit having the first and second inspection wells, one inspection unit being provided every other at least one drainage unit. Through prefabricated drainage unit and inspection unit before the construction, and directly set up first drainage channel and second drainage channel on the drainage unit for only need put into corresponding unit as required and can accomplish the construction fast when the construction, accelerated the speed of construction greatly.

In order to prevent leakage between adjacent two drainage cells or between adjacent drainage cells and inspection cells, it is preferable that the second drainage passages between adjacent two of the drainage cells or between adjacent drainage cells and inspection cells communicate through a longitudinal drainage pipe.

Compared with the prior art, the utility model has the advantages of: realize separately discharging of surface gathered water and secret infiltration through setting up first discharge passage and second discharge passage, and set up first inspection shaft and second inspection shaft on first discharge passage and second discharge passage respectively, can make things convenient for tunnel maintainer to carry out the inspection to first discharge passage and second discharge passage and maintain, avoid first discharge passage and second discharge passage to take place to block up, encircle first well head setting at first inspection shaft top and can block the piece that surface gathered water got into first inspection shaft, thereby avoid surface gathered water to permeate in the first inspection shaft.

Drawings

FIG. 1 is a cross-sectional view of a discharge unit in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an inspection unit in an embodiment of the present invention;

fig. 3 is a top view of a tunnel drainage system in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a discharge unit with an expansion channel in an embodiment of the present invention;

fig. 5 is a cross-sectional view of an inspection unit with an expansion channel according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in FIGS. 1 to 5, the preferred embodiment of the present invention is shown. The tunnel drainage system of the embodiment comprises a first drainage channel 2, a second drainage channel 3 and a blocking piece 4; the first drainage channel 2 is arranged along the extending direction of the tunnel and communicated with the back of the lining 1, the first drainage channel 2 is used for draining underground seepage water, and the first drainage channel 2 is provided with a first inspection well 21 for inspection and maintenance; the second drainage channel 3 is independent of the first drainage channel 2 and is used for draining the surface water, and similarly, a second inspection well 31 is arranged on the second drainage channel 3; the blocking member 4 is arranged around the first well mouth 211 at the top of the first inspection well 21 for blocking the surface water from entering the first inspection well 21, and there are various ways for blocking the surface water from entering the first inspection well 21, for example, the first well mouth 211 is heightened to make the first well mouth 211 higher than the road surface, so as to form a slope with the road surface, or a structure capable of draining water is arranged around the first well mouth 211, but from the simple and convenient point of view, the blocking member 4 of the present embodiment includes a groove body 41 which is concave below the road surface and has a "U" shape in cross section, so as to avoid the water in the groove body 41 from overflowing, the present embodiment arranges the first drainage channel 2 and the second drainage channel 3 side by side, and a first inspection well 21 and a second inspection well 31 which are one-to-one corresponding to each other are arranged at a preset distance, so that the groove body 41 which is arranged around the first well mouth 211 of the first inspection well 21 is communicated with the second inspection well 31 which is corresponding to the first inspection well 21, thereby introducing surface water into the second manhole 31. Wherein, set up the cell body 41 to the below sunken of road surface around first well head 211 for the surface gathered water of flow direction first well head 211 has cut rivers in flowing into cell body 41, thereby has played the effect of blockking surface gathered water.

In order to prevent the surface water from splashing into the first inspection well 21 when the vehicle passes by, the present embodiment further provides the following structure, specifically, the present embodiment further includes a first cover plate 22 for covering the first well opening 211, and a first resting portion 212 for resting the first cover plate 22 is arranged on a circumferential well wall of the first well opening 211. The first cover plate 22 is arranged to enable the first inspection well 21 to be relatively sealed, so that the water on the surface of the road is prevented from splashing into the first inspection well 21, and the first placing part 212 is arranged to enable the first cover plate 22 to be better combined with the first wellhead 211; the second cover plate 32 is also arranged on the second inspection well 31, a plurality of water inlet holes 321 for allowing the surface water to enter the second inspection well 31 through the second cover plate 32 are formed in the second cover plate 32, the second cover plate 32 can be arranged to filter the surface water, so that impurities are prevented from entering the second inspection well 31 to block the second inspection well 31, and correspondingly, a second placing part 312 for placing the second cover plate 32 is arranged on the circumferential well wall of a second well mouth 311 of the second inspection well 31.

In addition, for the area with abundant groundwater, the flow of the groundwater may exceed the capacity of the first drainage channel 2, thereby causing the groundwater to overflow the first drainage channel 2, in order to better discharge the groundwater in the water-rich area, the present embodiment adopts the following structure to realize: in the embodiment, the expansion channel 23 for expanding the volume of the first drainage channel 2 extends from the bottom of the first drainage channel 2 to the bottom of the second drainage channel 3, and the cross sections of the expansion channel 23 and the first drainage channel 2 are in a transverse T shape, so that impurities in underground seepage are only deposited in the first drainage channel 2, and later maintenance and cleaning are facilitated; since the second drainage channel 3 is located above the expansion channel 23, in order to strengthen the structure of the expansion channel 23 and prevent the expansion channel 23 from collapsing due to the overweight of the second drainage channel 3, a rod-shaped reinforcing member 231 is disposed in the connection region between the expansion channel 23 and the first drainage channel 2.

Finally, in order to facilitate the construction, the following measures are adopted in the embodiment: the first drainage channel 2 and the second drainage channel 3 of the present embodiment are formed by combining at least two drainage cells a and at least one inspection cell b having a first inspection well 21 and a second inspection well 31, one inspection cell b being provided every other at least one drainage cell a; in order to prevent leakage between the adjacent two drainage cells a or between the adjacent drainage cells a and the inspection cell b, the second drainage channels 3 between the adjacent two drainage cells a or between the adjacent drainage cells a and the inspection cell b are communicated through the longitudinal drainage pipes 5. Through prefabricated drainage cell a and inspection cell b before the construction, and directly set up first drainage channel 2 and second drainage channel 3 on drainage cell a for only need put into corresponding unit and can accomplish the construction fast as required when the construction, accelerated the speed of construction greatly.

To sum up, the construction process and the drainage process of the tunnel drainage system are as follows:

A. during construction, selecting a corresponding drainage unit a and a corresponding inspection unit b according to design requirements;

B. after the lining 1 is constructed, pouring a pavement cushion layer, and reserving an installation space at the moment;

C. laying a 5cm sand layer as a leveling layer at the reserved installation space position, sequentially installing and connecting a drainage unit a or an inspection unit b, extending a PVC longitudinal drainage pipe 5 into a second drainage channel 3 during installation, and performing waterproof treatment on a pipeline to finish the installation of the tunnel drainage system;

D. perforating the side wall of the first inspection well 21, and filling a pipeline communicated with the back of the lining 1, so that underground seepage water behind the back of the lining 1 can flow into the first inspection well 21 through the pipeline;

E. pouring a cement concrete cushion layer to fix the tunnel drainage system;

F. pouring reinforced concrete pavement and asphalt pavement;

G. during drainage, most of the surface water directly flows into the second inspection well 31 through the water inlet 321 of the second cover plate 32, a small part of the surface water flowing to the first inspection well 21 is intercepted by the groove body 41 and is introduced into the second inspection well 31, and the direction of a hollow arrow in fig. 3 is the flow direction of the intercepted surface water;

H. the underground seepage water behind the lining 1 flows into the first manhole 21 through a pipe.

Claims (9)

1. The utility model provides a tunnel drainage system, includes along the tunnel extending direction setting and with lining cutting (1) be linked together behind one's back in order to be used for discharging first drainage channel (2) of secret infiltration water, and be independent of first drainage channel (2) and second drainage channel (3) that are used for discharging surface gathered water, its characterized in that: first drainage channel (2) with be provided with first inspection shaft (21) and second inspection shaft (31) that are used for the inspection to maintain on second drainage channel (3), first inspection shaft (21) top is provided with around first well head (211) and is used for blockking surface ponding entering stop (4) of first inspection shaft (21).

2. The tunnel drainage system of claim 1, wherein: first drainage channel (2) with second drainage channel (3) set up side by side, and every interval is predetermine the distance and is provided with the one-to-one first inspection shaft (21) with second inspection shaft (31), it includes to the below sunken cell body (41) that just the cross-section is "U" shape of road surface to block piece (4), cell body (41) encircle around first well head (211) of first inspection shaft (21), cell body (41) and this first inspection shaft (21) are corresponding second inspection shaft (31) are linked together to introduce surface gathered water in second inspection shaft (31).

3. The tunnel drainage system of claim 2, wherein: the well head further comprises a first cover plate (22) used for covering the first well head (211), and a first placing part (212) used for placing the first cover plate (22) is arranged on the circumferential well wall of the first well head (211).

4. The tunnel drainage system of claim 3, wherein: a second placing part (312) for placing a second cover plate (32) is arranged on the circumferential well wall of a second wellhead (311) of the second inspection well (31), and at least one water inlet hole (321) for enabling surface water to enter the second inspection well (31) through the second cover plate (32) is formed in the second cover plate (32).

5. The tunnel drainage system of claim 4, wherein: the bottom of the first drainage channel (2) extends to the bottom of the second drainage channel (3) to form an expansion channel (23) for expanding the capacity of the first drainage channel (2).

6. The tunnel drainage system of claim 5, wherein: and a reinforcing piece (231) for reinforcing the structural strength of the expansion channel (23) is arranged on the expansion channel.

7. The tunnel drainage system of claim 6, wherein: the cross sections of the expansion channel (23) and the first drainage channel (2) are in a transverse T shape, and the reinforcing piece (231) is in a rod shape and is arranged in the area where the expansion channel (23) is connected with the first drainage channel (2).

8. The tunnel drainage system of any one of claims 1 to 7, wherein: the first drainage channel (2) and the second drainage channel (3) are formed by combining at least two drainage units (a) and at least one inspection unit (b) with the first inspection well (21) and the second inspection well (31), and the inspection unit (b) is arranged at intervals of at least one drainage unit (a).

9. The tunnel drainage system of claim 8, wherein: the second drainage channels (3) between two adjacent drainage units (a) or between the adjacent drainage units (a) and the inspection unit (b) are communicated through a longitudinal drainage pipe (5).

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