JPH0830400B2 - Drainage structure of leaked water in tunnel and sealing member used therefor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for leaking water in a tunnel and a seal member used therefor.

[0002]

2. Description of the Related Art In the case of constructing a tunnel by concrete casting, hitch joints are conventionally formed at regular intervals in the longitudinal direction of the tunnel. Water leakage often occurs in the tunnel, but the water leakage comes out from this joint portion into the tunnel. FIG. 10 shows a method proposed as a method of guiding the water leaking from the joint portion into the tunnel side wall and discharging the leaked water from the gutter provided on the side of the tunnel without discharging the leaked water into the tunnel ( Japanese Patent Publication Sho 56-2879
Issue).

FIG. 10 is a sectional view showing the vicinity of the joint 5 of the tunnel. The conventional water leakage prevention method is the joint 5 of the tunnel.
Concrete spouting is performed so as to form a recess 6 having a U-shaped cross section, and the sponge rubber 7 is attached to the recess 6 with a gap. As shown in the figure, the sponge rubber 7 is press-fitted into the recess 6 such that the outer surface thereof is flush with the inner surface of the tunnel, and is adhered to the inner wall of the recess 6 to shield the interior of the recess 6 from the outside air. The inside of the recess 6 sealed by the sponge rubber 7 serves as a water conduit for flowing water leaking from the splice seam 5. Since the joints are continuously connected from one side wall of the tunnel to the other side wall around the ceiling part, the sponge rubber 7 is attached over the entire length of the joint part, and the water leaked into the recess 7 is directed toward the side wall of the tunnel. To prevent water from falling into the tunnel.

[0004]

By the way, at present, in the case of tunnel construction, as mentioned above, a method of performing concrete pouring without forming a joint at predetermined intervals is performed. In the case of this construction method, the above-mentioned problem of water leakage at the joint portion does not occur, but the problem of water leakage inside the tunnel due to cracks in the concrete inner wall similarly occurs. Figure 2
Shows the state of the side wall of the tunnel inner wall formed by the current tunnel construction as seen from the front. In the figure, 10 indicates a drainage groove provided on the inner wall of the tunnel. The drainage groove 10 is provided to guide the water leakage generated in the tunnel toward the side wall of the tunnel, and is formed in a continuous groove shape on the inner surface of the tunnel by connecting the side wall and the arched ceiling. It should be noted that the drainage groove 10 also has a function of preventing a continuous crack when the inner wall of the tunnel is cracked.

In the example shown in FIG. 2, the drain groove 10 has a side wall portion A.
Then, it branches into a T-shape once and further connects to the side groove 12. As described above, even in the case of the current construction method, the drainage groove is formed on the inner wall of the tunnel to guide the leaked water toward the side wall. However, as in the conventional case, sponge rubber is attached to the front surface of the drainage groove 10 to guide the water. However, there are the following problems.

That is, the groundwater is relatively warm in the tunnel and the groundwater does not freeze, but in cold regions or the like, the temperature may drop considerably due to the involvement of external cold air at the entrance or exit of the tunnel. In such a case, the water flowing into the drainage channel freezes in the drainage channel and obstructs the drainage, making it impossible to drain the water. In some cases, the ice entering the drainage channel expands and bursts. The problem arises. As shown in FIG. 10, in the case where the sponge rubber is attached to the front surface of the drainage groove, the heat insulation in the drainage groove is not sufficient, and the spillage tends to freeze in the drainage groove. In addition, when hard plastic is used to improve the flowability of water in the drain, thermal expansion,
There is a problem that the quality may be deteriorated and destroyed by the heat shrinkage. In addition, as shown in FIG.
If 0 is connected in a T-shape, there arises a problem that drainage accumulates at a branch point and water flows down from a portion other than the drainage groove, and it becomes impossible to guide the drainage to the side groove 12.

Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to accurately guide leakage of water in a tunnel to the side wall of the tunnel without freezing in the drain. Can be drained and
An object of the present invention is to provide a drainage structure for leaking water in a tunnel, which can be easily installed in a tunnel, has excellent durability, and is easy to handle, and a sealing member used therefor.

[0008]

The present invention has the following constitution in order to achieve the above object. That is, a drainage structure for leaking water in a tunnel in which a drainage groove having a concave groove is provided at an arbitrary position on the inner wall surface of the tunnel, and is made of a hard material such as plastic with a U-shaped cross section and a smooth inner surface. An inner surface material and a sealing member composed of an outer surface material having both heat insulation and flexibility such as sponge rubber covering the outer surface of the inner surface material excluding the inner surface, so as to block the open surface of the drainage groove,
It is characterized in that the open surface of the seal member is attached to the drainage groove toward the inner wall surface side of the tunnel, and a drainage channel is provided in which the outer surface material of the seal member is brought into close contact with both inner sidewalls of the drainage groove. In addition, there is a drainage structure for leaking water in the tunnel in which a drainage channel is provided on the inner wall surface of the tunnel by a member having a U-shaped cross section, and the drainage channel is formed in a U-shaped cross-section, and the inner surface is made of a plastic or the like having a smooth surface. A hard inner surface material consisting of
A seal member composed of an outer surface material having both heat insulating properties and flexibility such as sponge rubber covering the outer surface of the inner surface material excluding the inner surface is provided, and the open surface of the sealing member is directed to the tunnel inner wall surface side. Formed by attaching to the position of and
A part of the outer surface material of the seal member is formed with the drainage channel.
It is characterized by being closely attached to the inner wall surface of the tunnel .
Further, a sealing member used in the structure for draining water in the tunnel, the hard inner surface member made of plastic or the like having a U-shaped cross section and having a smooth inner surface through which water flows, and the inner surface excluding the inner surface. It is characterized by comprising an outer surface material having both heat insulating properties and flexibility such as sponge rubber covering the outer surface of the material.

[0009]

[Operation] A U-shaped cross section is formed in the drainage groove on the inner wall of the tunnel.
The inner surface is made of plastic or the like with a smooth surface.
A hard inner surface material and a cover that covers the outer surface of the inner surface material excluding the inner surface.
An outer surface material having both heat insulation and flexibility such as pond rubber
By installing a seal member composed of
The surface material blocks the drainage groove from cold air etc., and flows down in the drainage groove.
Water to prevent freezing, and to protect the inner surface material.
To protect the inner surface material and other sealing members due to thermal expansion and contraction.
Can be prevented. In addition, the inner surface is smooth and hard
As it is made of wood, it improves the flowability of water.
Can be In addition, the outer surface of the hard inner surface material has heat insulation
Because it is covered with an outer material that has both flexibility,
Inner wall and tongue of the recessed drainage provided on the inner wall of the tunnel
Easily install a seal member on the cracked part on the inner wall of the flannel
To the drainage channel at any position on the inner wall of the tunnel.
Can be provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an entire configuration of an example of a train tunnel as a drainage structure for leaking water in a tunnel according to the present invention. The drainage groove 10 is continuously formed continuously in the circumferential direction of the inner surface of the tunnel as shown in the figure. The drainage groove 10 is formed in a U-shaped cross section, and the width and depth of the groove are both about 10 cm.
Is. FIG. 2 shows a state in which the inner wall surface of the tunnel is viewed from the direction B in FIG. The drainage groove 10 is continuous in an arch shape on the ceiling side of the tunnel, and branches at the side wall portion A as shown in the figure to communicate with the side groove 12.

The water flowing into the gutter 12 flows into a subterranean drainage groove 14 buried in the ground as shown in FIG. 1 and is discharged. FIG. 3 shows the connecting portion of the drain from the side wall of the tunnel to the gutter 12. The drainage groove 10 descending from the arch portion once contacts the horizontal groove 10a, and then branches into two to form the vertical groove 1
Contact the gutter 12 from 0b.

As shown in FIG. 4, the drainage structure according to the present invention is characterized in that a seal member 16 having a U-shaped cross section is attached in the drainage groove 10 so as to cover the open front surface of the drainage groove 10. The seal member 16 having a U-shaped cross section is formed to have a size that can be fitted into the drain groove 10 according to the width and the depth of the drain groove 10. The inner surface member 16a exposed inside the drain groove 10 has water flowing down. A smooth material such as a plastic or a metal plate suitable for the above is used, and a sponge rubber having heat insulating property and flexibility is used as the outer surface material 16b in contact with the inner wall of the drainage groove 10. Of course, the outer surface material 16b is not limited to the sponge rubber as long as it has a heat insulating property and flexibility.

When the seal member 16 is attached to the drain groove 10, the U-shaped open surface is fitted into the drain groove 10 with the open surface facing the inner side of the drain groove 10, and the outer surface of the seal member 16 and the inner wall of the drain groove 10 are inserted. Adhere between and with adhesive. FIG. 4 shows a state in which the seal member 16 is attached inside the drain groove 10. With the seal member 16 installed in the drainage groove 10, the outer surface material 16
The depth of the seal member 16 is set in advance so that b and the inner surface of the tunnel are flush with each other. As a result, the seal member 16 can be attached so as to be pushed into the drainage groove 10 so as to be flush with the inner surface of the tunnel.

The seal member 16 is attached to the entire drainage groove 10 formed on the inner wall of the tunnel as described above. In the case of the embodiment, since it is necessary to connect the seal member 16 attached to the arch portion to the lateral groove 10a at the side wall portion, the seal member 1 attached to the lateral groove 10a as shown in FIG.
A communication hole is provided on the side surface of 6 to connect the vertical sealing member 16. It should be noted that the seal member 1 is attached to the arch portion or the like.
In the case of attaching 6 as well, they may be attached as a series of one body, or a plurality of sealing members 16 may be connected to form a series. In this way, by attaching the seal member 16 to the drainage groove 10 in the tunnel, the drainage groove 10 becomes a sealed space that blocks the outside air by the seal member 16, and the drainage groove 10 suitably functions as a drainage channel for flowing the leaked water. To do.

The sealing member 16 of the present embodiment does not seal only the open surface of the front face of the drainage groove 10, but rather the drainage groove 10
Since both side surfaces of the drainage groove 10 are sealed and attached, the drainage groove 10 has a good sealing property, and the three surfaces of the drainage groove 10 are covered with the outer surface material 16b having a heat insulating property.
The heat insulation in the inside becomes good, and even if the temperature inside the tunnel is lowered by the outside air, the inside of the drainage groove 10 is preferably insulated,
It is possible to maintain the flow of water in the drainage channel 10.
Further, by covering the seal member 16 with the heat-insulating and flexible outer surface member 16b, when the seal member 16 is attached to the drainage groove 10, the outer surface member 16b acts as a cushioning material, and thermal expansion and contraction Seal member 1
The external force acting on 6 can be effectively absorbed, the seal member 16 can be prevented from deteriorating, and the durability can be improved. Even when a hard plastic having good smoothness is used as the inner surface material 16a of the seal member 16, the inner surface material 16a can be prevented from being chipped by using a two-layer structure with the outer surface material 16b, and drainage can be prevented. It is extremely easy to handle as a sealing member for the groove 10.

Further, in the conventional sealing method, when water flows through the drain groove 10, if the drain groove 10 is cracked or the like, water may leak from the cracked portion to the outside. In the case of the example, since the inner wall of the drainage groove 10 is sealed by the side surface of the seal member 10, the distance until the water flowing through the drainage groove 10 seeps out becomes long, and the seepage can be effectively prevented. it can.

The above embodiment is an example in which the drainage groove 10 is provided in advance on the inner wall of the tunnel, and a gutter-shaped seal member is attached to the drainage groove 10. However, in some cases, a crack or the like occurs in the tunnel. In this case, it may be used for the purpose of partially attaching a seal member to prevent water leakage. 6 and 7 show cracks on the inner wall surface of the tunnel.
The seal member 16 is installed in the recessed groove 20 formed in the bent portion.
This is an example in which a drainage channel is formed by attaching them. This seal member 1
6 is a U-shaped section similar to the seal member 16 shown in FIG.
Is the plastic formed on the inner surface of the surface smooth?
The outer surface of the hard inner surface member 16a is made of heat insulating material and flexibility.
By the outer surface material 16b made of sponge rubber having both
It is covered. The seal member 16 is
Insert the open side of the
The outer surface of the outer surface member 16b and the inner wall surface of the concave groove 20 are in close contact with each other.
The drainage channel is formed. 8 and 9 are
A concave groove is provided on the inner wall surface of the tunnel where cracks have occurred.
First, directly attach the seal member 16 to form the drainage channel.
It is an example. Also in this example, the seal member 16 is
Similar to the seal member 16 shown in FIG. 4, formed in a U-shaped cross section
Made of plastic whose inner surface is smooth
The outer surface of the hard inner surface material 16a has both heat insulation and flexibility.
Covered by an outer surface material 16b made of sponge rubber
It is what The seal member 16 is opened
Face the inner wall surface side of the tunnel where cracks have occurred.
By attaching it, a drainage channel is formed. These Figure 8,
Of FIG. 9, FIG. 8 shows the inner wall surface of the tunnel where the drainage channel is provided.
Insert the side edge of the seal member 16 into the formed narrow groove 18.
And a drainage channel is formed on the outer surface of the seal member 16.
Part of the material 16b is the inner wall surface of the narrow groove 18 and the inner wall surface of the tunnel.
It is in close contact with. On the other hand, FIG.
The extending portion 22 provided by extending a part of the outer surface material 16b is
A drainage channel was formed by closely contacting the inner wall surface of the tunnel.
Therefore, it is necessary to form the narrow groove 18 on the inner wall surface of the tunnel.
It can form a drainage channel.

[0018]

According to the drainage structure for leaking water in the tunnel according to the present invention, the leaked water generated in the tunnel can be surely discharged through the drainage channel, and the water conduit for discharging the leaked water can be simplified. Can be provided. Further, by using the seal member according to the present invention, it is possible to protect the drainage groove from a low temperature, allow the water to flow down without freezing in the drainage groove, and improve the durability of the seal member. Play.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall structure in which a drainage groove is provided in a tunnel.

FIG. 2 is an explanatory view showing an example of forming drainage grooves provided on a wall surface of a tunnel.

FIG. 3 is an explanatory view showing a connecting portion between a drain groove and a side groove.

FIG. 4 is an explanatory view showing a state in which a seal member is attached in the drain groove.

FIG. 5 is an explanatory diagram showing a method of connecting a vertical seal member and a horizontal seal member.

FIG. 6 is an explanatory view showing an example of mounting a seal member.

FIG. 7 is an explanatory view showing an example of mounting a seal member.

FIG. 8 is an explanatory view showing an example of mounting a seal member.

FIG. 9 is an explanatory view showing an example of mounting a seal member.

FIG. 10 is an explanatory diagram showing an example of attachment of a conventional seal member in a drain groove.

[Explanation of symbols]

 5 Joints 6 Recesses 7 Sponge rubber 10 Drainage grooves 10a Horizontal grooves 10b Vertical grooves 12 Side grooves 14 Underground drainage grooves 16 Sealing members 16a Inner surface materials 16b Outer surface materials 18 Fine grooves

Claims (4)

[Claims] 1. A drainage structure for leaking water in a tunnel, wherein a drainage groove having a concave groove is provided at an arbitrary position on the inner wall surface of the tunnel. The structure is formed from a plastic or the like having a U-shaped cross section and a smooth inner surface. A sealing member composed of a hard inner surface material and an outer surface material having both heat insulation and flexibility such as sponge rubber covering the outer surface of the inner surface material excluding the inner surface, and blocking the open surface of the drain groove. In this manner, the open surface of the seal member is attached to the drainage groove toward the inner wall surface of the tunnel, and the drainage channel is formed by closely contacting the outer surface material of the seal member with both inner sidewalls of the drainage groove. Drainage structure of water leakage in the tunnel. 2. A drainage structure for leaking water in a tunnel, wherein a drainage channel is provided on the inner wall surface of the tunnel with a member having a U-shaped cross-section, wherein the drainage channel is formed in a U-shaped cross-section and the inner surface is formed into a smooth surface. A sealing member composed of a hard inner surface material made of plastic or the like and an outer surface material having both heat insulating property and flexibility such as sponge rubber covering the outer surface of the inner surface material excluding the inner surface, and the open surface of the sealing member The drainage channel is formed by being attached to an arbitrary position on the inner wall surface of the tunnel toward the wall surface and forming a part of the outer surface material of the sealing member.
A drainage structure for water leakage in the tunnel, which is characterized in that it is closely attached to the inner wall surface of the formed tunnel. 3. The drainage structure for leaking water in a tunnel according to claim 1, wherein the drainage channel is provided in a cracked portion formed on the inner wall of the tunnel. 4. A seal member used in the structure for draining water in a tunnel according to claim 1 or 2, which is made of a plastic material or the like having a U-shaped cross section and having a smooth inner surface through which water flows. A seal member comprising an inner surface material and an outer surface material having both heat insulating properties and flexibility such as sponge rubber covering the outer surface of the inner surface material excluding the inner surface.