JP6901879B2 - Tunnel water stop structure, tunnel water stop method and tunnel water stop sealing member - Google Patents

Description

The present invention is a tunnel water stop structure, a tunnel stop in which water is stopped between segments so that groundwater or the like does not flow into a tunnel structure constructed by connecting a plurality of segments formed in advance into a predetermined shape. Regarding water method and tunnel water blocking sealing member.

Conventionally, a shield method and an open shield method are known as techniques for constructing a tunnel structure by connecting a plurality of segments.
For example, when constructing a tunnel structure by connecting box culverts having a tubular cross section, an annular backup material is installed between the box culverts, and a box in which the backup material is sandwiched from the inside of the box culverts. A technique is known in which water is stopped between box culverts by filling a space between culverts with a caulvert (adhesive) to form a joint (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-130050

However, in the case of the technique of Patent Document 1, the work of filling the space between the box culverts with the caulvert material must be performed by the operator using an instrument such as a caulvert gun over the entire circumference of the joint of the box culverts. Since it is complicated and takes time, its simplification has been desired.

An object of the present invention is to provide a tunnel water blocking structure, a tunnel water stopping method, and a tunnel water stopping sealing member capable of more easily stopping water.

In order to achieve the above object, one invention according to the present application is
It is a waterproof structure of a tunnel structure constructed by connecting multiple segments.
Grooves along the seams of the plurality of segments provided inside the tunnel structure,
A first sealing material that is arranged in the groove and is in close contact with the segments on both sides to form a water-conducting space on the inner side of the groove.
A second sealing material that straddles the groove and is in close contact with the segments on both sides and closes the opening of the groove.
A joining material formed by pouring a solidifying material between the first sealing material and the second sealing material so as to fill the gap between the segments.
Equipped with a,
The first sealing material and the second sealing material are integrally formed via a connecting portion .

In the tunnel water blocking structure having such a configuration, a solidifying material is poured between the first sealing material and the second sealing material attached to the grooves provided along the seams of the segments, and the first sealing material and the second sealing material are poured. It can be made by spreading a solidifying material between the two to fill the gaps between the segments and forming a bonding material in which the solidifying material is solidified.
In other words, this tunnel water stoppage is simpler than the conventional method in which the operator fills the solidifying material with an instrument such as a caulking gun over the entire area of the groove along the joint of multiple segments. You can build a structure.
In this way, it is possible to obtain a tunnel water blocking structure in which water is stopped by a simpler operation, and it is possible to prevent the inflow of groundwater or the like into the inside of the tunnel structure.

Further, the said first sealant second sealing material that has been so formed integrally via the connecting portion, the number of parts can be reduced. Then, as compared with the case where the first sealing material and the second sealing material are individually configured and installed, the first sealing material and the second sealing material can be installed at predetermined positions in the groove in a smaller number of steps.
Further, if the first sealing material and the second sealing material are integrally formed via the connecting portion, the arrangement of the first sealing material and the second sealing material can be kept constant, so that the first sealing material can be used. It is possible to prevent the first sealing material from entering the water conveyance space more than necessary and coming off.

Also, preferably
The first sealing material is provided with a positioning portion that abuts on the wall surface at the back of the groove.
By doing so, the first sealing material can be prevented from being pushed too far into the groove, and the first sealing material can be easily arranged at a predetermined installation location.

In addition, other inventions according to this application
It is a method of stopping water in a tunnel structure constructed by connecting multiple segments.
A step of providing a groove along the seam of the plurality of segments inside the tunnel structure by connecting a plurality of segments previously formed into a predetermined shape.
A step of installing a first sealing material that is brought into close contact with the segments on both sides in the groove and forms a water-conducting space on the inner side of the groove.
A step of straddling the groove and bringing it into close contact with the segments on both sides, and installing a second sealing material that closes the opening of the groove.
A step of pouring a solidifying material having fluidity between the first sealing material and the second sealing material to fill the gaps between the segments and forming a solidified bonding material.
And have a,
The first sealing material and the second sealing material are members integrally formed via a connecting portion, and while installing the first sealing material in the groove, a second sealing material that closes the groove is installed. I tried to do it.

In the tunnel water blocking method having such a configuration, the first sealing material and the second sealing material are attached to the grooves provided along the joints of the segments inside the tunnel structure constructed by connecting a plurality of segments. After that, a solidifying material is poured between the first sealing material and the second sealing material, and the solidifying material is spread between the first sealing material and the second sealing material to fill the gaps between the segments and solidify the solidifying material. By forming the joint material, a tunnel water blocking structure that can prevent the inflow of groundwater and the like into the inside of the tunnel structure can be obtained.
In other words, according to this tunnel water stop method, compared to the conventional method in which an operator fills a solidifying material with an instrument such as a caulking gun over the entire area of the groove along the seams of a plurality of segments. It is possible to obtain a tunnel water stop structure that stops water with a simpler operation.

Further , the first sealing material and the second sealing material are members integrally formed via a connecting portion, and the second sealing material that closes the groove while installing the first sealing material in the groove. by to install the installation and the first sealant and second sealant respectively compared with a method of installing configured separately, the first sealing member and a second sealing member in a predetermined position of the groove in fewer steps can do.

Also, preferably
The second sealing material is formed with at least one inlet and at least one outlet.
The solidifying material was filled between the first sealing material and the second sealing material until the solidifying material poured from the injection port leaked from the outlet.
By doing so, the solidifying material can be more reliably filled between the first sealing material and the second sealing material, and a bonding material that satisfactorily fills the gaps between the segments can be formed.

In addition, the invention according to this application is
A tunnel water-stopping sealing member provided inside a tunnel structure constructed by connecting a plurality of segments and arranged in a groove along a joint of the plurality of segments.
A first sealing material that is arranged in the groove and is in close contact with the segments on both sides to form a water-conducting space on the inner side of the groove.
A second sealing material that straddles the groove and is in close contact with the segments on both sides and closes the opening of the groove.
A connecting material connecting the first sealing material and the second sealing material,
With
The ends on both sides of the first sealing material are made of a material that is softer than the other parts of the first sealing material.
The joint portion of the connecting material with the second sealing material is made of a material softer than the other parts of the connecting material.

A tunnel water-stopping sealing member having such a configuration is suitable because the portion formed of the soft material is elastically deformed so that the first sealing material and the second sealing material are easily brought into close contact with the segments on both sides. It is possible to stop the water.
That is, a good tunnel water blocking structure can be constructed by using this tunnel water blocking sealing member.

According to the present invention, a tunnel water blocking structure capable of more easily stopping water can be obtained.

It is a schematic view (a) which shows the tunnel structure constructed by connecting a plurality of segments, and is the explanatory view (b) of the joint of the segment which showed the part B of FIG. 1A enlarged. It is sectional drawing which shows the tunnel water stop structure of this embodiment. It is a perspective view which shows the sealing member used for the tunnel water stop structure. It is explanatory drawing about the tunnel water stop method of this embodiment. It is explanatory drawing about the filling of the solidifying material in the tunnel water stop method of this embodiment. It is sectional drawing (a) (b) (c) which shows the modification of the tunnel water stop structure. It is sectional drawing which shows the modification of the tunnel water stop structure. It is sectional drawing which shows the other embodiment of the sealing member used for the tunnel water stop structure. It is explanatory drawing (a) which shows the state which attached the sealing member of another embodiment to a groove, and is the cross-sectional view (b) which shows the tunnel water stop structure using the sealing member of another embodiment. It is sectional drawing (a) (b) which shows the modification of the tunnel water stop structure.

Hereinafter, embodiments of a tunnel water blocking structure, a tunnel water stopping method, and a tunnel water stopping sealing member according to the present invention will be described in detail with reference to the drawings. However, although the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.

(Embodiment 1)
FIG. 1A is a schematic view showing a shield tunnel T having a multicircular cross section which is a tunnel structure, and FIG. 1B is an explanatory view showing an enlarged seam of a segment of the tunnel.
FIG. 2 is a cross-sectional view showing a tunnel water blocking structure of the present embodiment provided at a seam of segments.

As shown in FIGS. 1A and 1B, the seams of the segments S are inside the tunnel T so that groundwater and the like do not flow into the inside of the tunnel T for railways constructed by connecting a plurality of segments S. A tunnel water stop structure 100 is provided along the above. Further, a sealing material C made of, for example, water-expandable rubber is interposed on the joint surface of the segment S.

As shown in FIGS. 1B and 2B, the tunnel water blocking structure 100 includes a groove 1 along the seam of the segment S provided inside the tunnel T and segments on both sides arranged in the groove 1. A first sealing material 11 that is in close contact with S and forms a water guiding space R on the inner side of the groove 1, and a second sealing material 12 that is in close contact with the segments S on both sides across the groove 1 and closes the opening of the groove 1. And a joining material 20 formed by pouring a solidifying material between the first sealing material 11 and the second sealing material 12 so as to fill the gap of the segment S.

As shown in FIG. 3, the first sealing material 11 is a strip-shaped member having a substantially W-shaped cross section.
As shown in FIG. 3, the second sealing material 12 is a flat band-shaped member.
The first sealing material 11 and the second sealing material 12 are integrally formed via a connecting portion 13, and the first sealing material 11, the second sealing material 12, and the connecting portion 13 serve as a tunnel water blocking sealing member. The sealing member 10 is configured.
The sealing member 10 is, for example, a long member made of resin (for example, made of polyvinyl chloride) manufactured by injection molding or extrusion molding, and is appropriately cut and used according to the length of the groove 1. ing.
The sealing member 10 has flexibility and is elastically deformed when the first sealing member 11 is inserted into the groove 1.

When the second sealing material 12 is in close contact with the segments S on both sides while straddling the groove 1, the first sealing material 11 is arranged at a predetermined installation location in the groove 1, and the first sealing material 11 is arranged. Both ends are in close contact with the segments S on both sides of the groove 1. That is, the second sealing material 12 has a function of positioning the first sealing material 11 at a predetermined installation location in the groove 1. Specifically, the second sealing material 12 has a size capable of staying in the opening of the groove 1 so that the first sealing material 11 does not enter the groove 1 any more.
Further, in the second sealing material 12, at least one inlet 12a and at least one outlet 12b are formed in order to pour the solidifying material between the first sealing material 11 and the second sealing material 12 (FIG. 6). 4).

As shown in FIG. 3, the connecting portion 13 is provided intermittently in the longitudinal direction of the sealing member 10. In this way, the connecting portion 13 may be discontinuous so that the solidifying material poured between the first sealing material 11 and the second sealing material 12 is evenly distributed on both sides of the connecting portion 13.
After forming the connecting portion 13 continuous in the longitudinal direction of the sealing member 10, a plurality of through holes may be formed in the connecting portion 13.

The joining material 20 is formed by pouring a solidifying material having fluidity between the first sealing material 11 and the second sealing material 12 to fill the gaps in the segments S, and then solidifying the solidifying material.
Since the bonding material 20 is arranged between the first sealing material 11 and the second sealing material 12 to fill the gap of the segment S, groundwater or the like that has flowed in between the joint surfaces of the segment S from the outside of the tunnel T or the like. Even if it exceeds the sealing material C, it does not flow into the tunnel T.
Then, the groundwater that has flowed in from the outside of the tunnel T over the sealing material C flows toward a predetermined drainage channel through the headrace space R formed on the inner side of the groove 1.

Examples of the solidifying material that can be used for the bonding material 20 include a two-component adhesive made by mixing an epoxy resin and a silicone resin, and an epoxy resin-based one-component adhesive.
The viscosity of the solidifying material (adhesive) is arbitrary, and solidification with an appropriate viscosity according to the size (outer diameter size) of the tunnel T (segment S), the width of the groove 1, and the temperature change depending on the season. A material (adhesive) may be used.

Next, the procedure for constructing the tunnel water blocking structure 100, which is the tunnel water stopping method of the present embodiment, will be described.

First, the segments S previously formed into a predetermined shape are joined and assembled to the wall surface of the excavation hole excavated by the shield machine.
A recess serving as a groove 1 is formed in advance on the edge of the segment S, and when a plurality of segments S are connected, the groove 1 along the seam of the segment S is provided inside the tunnel T. ing.

Next, the sealing member 10 is attached to the groove 1 along the seam of the segment S.
Specifically, the sealing member 10 is attached so that the first sealing member 11 of the sealing member 10 is inserted into the groove 1 and the groove 1 is closed by the second sealing member 12 of the sealing member 10.
More specifically, the first is such that both ends of the first sealing material 11 are brought into close contact with the segments S on both sides in the groove 1 and a water guiding space R is formed in the groove 1 deeper than the first sealing material 11. The sealing material 11 is installed, and both ends of the second sealing material 12 arranged so as to straddle the groove 1 are brought into close contact with the segments S on both sides of the groove 1, and the second sealing material is closed so as to close the opening of the groove 1. 12 is installed.
Since the sealing member 10 is an elastically deformable member, the first sealing member 11 deformed when it is inserted into the groove 1 is restored in the groove 1 so as to be in close contact with the segment S.

Next, after installing the second sealing material 12 so that there is no gap between the second sealing material 12 and the segment S, a solidifying material having fluidity is placed between the first sealing material 11 and the second sealing material 12. Pour in.
Specifically, as shown in FIG. 4, the solidifying material is referred to as the first sealing material 11 until the solidifying material poured from the injection port 12a of the second sealing material 12 leaks from the outlet 12b of the second sealing material 12. Fill between the second sealing materials 12 to fill the gaps in the segments S.
The second sealing material 12 may be temporarily fastened to the inner surface of the tunnel T with tape or the like so that there is no gap between the second sealing material 12 and the segment S.
In this way, after filling the solidifying material between the first sealing material 11 and the second sealing material 12, the solidifying material is cured for a predetermined time to solidify the solidifying material, thereby forming the bonding material 20 for joining the adjacent segments S to each other.

In the case of the sealing member 10 installed in the groove 1 along the inner peripheral direction of the tunnel T, for example, as shown in FIGS. 4 and 5A, from the upper injection port 12a in the second sealing material 12 The solidifying material may be filled between the first sealing material 11 and the second sealing material 12 so that the solidifying material is poured and the solidifying material leaks from the lower outlet 12b.

Further, in the case of the sealing member 10 installed in the groove 1 along the extending direction of the tunnel T, for example, as shown in FIG. 5A, the solidifying material is solidified from the injection port 12a on one end side of the second sealing material 12. The solidifying material may be filled between the first sealing material 11 and the second sealing material 12 so that the solidifying material leaks from the outlet 12b on the other end side.

Further, as shown in FIG. 5B, the solidifying material poured from the upper injection port 12a of the second sealing material 12 of the sealing member 10 installed in the groove 1 along the inner peripheral direction of the tunnel T is poured into the tunnel T. A solidifying material is filled between the first sealing material 11 and the second sealing material 12 so as to leak from the outlet 12b of the second sealing material 12 of the sealing member 10 installed in the groove 1 along the extending direction. It may be.

Then, a solidifying material is filled between the first sealing material 11 and the second sealing material 12 to form a joining material 20, and the joining material 20 joins the adjacent segments S to each other so that the tunnel water blocking structure 100 is formed. Is obtained.

As described above, in the tunnel water blocking structure 100 of the present embodiment, the sealing member 10 is formed in the groove 1 provided along the joint of the segments S inside the tunnel T constructed by connecting the plurality of segments S. Between the first sealing material 11 and the second sealing material 12 until the solidifying material poured from the injection port 12a formed in the second sealing material 12 of the sealing member 10 leaks from the outlet 12b. It can be made by filling the solidifying material to form the bonding material 20.
That is, as compared with the conventional method in which the operator fills the solidifying material with an instrument such as a caulking gun over the entire area of the groove 1 along the seam of the segment S, the tunnel water stopping method of the present embodiment is used. According to this, the tunnel water blocking structure 100 can be constructed with a simpler operation.

Further, in the tunnel water blocking structure 100 of the present embodiment, in addition to blocking the inflow of groundwater into the tunnel T by the sealing member 10 and the joining material 20, the inflow from the outside of the tunnel T between the joining surfaces of the segments S. Since the drainage treatment is possible so that the groundwater is drained toward a predetermined drainage channel through the headrace space R formed on the inner side of the groove 1, more suitable water stoppage can be obtained.

The present invention is not limited to the above embodiment.
The first sealing material 11 is not limited to the one having a substantially W-shaped cross section, and the shape thereof is arbitrary. For example, as shown in FIG. 6A, the first sealing material 11 exhibits a substantially U-shaped cross section. Even in the tunnel water blocking structure 100 using the sealing member 10 having the material 11, as shown in FIG. 6B, the tunnel using the sealing member 10 having the first sealing material 11 having an arcuate cross section. The waterproof structure 100 may be used.

Further, as shown in FIG. 6C, the tunnel water blocking structure 100 may be a tunnel water blocking structure 100 using a sealing member 10 in which positioning portions 11a are provided at both ends of the first sealing member 11.
The positioning portion 11a has a shape in which the tip of the positioning portion 11a abuts against the wall surface at the back of the groove 1, and the installation location of the first sealing material 11 is prevented so that the first sealing material 11 does not enter the back of the groove 1 any more. Is provided for positioning. If the sealing member 10 is provided with the positioning portion 11a, it is not necessary to position the first sealing material 11 at a predetermined installation location in the groove 1 by the second sealing material 12, so that the second sealing material 12 is provided. Is a size that closes the opening of the groove 1, and the width of the second sealing material 12 can be reduced.

Further, as shown in FIG. 7, the first sealing material 11 and the second sealing material 12 may be separate members. In that case, it is preferable that the first sealing material 11 is provided with the positioning portion 11a. By doing so, the first sealing material 11 is pushed into the depth of the groove 1 by the pressure when the solidifying material is injected between the first sealing material 11 and the second sealing material 12, and is displaced from the predetermined installation location. It is possible to prevent it from being stored.
Further, when the first sealing material 11 and the second sealing material 12 are separate members, it is preferable that the second sealing material 12 is provided with a guide portion 12c arranged along the edge of the groove 1. .. By doing so, the opening of the groove 1 can be suitably closed by the second sealing material 12.
Further, when the first sealing material 11 and the second sealing material 12 are used as separate members, it is preferable that the second sealing material 12 is provided with a protrusion 12d protruding toward the first sealing material 11. .. By doing so, the protrusion 12d becomes like an anchor embedded in the joining member 20, and the second sealing member 12 is less likely to fall off from the inner wall of the tunnel T. The protrusion 12d may have a length that abuts on the first sealing material 11.

(Embodiment 2)
Next, the second embodiment of the tunnel water blocking structure, the tunnel water stopping method, and the tunnel water stopping sealing member according to the present invention will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and only different parts will be described.

As shown in FIG. 8, the sealing member 10 which is a tunnel water blocking sealing member is arranged in the groove 1 and is in close contact with the segments S on both sides, and the first sealing member which forms the water guiding space R on the back side of the groove 1. The material 11 and the second sealing material 12 that straddles the groove 1 and is in close contact with the segments S on both sides and closes the opening of the groove 1, and the connecting material 13 that connects the first sealing material 11 and the second sealing material 12. And have.
The sealing member 10 of the second embodiment is manufactured by an integral molding method (for example, injection molding or extrusion molding) using two kinds of resin materials, and is arranged in a groove 1 along a seam of a plurality of segments S. It is a member.

The end portions on both sides of the first sealing material 11 are formed of a material softer than the other parts of the first sealing material 11, and flexible sealing portions 11b are provided on both sides of the first sealing material 11. .. The first sealing material 11 of the second embodiment has a substantially M-shaped cross section.
Further, the joint portion of the connecting material 13 with the second sealing material 12 is formed of a material softer than the other parts of the connecting material 13, and a flexible connecting portion 13b is provided at the base of the connecting material 13. There is.
Specifically, in the sealing member 10, the joint portions (flexible connecting portion 13b) between the end portions (flexible sealing portion 11b) on both sides of the first sealing material 11 and the second sealing material 12 of the connecting member 13 are soft. It is made of polyvinyl chloride, and the other parts are made of hard vinyl chloride.
Further, both end portions (flexible sealing portion 11b) of the first sealing material 11 are formed of soft polyvinyl chloride, and the joint portion (flexible connecting portion 13b) of the connecting material 13 with the second sealing material 12 is made of semi-rigid poly. It may be made of vinyl chloride and the other parts may be made of hard vinyl chloride.

Then, as shown in FIGS. 9A and 9B, when the sealing member 10 is attached to the groove 1 and installed, the flexible sealing portion 11b bends and adheres along the inner wall surface of the groove 1, so that the sealing member 10 is sealed. The member 10 can suitably stop water, and a good tunnel water stop structure 100 can be constructed.

Further, as shown in FIGS. 10 (a) and 10 (b), even when the seam of the segment S is misaligned and a step is generated, the flexible connecting portion 13b of the connecting member 13 is bent to obtain a second. Since the sealing material 12 is in close contact with the segment S, the solidifying material can be suitably poured between the first sealing material 11 and the second sealing material 12 to form the bonding material 20.

As described above, even in the tunnel water stop structure 100 using the sealing member 10 of the second embodiment, water can be stopped suitably, and a good tunnel water stop structure 100 can be manufactured.

In the above embodiment, a shield tunnel having a multi-circular cross section has been described as an example, but the present invention is not limited to this, and the cross-sectional shape of the tunnel is arbitrary, for example, a plurality of segments can be used. Even in the case of a shield tunnel having a circular cross section constructed by connecting them, the tunnel water blocking structure of the present embodiment can be applied to the joint of the segment.

Further, the segment for the tunnel may be a box culvert, and the tunnel water blocking structure of the present embodiment can be applied to a tunnel constructed by connecting box culverts by an open shield method.

Further, in the above embodiment, the connecting portion 13 of the sealing member 10 is provided intermittently in the longitudinal direction of the sealing member 10, but the present invention is not limited to this, and the connecting portion is not limited to this. 13 may be continuous in the longitudinal direction of the sealing member 10. In that case, the injection port 12a and the outflow port 12b may be formed on both sides of the second sealing material 12 of the sealing member 10 with the connecting portion 13 sandwiched so as to fill the solidifying material.

Further, in the above embodiment, the first sealing material 11 and the second sealing material 11 and the second sealing material 11 so as to pour the solidifying material from the upper injection port 12a of the second sealing material 12 and leak the solidifying material from the lower outlet 12b. Although it is assumed that the solidifying material is filled between the sealing materials 12, the present invention is not limited to this. For example, the solidifying material is poured from the opening using the lower outlet 12b as an injection port, and the solidifying material is poured from the upper side. The solidifying material may be filled between the first sealing material 11 and the second sealing material 12 so that the solidifying material leaks from the opening of the injection port 12a. In this case, air bubbles can easily escape from between the first sealing material 11 and the second sealing material 12, and the solidifying material can be suitably filled.

Further, in the above embodiment, a recess to be a groove 1 is formed in advance on the edge of the segment S, and when a plurality of segments S are connected, the groove 1 along the seam of the segment S is inside the tunnel T. However, the present invention is not limited to this, and for example, it is formed by connecting a plurality of segments S and then cutting a groove 1 along the seam of the segments S. It may be.

In addition, it goes without saying that the specific detailed structure and the like can be changed as appropriate.

1 Groove 10 Sealing member (Tunnel water blocking sealing member)
11 1st sealing material 11a Positioning part 11b Flexible sealing part 12 2nd sealing material 12a Injection port 12b Outlet 12c Guide part 12d Protrusion part 13 Connecting part (connecting material)
13b Flexible connection part 20 Joining material 100 Tunnel water blocking structure R Water conducting space S segment T Tunnel

Claims (5)

It is a waterproof structure of a tunnel structure constructed by connecting multiple segments.
Grooves along the seams of the plurality of segments provided inside the tunnel structure,
A first sealing material that is arranged in the groove and is in close contact with the segments on both sides to form a water guiding space on the inner side of the groove.
A second sealing material that straddles the groove and is in close contact with the segments on both sides and closes the opening of the groove.
A joining material formed by pouring a solidifying material between the first sealing material and the second sealing material so as to fill the gap between the segments.
Equipped with a,
A tunnel water blocking structure characterized in that the first sealing material and the second sealing material are integrally formed via a connecting portion. Tunnel waterproofing structure according to claim 1 wherein the first sealing member, wherein a positioning portion abutting against the back wall of the groove. It is a method of stopping water in a tunnel structure constructed by connecting multiple segments.
A step of providing a groove along the seam of the plurality of segments inside the tunnel structure by connecting a plurality of segments previously formed into a predetermined shape.
A step of installing a first sealing material that is brought into close contact with the segments on both sides in the groove and forms a water-conducting space on the inner side of the groove.
A step of straddling the groove and bringing it into close contact with the segments on both sides, and installing a second sealing material that closes the opening of the groove.
A step of pouring a solidifying material having fluidity between the first sealing material and the second sealing material to fill the gaps between the segments and forming a solidified bonding material.
And have a,
The first sealing material and the second sealing material are members integrally formed via a connecting portion, and while installing the first sealing material in the groove, a second sealing material that closes the groove is installed. A method of stopping water in a tunnel, which is characterized by doing so. The second sealing material is formed with at least one inlet and at least one outlet.
The tunnel according to claim 3 , wherein the solidifying material is filled between the first sealing material and the second sealing material until the solidifying material poured from the injection port leaks from the outlet. How to stop water. A tunnel water-stopping sealing member provided inside a tunnel structure constructed by connecting a plurality of segments and arranged in a groove along a joint of the plurality of segments.
A first sealing material that is arranged in the groove and is in close contact with the segments on both sides to form a water-conducting space on the inner side of the groove.
A second sealing material that straddles the groove and is in close contact with the segments on both sides and closes the opening of the groove.
A connecting material connecting the first sealing material and the second sealing material,
With
The ends on both sides of the first sealing material are made of a material that is softer than the other parts of the first sealing material.
A tunnel water-stopping sealing member, wherein a joint portion of the connecting material with the second sealing material is made of a material softer than other parts of the connecting material.

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