JPS6012000Y2 - Tunnel antifreeze device - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a tunnel antifreeze device.

When constructing a tunnel, it is desirable that the completed tunnel not only be robust but also highly waterproof and cold resistant.

The reason for this is that if the tunnel is not waterproof, water will seep into the tunnel from the ground above it, and if it is not waterproof or cold resistant, water will seep into the tunnel in the winter, especially in cold regions. Not only does the water freeze and become icicles that hang down from the top of the tunnel, causing accidents, but the tunnel itself freezes and becomes distorted, and this distortion remains without being completely restored even after thawing. This is because there is a risk that it may become damaged over many years.

In most cases, the places where water leaks in a tunnel are cracks in the lining that have occurred for some reason after the tunnel was constructed, and joints in the lining during tunnel construction.

Conventionally, from the above point of view, it has been applied to cracks in existing tunnels or joints in the lining of newly constructed tunnels to prevent water leakage from these areas and to prevent the tunnel from freezing due to water leakage. There are two devices that can
Although three proposals have been made, there are still some points that cannot be said to be sufficient in terms of preventing water leakage.

In view of the above-mentioned drawbacks of conventional products, the present invention was developed with the purpose of providing a tunnel antifreeze device that can prevent water leakage and also prevent tunnel freezing caused by water leakage. The structure is such that a water passageway is formed on a surface facing the joint or crack in a defect that is sufficiently wider than the joint or crack formed around the joint of the tunnel lining or a crack that has occurred in the tunnel. At the same time, a water stop valve body made of a resilient hollow cylinder made of rubber or the like with a groove on the side surface is fitted, and a sealing material is press-fitted into the hollow cylindrical portion of the water stop valve body. While bringing the outer surface of the body into close contact with the wall of the defect, excluding the water passageway,
It is characterized in that the tunnel lining side of the water stop valve body is covered with a fireproof material such as an iron plate via a heat insulating layer.

Next, an embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a concrete pour joint during lining construction of tunnel t, 2 is a horizontal defect that is sufficiently wider than joint 1 and is recessed around the joint 1 of tunnel t, and 3
is a water stop valve made of a hollow cylinder made of rubber whose planar cross-sectional outline is approximately rectangular in accordance with the cross-sectional outline of the cutout 2, and three grooves 3a are formed in the outer walls of both sides, and the above-mentioned The entire surface facing the seam 1 is recessed to form a passageway 4.

Reference numeral 5 denotes a sealing material which is injected and foamed into the hollow part 3a of the plug 3 after the plug 3 is fitted into the defect 2. By filling and press-fitting the sealing material 5 into the hollow part 3a, the plug is sealed. 3 is brought into pressure contact with the defect 2 while maintaining the passageway 4.

That is, since the foaming pressure and foaming fuel of the sealing material 5 press the adhesive applied to the wall surface having the groove 3a toward the defect 2 and accelerate the drying of the adhesive, the plug body 3 It is tightly attached to both side walls of the second place.

Moreover, the concave groove 3a of the water stop valve body 3 that is in close contact with the defect 2 is
However, since a multi-stage sealing effect is exerted on the wall surface of the water stop valve body 3 divided by the groove 3a, the water leak prevention effect of the water stop valve 3 is almost perfect.

6 is a heat insulating layer which is sufficiently wider than the defect 2 and is formed on the lining by covering the water stop valve body 3, and 7 is a fireproofing layer which is covered with the heat insulating layer 6 and fixed to the tunnel t by anchor bolts B or the like. Therefore, this device provides a gap 2 that is sufficiently wider than the concrete pouring joint 1 during tunnel lining construction, and a water passageway communicating with the joint 1 in the gap 2. 4, and by foaming and filling the sealing material 5 into the hollow 3b of the stopper 3, both side walls of the stopcock 3 are brought into close contact with the inside of the defect 2. , After preventing ice from leaking out from the seam 1 when water is flowing due to the multi-stage sealing effect of the concave groove 3a of the side wall part, the cutout part 2 is opened sufficiently wide and the water stop valve body 3 is opened to the upper surface side. A heat insulating layer 6 is formed to protrude above the lining, and the heat insulating layer 6 is covered with a refractory material 7 and fixed to the tunnel t with anchor bolts B, etc., to complete the installation work.

In the embodiment shown in FIG. 2, a second cutout 21 is provided in the tunnel t that communicates with the cutout 2 and is sufficiently wider than the cutout 2, and the cutout 1 is filled with a sealing material 5. 3 is a construction example in which the second defect 21 is similarly filled with a heat insulating material 6, and a refractory material 7 is applied thereon in the same manner as in the previous example.

Therefore, the width of the heat insulating layer 6 shown in the first figure and the width of the second defect 21 in FIG.
There is a relationship between the thickness of the insulation layer 6 and the temperature at the tunnel location, but if the thickness of the insulation layer 6 having a thermal conductivity of about 0.015Kal/d-h, "C" is 35cm, In areas where the annual average temperature is 5 to 7.5 degrees Celsius, it is about 3 meters, and 7.5 meters.
In areas where the temperature is ~10.5℃, it is about 2m, and 10.5~13
In the area 'C, approximately 1rrL is required.

The tunnel t in which the device of the present invention was constructed as described above can be used even if water from the ground above flows into the joint 1.
Since the tightness between the water stop valve body 3 and the defect 2 is perfect, there is no risk that water will be discharged from the passageway 4 to the outside of the tunnel t and seep into the tunnel, and when water flows, the tunnel t will be Even when cooled by wind, the cold air is blocked by the insulation layer 6, which is formed sufficiently wider than the sealing material layer.
Since water is not transmitted to the seam 1 and its surroundings, the water does not freeze, and there is almost no possibility that the tunnel t will freeze.

In the above embodiment, an example was described in which the device of the present invention is applied to the concrete pouring joint 1 of the tunnel t, but it goes without saying that the device of the present invention can be applied to cracks that occur in the tunnel t. When the device of the present invention is employed for tunnel construction, the construction of the device of the present invention is extremely simple if the concrete pouring joint is stepped when constructing the lining.

Since the present invention is as described above, it is suitable as an antifreeze device for tunnels, and can be constructed relatively easily and inexpensively.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view of the main part of a tunnel in which an example of the device of the present invention is installed, and FIG. 2 is a separate plan sectional view. 1... Seam, 2... Defect, 21...
...Second missing part, 3...Stop valve body, 3a...
...Concave groove, 3b...Hollow part, 4...
・Water passage, 6...insulation material, 7...fireproof material.

Claims (1)

[Scope of utility model registration request] A water passageway is formed on the surface facing the joint or crack in a defect that is sufficiently wider than the joint or crack formed around the joint of the tunnel lining or a crack that has occurred in the tunnel, and the side surface At the same time, a sealing material is press-fitted into the hollow cylindrical part of the water stop valve body, and a sealing material is press-fitted into the hollow cylindrical part of the water stop valve body. A tunnel characterized in that the outer surface is brought into close contact with the wall surface of the defect except for the water passageway, and the tunnel lining surface side of the water stop valve body is covered with a fireproof material such as a steel plate through a heat insulating layer. antifreeze equipment.