KR100561690B1 - The manhole for oil-fire prevention in the tunnel - Google Patents

Abstract

The present invention relates to an oil fire diffusion prevention manhole inside a tunnel, and solves a problem in which a fire spreads rapidly through a manhole due to oil floating in water when a fire occurs along with oil in an accident such as a vehicle overturning. It was developed to improve the diffusion prevention structure and to supply the required quantity of water smoothly and to be easy to install. It has a rectangular parallelepiped body, and the main drainage channel and the fire diffusion prevention channel in the longitudinal direction have parallel walls with a certain height. A lower surface of the main drainage channel than the fire diffusion prevention channel and a larger cross sectional area, and both end portions of the main drainage channel are provided with mounting holes for mounting the drainage pipes; The main drainage passage extends from the upper side to the lower side of the body and extends in the same cross section, and the fire diffusion prevention water passage forms a fire diffusion prevention partition wall extending to a lower position than the partition wall and is discharged from the inlet portion of the water inflow portion. Divided into outlets; The inlet portion forms a blocking wall to block the upper portion of the main drainage channel to block the fire diffusion prevention channel, but the upper surface of the blocking wall forms an inclined surface inclined in the direction of the fire diffusion prevention channel, and prevents the fire diffusion of the discharge portion. A groundwater inflow hole is formed through which groundwater flows into one side of the channel; Inside the inlet and outlet part is made of a structure that is opened and closed by a cover, the outlet is closed inside the cover by the cover and the cover of the upper inlet portion is made of a grate so that surface water can be introduced into the tunnel Oil fire diffusion prevention manhole.

Fire manhole

Description

The manhole for oil-fire prevention in the tunnel}

1 is a perspective view according to an embodiment of the present invention

2 is a conceptual diagram showing the flow of water according to the present invention

3A to 3C are cross-sectional views according to an embodiment of the present invention.

Figure 4 is an exploded perspective view according to an embodiment of the present invention

5 is a conceptual diagram illustrating a tunnel in which a manhole is installed according to the present invention;

6 is a conceptual diagram showing a conventional series diffusion prevention channel.

7 is a conceptual diagram showing a conventional road surface water inflow diffusion prevention channel

<Explanation of symbols for main parts of the drawings>

1: body

11: bulkhead 12: cover

13: grate 14: lower body

15: upper body 16: cover

17: insertion groove 18: insertion protrusion

19: cover mounting hole 2: the main drain

21: mounting hole 3: fire diffusion prevention channel

4: drainage pipe 5: fire diffusion barrier

6 inlet 61: blocking wall

62: inclined surface 7: discharge portion

71: groundwater inflow hole 80: water

81: Oil 82: Flame

83: bulkhead 84: main drain

85: siphon tube

The present invention relates to an oil fire diffusion manhole inside a tunnel, and to prevent oil from spreading rapidly through a channel inside a tunnel when an oil leak occurs due to vehicle overturning or other causes. It's about the manhole.

Since rainwater or various groundwater flows into the tunnel, drainage channels are formed to effectively drain it.

At this time, if a fire occurs due to the leakage of oil from a vehicle accident inside the tunnel, the oil has a lower specific gravity than water, so it floats on the water and rapidly spreads through the manhole, affecting evacuation personnel or nearby vehicles avoiding flames and smoke. There is a possibility of going mad and developing into a large chain of accidents.

In particular, when an oil fire occurs in an uphill tunnel, the smoke proceeds upward, but the oil flows down to the lower level, so the spreading direction of the flame proceeds rapidly downward. Therefore, the risk is very high compared to the general road.

In order to improve safety for evacuation of people in such limited spaces, a form of installing a siphon-type manhole (or catchment well) on a drainage path has been considered.

Siphon phenomena generally refer to the flow of water from a high level to a low level, but due to the difference in pressure in addition to the global gravity.

Using this method, after installing the bottom of the bulkhead in the drainage path, the oil flowing by using the specific gravity difference between water and oil is allowed to pass, and the flame moving along with the oil is blocked by the bulkhead. A level above a certain height must be maintained at all times in the phase drainage path.

There are two types of conventional drainage types using this siphon method. First, the method of arranging them in series in the main drainage path and second, installing them on the road water inlet and connecting them to the main drainage path. have.

FIG. 6 is a conceptual view illustrating a conventional series diffusion preventing water channel, in which an oil 81 floating on an upper layer of the water 80 and a flame 82 generated from the oil 81 are provided with a partition 83 having a predetermined length. When water pressure is generated by the water 80 introduced from one side, the water 80 in the lower portion flows down between the partitions 83, but has a structure to prevent the flow of the oil 81 and the flame 82. .

This method, which is arranged in series with the drainage path, is excellent in suppressing fire spreading effect but lowering the flow rate, and consequently, the diameter of the drainage pipe must be increased.

7 is a conceptual view illustrating a conventional road water inflow diffusion prevention channel, before the flame 82 including water 80 or oil 81 flowing from the road water inflow portion enters the main drain 84; U'-shaped siphon pipe (85) to pass through to prevent the spread of flame.

This technique does not affect the flow rate of the drainage channel, but in tunnels where there is almost no road inflow, it is necessary to plan to artificially supply water to this part regularly, and it may not function properly due to depletion of water when left for a long time. Or provide a habitat for pests such as mosquito larvae.

In addition, this method has a manufacturing difficulty in manufacturing the formwork in the existing tunnel construction.

The present invention was developed to solve the above problems, and an object thereof is to provide an oil fire diffusion prevention manhole that prevents fire spreading due to an oil fire inside a tunnel.

In addition, to provide an oil fire diffusion manhole that can easily secure the amount of water required to apply the siphon method.

In addition, it provides an oil fire diffusion prevention manhole that can be manufactured and installed outside from the installation process.

In order to achieve the above object, the present invention has a rectangular parallelepiped body and the main drainage path and the fire diffusion prevention channel in the longitudinal direction are connected in parallel with a certain height of the bulkhead, but the bottom of the main drainage channel is larger than the fire diffusion prevention channel. Low and large cross sectional area, and both ends of the main drainage channel are provided with mounting holes for mounting the drainage pipe;

The main drainage passage extends from the upper side to the lower side of the body and extends in the same cross section, and the fire diffusion prevention water passage forms a fire diffusion prevention partition wall extending to a lower position than the partition wall and is discharged from the inlet portion of the water inflow portion. Divided into outlets;

The inlet portion forms a blocking wall to block the upper portion of the main drainage channel to block the fire diffusion prevention channel, but the upper surface of the blocking wall forms an inclined surface inclined in the direction of the fire diffusion prevention channel, and prevents the fire diffusion of the discharge portion. A groundwater inflow hole is formed through which groundwater flows into one side of the channel;

Inside the inlet and outlet part is made of a structure that is opened and closed by a cover, the outlet is closed inside the cover by the cover and the cover of the upper inlet portion is made of a grate so that surface water can be introduced into the tunnel Oil fire diffusion prevention manhole.

Accordingly, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a perspective view according to an embodiment of the present invention, Figure 2 is a conceptual diagram showing the flow of water according to an embodiment of the present invention, Figure 3a to 3c is a cross-sectional view according to an embodiment of the present invention, a rectangular parallelepiped The main drainage channel 2 and the fire diffusion prevention channel 3 in the longitudinal direction, respectively, are connected in parallel with the partition wall 11 having a predetermined height, and the bottom surface of the main drainage channel 2 is It is lower than the diffusion prevention channel (3) and its cross-sectional area is formed large, and both ends of the main drainage channel (2) is formed with a mounting hole (21) for mounting the drain pipe (4);

The main diffusion passage 2 extends from the upper portion to the lower portion in the body 1 and the main drainage passage 2 extends in the same section, and the fire diffusion prevention passage 3 extends to a position lower than the partition wall 11. 5) to form an inlet portion 6 and a discharge portion 7 discharged portion of the water is introduced;

The inlet 6 forms a blocking wall 61 in which an upper portion of the main drainage passage 2 is blocked to block the fire diffusion prevention channel 3, but the upper surface of the blocking wall 61 prevents the fire diffusion. An inclined surface 62 inclined in the direction of the water channel 3, and an underground water inflow hole 71 into which ground water flows into one side of the fire diffusion prevention channel 3 of the discharge portion 7;

The inlet part 6 and the upper part of the discharge part 7 is made of a structure that is opened and closed by a cover 12, the outlet part 7 is closed by the cover 12 inside the inlet part 6 The upper cover 12 is shown to be composed of a grate 13 so that the surface water can be introduced.

In this configuration, when road surface water flows through the grate 13, the road surface water flows into the fire diffusion prevention channel 3 along the inclined surface 62. When the surface of the fire diffusion prevention channel 3 is not supplied because the water supply is lower than the fire diffusion prevention partition 5, the groundwater inflow hole 71 is formed.

This is generally used in the tunnel because there is a lot of effluent or groundwater inflow from the bedrock to use it effectively, and when a large amount of water accumulates in the fire diffusion prevention channel 3, the partition of the discharge portion 7 The water flows into the main drainage channel 2 beyond (11).

In this case, the flow of the main drain 2 is made independently so that the flow of water does not interfere.

In addition, the cover 12 is to check the state with the naked eye in order to check the state of the main drain (2) and the fire diffusion prevention channel (3) therein and to perform a simple operation.

Figure 4 is an exploded perspective view according to an embodiment of the present invention, the body (1) is the main drainage channel 2, the fire diffusion prevention channel 3 and the partition wall 11, the mounting hole 21 and the fire diffusion A lower body 14 including two or more insertion grooves 17 extending in a longitudinal direction on an upper surface thereof including a part of the barrier rib 5;

The bottom surface is formed with an insertion protrusion 18 coupled to correspond to the insertion groove 17 of the lower body 14, the upper surface is formed with two or more insertion grooves 17 extending in the longitudinal direction, the groundwater inflow hole An upper body 15 including an upper portion of the 71 and the blocking wall 61 and the fire diffusion preventing partition 5;

A cover portion 16 formed at an bottom thereof with an insertion protrusion 18 coupled to the insertion groove 17 of the upper body 14 and having two cover mounting holes 19 formed on an upper surface thereof;

It is shown that the cover 12 is mounted to the cover portion 16.

This configuration is to fabricate each part to assemble and use it to overcome the disadvantage that the production is impossible by a single formwork by the internal configuration.

At this time, each connection part should be waterproofed by water leakage paint or other various methods to prevent water leakage.

This configuration solves the problem of installing the formwork inside the complex tunnel to install the fire diffusion prevention pipeline in the tunnel construction, assembled and manufactured outside the gang, and transported to the inside of the tunnel to connect the adjacent manhole to the drain pipe (4). It has the advantage of being a simple task.

5 is a conceptual view showing a tunnel in which a manhole is installed in accordance with the present invention. Manhole is installed, and it is desirable to plan the pitch on the side wall so that the oil flowing out in the event of an accident can flow smoothly into the manhole.

As described above, the present invention has an effect of minimizing damage by preventing the spread of fire when a fire occurs along with leakage of oil inside the tunnel.

In addition, by using groundwater along with water flowing from the ground, it is possible to obtain a fire spread prevention effect at all times without a separate water supply and does not disturb the flow to the main drainage.

In addition, it is possible to reduce the installation cost and time by making it easy to install externally during the installation process.

Claims (2)

The main drainage channel 2 and the fire spreading prevention channel 3 in the longitudinal direction, respectively, having a body 1 of a rectangular parallelepiped are connected in parallel with a partition wall 11 having a predetermined height, and the bottom surface of the main drainage channel 2 is Lower than the fire diffusion prevention channel 3 and having a large cross sectional area, and both ends of the main drain channel 2 are provided with mounting holes 21 to which the drain pipe 4 is mounted; The main diffusion passage 2 extends from the upper portion to the lower portion in the body 1 and the main drainage passage 2 extends in the same section, and the fire diffusion prevention passage 3 extends to a position lower than the partition wall 11. 5) to form an inlet portion 6 and a discharge portion 7 discharged portion of the water is introduced; The inlet 6 forms a blocking wall 61 in which an upper portion of the main drainage passage 2 is blocked to block the fire diffusion prevention channel 3, but the upper surface of the blocking wall 61 prevents the fire diffusion. An inclined surface 62 inclined in the direction of the water channel 3, and an underground water inflow hole 71 into which ground water flows into one side of the fire diffusion prevention channel 3 of the discharge portion 7; The inlet part 6 and the upper part of the discharge part 7 is made of a structure that is opened and closed by a cover 12, the outlet part 7 is closed by the cover 12 inside the inlet part 6 The cover 12 of the upper portion of the oil fire diffusion prevention manhole inside the tunnel, characterized in that made of a grate 13 so that the surface water can be introduced. The method of claim 1, The body 1 includes a main drainage passage 2, a fire diffusion prevention passage 3, a partition 11, a mounting hole 21, and a part of the fire diffusion prevention barrier 5 in the longitudinal direction on the upper surface thereof. A lower body 14 having two or more insertion grooves 17 extending therefrom; The bottom surface is formed with an insertion protrusion 18 coupled to correspond to the insertion groove 17 of the lower body 14, the upper surface is formed with two or more insertion grooves 17 extending in the longitudinal direction, the groundwater inflow hole An upper body 15 including an upper portion of the 71 and the blocking wall 61 and the fire diffusion preventing partition 5; A cover portion 16 formed at an bottom thereof with an insertion protrusion 18 coupled to the insertion groove 17 of the upper body 14 and having two cover mounting holes 19 formed on an upper surface thereof; Oil fire diffusion prevention manhole inside the tunnel, characterized in that consisting of a cover (12) for mounting on the cover (16).

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