JPH10237933A - Box arrangement water storage infiltration tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to also satisfy a storage capacity of water sufficiently without requiring any weir in a tank even on an inclined plane in a box arrangement water storage infiltration tank tentatively storing collected rain water in the ground to gradually exhaust the water thereafter. SOLUTION: This box arrangement water storage infiltration tank 1 is buried in the ground to use, the collected rain water is tentatively stored in the ground, it is used for the tank gradually exhausting the collected rain water thereafter, storage infiltrating boxes 2... are arranged on an inclined plane at specific intervals, it is so formed that a space between two boxes adjacent to each other is connected with a pipe line (joint pipe) 3, and the water storage infiltration tank is constituted of the whole arranged box 2. Each of the boxes 2 is horizontally set in a state to accumulate crashed stones 102 around the inside of an excavated section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box type storage and infiltration tank for temporarily storing collected rainwater underground and then gradually discharging the collected rainwater.

[0002]

2. Description of the Related Art In recent years, a storage tank as an underground regulating pond has been buried underground, and a large amount of rainwater has been collected in the storage tank, temporarily stored, and then gradually discharged, thereby concentrating on rivers. Regulating rainwater inflow is widely practiced. Since the storage tank is a relatively large facility with continuity, the storage tank is buried on a slope with a difference in elevation.

[0003] In addition, on slopes, there are many places where it is difficult to install large-scale facilities. In such places, a plurality of boxes as storage tanks, such as wells, are separately installed, and rainwater is discharged. They are temporarily stored.

[0004]

However, as described above, if the storage tank is installed inclined, the rainwater that has flowed in cannot be uniformly stored, and is stored in the tank from the downstream (obliquely lower part) side. Therefore, the water pressure on the downstream side may increase and rainwater may blow out from the storage tank, and in order to prevent this, it is necessary to provide a weir in the storage tank to relieve the water pressure.

When a plurality of boxes are installed independently, when one box is full, even if the other boxes have room, they cannot communicate with each other, so that the inflow water cannot be received and the storage is not possible. In many cases, the required capacity of the tank could not be sufficiently satisfied.

Further, the above-mentioned storage tank temporarily stores rainwater and then discharges it. However, the storage tank stores a large amount of the rainwater for a long period of time. There was also a request to use the water for fire prevention, which is apt to occur, or for domestic water shortage in the event of a disaster.

[0007] The present invention has been proposed in view of the above,
It is a first object of the present invention to provide a box-arranged storage and infiltration tank capable of sufficiently filling a capacity without providing a weir in the tank even on an inclined land.

It is a second object of the present invention to provide a box-arranged storage infiltration tank capable of applying stored rainwater to fire-prevention water and domestic water.

[0009]

Means for Solving the Problems In order to achieve the first object, the invention according to claim 1 is a box-type storage system for temporarily storing collected rainwater underground and then gradually discharging the collected rainwater. In the infiltration tank, by arranging storage and infiltration boxes having rainwater collection ports on the upper wall with water permeability on the peripheral wall at intervals, and connecting the box and the adjacent box with a pipe line The storage box is configured so as to form a storage and infiltration tank as a whole.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the pipe is provided at the upper end of each peripheral wall of the box and the adjacent box or at a position higher than the upper end. The openings provided are connected to each other.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the box comprises a concrete upper wall and a permeable concrete peripheral wall. , Characterized in that.

Furthermore, in order to achieve the second object, the invention according to claim 4 is directed to a box-arranged storage and infiltration tank for storing collected rainwater underground and gradually discharging a part of the collected rainwater. , A non-permeable peripheral wall lower part, a water-permeable peripheral wall upper part, and an upper wall having a rainwater collecting port, a storage infiltration box arranged at intervals, and the box and the adjacent box By connecting the pipes with each other, a storage and infiltration tank is formed as a whole of the arranged boxes.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram schematically showing an example of a box-arranged storage and infiltration tank of the present invention, FIG. 2 is a perspective view of the box from obliquely below, and FIG. 3 is a diagram showing a cross section taken along line XX of FIG. In these figures, a box-arranged storage infiltration tank 1 is a tank for temporarily storing collected rainwater underground and then gradually discharging the collected rainwater.
Then, storage boxes 2 for storage infiltration are installed at intervals,
The box 2 and the adjacent box 2 are connected by a conduit (connecting pipe) 3, and the arranged boxes 2... Constitute a storage permeation tank as a whole. Each box 2
Are installed horizontally with crushed stones 102 deposited around each excavation unit 101.

Note that a water permeable sheet 103 for preventing fine-grained soil from entering the crushed stone 102 is hung on the side surface of the excavation part 101.

The box 2 has a box shape with an open bottom surface, and includes a peripheral wall 21 having water permeability and an upper wall 22 having a rainwater collecting port 23. When the box 2 is installed in the excavation unit 101, the excavation unit 101 is filled with the crushed stone 102 up to a portion corresponding to the installation surface of the box 2, and the box 2 is placed on the crushed stone 102. In order to make it easier to clean the inflow soil and the like accumulated in the bottom portion 109 of the box 2, concrete is cast on site and averaged. The peripheral wall 21 is made of, for example, permeable concrete, and the permeable concrete is formed by joining aggregates with concrete components and providing fine continuous gaps between the aggregates so that water can pass therethrough. . In the peripheral wall 21 of the box 2, openings 24, 24 for connecting the connecting pipe 3 are formed at the center of each upper end in the walls at both ends in the length direction. 2, the openings 24 are connected to each other by the connecting pipe 3. On the upper part of the peripheral wall 21, a concrete upper wall 22 is formed continuously and integrally with the peripheral wall 21. The opening 24 may be provided at a position higher than the upper end of the peripheral wall, for example, at a side wall of a manhole 107 described later.

A water collecting port 23 is formed at an appropriate place on the upper wall 22, and a manhole 107 facing the ground surface is mounted on the water collecting port 23. The manhole 107 and a collecting hole provided on the ground surface are provided. The water is connected to the water basin 105 and the rainwater from the water basin 105 is guided and collected in the box 2. In addition, manhole 1
Reference numeral 07 also serves as an inspection port, and the inside of the box 2 can be inspected by opening the lid and allowing a worker to enter and exit. An artificial base is formed above the upper wall 22,
A sidewalk, a park, etc. can be made by surface treatment as appropriate.

In the box-arranged storage and infiltration tank 1 having the above structure, rainwater flows into each box 2 from each water collecting port 23. When rainwater is stored in any one of the boxes 2 and the water level is higher than the opening 24, the connection pipe 3
Flows into the adjacent box 2 below the slope. In this way, the arranged boxes 2... Communicate to form a large storage and infiltration tank 1 as a whole.

The rainwater stored in each box 2 then penetrates into the permeable concrete of the peripheral wall 21, further penetrates the crushed stone 101 from the permeable concrete, and is gradually discharged as groundwater through the permeable sheet 103.

As described above, in this embodiment, the storage / penetration box 2 is arranged and the arranged box 2 is communicated to form the storage / penetration tank 1 as a whole. Even in places where large-scale facilities cannot be installed, such as in densely populated residential areas, they can be easily installed and complement each other with storage capacity, so that sufficient storage tank capacity can be secured and connected. Because the pipes 3 are connected, it is advantageous for curved construction.

Further, since the connecting pipe 3 connecting the adjacent boxes 2 communicates with each other on the water surface where the boxes 2 are full, it is possible to prevent an excessive rise in water pressure inside each box 2.
Even without a weir, water pressure can be sufficiently reduced,
It is possible to make the box-arranged storage infiltration tank highly compatible with the sloped land.

Further, since the box 2 has a peripheral wall 21 having a porous structure and no bottom surface, the box 2 can be reduced in weight, and can be more easily transported and installed at the time of construction.

Next, a second embodiment of the box-arranged storage and infiltration tank according to the present invention will be described with reference to FIGS.

FIG. 4 is a view showing a second embodiment of the box-arranged storage and infiltration tank according to the present invention, and FIG. 5 is a perspective view of the box. 4 and 5, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The second embodiment is different from the first embodiment in that the box 5 constituting the box-arranged storage and infiltration tank 1A is of a well type, and rain water is poured into a lower part 511 of the well type box 5. The point is that rainwater is stored for a long period of time and the rainwater is permeated into the ground from the upper part 512.

That is, the storage and infiltration tank 1A of the box arrangement type
Each box 5 constituting the lower part 511 of the peripheral wall 51,
For example, it is possible to store rainwater for a long period of time by making it made of concrete and impermeable to water. The upper wall 52 is provided with a rainwater collecting port 53. The box-arranged storage and infiltration tank 1A is configured such that the storage and infiltration boxes 5 are arranged at intervals, and the box 5 and the adjacent box 5 are connected by a conduit (communication pipe) 3. The connection of the communication pipe 3 is performed by opening the opening 54 formed in the side wall of the manhole 107.
This is performed by connecting with the adjacent box 5.

In the second embodiment, since the boxes 5 are communicated with each other, the same effects as those of the first embodiment described above can be obtained, such as easy installation on a slope or the like, securing necessary capacity as a storage and infiltration tank, and the like. In addition, the following effects are exhibited. That is, rainwater is stored in the lower part 511 of the well-type box 5 for a long time, and the rainwater is made to permeate into the ground from the upper part 512, so that the underground regulating pond temporarily stores the rainwater and then discharges it. In addition to the above function, a large amount of rainwater can be stored in the lower part 511, so that it can be used for fire prevention water, which tends to be scarce on sloping terrain or densely populated houses, or for daily life water shortage in the event of a disaster. It is a great place to contribute to.

In the above description, the case where the boxes 2 and 5 are installed on the sloping land 100 has been described. However, the boxes 2 and 5 can be similarly installed on a small park or a road in a densely populated house. For installation on level ground, boxes 2,5
The buried depths may be sequentially changed to arrange and communicate, or they may be arranged and communicated at the same depth.

Further, in the second embodiment, a plurality of well-type boxes 5 are arranged and communicated with each other. However, even if the well-type boxes 5 are installed independently, the above-described effect, that is, the stored water is prevented from being fired. The effect that water can be applied to domestic water can be similarly exhibited.

Furthermore, the permeable peripheral wall 21 and the upper peripheral wall 51
2 is made of permeable concrete, but it may be formed as a peripheral wall having a number of slits and holes.

[0030]

Since the present invention has the above-described configuration,
The following effects can be obtained. According to the first aspect of the present invention, the storage infiltration box is arranged, and the arranged boxes are communicated with each other to form a storage infiltration tank. Even in places where large-scale facilities cannot be installed, such as can be easily installed, and because they complement each other, the storage capacity required for the storage tank can be sufficiently secured, and they can be connected by pipes. It is also advantageous for curved construction.

According to the second aspect of the present invention, the opening provided at the upper end of each peripheral wall of the box and the adjacent box or at a position higher than the upper end is connected to form a conduit, and the water surface on which the box becomes full Because they communicate with each other,
The water pressure inside the box does not rise excessively due to the inflow water from the adjacent box, so it is possible to sufficiently reduce the water pressure without the need for a weir, and the box type storage and infiltration tank is suitable for sloped land High performance.

Furthermore, according to the third aspect of the present invention, the box is constituted by the upper wall made of concrete and the peripheral wall made of permeable concrete, so that the weight can be reduced and the transportation and installation at the time of construction can be made easier. Can be done.

In the invention according to claim 4, a well-type box is used, rainwater is stored for a long time in the lower part of the well-type box, and the rainwater permeates into the ground from the upper part. Therefore, in addition to the function of an underground regulating pond that temporarily stores rainwater and then discharges it, by storing a large amount of rainwater at the bottom, fire water or disasters that are likely to be scarce on slopes or densely populated areas It can be used for lack of domestic water at the time of outbreak, which greatly contributes to the effective use of underground.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an example of a box-arranged storage and infiltration tank of the present invention.

FIG. 2 is a perspective view of the box from obliquely below.

FIG. 3 is a view showing a cross section taken along line XX of FIG. 1;

FIG. 4 is a diagram showing a second embodiment of the box-arranged storage and infiltration tank of the present invention.

FIG. 5 is a perspective view of a box according to the second embodiment.

[Explanation of symbols]

 1, 1A Box-arranged storage and infiltration tank 2, 5 Box 3 Connecting pipe (pipe) 21, 51 Perimeter wall 22, 52 Upper wall 23, 53 Water collecting port 24, 54 Opening 100 Slope land 101 Excavation unit 102 Crushed stone 103 Permeable sheet 105 Collecting water 107 manhole

Claims (5)

[Claims] Claims: 1. A box-arranged storage and infiltration tank for temporarily storing collected rainwater underground and then gradually discharging the water, wherein the peripheral wall has water permeability and an upper wall has a rainwater collection port for storing and infiltrating. A box arrangement type, wherein boxes are arranged at intervals, and the box and the adjacent box are connected by a pipeline so that the entire arranged box forms a storage infiltration tank. Storage infiltration tank. 2. The box-arranged storage according to claim 1, wherein the conduit connects openings provided at an upper end of each peripheral wall of the box and an adjacent box or at a position higher than the upper end. Infiltration tank. 3. The storage / infiltration tank according to claim 1, wherein the box comprises an upper wall made of concrete and a peripheral wall made of permeable concrete. 4. A box-arranged storage infiltration tank for storing collected rainwater underground and gradually discharging part of the collected rainwater, comprising: a non-permeable lower wall, a permeable upper wall, and a rainwater collection port. By disposing a storage infiltration box having an upper wall having an interval, and connecting the box and an adjacent box by a conduit, the storage infiltration tank is formed as a whole of the arranged boxes. A box-arranged storage and infiltration tank characterized by comprising: 5. A storage infiltration box, comprising: a lower part of a non-permeable peripheral wall, an upper part of a permeable peripheral wall, and an upper wall having a rainwater collecting port, and buried in the ground for use. .