JPH11222885A - Water storage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain water storage facilities having a simple construction by filling crushed stones in an impermeable sheet, providing a built-in unit structural body within the crushed stones and thereby reinforcing around the unit structural body with the crushed stones. SOLUTION: A hole such as a rectangular parallelepiped shape is made by excavating the ground, and this excavated hole is covered with an impermeable sheet and the sheet is laid to a sack shape. Crushed stones 11 are laid to a constant thickness inside the sack-shaped impermeable sheet. A unit member 1 is placed oppositely and combined to a unit structure in one united body. Next, gaps of the unit structural body are filled up with crushed stones 11, further, the crushed stones 11 are stacked up to cover and embed the unit structural body, and the inside of the sack of the impermeable sheet 10 is filled up with crushed stones 11 without creating gaps or hollow portions. Then, the upper surface of the impermeable sheet 10 is closed, a plug is attached to the opening 12 and projected out, and this is used as inlet/outlet 13 of water. This inlet/outlet 13 is exposed above the ground, the impermeable sheet 10 is cover with earth and buried thereby completing a water storage construction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water storage structure in which a box-shaped unit structure using unit members is embedded in crushed stone.

[0002]

2. Description of the Related Art The present inventor has already disclosed Japanese Patent Publication No. 4-2664.
In No. 8, we proposed a structure to use as a storage and infiltration facility for rainwater etc. using a structure in which container-like members are arranged vertically and horizontally and up and down, and further developed a water storage structure in which the unit structure is covered with crushed stone. Thus, the present invention has been completed.

[0003]

SUMMARY OF THE INVENTION The present invention provides a water storage structure in which crushed stone is filled in a bag covered with a water-blocking sheet and a unit structure is built in the crushed stone to increase the strength. is there.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a waterproof sheet made of a water-impermeable material formed in a bag and built in a hole formed in the ground. A water inlet / outlet communicating with the water-impervious sheet, a unit structure in which a container-shaped unit member having an open surface is integrally assembled with the water-impervious sheet by aligning the openings, and a unit structure. Technical measures are taken to consist of block pieces such as crushed stones filled in the water-impervious sheet so as to cover. According to the second aspect of the present invention, there is provided a technical means in which the unit member has a base having an arc-shaped cross section and bearing pieces extending outward at both ends of the base. Furthermore, in the invention according to claim 3, the unit member has a substantially box-shaped base portion that is concavely recessed.
It has taken the technical measures. In the invention of claim 4,
A technical measure is taken in which one or a plurality of columnar or cylindrical protrusions are provided in the recessed portion of the base.
According to the fifth aspect of the present invention, there is provided a technical means in which a plurality of through holes are formed in the base of the unit member. Further, in the invention according to claim 6, the unit structure is provided with an interposed member set to a predetermined length between opposed bearing pieces of the vertically opposed unit member, thereby forming the unit structure vertically. A technical measure is taken to increase the width.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a water storage structure using a unit member according to the present invention will be described below with reference to the drawings. The water storage structure shown in FIG. 1 includes a unit structure having a hollow portion that connects and communicates unit members 1 above and below, and crushed stones 11 stacked around the unit structure.
And a bag-shaped impermeable sheet 10 that covers the crushed stone 11 and an entrance 13 provided in the impermeable sheet 10.

The unit member 1 is composed of a plate-shaped substrate portion 2 having a substantially semicircular cross section, and a support piece portion 4 extending horizontally outward from both ends of the substrate portion 2. ing. In the figure, 5 is a through hole. In the illustrated example, the unit members 1 are vertically symmetrically stacked and combined so as to form a cylindrical body having a substantially circular cross section. The opening at the end of the cylindrical body is left open, but may be closed by a separate closing plate (not shown). The closure plate may be perforated or solid without perforations.

Here, the substrate 2 may be provided with a cylindrical body 3 as shown by a dotted line in FIG. That is, the number of the cylindrical bodies 3 may be one or more, but the illustrated example illustrates a case where only one row is provided at the central most depressed portion. This cylinder 3
Although not shown, it is formed of a hollow body having an opening on the bottom surface of the substrate portion 2 and is formed integrally with the substrate portion 2.
The top of the cylindrical body 3 may be open or closed, but in the illustrated example, the top is closed by a top wall. Furthermore, the cylindrical body 3 may have an arbitrary cross-sectional shape such as a polygon or an ellipse, but in the illustrated example, has a cylindrical shape having a circular cross-section. The peripheral wall of the cylindrical portion 3 is formed to have a tapered cross section so as to have a gradually decreasing diameter toward the top, and has a truncated conical shape. In the case of FIG. 2, the cross-sectional shape of the substrate portion 2 is a semicircular shape, but may not be a semicircular shape as long as it is an arc shape.

Next, the unit member 1 shown in FIG. 3 has a structure in which the substrate portions 2 are provided in two rows, but can be bent at the center of the support piece portion 4 between the substrate portions 2. The hinge portion H is provided. Accordingly, the unit member 1 can be assembled in a circular cross section by bending the support piece 4 at the hinge H and overlapping the substrate 2 on one substrate 2 with the other. At this time, since the support pieces 4 provided at the ends of the respective board parts 2 are aligned, a known locking or fixing structure is provided at this part, and the two can be connected.

In the unit member 1 shown in FIG. 4, three substrate portions 2 each having a substantially semicircular cross section are arranged in series, and a space between the substrate portions 2 is arranged via an intermediate support piece portion 4 'extending horizontally from an end. The outer end of the substrate 2 at both ends is provided with an outer support piece 4 extending horizontally outward. Other structures are the same as those of the above embodiment. In this embodiment, a structure in which the three substrate portions 2 are arranged in series is shown, but an arbitrary plurality may be integrally connected, and the number is not particularly limited.

FIG. 5 is a perspective view of the unit member 1. Many through holes 5 are formed in each substrate section 2.
In the illustrated example, a structure in which small holes of the same shape are regularly arranged is illustrated. However, in this embodiment, the structure of the through hole 5 provided in the substrate portion 2 is not particularly limited. It is sufficient that the holes are formed so as to have air permeability.

The through hole 5 may be, for example, a portion surrounded by ribs crossing vertically and horizontally. The size of the through hole 5 can be appropriately set according to the application, and when there is a substance to be stored or filled in the unit member 1, it is desirable to set the size so that the substance does not fall off.

The unit member 1 can be connected to a unit member disposed outside thereof via a connecting means provided on the support piece. The connecting means 6 is composed of a pair of engaging means (for example, concave and convex engaging means), one of the supporting pieces is provided with one engaging means (for example, a protrusion), and the other supporting piece is provided with the other of the other supporting pieces. A structure in which an engaging means (for example, a concave portion) is provided to engage the engaging means of different bearing pieces of the adjacent unit members 1 and 1 or a similar fixing means (one is a screw hole, the other is a bolt, etc.) Can be used. Further, a known structure such as a structure in which an engaging or fixing member provided separately is locked or fixed to a receiving portion provided on the support piece portion and the both are connected to each other can be used. Therefore, the unit member 1 can be arbitrarily connected also in the up-down direction, the left-right direction, or the front-back direction.

The connecting means of the bearing piece 4 may be directly provided with locking or fixing means, or may be fixed with each other using other locking tools or fixing tools. In any case, any structure may be used as long as the structure is such that the support pieces are fixed or restrained to each other. In addition, the fixing or engaging means may be formed integrally with the supporting piece 4 or vertically and horizontally and integrally with the supporting piece 4, or formed integrally with one another and formed separately with the other. May be used.

Next, a unit member 1 'shown in FIG. 6 shows a different embodiment in which a projecting wall portion 3' extending in the circumferential direction is provided as a projecting portion. In the case of the illustrated example, the protruding wall portion 3 'is formed of a protruding wall having an arc-shaped cross section. In the present embodiment, the protruding wall portion 3 ′ has one protruding portion before and after the substrate portion 2 and two protruding portions midway, but the protruding wall portions (3 ″ for convenience of description) provided before and after, respectively. Is set to have the same shape as one of each of the two divided protruding wall portions 3 'so that the protruding wall portion 3' is combined into one protruding wall portion 3 'when the unit members are connected back and forth. Since other configurations are the same as those of the above-described embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

Thus, the strength of the unit member 1 'can be increased, and the protruding wall portion 3' can be formed similarly to the cylindrical body.
Can act as a resistance to the flow of water in the flow path formed by the unit member 1 ', and can block a steep flow to slow down the flow, so that rainwater can effectively penetrate downward. The protruding wall portion 3 ′ protrudes from the substrate portion 2 and is formed in a series along the inner circumferential direction of the curved surface of the substrate portion, but the cross-sectional shape thereof is not limited to an arc shape but may be any shape such as a rectangle or a polygon. It may be shaped. In addition, the protruding wall portion 3 'has been exemplified to have a shape which crosses the substrate portion 2 in a direction orthogonal to the axial direction in a series, but it has a structure inclined with respect to the axial direction, or a dividing portion at one or a plurality of intermediate positions. May be provided, or a configuration may be provided in which the front side is alternately closed.

In the assembling structure shown in FIG. 7, the upper and lower unit members 1, 1 are connected to each of the intermediate bearing pieces 4 and the outer bearing pieces 4 respectively.
Are aligned vertically and face each other, and each intermediate bearing piece 4
A vertically long cylinder can be formed by attaching an interposition member 8 between the outer bearing piece 4 and the outer bearing piece 4. This interposed member 8
Is provided with a box-shaped frame 8a having a predetermined height set to a length corresponding to the entire length of the intermediate bearing piece 4 'or the outer bearing piece 4 in the longitudinal direction, and provided in the frame 8a. And a wall member 9 having a through hole. In the case of the illustrated example, the wall member 9 is made of a mesh or a grid,
It has a structure with air permeability. The structure of the interposition member 8 may be any structure as long as the wall surface has water permeability and air permeability, and can seal between the unit members 1 and 1 arranged above and below. Conversely, when a sealing property is required between the interposed members 8, a closed wall structure can be used without providing a through hole in the wall member.

Also, above and below the frame 8a of the interposition member 8,
It is preferable to provide a locking means or a fixing means for vertically connecting with the intermediate bearing piece 4 ′ and / or the outer bearing piece 4 in contact. Therefore, for example, the upper and lower unit members 1, 1 are integrally connected by screwing or bolting the frame 8a of the interposition member 8 and the intermediate support piece 4 'and / or the outer support piece 4 with screws or bolts 6. And a unit structure.

Thus, even if it is a structure using two unit members, it can be formed in a desired size by adjusting the length of the interposition member 8. Therefore,
A plurality of interposed members having a plurality of lengths (heights) are prepared in advance, and if necessary, an interposed member having a desired length (height) is selected, and an interposed member having this length (height) is selected. Unit members 1, 1
By arranging them between them, a pipe body of a predetermined size can be assembled with the unit members 1 and 1. Here, the interposed member 8 is a single member, but the interposed member having a reference size is vertically connectable, and a predetermined number is combined as necessary to assemble one interposed member. (Not shown).

Next, in the embodiment shown in FIG. 8, the height is set by interposing an intervening member 8 between the outer support pieces 4 at both ends of the unit members 1 and 1 as in the previous embodiment. In Although,
A different embodiment in which no intervening member is provided between the intermediate bearing pieces 4 ', and the strength is reinforced by interposing a rod 15 such as a pipe between the bottom portions which are the most depressed between the vertically opposed substrate portions 2. Is shown.

In this case, a locking concave portion for fitting the rod member 15 or a locking projection fitting to the rod member 15 for positioning the rod member 15 is formed in the substrate portion 2 in advance. Is also good. Since the strength can be improved by using the rod member 15, the interposed member 8 as described above does not need to be provided between the intermediate support pieces 4 ', and the internal circulation can be smoothly performed. Can be done. Other structures are the same as those of the above-described embodiment, and the description thereof will be omitted.

Next, FIG. 9 shows that the unit member 1 is composed of the base plate 2 having a trapezoidal cross section, and the connecting pieces 6 are fixedly attached to the support pieces 4 and 4. For example, a hole is formed in the support piece 4, and a pair of shafts that fit into the hole are provided in the connecting tool 6, each of which is fitted in a hole of the support piece of the adjacent unit member and is horizontally inserted. Direction. Other structures are the same as those of the above-described embodiment, and the description thereof is omitted.

Next, an example of a water storage structure using the unit member 1 will be described. First, a hole of an arbitrary shape, for example, a rectangular parallelepiped is dug in the ground. Next, a bag is laid in the hole with a waterproof sheet such as a rubber sheet covering the hole. At this time, a reinforcing plate such as styrene foam may be stretched in a rectangular parallelepiped along the inner peripheral surface of the rubber sheet. Then, crushed stones 11 are spread all over the inside with a certain thickness. And this crushed stone 1
After laying the unit members 1, the unit members 1 are placed facing each other, and assembled together to assemble a unit structure.

Next, the crushed stones 11 are packed so as to fill the gaps of the unit structure, and the crushed stones 11 are stacked so as to cover and bury the unit structure, and the crushed stones 11 are filled in the bag of the water-blocking sheet 10 without gaps. . Then, the upper surface of the water-impervious sheet 10 is closed, and a plug is attached to the opening 12 so as to protrude therefrom. Note that a cap 14 for opening and closing may be attached to the entrance 13. Doorway 1 above
3 is exposed from the ground and covered with soil on the impermeable sheet 10 to complete the water storage structure.

When water is injected from the entrance 13, the water passes through the crushed stone 11, passes through the through hole 5 of the unit member 1 or the through hole of the interposed member 10, and enters the hollow of the unit structure. Furthermore, it can be flooded into the crushed stone below from the through hole of the unit member. Therefore, when using the water stored in the unit structure, the water-blocking sheet is peeled off, the crushed stones are removed, the unit structure is opened, and the water stored in the hollow is suctioned with a hose or the like. Can be provided.

In the above embodiment, the unit structure has a structure in which the unit members are vertically symmetrically stacked in two stages. However, in the case of a large water storage structure, as shown in FIG. And it is sufficient. In this case, the unit member 1 arranged at the upper part of the lower stage and the unit member 1 arranged at the lower part of the upper stage are engaged or fixed by the engaging or fixing means 6 ′ to connect the unit members in the upper and lower stages. The structure can be shaped. When the cylindrical protrusions 3 are provided, the protrusions 3 may be vertically connected between the opposed front ends and the bottoms of the protrusions 3 arranged on the same line using a connecting tool for restraining the protrusions. In addition, various design changes can be made without changing the gist of the present invention.

[0026]

According to the present invention, since the crushed stone is filled in the impermeable sheet and the unit structure is built in the crushed stone, the periphery of the unit structure is reinforced by the crushed stone, and the strength is increased.
Since it has water permeability due to the gap between the crushed stones, it can be used as a water storage facility with a simple structure. In particular, since only the crushed stones need to be filled in the impermeable sheet, any shape of the bag of the impermeable sheet can be used, and the versatility is excellent.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a water storage structure.

FIG. 2 is a sectional view of a unit member.

FIG. 3 is a side view of a folding unit member.

FIG. 4 is a cross-sectional view of a different embodiment of a water storage structure using three unit members.

FIG. 5 is a perspective view of a triple unit member.

FIG. 6 is a perspective view showing a different embodiment of a unit member provided with a raised portion.

FIG. 7 is a perspective view showing a unit member of a different embodiment without a through hole.

FIG. 7 is a sectional view showing another embodiment of the water storage structure using the interposed member.

FIG. 8 is a cross-sectional view showing still another embodiment of a water storage structure using an interposed member and a rod such as a pipe.

FIG. 9 is a cross-sectional view showing another embodiment of the water storage structure using a cage-shaped unit member.

FIG. 10 is a cross-sectional view showing an embodiment in which unit members are connected in upper and lower stages.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unit member 2 ... Substrate part 3 ... Cylindrical body 3 '... Protrusion wall part 4 ... Support piece part, outer support piece part 4' ... Intermediate support piece part 5 ... Through-hole 8 ... Interposed member 10 ... Water-blocking sheet 11 ... Crushed stone 12 ... Opening 13 ... Doorway

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 25, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a water storage structure.

FIG. 2 is a sectional view of a unit member.

FIG. 3 is a side view of a folding unit member.

FIG. 4 is a cross-sectional view of a different embodiment of a water storage structure using three unit members.

FIG. 5 is a perspective view of a triple unit member.

FIG. 6 is a perspective view showing a different embodiment of a unit member provided with a raised portion.

FIG. 7 is a sectional view showing another embodiment of the water storage structure using the interposed member.

FIG. 8 is a cross-sectional view showing still another embodiment of a water storage structure using an interposed member and a rod such as a pipe.

FIG. 9 is a cross-sectional view showing another embodiment of a water storage structure using a cage unit member.

FIG. 10 is a cross-sectional view showing an embodiment in which unit members are connected in upper and lower stages.

[Description of Signs] 1 ... Unit member 2 ... Substrate 3 ... Cylinder 3 '... Projected wall 4 ... Bearing piece, outer bearing piece 4' ... Middle bearing piece 5 ... Through-hole 8 ... Interposed member 10 ... Waterproof sheet 11 ... Crushed stone 12 ... Opening 13 ... Doorway

Claims (6)

[Claims] 1. A water-blocking sheet built in a hole formed in the ground and formed in a bag shape, a water inlet / outlet communicating with the water-blocking sheet, and a container-shaped one-side opening in the water-blocking sheet. A water storage structure comprising: a unit structure in which a unit member is integrally assembled with its opening aligned; and a block piece such as crushed stone filled in the water-impervious sheet so as to cover the unit structure. . 2. The water storage structure according to claim 1, wherein the unit member has a base having an arc-shaped cross section and bearing pieces extending outward at both ends of the base. 3. The water storage structure according to claim 1, wherein the unit member has a substantially box-shaped base recessed in a concave shape. 4. The water storage structure according to claim 2, wherein one or a plurality of columnar or cylindrical protrusions are provided in the recessed portion of the base. 5. The water storage structure according to claim 2, wherein a plurality of through holes are formed in a base of the unit member. 6. The vertical width of the unit structure is set to be long by interposing an intervening member having a predetermined length between opposing bearing pieces of the unit member vertically opposing. A water storage structure characterized by the following.