JPS6329035Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a rainwater infiltration filtration device for road gutters.

[Conventional technology]

With the paving of urban roads and sidewalks, and the development of residential areas around cities, there is a risk that even if there is only a small amount of rainfall, rainwater from roads and residential areas will be discharged into road gutters and overflow, causing problems with traffic. Furthermore, since it is impossible to expand the area of rivers within cities, the drainage capacity of rivers is limited, so if more than a certain amount of drainage is carried out, there is a risk of developing into flood damage. Therefore, recently, there has been a need to treat rainwater and road drainage in urban areas, land development areas, etc. around rivers within the area. Particularly in crowded urban areas, rainwater drainage from roads and houses flows into the road gutter, or only rainwater drainage from the road flows into the road gutter and is discharged into rivers, etc. However, depending on the situation, immediate drainage may cause a disaster, so it is becoming necessary to limit the amount of water discharged while discharging water.

[Problem that the invention attempts to solve]

In order to solve the above-mentioned situation, it is desired to develop a road gutter that can permeate and filter rainwater, but at present no satisfactory such device has been developed.

[Means for solving problems]

In view of the above-mentioned circumstances, the present invention was developed with the purpose of providing a rainwater infiltration filtration device for roadside ditches that combines a storage method and an underground infiltration method. A cylindrical socket is inserted through the center of the bottom of a U-shaped gutter block, a filter cylinder is erected in the socket, and a lid plate having a small hole is placed on the top of the filter cylinder. Providing grooves on the inner surface and bottom of the side walls near both end faces of the block and fitting a water-permeable partition plate therein, and filling the space separated by the water-permeable partition plate with sand,
Furthermore, a water-permeable perforated holding plate is placed in the hole through the filter cylinder, and grooves are formed on the inner surfaces of both side walls at both ends of the block with the same cross section as the block, and oil removal plates are installed in the grooves. It is characterized by a series of fitted blocks.

[Function] That is, the device of the present invention is designed to filter and store rainwater when it flows into a roadside gutter, and also to allow it to permeate underground.

〔Example〕

Next, an example of implementation of the present invention will be explained with reference to the drawings.

A is a U-shaped side gutter block whose depth is deeper than the inner width of the groove, and grooves 1 with a width slightly larger than the thickness of the water-permeable partition plate described later are formed at both longitudinal ends of the block on the inner surface of the side wall 2 and the bottom 3. A cylindrical socket 4 is attached to the center of the bottom part 3 so as to pass through the bottom part 3.

B is a block of the same shape and size as block A, and has a groove 12 on the inner surface of the side wall 11 with a width slightly larger than the thickness of the oil removal partition plate to be described later, leaving a certain height above the bottom 13 and facing the both side walls 11, 11. There are several books available.

D is a water-permeable partition plate made of a porous concrete plate, and has a length slightly lower than the depth of the inner section of the side gutter, and a width adapted to the inner periphery of the gutter 1.

E is a holding plate made of a porous concrete plate, the width 21 is slightly smaller than the inner width of block A, and the length 22 is the inner edge 1 of groove 1 of block A.
A and a notch 23 for a handle is provided on the side surface, and a hole 24 passing through the filter cylinder described later is provided approximately in the center.

F is a filtration cylinder consisting of a perforated cylinder 31, the inner diameter of the cylinder 31 is large enough to fit into the outer diameter of the socket 4 of block A, and a cylinder made of nonwoven fabric, felt, etc. is attached to the outer periphery. A shaped filter 32 is fitted over substantially the entire length, and a lid plate 34 having a small hole 33 is placed on the top.

G is an oil removal plate shaped to fit into the groove 12 of block B.

Note that C is a gutter block that has the same shape and size as blocks A and B, and has no grooves or the like.

As shown in FIG. 8, an example of the construction of the device of the present invention is shown in FIG.
The case where there is is explained as follows.

First, a trench 44 is provided under the tree-planting zone 43. This trench 44 is made by excavating the ground under the tree-planting zone 43 in a ladder shape, and laying gravel or chestnut stone 45 at the bottom of the trench 44. are arranged as required, and then filled with gravel or chestnut stone 45, a sand prevention net 47 is placed on top of the net, and then earth and sand 48 is filled.

Next, the ground is excavated at the construction site, and a pipe 49 is first laid so as to be connected to the trench pipe 46, and connected to the socket 4 of block A1 with an elbow 50 or the like. Next, block B11 is laid in contact with the end of block A1, block C is laid down as blocks C11, C12, C13, etc. for the required length, block B12 is laid, and then block A
Lay 2.

By the above method, blocks B21, C2i, B
22, A3... are laid in this order.

Once you have finished laying the blocks as described above,
Water-permeable partition plates D1 and D2 are installed in grooves 1 on both sides of block A.
The filter cylinder F is fitted into the socket at the bottom, and the top is erected so that it is slightly higher than the full water level of the block A, and a cover plate 34 having a small hole 33 is attached.

Next, the space 51 divided by the water-permeable partition plates D1 and D2 is filled with sand 52 up to the top of the partition plates D1 and D2, and the sand 52 is passed through the filter cylinder F into the hole 24 in the center of the holding plate E. 52.

Oil removal plates G are dropped into the grooves 12 on the inner surfaces of both side walls 11 and 11 of block B, respectively, to complete the side grooves.

By doing this, when it rains, when rainwater flows from the roadway 41, sidewalk 42, etc. over the entire line of the gutter formed by blocks A, B, and C, it is first collected in the gutter formed by blocks C and B. As the reservoir water level rises, block C
Since the rainwater that flows down into the water contains mud and dirt, it is temporarily stored in the filter cylinder F of block A, and coarse gravel, sand, etc. settle out and the oil gradually rises to the surface, and the oil in block B. The oil mixed in the rainwater further rises to the surface on the removal plate G, passes through the rainwater through the space between the lower end of the oil removal plate G and the bottom 13, and the oil and water are separated and flow toward the block A, forming a water-permeable partition. Rainwater passes through plate D, 52 layers of sand (filtered sand), filter 32, and enters filter cylinder F in a clean state, and air in trench 44 passes through pipe 49, trench pipe 46, and filter cylinder. The rainwater is released to the outside world from the small hole 33 at the top of the body F, flows down into the trench pipe 46, flows out from the trench pipe 46 to the outside of the pipe 49, and gradually sinks into the ground while filling the surrounding gravel layer. By permeating into the water, rainwater from the gutters is removed.

〔effect〕

Since the present invention is as described above, it is suitable as a rainwater permeation filtration device for a road gutter.In particular, the holding plate E of the block A is provided at a position slightly lower than the upper end of the water passage cross section of the gutter, and the water permeable partition plate D Since both are located at approximately the same position, when the gutter is full of water, the gutter along the entire line is communicated with each other. In addition, in case of emergency, if a drainage notch is provided to drain water into a river etc. at a position higher than the top surface of the water-permeable partition plate D, even if it rains,
Since rainwater is stored in the side gutters and permeates underground, it is only when the side gutters become full and exceeds the underground infiltration capacity that water overflows from the drainage notches and is discharged into the river. It takes a considerable amount of time, the amount of runoff is small, and the impact on flowing water in rivers can be extremely minimized.
Furthermore, although various problems have recently appeared due to a decline in the groundwater level, by using the device of the present invention to return rainwater underground, there are many advantages such as helping to prevent the decline in the groundwater level.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of block A, Fig. 2 is a perspective view of block B, Fig. 3 is a perspective view of block C, Fig. 4 is a perspective view of the water-permeable partition plate, and Fig. 5 is a perspective view of block A.
Fig. 6 is a perspective view of the filtration cylinder;
Fig. 7 is a perspective view of an oil removal plate, Fig. 8 is a perspective view showing an example of road gutter construction using the device of the present invention, Fig. 9 is a plan view of a completed road gutter, and Fig. 10 is a side view as well. , FIG. 11 is a sectional view taken along line XX in FIG. 10. A, B, C...Block, D...Water-permeable partition plate,
E...Block A holding plate, F...Filtering cylinder, 1
... Groove, 2 ... Side wall, 3 ... Bottom, 4 ... Socket, 11 ... Side wall, 12 ... Groove, 13 ... Bottom,
23... Notch, 24... Hole, 31... Cylindrical body, 32
...Filter, 33...Small hole, 34...Lid plate.

Claims (1)

[Scope of utility model registration request] A cylindrical socket is attached to the bottom center of a U-shaped side gutter block whose depth is deeper than the inner width thereof, and a filtration cylinder is erected in the socket, and a lid having a small hole at the top of the filtration cylinder. A board is placed on the block, grooves are formed on the inner surface and bottom of the side wall near both end faces of the block, and a water-permeable partition plate is inserted into the block, and the space separated by the water-permeable partition plate is filled with sand. A perforated holding plate is placed in the hole through the filter cylinder, and the block has grooves on the inner surfaces of both side walls with the same cross section as the block on both end sides, and oil removal plates are fitted in the grooves. A rainwater infiltration filtration device for a road gutter, characterized in that it is constructed by installing the following in series.