JP5712253B2 - Underground seepage channel block and channel using the same - Google Patents

Description

  The present invention relates to an underground seepage-type waterway block and a waterway using the same, and more particularly to an underground seepage-type waterway block that allows a part of rainwater or the like flowing through the waterway to penetrate underground and a waterway using the same.

As urbanization progresses in recent years, paving of the ground around roads and buildings is progressing. Therefore, most of the rainwater or the like is discharged into the sea through a water channel such as a gutter without penetrating from the ground to the underground. As a result, groundwater is depleted, causing ground subsidence.
On the other hand, if the water does not permeate from the ground to the underground, the amount of water flowing through the water channel increases. In particular, since heavy rain due to abnormal weather is increasing recently, the amount of water flowing through the canal increases and exceeds the amount that is drained, which causes flooding and overflowing water from the canal.
Therefore, conventionally, an underground seepage type waterway block that can infiltrate a part of water such as rainwater flowing through the waterway into the underground and a waterway using the same have been proposed.

  As such an underground seepage type waterway block and a waterway using the same, there is one disclosed in Patent Document 1, for example. This underground seepage-type water channel block is formed in a U-shaped cross section by both side walls and a bottom wall. The bottom wall is made of porous concrete having water permeability, and a part of the water flowing in the water channel penetrates into the underground through the bottom wall. The bottom wall can be replaced because it is clogged with dirt and dust.

JP 2002-242288 A

  However, the conventional underground seepage type waterway block and waterway have a problem in that it is necessary to replace the bottom wall in order to maintain the water permeability, and to perform regular maintenance.

  The present invention was made paying attention to the above-mentioned conventional problems, and provides an underground seepage-type waterway block that does not require periodic maintenance for maintaining water permeability and a waterway using the same. Objective.

The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 is an underground seepage-type water channel block having both side walls and a bottom wall, and an opening formed in the bottom wall; A water guide passage formed by a rising portion rising from a wall and gradually decreasing in width toward the opening, and having an opening side end at the bottom of the water guide passage at a position higher than the upper surface of the opening. It is an underground seepage type waterway block.

The invention according to claim 2, underground UNDERGROUND osmotic waterway block according to claim 1, the lower surface of the bottom wall along the edge of the opening, and wherein the reinforcing portion that protrudes downward is formed It is an osmotic channel block.

The invention of claim 3 is a water channel comprising the underground seepage type water channel block according to claim 1 or 2 provided in a groove formed by digging the ground. A gravel layer having a property is formed, and the underground seepage type waterway block is installed in the gravel layer.

The invention of claim 4 is characterized in that, in the water channel described in claim 3 , a non-permeable water channel block having both water permeability and a bottom wall is connected to the underground seepage water channel block. It is a waterway.

  According to the underground seepage type waterway block and the waterway using the same according to the present invention, it is not necessary to perform periodic maintenance for maintaining water permeability for allowing rainwater or the like to penetrate into the underground.

It is a partially broken perspective view of the underground seepage type waterway block concerning a first embodiment of the present invention. It is a top view of the underground seepage type waterway block of FIG. It is a top view of the groove | channel which arrange | positions the underground seepage type waterway block of FIG. 1 in order to make a waterway. It is AA sectional drawing of FIG. It is a top view for demonstrating the structure of the water channel using the underground seepage-type water channel block of FIG. It is BB sectional drawing of FIG. It is a top view for demonstrating the flow of the water in the water channel using the underground seepage-type water channel block of FIG. It is CC sectional drawing of FIG. It is sectional drawing for demonstrating the flow of water in the water channel using the underground seepage type water channel block which concerns on 2nd embodiment of this invention. It is a perspective view which shows the lower surface side of the underground infiltration type waterway block which concerns on 3rd embodiment of this invention. It is DD sectional drawing of FIG.

The underground seepage type waterway block 1 according to the first embodiment of the present invention will be described with reference to FIGS.
Reference numeral 3 denotes a water channel block main body. The water channel block main body 3 has left and right side walls 5 and a bottom wall 7 and is formed in a substantially U shape in a front view. A square opening 9 is formed in the bottom wall 7, and this opening 9 is provided slightly rearward.
A pair of rising portions 11 is formed on the upper surface of the bottom wall 7, and a water conduit 13 is formed in a region surrounded by the pair of rising portions 11 and the bottom wall 7. The water guide channel 13 is connected to the edge of the opening 9 from the front end portion of the water channel block body 3. The pair of rising portions 11 have a square shape in plan view, and the width of the water guide path 13 gradually decreases toward the opening 9.

The construction method of the water channel 14 using the underground seepage-type water channel block 1 will be described.
As shown in FIGS. 3 and 4, a groove M is dug in the ground, a predetermined portion of the bottom of the groove M is dug somewhat deeply, and a crushed stone S of about No. 4 single grain size is placed on the deeply dug as a gravel. Layer 12 is formed. A location where the gravel layer 12 is formed is a portion corresponding to an opening 9 of the underground seepage type waterway block 1 described later. Next, the discarded concrete C is placed except for the gravel layer 12 at the bottom of the groove M. By placing the discarded concrete C, the horizontal and inclination of the groove M is adjusted.

An underground seepage-type waterway block 1 and a non-permeable-type waterway block 15 are installed on the discarded concrete C of the groove M. The non-permeable-type water channel block 15 is composed of a bottom wall 8 and a side wall 10 and is U-shaped in a front view, does not have the opening 9 and the rising portion 11, and does not have water permeability. Two non-permeable channel blocks 15 are disposed between the underground seepage channel block 1. The underground seepage type waterway block 1, the non-permeable type waterway block 15, and the non-permeable type waterway block 15 are connected to each other to form a waterway 14. The underground seepage channel block 1 is provided so that the opening 9 corresponds to the gravel layer 12. Therefore, the gravel layer 12 is exposed from the opening 9.
Since a gap is formed between the crushed stones S of the gravel layer 12, the gravel layer 12 has water permeability. Therefore, the inner surface of the underground seepage type waterway block 1 communicates with the bottom of the groove M through the opening 9 and the gravel layer 12.

A state where the water W flows in the water channel 14 of the underground seepage-type water channel block 1 will be described.
As shown by the arrows in FIGS. 7 and 8, when water W such as rainwater flows into the water channel 14 and passes through the underground seepage water channel block 1, a part of the water W passes through the gravel layer 12 from the opening 9, and the groove It penetrates from the bottom of M to the underground U.
As shown by the arrows in FIG. 7, the width of the water conduit 13 gradually decreases toward the opening 9, so that the water W flows faster through the water conduit 13 and flows over the opening 9. It flows vigorously. Therefore, even if sludge and dust G are contained in the water W, the sludge and dust G are caused to flow downstream together with the water W and therefore do not accumulate in the gravel layer 12.

In addition, even when sludge and dust G accumulate in the gravel layer 12 when the amount of water W flowing through the water channel 14 is small, if the amount of water W flowing through the water channel 14 increases, the flow becomes faster due to the water conduit 13. The sludge and garbage G accumulated by the water W are pushed downstream. Accordingly, sludge and dust G accumulated on the gravel layer 12 can be removed, and the gravel layer 12 can be prevented from being clogged.
Thus, according to the water channel 14 using the underground seepage-type water channel block 1, it is not necessary to perform periodic maintenance for maintaining water permeability for allowing rainwater or the like to permeate underground.

The underground seepage type waterway block 17 according to the second embodiment of the present invention will be described with reference to FIG.
Since the underground seepage type waterway block 17 has the same components as the underground seepage type waterway block 1 according to the first embodiment, the same components as those in the underground seepage type waterway block 1 are denoted by the same reference numerals. Description is omitted.
Reference numeral 19 denotes a bottom portion of the water conduit 13, and the bottom portion 19 is provided at a position higher than the upper surface of the opening 9. The front end 20 of the bottom 19 has an upward slope from the front end of the water conduit 13. An opening-side end 21 of the bottom 19 is provided at a position higher than the upper surface of the opening 9, and a step 23 is formed between the opening 19 and the bottom 9.

A state where the water W flows through the water channel 24 using the underground seepage-type water channel block 17 will be described.
When the water W flows through the water conduit 13, the flow becomes faster and flows vigorously over the opening 9. Since the opening-side end 21 of the bottom 19 is provided at a position higher than the upper surface of the opening 9, the water W flows vigorously at a position higher than the opening 9. Therefore, even if the water W contains sludge or dust G, it does not accumulate in the gravel layer 12.

An underground seepage type waterway block 25 according to a third embodiment of the present invention will be described with reference to FIGS.
Since the underground seepage type waterway block 25 has the same components as the underground seepage type waterway block 1 according to the first embodiment, the same components as those in the underground seepage type waterway block 1 are denoted by the same reference numerals. Description is omitted.
On the lower surface of the bottom wall 7, a reinforcing portion 27 made of a convex portion that protrudes downward along the edge of the opening 9 is formed. Therefore, it is possible to prevent the edge of the opening 9 from cracking, and the strength of the entire bottom wall 7 is further increased.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, the opening formed in the bottom wall is not limited to a square, and may be a circle, for example.
Further, the gravel layer is not limited to crushed stone, but may be composed of concrete pieces, granular ceramics, or the like.
In the first embodiment, the ratio of disposing the underground seepage channel block 1 and the non-permeable channel block 15 is 1: 2, but the present invention is not limited to this, and the amount of water flowing through the channel 14 It can be changed as appropriate in consideration of the amount of water that penetrates underground.

  It has applicability to the manufacturing industry of underground seepage-type waterway blocks and the construction of waterways using underground seepage-type waterway blocks.

DESCRIPTION OF SYMBOLS 1 ... Underground penetration type waterway block 3 ... Waterway block main body 5 ... Side wall 7 ... Bottom wall 8 ... Bottom wall 10 ... Side wall 9 ... Opening 11 ... Rising part 12 ... Gravel layer 13 ... Conveyance channel 14, 24 ... Water channel 15 ... Non-water-permeable Type waterway block 17 ... Underground permeation type waterway block 19 ... Bottom 20 ... Front end 21 ... Open side end 23 ... Step 25 ... Underground permeation type waterway block 27 ... Reinforcement part M ... Groove S ... Crushed stone C ... Waste concrete W ... Water G ... sludge and garbage U ... underground

Claims (4)

In the underground seepage-type water channel block having both side walls and a bottom wall, an opening formed in the bottom wall, and a water guide channel formed by a rising portion rising from the bottom wall and gradually decreasing in width toward the opening. An underground seepage-type waterway block characterized by comprising an opening side end of the bottom of the water conduit at a position higher than the upper surface of the opening . 2. The underground seepage-type canal block according to claim 1, wherein a reinforcing portion that protrudes downward along the edge of the opening is formed on the lower surface of the bottom wall . 3. A water channel comprising the underground seepage type water channel block according to claim 1 or 2 provided in a groove formed by digging the ground, and a gravel layer having water permeability is formed by placing gravel on the bottom of the groove. And the underground penetration type waterway block is installed in the gravel layer . 4. The water channel according to claim 3, wherein a non-permeable water channel block having both side walls and a bottom wall and having no water permeability is connected to the underground seepage type water channel block .

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