JPH0686742B2 - Underground reduction structure of snowmelt water on snow-melting road - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a snow-melting road for immediately returning the snow-melting water on the surface of the snow-melting road to the ground on the spot to prevent a decrease in groundwater level and ground subsidence. It is related to the underground return structure of the snowmelt water.

[Problems to be Solved by Prior Art and Invention]

Currently, groundwater is used for melting snow on roads, sidewalks, parking lots, etc., and a large amount of groundwater is pumped up and sprinkled or discharged.

In this case, if there is a lot of snowfall, a large amount of groundwater will be pumped up all at once, so the groundwater level will drop, and eventually ground subsidence will occur, which makes the use of large amounts of groundwater a problem.

To solve this problem, the same amount of water as the groundwater used should be returned to the ground, but the snowmelt water is drained to sewers and rivers by drainage gutters that are installed near the road shoulders.
Currently, it is not returned to the underground.

Further, domestic drainage, factory drainage, etc. are mixed into the drainage gutter drainage.

Therefore, it is not preferable to return the dirty dirty wastewater to the underground because of the problem of underground pollution.

The present invention provides an underground return structure for snowmelt water on a snow-melting road that directly returns only clean snowmelt water directly to the underground.

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

In the snow-melting road 1 that melts snow on the road surface by sprinkling groundwater, a drainage groove 3 is provided in parallel with the drainage-side groove 2 on the snow-melting road 1 side of the drainage-side groove 2 formed on the road shoulder. At least the side wall of the water groove portion 3 on the side of the snow-melting road 1 is formed as a water impermeable wall 7, and a water-permeable body 8 that allows snow-melting water to pass through but does not allow dust to pass therethrough.
Similarly, a water-permeable body 4 which is detachably superposed with a water-permeable lid 9 through which snowmelt water permeates but dust does not permeate is embedded in the return water groove portion 3 in the upper part of the Drainage gutter 2
The snowmelt water on the road surface flows into the water-permeable body 4 in the return water groove portion 3 and the dust remaining on the water-permeable lid body 9 is the drainage side groove 2
A snow-melting road characterized by being provided with a water permeation reducing section 5 which is set so as to flow into the interior of the water permeation body 4 and has a water injection vertical hole 10 which is provided under the water permeation body 4 to reduce the snowmelt water to the groundwater layer. It is related to the underground return structure of the snowmelt water.

[Action]

The snowmelt water flowing on the road surface of the snow melting road 1 is not discharged to the drainage ditch 2 provided on the shoulder of the snow melting road 1 as is the case conventionally, but is always discharged immediately before flowing into the drainage ditch 2. Since it will pass over the return water groove portion 3 provided on the side of the snow-melting road 1, the snow-melting water flows into the water-permeable body 4 composed of the water-permeable lid 9 and the water-permeable main body 8 and permeates therethrough. Only the infiltrated clean snowmelt water is left in the trash and is directly returned to the groundwater layer through the water permeation reduction section 5 having the vertical water injection hole 10. At this time, the snow-melting water does not permeate toward the roadbed due to the impermeable wall 7 of the return water groove 3.

Further, the dust remaining on the water permeable lid 9 is guided by the snow melting water and is discharged to the drainage side groove 2 as usual.

Further, in the summer when there is no snowfall, the water permeable lid 9 may be removed, and an ordinary concrete block of the same size may be placed on the water permeable main body 8.

〔Example〕

The drawings show an example of a preferred embodiment of the present invention. In a snow-melting road 1 that melts snow on the road surface by sprinkling groundwater, the drainage gutter 2 formed on the road shoulder is connected to the snow-melting road 1 side. A return water groove portion 3 is provided in parallel with the drainage side groove 2, and at least a side wall of the return water groove portion 3 on the side of the snow-melting road 1 is formed as an impermeable wall 7. A water-permeable body which allows snow-melting water to pass but does not allow dust to pass therethrough. Similarly, a water-permeable body 4 is detachably superposed on the water-permeable cover 9 which is permeable to snowmelt water but impermeable to dust, and is embedded in the return water groove 3 to form a road surface of the snow-melting road 1 and the return water groove 3 And the drainage gutter 2 are located in relation to each other.
It is set so that the dust that flows into the drainage gutter 2 that remains on the water-permeable cover body 9 and remains on the water-permeable cover body 9 has a water injection vertical hole 10 at the bottom of the water-permeable body 4 that reduces snowmelt water to the groundwater layer. The present invention relates to an underground reduction structure for snowmelt water on a snow-melting road, which is provided with an established water-permeable reduction unit 5.

The drawing shows a watering nozzle 13 buried in the road surface.
The figure shows a case where groundwater is sprinkled on the road surface to melt snow on the road surface.

The drainage gutter 2 in the drawing shows a deep drainage gutter 2, but it may be a shallow drainage gutter 2 whose bottom surface is formed into an inclined surface, as long as it is a gutter capable of draining into a sewer pipe or a river as in the conventional case. Any shape is acceptable.

Further, the return water groove portion 3 in the drawing has two impermeable walls 7 having a length reaching a position deeper than the roadbed 6 of the snow-melting road 1 buried at a predetermined interval so that permeated water permeates into the roadbed 6. This shows a case where the roadbed 6 is prevented from being weakened.

The water-permeable body 4 in the drawing is composed of a water-permeable main body 8 and a water-permeable lid 9, and the water-permeable lid 9 is detachably polymerized on the upper part of the water-permeable main body 8. It is formed more densely than the water permeable gap 8 so that most of the dust can be captured by the water permeable lid 9.

If the water-permeable cover 9 is replaced with a water-impermeable cover made of concrete or asphalt during a period when snow melting is not required, underground return of rainwater will be prevented. Can be prevented from being clogged with fine dust.

To clean the water-permeable lid 9, remove it and apply high-pressure water from the back surface to clear the clogging.

It is desirable that the water-permeable main body 8 is formed by using the following, and the water-permeable lid 9 is formed by using the following.

Granular bone made from sand as the main material, finely crushed shells and crushed red soil layer and then baked at high temperature at about 900 ° C and selected to an appropriate particle size Material.

Granular aggregates mixed with sand and crushed stone, and granulated aggregates such as slag mixed with a foaming agent when cement or an adhesive is used to create fine voids that intervene in a confectionery form.

When the above-mentioned granular aggregate is solidified by molding, a gas is always forced into the mold to permeate it so that fine voids are created so that it exists like a confectionery.

The water permeable body 4 may be laid or packed by transporting the water permeable body 4 previously manufactured in a factory to the site and laying it.

Further, the water permeation reducing section 5 in the drawing shows a case where a water permeation foundation portion 14 filled with pebbles is provided below the return water groove portion 3 and a water injection vertical hole 10 is vertically provided in the water permeation foundation portion 14. The water injection vertical hole 10 may be formed by a pipe.

In the figure, reference numeral 11 is a feed water pipe for reversely pressurizing wash water for eliminating clogging, and 12 is a snow-melting pipe.

〔The invention's effect〕

Since the present invention is configured as described above, the snow-melting water on the snow-melting road surface is not drained straight to the drainage ditch provided on the shoulder of the snow-melting road as in the conventional case, but immediately before flowing into the drainage ditch. Therefore, most of the clean snowmelt water permeates the permeable lid and the permeable body leaving the dust on the permeable lid, and directly through the water injection vertical holes in the permeable reduction section. It is returned to the groundwater layer on the spot.

At this time, at least the road surface side of the return water groove portion is formed as a water impermeable wall, so that permeated water is prevented from flowing into the roadbed, and weakening of the roadbed can be prevented.

Further, since the dust on the water permeable lid is guided and removed toward the drainage ditch by the snowmelt water, the deterioration of the snowmelt water penetration function of the water permeable body can be prevented as much as possible.

As described above, the present invention, as well as the groundwater itself, always returns clean snowmelt water to the groundwater layer during snowmelting, thus preventing a decrease in groundwater level and ground subsidence, and not reducing dirty water, which is a problem of groundwater pollution. Will not occur.

[Brief description of drawings]

FIG. 1 is a sectional view of this embodiment. 1 ... Snow-melting road, 2 ... Drainage gutter, 3 ... Return water ditch, 4
…… Permeable body, 5 …… Permeability reduction part, 7 …… Impermeable wall, 8 ・ ・ ・
… Water permeable body, 9 …… Water permeable lid, 10 …… Water injection vertical hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Publication Sho 52-40790 (JP, B2)

Claims (1)

[Claims] 1. In a snow-melting road where snow is melted on the road surface by sprinkling groundwater, a return water groove is provided in parallel with the drain-side groove on the snow-melting road side of the drainage-side groove formed on the road shoulder. At least the side wall of the water trench on the side of the snow-melting road is formed as an impermeable wall, and snow-melting water permeates but refuse does not permeate. Embed a freely polymerized water-permeable body in the return water groove,
As for the positional relationship between the road surface of the snow-melting road, the return water groove portion and the drainage ditch, so that the snowmelt water on the road surface flows into the water permeator in the return water groove portion and the dust remaining on the water permeation lid flows into the drainage groove. The underground return structure for snowmelt water on a snow-melting road is characterized in that a water-permeable reduction section is provided at the bottom of the water-permeable body, and a vertical hole for pouring water to reduce the snowmelt water to the groundwater layer is laid vertically toward the ground.