JPH0735587U - Water-penetrating H-shaped groove - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a ditch that allows rainwater, etc. that has flowed in to flow efficiently as before and allows water to penetrate into the ground without retaining it. [Structure] Porous concrete is cast on the bottom surface of an underground trench to be a drainage channel to form a permeable base 20.
The groove body 10 made of ordinary concrete or the like and having a substantially H-shaped cross section is attached to the base 20. The upper part of the groove body 10 is used as a main drainage groove A having an opening concave portion, and a lower drainage culvert B is formed by the lower opening portion having a substantially U-shaped cross section and the base 20. Further, the through hole 3 for falling water is provided in the bottom surface corresponding portion 30 of the main drainage groove A.
1 is set.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage groove, and in particular, a drainage groove that allows penetration into the ground without retaining a part of the drainage.

[0002]

[Prior art]

 Rainwater that pours onto the road surface flows into a ditch that is set lower than the road surface, and finally drains to rivers and the sea via sewers. This gutter is formed by burying a reinforced concrete groove in an underground trench dug with an appropriate slope on the roadside according to a pre-planned laying route. As the groove made of reinforced concrete, a so-called U-shaped groove having a U-shaped cross section is well known.

[0003]

[Problems to be solved by the device]

 In recent years, in areas around metropolitan areas where the ground surface is covered with concrete, asphalt, etc., if heavy rain falls, a large amount of rainwater, etc. will flow into the gutters provided on the roadside of the road, and the drainage capacity of the gutters will be exceeded. Roads are flooded, or rainwater run from a sewer to a river via a ditch raises the water level of the river, causing flooding to the residents around the river. Has been taken up. In addition to the fact that the ground surface is covered with concrete, asphalt, etc., the U-shaped grooves made of reinforced concrete that form the gutters have traditionally focused only on the drainage function. Is said to be unable to penetrate into the ground.

Further, it has been pointed out that, while rainwater or the like cannot penetrate into the ground, if groundwater or the like is continuously pumped, groundwater level decreases and ground subsidence occurs. Furthermore, it is pointed out from the global environmental point of view that it is necessary to actively use rainwater and the like for conservation of vegetation and green areas. On the other hand, in view of such a problem, by perforating the bottom surface of the gutter body, rainwater, etc. introduced to the gutter body is dropped into a tank under the gutter body, and water is accumulated in this tank and the accumulated water is collected. Japanese Patent Application No. Hei 5-73086 discloses a gutter which is composed of a separate upper and lower body which can be penetrated into the ground.

However, when water stays in the gutter due to various factors such as poor construction accuracy of the gutter, there is often a sanitary / environmental problem that leads to the generation of mosquitoes, flies and the like. , It is also necessary to return water to the ground and improve slippery so that water does not collect around the gutter including the gutter itself. Under such circumstances, related departments have strongly demanded the development of a gutter which can effectively solve the above problems and which is comparable to the conventional product in terms of production cost and construction cost.

Therefore, in view of the above problems, the present invention provides a ditch capable of efficiently inflowing rainwater or the like that has flowed in as before and allowing water to permeate into the ground without being retained. Has an aim.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is a reinforced concrete drainage groove laid in a subterranean trench that serves as a drainage channel, and has a water-permeable base provided at the bottom of the subterranean trench. And a groove body having a substantially H-shaped cross-section that can be installed on the base, and the upper part of the groove body is the main drain groove of the opening recess, and the lower part of the groove body is the lower opening recess. It was a subdrain for sub-drainage formed with the base, and a through hole for dropping water into the underdrain was provided in a portion corresponding to the bottom surface of the main drain. Furthermore, the base was made of porous concrete.

[0008]

[Action]

 In the present invention, since the groove main body having a substantially H-shaped cross section is installed on the water-permeable base provided at the bottom of the underground groove, and the upper part is formed as the main drainage groove with the opening recess facing upward, the rainwater By flowing into these drains, etc., they are led to the sewer. On the other hand, since the lower part of the groove main body is formed in the underdrain by fitting the opening concave part of the lower part of the groove main body having a substantially H-shaped cross section to the permeable base, it was provided in the portion corresponding to the bottom surface of the main drainage groove. A part of drainage falls into the underdrain from the through hole for falling water, and the dropped water can permeate into the ground through its base.

Further, since the fallen water permeates into the ground as described above, and at the same time, the part that does not permeate flows through the underdrain and is drained, so that the fallen water does not stay. In addition, by making the above-mentioned foundation that is in direct contact with the ground with porous concrete, it is possible to allow water to stay in the holes rather than allowing water to penetrate through the holes locally provided in the non-permeable member to penetrate water into the ground. Without it, water can be passed almost uniformly over a wide area.

[0010]

【Example】

 An embodiment of the present invention will be described with reference to FIG. The drainage H-shaped groove main body 10 of the present invention is made of ordinary concrete or the like with reinforcing bars in a substantially H-shaped cross section, and the substantially H-shaped end face portion 10a is formed flat. Therefore, when the long drainage channel is formed by connecting the end surface portions 10a to the left and right, the joint portions of the connecting portions can be evenly joined. The dimensions of the groove main body 10 can be freely set like the base 20 described below, but by adopting the dimensions that match the standard of the conventional U-shaped groove, it is used for the underground groove for the groove formed by the conventional standard. You may be allowed to do so.

The groove body 10 having a substantially H-shaped section has a base 20 provided in advance at the bottom of an underground groove, which will be described later, so that two opening concave portions having a substantially U-shaped section of the groove body 10 are oriented vertically. In addition, an opening concave portion having a substantially U-shaped cross section at the bottom of the groove main body 10 is attached so as to lie on the base 20. By mounting in this manner, a main drainage groove A 1 having an opening concave portion having a substantially U-shaped section facing upward is formed in an upper portion of the groove body 10 having a substantially H-shaped section. On the other hand, in the lower part of the groove body 10 having a substantially H-shaped cross section, the base 20 and the opening concave portion having a substantially U-shaped cross section form an underdrain B having a substantially B-shaped cross section.

The bottom surface corresponding portion 30 of the main drainage groove A is provided below the groove main body 10 and increases the volume of the main drainage groove A formed on the upper part of the groove main body 10 to secure a sufficient drainage capacity. Is able to. The side wall portion 12 below the bottom surface corresponding portion 30 is formed to be thicker than the side wall portion 13 above the bottom surface corresponding portion 30, and the bottom surface of the side wall 12 is formed flat in the longitudinal direction of the groove body 10. It can be stably placed on the base 20, which will be described later, without opening a gap.

The bottom-corresponding portion 30 is formed as flat as possible so that a small amount of drainage does not stay, and one circular through hole 31 is provided in the center so that a part of the drainage falls on the base 20. Has been. In this embodiment, one circular through hole 31 is provided, but the shape and number of the through holes 31 may be changed appropriately. Further, the periphery of the through hole 31 may be slightly inclined toward the through hole 31 so that even a small amount of drainage can easily flow down to the underdrain B without staying on the drainage surface.

On the other hand, the base 20 is formed by placing porous concrete directly on the bottom surface of the underground trench at the site. Further, the base 20 is connected to the groove main body 10 having the above-mentioned configuration with a certain inclination so that drainage can easily flow, and the level of the upper surface is adjusted in advance so that it can be firmly installed, and the base 20 is formed flat. Has been done. Further, the level adjustment for the gradient or the like may be performed by using mortar or the like between the base 20 and the side wall portion 12 of the H-shaped groove main body 10.

Further, in the above configuration, the base 20 and the groove main body 10 were separately configured, but previously, the standard porous concrete base 20 was manufactured in the same factory as the groove main body 10 in a factory or the like. Alternatively, the base 20 and the groove main body 10 may be integrally formed in advance so as to avoid direct driving on site.

[0016]

[Effect of device]

 In the H-shaped groove of the present invention, the drainage flows through the main drainage groove formed in the upper part of the substantially H-shaped cross section in the same manner as the conventional side groove, and a part of it flows from the through hole on the bottom surface to the lower part of the H-shaped groove. It falls into a culvert formed by a mouth recess and a permeable base, and while flowing through the culvert, penetrates into the ground through a permeable base forming the bottom of the culvert. Therefore, in the present invention, it is possible to naturally infiltrate water into the ground without retaining water, thus eliminating the problem of environmental hygiene that mosquitoes, flies, etc. are generated due to retention of drainage as in the past. In addition, it is possible to effectively return water to the ground. In addition, the H-shaped ditch of the present invention can effectively return almost all of the drainage that has been flowing directly to rivers, etc., into the ground, so that there is the risk of flooding in the area around the river during heavy rain, Subsidence due to groundwater uptake can be reduced, and at the same time, the necessary amount of water retention in the ground can be secured, which can contribute to the conservation of plants and the like in the area.

[Brief description of drawings]

FIG. 1 is a perspective view (a) and a plan view (b) of an H-shaped groove of the present invention.
FIG. 4C is a cross-sectional view of FIG.

[Explanation of symbols]

 10 Groove main body 20 Base 30 Bottom equivalent part 31 Through hole A Main drainage groove B Underdrain

Claims (2)

[Scope of utility model registration request] 1. In a reinforced concrete groove for drainage laid in a subterranean groove that serves as a drainage channel, a water-permeable base provided at the bottom of the subterranean groove and an approximately H-shaped cross section that can be installed on the base. At least consisting of the groove body of the mold,
The upper part of the groove main body is the main drain groove of the opening recess, and the lower part of the groove main body is the underdrain for drainage formed by the lower opening recess and the base, and the bottom surface of the main drain groove. A water-penetrating H-shaped groove having a through hole for dropping water into the underdrain in a substantial portion. 2. The water-penetrating H-shaped groove according to claim 1, wherein the base is a porous concrete base.