JPH053583Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to sewage and road drainage ditches, and more particularly to a drainage ditch having a sloped bottom surface suitable for sweeping away deposits such as earth and sand downstream.

(Prior art) Conventionally, sewer and road drainage ditches with sloping bottoms do not have a constant flow of water, and when there is flow only during rain, or even when there is constant running water, sediment, etc. accumulates at the bottom of the ditch, and heavy rains occur. When water levels rise due to natural disasters such as this, water overflows and becomes useless as a drainage ditch, or deposits can cause problems such as foul odors. To deal with this, the deposits were only removed by periodic or irregular cleaning of the ditches, and no means were provided to allow the accumulated earth and sand to flow downstream by natural forces.

(Problem to be solved by the invention) The present invention has been devised in view of the above-mentioned viewpoints, and has a particularly simple structure that allows sediments such as earth and sand that occur on a sloped bottom surface to be flushed downstream with running water. Intended to provide drainage ditches.

(Means for Solving the Problem) That is, the present invention provides a slope for forming an inclined bottom surface in which the upper surface of the bottom surface of a drainage premises is a sloped surface in the length direction, and a water barrier plate protruding from the sloped surface is provided. The present invention provides a drainage ditch characterized by having panels arranged therein.

Next, an example of an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral A indicates a drainage ditch according to the present invention. Drainage ditch A consists of a ditch body 1 and a cover body 5,
The groove body 1 is formed from side walls 2, 2 and a bottom part 3,
The inner surface of the groove of the bottom part 3 is inclined in the water flow direction of the groove A (indicated by the arrow), and a water barrier plate 4,
4 is placed. The bottom portion 3 of the groove is composed of, for example, a sloped panel 11 for forming a sloped bottom surface (hereinafter abbreviated as sloped panel). The slope panel 11 has leg portions 11a and a groove bottom portion 11 whose upper surface in cross section is horizontal.
A cutout step 11c is cut around the upper surface of the groove bottom, and a cutout 11d is cut in the center of the lower side of the leg 11a. As described above, the sloped panel 11 has a desk shape with an inverted U-shape in cross section, consisting of legs 11a and groove bottoms 11b, but the legs are long so that the groove bottoms are inclined with respect to the horizontal plane in the longitudinal direction. The front and rear sides have different heights in the side direction. The slope of the groove bottom forming portion obtained by the different heights allows water such as rainwater to smoothly flow down into the groove. The groove bottom upper surface of the slope panel can be horizontal, convex, concave, mountain-shaped, etc. when viewed in cross section, and may have longitudinal grooves on the upper surface. Further, it is preferable that the slope panel be formed of cement concrete or the like, as in the case of the U-shaped groove body, but the invention is not necessarily limited to this.

In addition, when the U-shaped groove A for slope is arranged to cross a road having a slope, for example, the side walls of the U-shaped groove main body should have an appropriate difference in height and strength between the valley side and the mountain side. Preferably, the body 8 is also a U-shaped groove having a structure capable of withstanding the load when a vehicle or the like passes by. An example of a slope U-shaped groove main body having such a structure is the slope U-shaped groove described in Japanese Utility Model Application Laid-Open No. 170601/1982, but the present invention is not necessarily limited thereto. Water barrier plate 4,
4 is arranged so that its length direction is perpendicular to the water flow direction (indicated by the arrow) of the drain A. The length of the water barrier plates 4, 4 is about 1/2 of the groove width, and they extend alternately from the inner surfaces 2a, 2b of the side wall 2 of the groove A at appropriate intervals to near the width center line of the groove A. There is.
In addition, the water barrier plates 4, 4 have protruding surfaces that act as a barrier against water flow and are approximately perpendicular to the surface of the groove bottom 3, and the back surfaces thereof are formed with an inclined surface. The height of the water barrier plate is not particularly limited, and can be appropriately selected depending on the location where the groove A is installed, the water flow conditions, and the like. Furthermore, the shape, arrangement interval, etc. of the flowing water barrier plate are not necessarily limited to the above. For example, a drain structure as shown in FIG. 2 can be used. That is, in the drain A' in FIG. 2, the groove main body 6 has side walls 7,
7 and a bottom part 8, but the surface 8a of the bottom part 8
The cross section has a mountain-shaped shape that becomes higher at the center of the groove width, and the water barrier plates 9, 9 are also arranged with a downward slope from the center of the groove width toward the side walls 7, 7. This drainage ditch A' does not have a constant flow of water, so if everyday dirt gets in, it should be deposited on both sides of the ditch (see 1 in the figure).
0 indicates deposits), it is suitable for drains where the deposits are flushed out when there is water flow.

Since drainage ditch A is configured as described above,
When using it, as in the case of a normal drainage ditch, the place where the ditch will be installed is dug up to form a foundation, the drainage ditch main body 1 is placed on this foundation, and both side walls of the ditch are installed. After filling the outside of 2 and 2 with earth and sand, cover the lid 5.
All you have to do is block it.

(Functions and effects of the invention) As in the above structure, the drainage ditch according to the invention has a protruding water barrier plate at its bottom, so it can absorb the natural force of water flow, that is, the water flow that occurs when a ship runs on water. It has the effect of using the movement of water to push sediment such as earth and sand downstream. To explain this effect using FIG. 3, the water (arrow) flowing along the bottom surface 32 of the groove hits the water flow barrier plate 31 at an almost right angle, causing turbulent flow such as reverse flow, lateral flow, and pursuit flow. This has the effect of kicking up or stirring up sediment (not shown) and flushing it downstream. In this way, in the drainage ditch of the present invention, sediments such as earth and sand can be successively flushed downstream using the natural force of running water, so water always flows smoothly and there is no overflow due to sediment raising the bottom of the ditch. This also prevents the occurrence of foul odors due to deposits, and eliminates the need for maintenance work such as cleaning ditches. This effect is also exhibited in drainage ditches where there is no constant water flow, but where untimely water flows due to rainfall, etc., and the soil and sand that accumulates on a daily basis is flushed out and cleaned naturally.

[Brief explanation of the drawing]

Figure 1 A, B, C, and D are respectively a front view and an internal side view of the drainage ditch according to the present invention from the upstream direction of the flow;
FIG. 2 is a front view of another embodiment of the drainage ditch of the present invention, and FIG. 3 is an explanatory view of the function of the water barrier plate. Explanation of symbols: A, A'...Drainage ditch, 1...Drainage ditch body, 2...Side wall, 3...Bottom, 4...Water barrier plate.

Claims (1)

[Scope of utility model registration request] A drainage ditch characterized in that a sloped panel for forming a sloped bottom face is disposed on the bottom face of the drainage ditch, the upper face of which is a sloped face in the length direction, and a water barrier plate protruding from the sloped face is provided.