JPH042183Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a pedestal block for waterways such as irrigation water and drainage with a head.

(Prior Art) Generally, when improving a rice field, a small irrigation canal is constructed to divert water from a large irrigation canal provided along a road and lead it to the rice field.

In this case, there is a head difference between the large canal that flows along the side edge of the road and the small irrigation canal on the rice field side, so a drop groove is provided on the slope.

When the major irrigation channel and the minor irrigation channel are perpendicular to each other, this head ditch is easy to construct because it only slopes vertically along the slope. However, if the road is curved and the major irrigation canal curves along this curve, the minor irrigation canals are constructed in a grid pattern, so on the slope, the head ditch slopes not only vertically but also in plane. Must be constructed.

When constructing such a vertically inclined drop groove, it has conventionally been formed as shown in FIGS. 7 and 8.

A U-shaped groove 1 led from the water intake on the main canal side is supported by a curved pedestal block 2 on the tip side, and furthermore, a pedestal block 3 installed here and on the paddy field side is installed along the slope 4. A drop groove 5 is formed to support the U-shaped groove 1.

Furthermore, an irrigation still water pond 8 is formed by supporting the U-shaped groove 7 with a large inner width using pedestal blocks 3 and 6 provided on the rice field side, and the force of the irrigation water flowing down the head groove 5 is calmed down to form a small irrigation canal. It is designed to lead to 9.

As shown in Fig. 7, the conventional pedestal block 2 has its tip end bent at an angle α, and several types of angles are available. The angle β varies depending on the state of the land, such as when the block is curved along a road, and often does not match the prescribed angle α of the pedestal block 2.

In this case, conventionally, the inner surface 2A of the side wall on the tip side of the pedestal block 2 has been modified by cutting to match the inclination angle β of the drop groove 5, and the current alignment has been carried out, which has had the disadvantage of extremely poor workability.

Furthermore, since the still water pond 8 also combines two pedestal blocks 3 and 6 with a large U-shaped groove 7, construction workability is similarly poor, and there is a large stepped portion 10 on the outlet side of the still water pond 8.
Because of this, when it rains heavily, this step 10
There was a problem where water collided with the building and splashed outside, washing away the surrounding soil.

(Problems to be solved by the invention) The present invention has been devised in view of the above points, and allows the construction of head grooves at any angle of inclination according to the site conditions, greatly improving work efficiency on site. The present invention provides a pedestal block for waterways.

(Means for Solving the Problems) The present invention has a main body having a U-shaped cross section, on the front surface of the bottom of the channel, a flat surface that becomes narrower toward the tip, and an upper surface that extends downward toward the tip. U inclined to
The main body block has a protruding U-shaped groove receiving part and a bottom plate protruding from the front of the main body at a distance below the U-shaped groove receiving part, and has an L-shaped cross section with the bottom plate facing toward the tip side. It is characterized by consisting of two side wall blocks formed narrow in plane width.

(Function) When constructing a drop groove on a slope, the waterway pedestal block of the present invention supports a U-shaped groove led from the water intake side with the main block, and forms a U-shaped groove arranged at an angle to form a drop groove. The upper end of the groove is supported by the U-shaped groove receiver.

After this, side wall blocks are installed on the bottom plate protruding from the front surface of the main body block so as to sandwich the U-shaped groove from both sides, according to the inclination angle of the bottom plate, and the bottom plate is inserted into the space below the U-shaped groove receiving part. Insert and secure with mortar.

In this way, in the present invention, the pedestal block is formed of three pieces: the main body block and two left and right side wall blocks, and by adjusting the mounting angle of the side wall blocks, it is possible to construct a drop groove at any inclination angle. .

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

Figure 1 shows the main body block 11 and the side wall block 12 for angle adjustment.
The main body part 13 has a U-shaped cross section, and has a trapezoidal shape in which the width narrows toward the tip side (outflow side) on the front surface of the bottom of the water channel of the main body 13, and the upper surface tapers downward toward the tip side. U-shaped groove receiving part 1 in the shape of an inclined truncated square pyramid
4 is provided protrudingly. Further, a flat bottom plate 16 is provided on the front surface of the main body part 13 with a spacer part 15 provided below the U-shaped groove receiving part 14 .

In addition, there are two side wall blocks 12 on the left and right, and the cross section L
The bottom plate 17 has a trapezoidal shape.

Furthermore, as shown in FIGS. 3 and 4, the still water pond block 18 installed on the rice field side has a flat bottom plate 20 protruding from the rear end side (inflow side) of the main body 19, which has a U-shaped cross section. Further, the tip end side (outflow side) of the bottom plate 21 of the main body part 19 rises gently, and coincides with the bottom of the small irrigation waterway 9, and the waterway is narrowed toward the outflow side.

When constructing the pedestal block 2 on the upper side of the slope 4 by combining the main body block 11 and the side wall block 12, first the main body block 1 is constructed as shown in FIG.
1 is installed, and the U-shaped groove 1 led from the water intake side is attached to the main body part 13 having a U-shaped cross section.

Next, a U-shaped groove 1 is installed along the slope 4, and the upper end of the U-shaped groove 1 is supported by a U-shaped groove receiving part 14 protruding from the main body block 11 at an inclination angle β according to the site condition. , the lower end of the paddy field side is supported on the bottom plate 20 of the still water pond block 18.

Next, as shown in FIG. 2, auxiliary blocks 22, 22 are placed on both sides of the bottom plate 16, and side wall blocks 12, 12 are placed on top of these so as to sandwich the U-shaped groove 1 from both sides, and the trapezoidal bottom plate 17 , 17 are inserted into the gap 15 between the U-shaped groove receiving part 14 and the bottom plate 16, the angle is adjusted to β, and the gap is filled with mortar and fixed.

Further, the lower end side of the U-shaped groove 1 supported by the bottom plate 20 of the still water pond block 18 is sandwiched by adjusting the angle of the side wall blocks 12, 12 from both sides as shown in Fig. 3, and similarly fixed with mortar. .

Therefore, the pedestal block 2 constructed in this way
The head groove 5
The pedestal block 2 can be easily constructed in accordance with the inclination angle β.

Furthermore, the still water pond block 18 is also integrally constructed, and construction is easy, and the angle of the lower end support portion of the U-shaped groove 1 can be easily adjusted.

In addition, the bottom plate 21 on the outflow side rises gently, there is no step, and the waterway is narrowed, so the small irrigation waterway 9
It flows smoothly to the sides, and even during heavy rain, it prevents the surrounding soil from being washed away due to water splashing.

Fig. 5 shows another embodiment of the present invention, in which the planar shape of the U-shaped groove receiving part 14 protruding from the main body block 11 is formed into a half-ellipse shape, and Fig. 6 shows a side wall block. The planar shape of the bottom plate 17 of 12 is formed into a half-ellipse shape to facilitate angle adjustment.

In addition, although the above-mentioned example showed the example in the case of constructing the head groove of irrigation water, it can be similarly applied to the head groove of the drainage side.

In addition, an auxiliary block 22 installed next to the bottom plate 16
may be used as necessary.

(Effect of the invention) As explained above, according to the waterway pedestal block according to the invention, the main body block and the side wall block are combined, and the combined part is formed narrow at the tip side so that the inclination can be adjusted as desired. Because of this, the head ditch can be constructed at any inclination that suits the site conditions, providing excellent workability and significantly reducing construction costs.

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention. Figure 1 is an exploded perspective view of the pedestal block, Figure 2 is a perspective view of the pedestal block, and Figure 3 is a water supply system. FIG. 4 is a side view of FIG. 3, FIG. 5 is a plan view of a main body block according to another embodiment,
6 is a plan view of the side wall block, FIG. 7 is a plan view showing a conventional water head groove, and FIG. 8 is a side view of FIG. 7. 1, 7... U-shaped groove, 2... pedestal block, 4...
... Slope, 5 ... Drop groove, 11 ... Main body block,
13...Main body part, 14...U-shaped groove receiving part, 12...
Side wall block, 16, 17...bottom plate, 18...still water pond block.

Claims (1)

[Scope of utility model registration request] A U-shaped groove receiving part is protruded from the front surface of the bottom of the water channel of the main body having a U-shaped cross section, and the flat surface becomes narrower toward the distal end, and the upper surface slopes downward toward the distal end. , a main body block with a bottom plate protruding from the front of the main body at an interval below this U-shaped groove receiving part, and two blocks each having an L-shaped cross section and a bottom plate that becomes narrower in plane width toward the tip side. and a side wall block, and the right and left side wall blocks are adjusted to an arbitrary angle and placed on the bottom plate of the main block so as to sandwich the U-shaped groove receiving part from both sides.