JP2513167Y2 - Head drop - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is characterized in that, for example, blocks having a higher height are arranged as they go upstream so as to reduce the flow velocity and prevent the river from being lowered due to excavation. It is related to engineering.

[0002]

2. Description of the Related Art A conventional head drop structure is made of concrete or the like in the shape of a weir, and is configured to reduce the flow velocity to prevent a decrease due to excavation of a river bed, and has a relatively high height.

[0003]

[Problems to be Solved by the Invention] With the above-mentioned structure, the height of the head drop becomes 1 to 2 m, and when it becomes higher, it becomes difficult for the fish to go up, and the gray of concrete gives a dark image. However, the surface was relatively smooth, there was no place where fish could be hidden, and the tapped part of the outlet had to be constructed of a fairly thick concrete.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention has been proposed in order to eliminate the above-mentioned inconvenience, and its construction is such that several pseudo rocks of various sizes are integrally formed on the upper surface,
In the pseudo-rock part, a large number of blocks 1 having large or small diameters or concave holes are arranged in a row or a plurality of rows with their side faces abutted, and a large number of blocks 1 having a high height are arranged in a row toward the upper stage Alternatively, it is constructed by sequentially arranging several sequences.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the embodiments will be described with reference to the drawings. 1
Is a block, has a convex shape when viewed from the top, and is available in several heights. Several pseudo stone parts 2 of various sizes are formed on the upper surface. Reference numeral 3 is a through hole or a concave hole provided in the pseudo rock portion 2. The holes are formed so as not to be parallel to the water flow direction. Reference numeral 4 is a connecting hole provided in the center of the block 1 in the front-rear direction. Reference numeral 5 denotes a connecting hole provided in the front-rear direction of the block 1, one on each side. 6 is a connecting bolt. In the present invention, the ends of a large number of blocks 1 are abutted against each other to form one row or several rows, and the higher blocks 1 having higher heights are arranged to form one row or several rows in sequence. .

[0006]

Since the present invention has the above-described structure, in the construction, the end portions of the blocks 1 are abutted against each other and arranged in parallel, and the second row is arranged in the front-rear direction opposite to the first row. The blocks 1 in the second row are arranged so that there is a seam at the end of the blocks 1 in the second row, and similarly, they are arranged in one row or several rows in accordance with the scale of the river. Then, a plurality of blocks 1 each having a high height are sequentially arranged in one row or several rows as they go to the upper stage. At this time, the connecting holes 4 and 5 are communicated with each other, the connecting bolt 6 is inserted into the holes 4 and 5, and the nuts are tightened.

[0007]

[Effects of the Invention] In the present invention, since the pseudo-rock part 2 has its head projected irregularly on the water surface during normal water, it creates a landscape like a natural mountain stream, and the gaps between the large and small pseudo-rock parts face in various directions. As a result, it directs water in various directions. Therefore, this turbulent flow creates an environment in which fish can live very easily. The upstream area is gradually increased by using blocks of different heights in combination, and it does not suddenly reach a height of 1 to 2 meters unlike the conventional head construction, so fish can easily run up and the riverbed slope can be increased. It reduces the flow velocity to prevent the decrease due to excavation of the riverbed. Further, since the through holes and the recessed holes 3 provided in the pseudo rock portion 2 are close to a right angle to the water flow, the inside of the through holes and the recessed holes 3 becomes a static water area, which is a place where aquatic insects can easily live. Since the water flow is also gentle on the back side of the pseudo-rock part 2 opposite to the water-balance part, it serves as a habitat for aquatic organisms and an evacuation site, which is effective for fish breeding.

[Brief description of drawings]

FIG. 1 is a perspective view of a block used in the present invention,

FIG. 2 is a front view thereof,

FIG. 3 is a plan view thereof,

FIG. 4 is a side view thereof,

FIG. 5 is a plan view of a head drop device of the present invention,

FIG. 6 is a side view of FIG. 5;

[Explanation of symbols]

 1 block 2 pseudo rock part 3 through hole, concave hole 4 central connecting hole 5 connecting holes on both sides 6 connecting bolt

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of pseudo rocks 2 of various sizes are integrally formed on the upper surface, and the pseudo rocks 2 are provided with through-holes or recesses 3 having various diameters of large and small, and a large number of blocks 1 are butted against each other. A drop machine characterized by arranging one or several rows, and arranging a large number of blocks having higher heights one by one or several rows sequentially toward the upper stage.