JPH033660Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is based on the idea that snow accumulated on roads, etc. is thrown into a waterway, and the water flow of the waterway causes the thrown snow to flow down.
The present invention also relates to a snow flume that melts snow by efficiently utilizing the small amount of thermal energy possessed by flowing water.

[Conventional technology]

Conventionally, there have been various types of snow drifting or snow melting channels as shown below.

(1) As shown in Fig. 7, a water pump (not shown) of a water pumping device introduces running water from a river into a side gutter (water guide gutter) 1, and the gutter 1 is provided with a stage 2 on which the flowing water falls; The snow thrown into the side gutter 1 is crushed and melted by the rapid water pressure of the water falling from the step 2, and is then flowed downstream (see Japanese Patent Publication No. 59-228844).

(2) As shown in Figures 8 and 9, by installing frames 2 below both sides of the side gutter 1, either integrally with the side gutter 1 or separately, the stepped portion 3 can be formed along the longitudinal direction. Form. A perforated plate (snow removal plate) 5 having through-holes 4 for water passage is installed in this step 3, and a water passage gap 6 is formed below the perforated plate 5. Moreover, between the adjacent perforated plates 5, 5, there is a dam plate 7 that dams the water channel of the side gutter 1 and the water flow gap 6.
8 is a handle (Yamagata Shimbun published December 5, 1980, Jikko 60).
(Refer to Publication No.-19192 and Publication No. 19193 of Showa 60).

Therefore, when the water flowing down in the side gutter 1 is dammed by the dam plate 7, the water level rises and is stored. When the stored water rises up in the dam, the dam plate 7
overflows above and flows downstream. Further, when snow is thrown into the stored water dammed by the dam plate 7, the calorie content of this water decreases, and the water passes through the through holes 4 of the perforated plate 5 and falls into the water passage gap 6. The water on the perforated plate 5 has a slightly higher temperature than this falling water, so convection occurs, and the water in the water passage gap 6 passes through the through holes 4 of the perforated plate 5 and rises, coming into contact with the snow. Melt it. When the snow melts due to such water circulation, the dam plate 7 is pulled up and allowed to flow down.

(3) As shown in Figure 10, from the center of the bottom part 2 of the underground culvert (sewage channel) 1, install a bulkhead 4 with a height that does not touch the top part 3 in the longitudinal direction of the culvert 1. A culvert 1 is formed by the partition wall 4 along the
The interior is divided into a first water channel 5 and a second water channel 6.
In addition, holes (manholes) 7 into which snow is thrown are installed every 30 to 50 meters on the top surface 3 directly above the first waterway 5. In the winter, water is allowed to flow only through the first waterway 5, and this water flow melts the snow thrown in from the manhole 7 before flowing down (Japan Sewerage Newspaper, November 18, 1985). ).

[Problem that the invention attempts to solve]

However, in the device of the above-mentioned prior art (1) that melts snow by dropping water from the step 2 provided in the middle of the side gutter 1,
Unless the stepped portion 2 is set quite high, there is no snow melting effect, and therefore, it has been impossible to use this technique for small objects such as road gutters.

In addition, the snow melting devices (2) and (3) have a problem in that the snow melts only with the running water in the gutter 1 or the culvert 1, and is therefore ineffective.

[Means for solving problems]

The purpose of this invention is to provide a snow flume that solves the conventional drawbacks as described above.
The gist is that a protrusion is provided longitudinally on the inner surface of the upper part of at least one side wall of the U-shaped waterway, and that the upper and lower edges of a partition wall that is erected at a distance from the inner surface of the side wall are provided. A main channel and a bypass channel are formed by the partition wall, which are fixed to the protrusion and the bottom wall, respectively, and the partition wall has a plurality of water holes that communicate the main channel and the bypass channel. It is located in the drifting snow channel that was formed.

〔Example〕

Hereinafter, the present invention will be explained in detail based on the embodiments shown in the drawings. In addition, Fig. 1 is a perspective view showing a part of the snow channel according to the present invention, Fig. 2 is a cross-sectional view of the snow channel, and Fig. 3 is a part of the bulkhead used in the snow channel. Fig. 4 A, B, C, D, E and F are front views showing a part of different embodiments showing the shape of the hole in the same partition, and Fig. 5 A, B and C are ，
D, E, F, and G are main part cross-sectional views of different structures showing the mounting state of the partition wall.

In the above drawing, reference numeral 1 denotes a waterway block made of reinforced concrete having a predetermined length, and is formed into a U-shape in cross section with an opening at the top by left and right side walls 2, 2 and a bottom wall 3. Both ends of 4 are closed and connected by cross beams 5, 5 bridging between both side walls 2, 2.

Reference numerals 6 and 6 designate projecting portions formed on the inner surfaces of the upper portions of the side walls 2, 2, extending in the length direction of the water channel block 1, and receiving the lid 8 at the shoulder portion 7 on the upper surface thereof.

Reference numeral 9.9 denotes a partition wall having the same length as the water channel block 1, which stands apart from the inner surfaces of the left and right side walls 2, 2 along the longitudinal direction, and has both upper and lower end edges 9a, 9.
b are fixed to the protruding portion 6 and the upper surface of the bottom wall 3, respectively, so that a main water channel 10 is formed between the left and right partition walls 9, 9, and the side walls 2, 2 and the partition walls 9, 9 A bypass waterway 11 is formed between the two. Here, stainless steel plates or synthetic resin plates are used for the partition walls 9, 9 because of their smooth surfaces, low slip resistance, high corrosion resistance, durability, and strength. Water hole 12
In order to prevent the structural strength from deteriorating due to the drilling of holes, as shown in FIG. A plurality of bulges 13, 13 are formed in parallel at desired intervals.

Reference numeral 12 denotes a large number of water holes drilled in the partition wall 9, through which the main waterway 10 and the bypass waterway 1 are connected.
1 is in communication. Here, the water passage hole 12 used is one in which perfectly circular holes 12a are arranged in a staggered pattern as shown in FIG. 4A. In addition, the elongated hole shape 12b as shown in FIG.
2c, one in which multiple elongated holes 12d are arranged in a feather shape as shown in D in the same figure, and one in the shape of a diamond-shaped hole 12e or a turtleback hole 12f as shown in E and F in the same figure. Select and use the most suitable one according to the environment. Note that the effective opening ratio of the water passage hole 12 with respect to the partition wall 9 is desirably 20% to 70% depending on the snow environment.

Next, how to attach the partition wall 9 will be explained with reference to the embodiments A, B, C, D, H, H, and G in FIG.

(1) As shown in FIG. , 15, both upper and lower edges 9 of the partition walls 9, 9
After fitting a and 9b, fix them with a filler or the like.

(2) As shown in FIG.
The upper end edge 9a of the partition wall 9 is fixed by bolts 17, and the lower end edge 9b of the partition wall 9 is fitted into the groove 15 formed in the bottom wall 3 and fixed.

(3) As shown in FIG.
6, the upper edge 9a and lower edge 9b of the partition walls 9, 9 are fixed by bolts 17, respectively.

(4) As shown in FIG. 5D, the upper edge 9a of the partition wall 9 is fixed by bolts 17 to the nuts 16 embedded in the protrusions 6, 6 of the waterway block 1, and the lower edge 9b is fixed. is inserted into the groove 15 formed in the bottom wall 3 via the U-shaped fixture 18 and fixed.

(5) As shown in Fig. 5 E, the upper edge 9 of the partition wall 9
a is spot welded to a stainless steel plate 19 which has been previously buried in the side end surface of the protruding part 6 of the water channel block 1, and the lower end edge 9b is inserted and fixed into the groove 15 provided in the bottom wall 3.

(6) As shown in Fig. 5, the upper edge 9 of the partition wall 9
A is spot welded to the stainless steel plate 19 buried in the protrusion 6 of the water channel block 1, and the lower edge 9b is
Fasten with bolt 17.

(7) As shown in Fig. 5, the upper edge 9 of the partition wall 9
A is spot welded to the stainless steel plate 19 buried in the protrusion 6 of the water channel block 1, and the lower edge 9b is
is inserted and fixed into a groove 15 formed in the bottom wall 3 via a U-shaped fixture 18.

In the figure, reference numeral 20 denotes a connecting fitting for the water channel blocks 1, which protrudes from the left and right side walls 2, 2 of the connecting end, and a plurality of water channel blocks 1 are held in place by the connecting fitting 20 and bolts/nuts 21. Connect only the length. At this time, the grooves formed in the upper half of the connecting part of each water channel block 1 are filled with joint mortar 22, and the lower half is interposed with packing 23 such as butyl rubber to prevent water leakage. It has been done.

[Effect of the embodiment]

Next, regarding the operation of the above embodiment,
This will be explained with reference to (b) and (c). In addition, in the following, there are two left and right bypass passages 11, 1 in the waterway block 1.
Although the case where one bypass passage is formed will be explained as an example, the effect is the same even when there is one bypass passage.

During normal times, water A in the water channel 1 flows down through the main water channel 10 and the bypass passage 11.

During the winter, the amount of flowing water A is smaller than in normal times. Therefore, the water flows down through the main waterway 10 and the bypass waterway 11 at a low water level.

In such a situation, if snow B accumulated on the road etc. is thrown into the main waterway 10 from the opening 4, if the amount of snow B thrown in is small, it will be absorbed by the flowing water A in the main waterway 10. flowed down. In particular, when the partition wall 9 is made of a stainless steel plate or a synthetic resin plate with a small coefficient of friction, the snow B easily flows down with the water flow A without resistance.

Then, a large amount of snow B is thrown into the main waterway 10,
When a part of the main waterway 10 is blocked by snow B and water A in the main waterway 10 is stored, this stored water A passes through the water passage hole 12 and flows into the bypass waterway 11,
Since the water flows down within the bypass waterway 11, there is no possibility that the water will drain to the outside from the upper end of the side wall 2 of the waterway 1.

At the same time, the water level in the bypass waterway 11 rises by the amount that flows from the main waterway 10 through the water passage hole 12 into the bypass waterway 11, and becomes higher than the water level in the main waterway 10. The water A in the bypass waterway 11 is injected into the snow B in the main waterway 10 through the water passage hole 12 due to its water pressure (shower effect).

Moreover, since the water A in the bypass waterway 11 does not come into direct contact with the snow B, the water temperature is somewhat higher than that of the water A in the main waterway 10. The surface of the snow B is rapidly melted by the water jetted to the surface of the snow B, and the water jetted is placed between the partition wall 9 and the surface of the snow B so as to reduce the sliding resistance between the two. As a result, snow B smoothly and rapidly flows downward while being separated.

Note that if the inner surface of the water channel 1 is coated with urethane resin or fluorine resin paint, the above effect will be further enhanced since the water channel 1 will have a flow rate approximately twice that of an unpainted water channel. This is because concrete walls are hydrophilic, allowing water to easily penetrate and snow to adhere to them, whereas painted surfaces are waterproof, making it difficult for snow to adhere to them, and reducing the coefficient of friction between the wall and snow. There is probably a reason.

[Effect of idea]

As described above, the present invention includes a protruding portion extending longitudinally from the inner surface of the upper part of at least one side wall of a U-shaped waterway, and a partition wall erected at a distance from the inner surface of the side wall. The upper and lower edges of the partition wall are respectively fixed to the protruding portion and the upper surface of the bottom wall to form a main water channel and a bypass water channel, respectively, and the partition wall has a plurality of holes that communicate with the main water channel and the bypass water channel. Since it is constructed with water holes, even if a large amount of snow is thrown into the main waterway and a part of the main waterway is dammed up by snow, this stored water A will not pass through the water holes. Since the water flows into the bypass waterway and flows down the bypass waterway, water does not leak outside from the upper end of the side wall of the waterway.

In addition, even in the winter when the amount of water flowing is low, the main waterway is dammed up by the snow thrown in, and the water in the main waterway flows into the bypass waterway, causing the water level in the bypass waterway to rise. The return water gushes out like a shower and rapidly melts the snow B, making the snow melting efficiency extremely high.At the same time, this return water flowing from the water hole into the main waterway flows between the bulkhead and the snow surface. Since it acts to reduce the sliding resistance in the snow, the snow flows smoothly downward.
The drifting snow effect is remarkable, as is the chain effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the snow channel according to the present invention, Fig. 2 is a cross-sectional view of the snow channel, and Fig. 3 shows a part of the bulkhead used in the snow channel. Perspective views, A, B, C, D, H, and F in Figure 4 are front views showing parts of different partition walls, and A, B, H, D, H, H, and T in Figure 5 are front views showing parts of different partition walls. are sectional views of main parts of different structures showing the installation state of the bulkhead;
B and C are explanatory diagrams showing the operating state of the snow flume mentioned above;
Fig. 7 is a cross-sectional view of a conventional snow channel, Fig. 8 is a plan view of another conventional snow channel, Fig. 9 is a cross-sectional view taken along the line - - of Fig. 8, and Fig. 10 is another conventional snow channel. It is a longitudinal cross-sectional view of an example of a snow channel. 1... Waterway block, 2
... Side wall, 3 ... Bottom wall, 4 ... Opening, 5 ... Cross beam, 6 ... Projection, 7 ... Shoulder, 8 ... Lid, 9 ...
...Partition wall, 10... Main waterway, 11... Bypass waterway, 12... Water hole, 13... Rib, 14, 15
...Groove, 16...Nut, 17...Bolt, 18
...Fixing metal fittings, 19...Stainless steel plate, 20...
Connecting fittings, 21... Bolts and nuts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A protrusion is provided along the longitudinal direction on the inner surface of the upper part of at least one side wall of the U-shaped waterway, and is erected at a distance from the inner surface of the side wall. The upper and lower edges of the partition wall are fixed to the protrusion and the upper surface of the bottom wall, respectively, and the partition wall forms a main water channel and a bypass water channel, respectively, and the partition wall has a plurality of pipes that communicate with the main water channel and the bypass water channel. A snow channel characterized by the formation of individual water holes. (2) The snow flume as set forth in claim 1 of the utility model registration claim, wherein the partition wall is a stainless steel plate. (3) The snow flume according to claim 1 of the utility model registration claim, wherein the partition wall is a synthetic resin plate. (4) The snow flume according to claim 1, 2, or 3 of the utility model registration claim, wherein the water passage hole is a round hole, a long hole, or a square hole. (5) The snow flume according to claim 1, 2, or 4 of the utility model registration claim, wherein the partition wall is fixed by groove fitting, bolting, or spot welding.