JP5080620B2 - Intake mechanism of Sabo Dam - Google Patents

Description

The present invention relates to a water intake mechanism of a sabo dam for storing a large amount of sediment on the upstream side during a flood and taking water from a sabo dam protecting the downstream side from a landslide disaster.

The function of the sabo dam is to store a large amount of sediment on the upstream side during floods and protect the downstream side from sediment disasters. At the same time, however, it is one of the important functions of the sabo dam to allow the stored sediment to flow down after the flood and quickly restore the sand storage capacity to prepare for the next flood. Therefore, when planning water intake from a sabo dam, a large amount of earth and sand must pass around the water intake facility.
On the other hand, sabo dams are usually surrounded by mountains, and a large amount of fallen leaves occur in the autumn on the upstream side. Water intake from the Sabo Dam must also take into account the passage of such a large amount of fallen leaves.
In this project, we will provide a method for automatically and continuously taking water in a sabo dam where a large amount of sediment and fallen leaves flow down.

The following prior art is known as the intake mechanism of the sabo dam as described above.
First, in JP 2009-174215 A (see Patent Document 1), in a dam provided in a river, a first water collecting part provided in an overflow section where river water overflows the dam, A second water collection section that is provided at the bottom of the upstream side and draws river water from the filtration layer 9, and a first and a second water collection section from the first water collection section and the second water collection section, respectively. And a water purification treatment unit for treating the supplied water, and when the turbidity of the first intake channel is within the reference value, water is supplied from the first intake channel to the purified water treatment unit, and the turbidity of the first intake channel exceeds the reference value Then, a water intake system and a water intake device that are switched to supply water from the second intake channel to the water purification treatment unit are described.

JP 2000-3319866 A (see Patent Document 2) discloses that in a sabo dam for preventing excessive flow of earth and sand at the time of water increase, the water level reaches a certain range before reaching the top of the dam head. It has a slit through which a large amount of water and earth and sand can flow, and at the lower part of the slope part provided in the slit part, falling objects such as stones, rocks and flowing water are separated, and water from surface water is taken in. A slit sabo dam type mountain stream intake is described in which a bar screen is provided, and water can be taken from the upstream reservoir through the bar screen.

In JP-A-3-293434 (see Patent Document 3), an upstream side of a sabo dam is provided with a water intake pipe in a riverbed gravel layer where a clear stream has been flowing in advance, so that the earth and sand of a sabo dam caused by the erosion of sediments. A water intake facility for a sabo dam is described that has the function of allowing good quality groundwater to be taken permanently and without power even after being buried.

Japanese Utility Model Publication No. 62-50222 (refer to Patent Document 4) discloses a sabo that enables groundwater collected at the bottom of a sabo dam to be supplied as snow treatment water based on the principle of siphon. A vacuum water intake device for dams is described.

JP 2009-174215 A JP 2000-3319866 A JP-A-3-293434 Japanese Utility Model Publication No. 62-50222

However, any sabo dam intake mechanism is simple in structure and easy to maintain, and can easily switch between normal intake and ingestion of intake dredging during clogging due to flooding or earth and sand. I wasn't able to do it.

Therefore, the intake mechanism of the sabo dam according to the present invention is simple in structure and easy to maintain, and can easily switch between intake in normal conditions and lodging of dredging basins when clogging occurs due to flooding or earth and sand. It is intended to provide a water intake mechanism for the Sabo Dam.

That is, the water intake mechanism of the sabo dam according to the present invention is arranged in the normal state by disposing a trapping or deformable intake basin downstream of the water passage of the sabo dam and extending its terminal to the sleeve of the sabo dam. Water can be taken with water intake dredge, and when the water intake clog is clogged due to flooding or earth and sand, the water intake dredging is overturned or deformed to avoid troubles due to flooding or clogging. The water intake basin is returned to its original state and water intake is resumed.

The water intake mechanism of the sabo dam according to the present invention is configured such that the above-described collapsible water intake basin is capable of falling down by providing a rotating shaft at a site where the plate material constituting the water intake basin is connected to the downstream side of the water passage of the sabo dam, The present invention is also characterized in that the lock member provided on the plate member is released so that the plate member can fall down.

The water intake mechanism of the sabo dam according to the present invention is characterized in that the deformable water intake basin connects the lower end of a plate-shaped air bag filled with air constituting the water intake basin to the downstream side of the water passage of the sabo dam, It is also characterized in that the air filled in the plate-like air bag is degassed so that the plate-like air bag can fall down.

The water intake mechanism of the sabo dam according to the present invention is characterized in that the above-described lodging or deformable water intake basin has a filter member made of a brush material or a fiber material attached to a side surface on the sabo dam side. .

As described above, the intake or deformable water intake basin is manufactured, arranged on the downstream side of the water passage of the sabo dam, and the terminal is extended to the sleeve part of the sabo dam. In such a case, the water that has passed through the sabo dam will naturally fall into the intake basin and then flow down through the intake basin to reach the sleeve of the sabo dam. .
On the other hand, a large amount of running water collides with the side wall of the intake basin during a flood, so a large force acts on the intake basin. In such a case, in order to prevent damage to the water intake basin, the water intake basin is overlaid or deformed to avoid collision with running water. When the flood has converged, the water intake can be resumed by returning the marrow to the original state again.

In addition, it is thought that sediment and fallen leaves flow into the intake basin along with the water intake. Or drop the construction down the dam. After that, the water intake basin is returned to its original state and water intake is resumed.
If the above process is repeated by automatic control, water intake can be continued.

Since the water intake mechanism of the sabo dam of the present invention is configured as described above, the structure is simple and maintenance is easy, and the intake water in the normal state and the collapse of the water intake dredge in the event of a clogging due to flooding or earth and sand, etc. A water intake mechanism of a sabo dam that can be easily switched can be provided.

In addition, since a filter made of brush or fiber material is attached inside the intake basin, the intake water will not be stagnant, and the dust trapped in the filter part will fall down and filter the flowing water. It can be swept away by simply passing water through the part.

It is a side view at the time of water intake which shows embodiment of the water intake mechanism of the sabo dam of this invention. It is the front view. It is a side view at the time of non-water intake. It is the front view. It is a side view at the time of water intake which shows another embodiment of the water intake mechanism of the sabo dam of this invention. It is a side view at the time of non-water intake.

Embodiments of a water intake mechanism for a sabo dam according to the present invention will be described below in detail with reference to the drawings.
As shown in FIGS. 1 to 4, the water intake mechanism of the sabo dam according to the first embodiment of the present invention is configured such that a falling water intake 12 is disposed on the downstream side of the water passage of the sabo dam 11, and its terminal is a sabo. It extends to the sleeve 13 of the dam 11.

That is, in the water intake mechanism of the sabo dam according to the first embodiment of the present invention, the falling water intake 12 is a plate 21 made of various materials such as a steel plate, resin concrete, FRP, etc. constituting the water intake 12. The rotary shaft 22 is provided at a portion connected to the downstream side of the water passage of the sabo dam 11 so as to be pivotably connected so that it can stand up and fall.
At that time, a lock member (not shown) made up of an arm with a hook or a support arm with an actuator provided at an appropriate interval on the plate member 21 is released so that the plate member 21 can be suitably laid down.

Accordingly, as shown in FIG. 1, in the normal state, water can be taken by the water intake basin 12 disposed on the downstream side of the water passage of the sabo dam 11, and the end of the water intake basin 12 is connected to the sleeve portion 13 of the sabo dam 11. The water that has passed through the sabo dam will naturally fall into the intake basin 12 and then flow down through the intake basin 12 to reach the sleeve 13 of the sabo dam 1 and the intake pipe. Water can be taken via (not shown).

On the other hand, since a large amount of water collides with the side wall of the water intake basin 12 during a flood, a great force acts on the water intake basin 12. In such a case, in order to prevent damage to the water intake basin 12, the water intake basin 12 is released by releasing the lock member to avoid collision with running water.
Further, when clogging occurs in the water intake trough 12 due to earth and sand, dust, fallen leaves, etc., the water intake trough 12 is overturned as shown in FIG. If the earth and sand, dust, fallen leaves, etc. in 12 are dropped to the downstream side of the sabo dam 11, troubles due to flooding and clogging can be avoided.
Thereafter, when the flood or clogging is resolved, the water intake can be easily resumed by returning the water intake basin 12 to the original state shown in FIG.
If the above process is repeated by automatic control, water intake can be continued.

In addition, a filter member made of a brush material 23 is attached to the side surface on the side of the sabo dam 11 in the above-described falling water intake trough 12.
That is, it is considered that dust and fallen leaves flow into the water intake basin 12 with water intake, but the dust and fallen leaves 24 that have flowed into the water intake basin 12 are entangled by the filter member and flow into the water intake pipe. Can be prevented.

As shown in FIGS. 5 and 6, the second embodiment of the water intake mechanism of the sabo dam according to the present invention is a plate-like air in which the deformable water intake 12 is filled with the air constituting the water intake 12. The lower end of the bag 31 is connected to the downstream side of the water passage of the sabo dam 11. Of course, the rigidity of the plate-like air bag 31 itself can sufficiently provide the function as the water intake trough 12, but the plate-like air bag 31 has an arm with a hook and an actuator provided at appropriate intervals. It is also possible to attach a lock member (not shown) composed of a support arm or the like so that the plate member 21 can be raised or fallen appropriately.

Therefore, if water is taken in the standing state of the plate-like air bag 31 shown in FIG. 5 and the air filled in the plate-like air bag 31 is degassed when a flood or clogging occurs, the water intake as shown in FIG. The earth and sand, dust, fallen leaves, etc. in the cage 12 can be dropped to the downstream side of the sabo dam 11.
Of course, when flooding or clogging is resolved, water intake can be easily resumed by returning the water intake trough 12 to the original state shown in FIG.

In addition, a filter member made of a fiber material 32 is attached to the side surface on the side of the sabo dam 11 to the water intake tub 12 that can fall down.
That is, it is considered that dust, fallen leaves, and the like flow into the water intake basin 12 with water intake, but dust, fallen leaves, etc. that have flowed into the water intake basin 12 are entangled by the filter member and flow into the water intake pipe. This can be prevented.

Since the water intake mechanism of the sabo dam of the present invention is configured as described above, the structure is simple and maintenance is easy, and the intake water in the normal state and the collapse of the water intake dredge in the event of a clogging due to flooding or earth and sand, etc. A water intake mechanism of a sabo dam that can be easily switched can be provided.

In addition, as long as the gist of the present invention is not impaired, the present invention can be applied to appropriate dams other than sabo dams.

DESCRIPTION OF SYMBOLS 11 Sabo dam 12 Water intake 13 Sleeve part 21 Plate material 22 Rotating shaft 23 Brush material 24 Dust, fallen leaves, etc. 31 Plate-shaped air bag 32 Textile material

Claims (4)

By placing an inflatable or deformable intake basin downstream of the sabo dam, and extending its terminal to the sleeve of the sabo dam, the intake basin can normally be taken in by the sabo dam. When the intake basin is clogged due to time or earth and sand, the intake basin is overlaid or deformed to avoid troubles caused by flooding or clogging, and when the flood or clogging is resolved, the intake basin is returned to its original state. Sabo dam intake mechanism characterized by resuming intake. The above-mentioned fallable intake dredging can be fallen by providing a rotary shaft at a site where the plate material constituting the intake dredge is connected to the downstream side of the water passage of the sabo dam, and the lock member provided on the above plate material is released. 2. A water intake mechanism for a sabo dam according to claim 1, wherein the plate material can be laid down. The deformable water intake saddle connects the lower end of a plate-shaped air bag filled with air that constitutes the water intake water intake to the downstream side of the water passage of the sabo dam, and removes the air filled in the plate air bag. 2. A water intake mechanism for a sabo dam according to claim 1, wherein said plate-shaped air bag can be laid down. 2. The water intake mechanism for a sabo dam according to claim 1, wherein the inflatable or deformable water intake basin has a filter member made of a brush material or a fiber material attached to a side surface on the sabo dam side.

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