JPH0913352A - River stored sand conveying equipment - Google Patents

Abstract

PURPOSE: To make it possible to store earth and sand which are flowed down without affecting an ecosystem and carry out the stored earth and sand. CONSTITUTION: A central dike is provided in a river 12, thereby doubling the river. During normal time, for example, upstream and downstream gates 1b and 2b of the river are closed on one side. The inside area of a sedimentary sand pond 5b between the upstream gate 1b and the downstream gate 2b is dried with an irrigation pump 8, thereby carrying out the earth and sand stored in the sedimentary sand pond 5b by means of a bucket suspending on a bucket rail 3. At the same time, the other upstream and downstream gates 1a and 2a are full-opened. Water is arranged to flow continuously by way of the gates while the flow-down earth and sand are stored in a sedimentary sand pond 5a between the upstream and downstream gates 1a and 1c. During flooding time, all the upstream and downstream gates 1a, 1b, 2a and 2b are full-opened and the flow-down earth and sand in both sedimentary sand ponds 5a and 5b are stored at that time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand storage and unloading facility for falling sediment in rivers.

[0002]

2. Description of the Related Art Conventionally, there has been no control over sediment flowing down a river having a dam.

[0003]

The following problems have arisen because the management of the falling sediment has not been carried out. Reducing flood control capacity due to progress of dam lake sedimentation (reduction of dam life) Difficulty in power generation due to progress of dam lake sedimentation Erosion of downstream coast due to storage of falling sediment in dam lake

Therefore, in order to solve such a problem in the dam lake, as shown in FIG.
It is considered that a sabo dam (sand dam) 11 is installed in the river 12 that flows into the river to prevent the inflow of sediment into the dam lake 13. However, when such a sand dam 11 is installed, the running water of the river 12 Impact on ecosystems due to blockage of rivers and Sabo dam 1
There was a problem in removing the sediment deposited in No. 1.

Therefore, in view of the above-mentioned prior art, it is an object of the present invention to provide a river sand storage / unloading facility which can store downflowing sediment without affecting the ecosystem and can carry out the stored sediment.

[0006]

[Means for Solving the Problems] First to achieve the above object
Of the present invention, an embankment provided in the river to multiplex the river, an upstream gate and a downstream gate respectively provided on the upstream side and the downstream side of each river multiplexed by the embankment, and each of the rivers. The sediment basin formed by digging down the river bed between the upstream and downstream gates of each and the sediments stored in the sediment basin between the upstream and downstream gates are carried out with the upstream and downstream lower gates of any of the rivers closed. And carrying out means for carrying out.

A second aspect of the invention is characterized in that, in the first aspect of the invention, drainage means for discharging water from the closed sand basin between the upstream and downstream gates is provided.

According to a third invention, in the first or second invention, the carry-out means has bucket rails extending over both banks of the river, and a traverse crane capable of reciprocating the bucket rails along the water flow direction of the river. And a bucket that moves along the bucket rail and carries out the earth and sand stored in the sediment basin to the riverbank.

[0009]

According to the first aspect of the present invention, after closing only the upstream and downstream gates of any of the multiplexed rivers, the sediment stored in the sedimentation pond of the river is removed by the unloading means. Carry out. At this time, other rivers where the upstream and downstream gates are open will continue to flow, and the sediment will be stored in the sedimentation pond of the river. In addition, at the time of flood with much sediment, it is possible to store all the sediment at this time by opening all the upstream and downstream gates.

According to the second aspect of the invention, the drainage means drains the water from the closed sand basin between the upstream and downstream gates. Thereby, the sediment can be easily carried out from the sediment pond.

According to the third aspect of the present invention, the bucket moves along the bucket rail in the river width direction and the bucket rail moves along the water flow direction by the traverse crane, so that the sedimentation of the entire sedimentation pond is efficiently performed. Can be unloaded.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view of a river sand unloading facility according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
Is a sectional view taken along the line BB of FIG. 1, and FIG. 4 is a sectional view taken along the line C-C of FIG.

As shown in these drawings, the central dike 14 provided in the center of the river 12 doubles the river, and water flows to the upstream side and the downstream side of each of the doubled rivers. Upstream gates 1a and 1b and downstream gate 2 for blocking
a and 2b are provided respectively.

The upstream gate 1a includes a switch room 16c provided upstream of the central bank 14 and a switch room 1 provided on one riverbank.
6a and the switch room 16
It is opened and closed by a switch provided in a and 16c. The upstream gate 1b is provided between the switch room 16c and the switch room 16b provided on the other riverbank.
It is opened and closed by a switch provided in 6b and 16c.

The downstream gate 2a includes a switch room 16e provided on the downstream side of the central bank 14 and a switch room 16 provided on one shore.
It is provided between the switch room 16d and
It is opened and closed by the switch provided in 16e. The downstream gate 2b is the switch room 16e and the switch room 1 provided on the other riverbank.
It is installed between 6f and these switch room 16
It is opened and closed by a switch provided in e and 16f.

Then, between the upstream and downstream gates 1a and 2a on one side, a sand basin 5a for storing the falling sediment is formed by deeply digging the riverbed between them, and between the other upstream and downstream gates 1b and 2b. By deeply digging the riverbed in the meantime, a sand basin 5b for storing the falling sediment is formed, and a pumping pump 8 is provided near these sand basins 5a and 5b.

The carrying-out means for carrying out the earth and sand stored in the sand basins 5a and 5b is constituted by the bucket rail 3, the bucket 7, and the like. The bucket rail 3 is provided on both sides of the river 12, and the central portion thereof is supported by a central support rail 4 provided along the water flow direction between the switch chambers 16c and 16e. The traverse cranes 6a and 6b are driven to move along the central support rail 4. The bucket 7 is suspended on the bucket rail 3 and moves along the bucket rail 3 and is driven up and down between the bucket rail 3 and the sand basins 5a and 5b. In addition, 15 in FIG. 1 is a connecting bridge. Further, the conventional sabo dam 11 is removed.

Therefore, according to the river sand storage unloading facility having the above-described structure, normally, as shown in FIGS. 1 to 4, for example, one of the upstream and downstream gates 1b and 2b is closed, and the pumping pump 8 is used to set the sand basin 5.
After the water in b is pumped out and the inside of the sand basin 5b is made dry, the bucket 7 moves along the bucket rail 3 and the bucket rail 3 moves along the central support rail 4 by the traverse cranes 6a and 6b. By doing so, the earth and sand stored in the sand basin 5b efficiently in the bucket 7 (sand 1
7b) is removed and the sand 17b is carried out so as to be transferred to a transportation means such as a truck 9.

At this time, the other upstream / downstream gate 1
The a and 2a are fully opened, and the water of the river 12 is continuously flowed through the a and 2a, and the falling sediment is stored in the sediment pond 5a between the upstream and downstream gates 1a and 2a (sand 17a).

In addition, at the time of flood when sediment flows down,
By fully opening all the gates 1a, 1b, 2a, 2b, the sediments at this time are stored in the both sediment ponds 5a, 5b.

From the following points, the river sand storage unloading facility has the following effects. (1) Although the conventional sabo dam 17 was only able to store downflowing sediment, this facility can efficiently remove the sediments 17a, 17b of the sediment basins 5a, 5b. (2) One side of the river, that is, the sedimentation basin (5a or 5b) of the river where the upstream / downstream gates (1a, 2a or 1b, 2b) are open, always stores downflowing sediment and the downflowing downstream. Can be prevented. (3) There is no impact on the ecosystem because water can be constantly run by the river on one side. (4) Efficient storage of runoff is possible during floods.

[0023]

According to the present invention as described in detail with reference to the above embodiments, the rivers are multiplexed, a sedimentation basin is provided for each river, and a means for carrying out sediments is provided. Produce an effect. (1) Sediment, which could only be stored in conventional sabo dams, can be efficiently removed. (2) Sediment can be constantly stored in the river where the upstream and downstream gates are open to prevent sediment from flowing down. (3) There is no impact on the ecosystem because water can always flow in the river where the upstream and downstream gates are open. (4) Sediment can be efficiently stored during floods.

[Brief description of the drawings]

FIG. 1 is a plan view of a river sand unloading facility according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

FIG. 5 is an explanatory diagram showing the equipment layout of a dam lake.

[Explanation of symbols]

1a, 1b Upstream gate 2a, 2b Downstream gate 3 Bucket rail 4 Central support rail 5a, 5b Sand basin 6a, 6b Traverse crane 7 Bucket 8 Pumping pump 12 River 14 Central embankment 16a, 16b, 16c, 16d, 16e, 16f Open / close Machine room

Claims (3)

[Claims] 1. An embankment provided in a river to multiplex the river, upstream gates and downstream gates respectively provided on the upstream side and the downstream side of each river multiplexed by the embankment, and A sand basin formed by digging down the river bed between the upstream and downstream gates of each river, and the sediment stored in the sand basin between the upstream and downstream gates with the upstream and downstream lower gates of any of the rivers closed. A river sand storage unloading facility, characterized by comprising unloading means for unloading. 2. The river sand storage unloading facility according to claim 1, further comprising drainage means for discharging water from the sand basin between the closed upstream and downstream gates. 3. The river sand storage unloading facility according to claim 1 or 2, wherein the unloading means is a bucket rail extending over both banks of the river, and a traverse crane capable of reciprocating the bucket rail along the water flow direction of the river. A river sand storage unloading facility, comprising: a bucket that moves along the bucket rail and carries out the earth and sand stored in a sediment basin to a riverbank.