JP3296422B2 - Dam dredging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dam dredging device for discharging sediment, trees, fallen leaves and the like deposited on the water bottom of an existing dam.

[0002]

2. Description of the Related Art Generally, in dams used for irrigation and power generation, etc., rivers between mountains are blocked to store the amount of water flowing in from the upstream side. As trees and defoliation accumulate on the bottom of the lake, the effective water storage capacity of the dam is greatly reduced, and the dam's storage capacity is reduced. To prevent such dams from storing water, to discharge sediment, etc., that had accumulated on the dams,
For example, a tugboat is floated on the water surface of a dam, and earth and sand deposited on the water bottom are dredged by an earth-moving machine mounted on the tugboat and discharged to the land.

[0003] However, many dams used for power generation, irrigation, flood control and the like are constructed in remote places between mountains, and it is extremely difficult to transport a tugboat for dredging sediment at the bottom of the water to the dam. It is. In addition, the dredged sediment is disposed of as waste, for example, in a vacant lot near a dam. However, this method has a limit in the disposal of the sediment and has a problem in terms of environmental conservation.

[0004] It is an object of the present invention to provide a dredging device for a dam that solves such problems and that facilitates the transport of dredging equipment and that can reuse sediment as an effective resource.

[0005]

According to a first aspect of the present invention, there is provided a dredging apparatus for a dam, wherein the sediment deposited on the bottom of the dam is pulled up, and the sediment pulled up by the lifting means is transported to land. Transport means, a storage section for storing the sediment transported by the transport means, a first treatment facility adjacent to the storage section for flowing the sediment together with water to precipitate and separate the sediment, A second treatment facility adjacent to the first treatment facility, for filtering water sent from the first treatment facility and returning the filtered water to the dam.

[0006] With the above structure, the sediment pulled up by the pulling means is conveyed to the accommodating section by the conveying means, and the sediment sent to the accommodating section flows into the first processing facility together with the water. Here, the sediment sent out from the storage part is separated into heavy gravel, sand, soil, and mulch by the flow of water, and is deposited on the bottom of the first treatment facility. In this way, the first
Gravel, sand, soil, humus such as driftwood and litter collected at the bottom of the treatment facility are collected and reused as resources. Further, the water of the dam flowing into the first treatment facility is filtered by the second treatment facility, and the purified water is returned to the dam again, so that the water quality of the dam is also improved.

According to a second aspect of the present invention, there is provided a dredging device for a dam according to the first aspect, wherein the lifting means is mounted on a float floating on the water surface of the dam. Accordingly, there is no need to transport large vessels such as tug boats to mountainous areas where traffic is inconvenient, and the lifting means can be easily assembled at the dredging site.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view showing an outline of the present embodiment. In FIG. 1, reference numeral 1 denotes a means for pulling up a sediment S deposited on a lake bottom of a dam D damped by a bank 1A, and a float 2 floating on the surface of the dam. And a civil engineering excavator 3 such as a bucket loaded on the float 2. The sediment S picked up by the pulling means 1 is discharged to a discharge float 5 floating on the water surface of the dam, and a storage unit provided on land by a conveyor 7 serving as a transporting means extending from the discharge float 5 to the land. It is transported to the stock yard 8. Sediment S in this stockyard 8
Is discharged to the first treatment facility 10 adjacent to the stockyard 8 through the communication passage 9. A water supply pipe 12 for supplying water stored in the dam D is connected to the first treatment facility 10 in proximity to the communication passage 9, and supplies the sediment S sent from the stockyard 8 from the water supply pipe 12. The sediment S is made to flow together with the water W of the dam D
Gravel A, sand B, soil C, and mulch D are sequentially separated from the upstream side according to the specific gravity and deposited on the bottom of the first treatment facility 10. The first processing facility 10 is located downstream of the first processing facility 10.
A second treatment facility 17 including a filtration device 15 for filtering the water inside and an active water treatment facility 16 is provided, and the water purified in the second treatment facility 17 is returned to the downstream side of the dam D. The float 2 on which the excavator 3 is mounted and the float 5 for discharge are divided into a plurality of parts and assembled and integrated at a dredging site. Although not shown, these floats 2 and 5 are provided with an outboard motor such as a screw so that they can move on the water surface.

[0009] The dam dredging apparatus of the present embodiment configured as described above has a sediment S containing large-sized gravel, small-sized sludge and litter, trees, etc., deposited on the lake bottom of the dam D.
Is excavated by the civil engineering excavator 3 loaded on the float 2,
This is temporarily piled up on the discharge float 5 and the conveyor 7
To the stockyard 8. The sediment S in the stockyard 8 passes through the communication passage 9 to the first treatment facility 10.
The first treatment facility 10 is connected to a water supply pipe 12 which is close to the communication passage 9 and communicates with the dam D.
The sediment S sent from the stock yard 8 and the water W of the dam D supplied from the water supply pipe 12 are treated in the first treatment facility
The sediment S sent out from the stockyard 8 is separated into gravel A, sand B, soil C and mulch D by the difference in the specific gravity of the sediment S by flowing the sediment S into the bottom 10 of the first treatment facility 10. Deposited on Gravel A, sand B, soil C, humus D such as driftwood and deciduous soil collected at the bottom of the first treatment facility 10 after being separated in this way are collected. Gravel A, sand B, etc. are construction materials, and soil C is soil. The improved material, humus D, can be reused as fertilizer for agriculture and horticulture. Furthermore, the first
The water of the dam D flowing into the treatment facility 10 is purified through the filtration device 15 and the active water treatment facility 16, and is returned to the dam D again.
Therefore, by separating and recovering the treated sediment S, it can be reused as an effective resource. Moreover, it is reasonable to separate part of the sediment S of the dam D by flowing a part of the water blocked by the dam D, and the water of the dam D flowing into the first treatment facility 10 is Processing facility 17
The water quality is improved by returning the water to Dam D, which contributes to environmental conservation. Furthermore, by floating the excavator 3 and the conveyor 7 on the water surface mounted on the floats 2, 5, these floats 2,
5. Assemble these floats 2, 5 with the drilling rig 3,
By installing the conveyor 7, there is no need to transport large vessels such as tug boats to mountainous areas where traffic is inconvenient.

Although the dam dredging device of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, an example in which the sediment is pulled up by the excavator 3 is shown, but the sediment may be sucked by a pump. Furthermore, the unloading device is not limited to a conveyor,
You may comprise so that it may be pressure-fed to a stockyard by a compressor etc.

[0011]

According to the dredging device for a dam according to the first aspect of the present invention, pulling means for pulling up sediment deposited on the water bottom of the dam, and conveying means for conveying the sediment picked up by the pulling means to land. And a stock yard for receiving the sediment conveyed by the conveying means, and flowing the sediment together with the water of the dam adjacent to the stock yard to settle the sediment on gravel, sand, mud, mulch, etc. A first treatment facility having a first treatment facility for separation and a second treatment facility adjacent to the first treatment facility for filtering water sent from the first treatment facility and returning the filtered water to the dam; Gravel, sand, soil, and humus collected at the bottom of the can be collected and reused as resources.
By purifying the water of the dam that has flowed into the treatment facility in the second treatment facility and returning it to the dam again, it can contribute to improving the water quality of the dam and also contribute to environmental conservation.

According to a second aspect of the present invention, there is provided a dredging apparatus for a dam according to the first aspect, wherein the lifting means is mounted on a float floating on the water surface of the dam. There is no need to transport large vessels such as tugboats to the inconvenient mountainous areas easily, and the lifting means can be easily assembled at the dredging site.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pulling means 2 Float 3 Excavator 7 Conveyor 8 Stockyard (accommodation part) 10 First treatment facility 15 Filtration device 17 Second treatment facility W Sediment

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02F 3/94 E02F 7/00

Claims (2)

(57) [Claims] 1. A pulling means for pulling up sediment deposited on the water bottom of a dam, a conveying means for conveying the sediment picked up by the pulling means on land, and a storage unit for storing the sediment conveyed by the conveying means. And a first treatment facility adjacent to the storage section for causing the sediment to flow in with water and sedimenting and separating the sediment; and a water sent from the first treatment facility adjacent to the first treatment facility. And a second treatment facility for filtering and returning the filtered water to the dam. 2. The dam dredging device according to claim 1, wherein said lifting means is mounted on a float floating on the water surface of the dam.