JP2014173252A5

JP2014173252A5 -

Info

Publication number: JP2014173252A5
Application number: JP2013044467A
Authority: JP
Filing date: 2013-03-06
Publication date: 2016-04-14
Anticipated expiration: 2033-03-06

Description

上記課題を解決する土砂移送設備は、流水および土砂を、ダム貯水池直上流にて堰き止め、土砂を含む流水を輸送する土砂輸送管へと流水を分派するための分派堰と、前記分派堰の堤体に設けた呑口を経由し、分派堰が堰き止めた前記流水および土砂をダム貯水池における死水域上の水面まで導く土砂輸送管とを含むことを特徴とする。 Sediment transport equipment for solving the problems is a flow water and sediment, blocked by dam reservoir immediately upstream, and offshoot weir for splitting the flowing water to the sediment transport pipe for transporting the flowing water containing the sediment, the splinter weir the via bung hole provided in the embankment, characterized in that splitting weir damming was pre Symbol stream water and containing a sediment transport pipe leading to sediment to the water surface on the dead water region in the dam reservoir.

また、本発明の土砂移送方法は、ダム貯水池直上流に設置した分派堰において、土砂を含む流水を堰き止めて、当該分派堰の堤体に呑口を設けた土砂輸送管により、前記分派堰が堰き止めた前記土砂を含む流水をダム貯水池における死水域上の水面まで導いて吐出口から吐出させるものであり、前記流水の含む所定粒径以下の細粒分を、前記吐出口の周囲を囲むシルトフェンスで遮断するとすれば好適である。これによれば、濁水の拡散を防止することができる。 Also, soil transportation method of the present invention is a splinter weir installed in dam reservoir immediately upstream, soil sand dammed including flow water, sediment transport tube having a bung hole in the embankment of the sects weir, is intended to eject the sediment the splinter weir is dammed including flow water from being led into the discharge port to the water surface on the dead water region in the dam reservoir, the fine fraction below a predetermined particle diameter or less, including the said flow water, It is preferable to block with a silt fence surrounding the discharge port. According to this, diffusion of muddy water can be prevented.

Claims

Flow water and sediment, blocked by dam reservoir immediately upstream, via an offshoot weir for splitting the flowing water to the sediment transport pipe for transporting the flowing water containing earth and sand, a bung hole provided on the embankment of the splinter weir , sediment transport equipment, which comprises a sediment transport pipe leading to the water surface on the dead water region in the dam reservoir pre Symbol stream water and sediment splinter weir is dammed.

2. The sediment transport equipment according to claim 1, comprising: a gantry that supports the sediment transport pipe on land at regular intervals; and a float that supports the sediment transport pipe at regular intervals on the water of a dam reservoir. .

The earth and sand transport facility according to claim 1 or 2, wherein the earth and sand transport pipe has a gradient of about 1/200 or more between the throat and the discharge port.

A plurality of the earth and sand transport pipes are provided, and the piers of the earth and sand transport pipes are arranged apart from each other in the vertical direction in the dike of the branch weir. The earth and sand transfer equipment according to any one of 3 above.

The earth and sand transfer equipment according to any one of claims 1 to 4, further comprising a sheath pipe covering a discharge port of the earth and sand transport pipe located on a water surface in a dead water area and a silt fence surrounding the periphery thereof.

In sects weir installed in dam reservoir immediately upstream, soil sand dammed including flow water, sediment transport tube having a bung hole in the embankment of the splitting weir, the soil in which the splinter weir is dammed discharged from the discharge port leading to including flow of water to the water surface on the dead water region in the dam reservoir, sediment transport wherein the.