JP2009144331A - Repair method for collapsed section of dike for river, lake, and marsh - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for repairing a collapsed dike temporarily and preventing flooding through the collapsed dike. <P>SOLUTION: In this repair method for the collapsed section of the dike for river, lake, and marsh, a boat loaded with crushed stones is made to approach the collapsed section of the dike for river, lake, and marsh, a hole is drilled in the boat to fill the boat with water and sink the boat to block the collapsed section of the dike temporarily. In this method, gunpowder is made to explode by remote control operation, and a hole is drilled in a side of the boat to fill the boat with river water. A bottom of the boat is formed to be flat to stabilize the sunken boat. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention is a technique for temporarily repairing the breakage of a dike during a flood.

The method for preventing the breakage of rivers, lakes, and other levees caused by flooding is as follows.For example, as disclosed in JP-A-2001-081752, sandbags filled with water-absorbing organic polymer resin are stacked on the levee / bank and river water overflows. In order to prevent breakage of the levee as disclosed in JP-A-2006-161364, a sheet composed of a plurality of small rooms communicating with each other that swells when filled with water is placed along the back surface of the levee A method of disposing is disclosed.
However, these methods are methods for preventing the levee from breaking down, not repairing the once dammed levee, and there was no method other than to minimize damage by evacuating appropriate residents nearby.

JP2001-081752 JP2006-161364

The present invention is to provide means for temporarily repairing a broken embankment and stopping flooding from the broken embankment.

The first aspect of the present invention is to bring a ship carrying crushed stones to the breakage point of a river / lake dike, make a hole in the ship, submerge it, sink the ship, and temporarily close the breakage point of the dike. This is a method for repairing the levee break site. Sink the ship in place to block the breakup of the embankment. At that time, the ship was filled with crushed stones to increase its weight and sink, preventing movement due to water flow.
The second aspect of the present invention is to carry a net filled with crushed stone by separating the net filled with crushed stone or separating the net filled with crushed stone by transporting it to the breakage point of the river / lake embankment by connecting it to a buoyant filled with crushed stone. This is a method for repairing levee breached places such as rivers and lakes that temporarily block the levee breached place by being thrown into the breached place. The buoyancy of the floating bag was used to carry the crushed stone to the breakage point of the embankment.

The present invention (1) transports a ship loaded with crushed stones to a levee breached place and closes the breached part by sinking. (2) Connects a net filled with crushed stone to a floating bag and carries it to the levee breached place. By separating it, the site of the breach is blocked, so that the flood water from the river can be prevented from flowing into the inhabited area.

Hereinafter, the first invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a place where a river breaks.
FIG. 2 is a conceptual diagram showing a state in which a ship carrying crushed stones is placed sideways at the rupture site.
2a is a plan view and FIG. 2b shows a cross section thereof.

As shown in FIG. 2, the ship carrying the crushed stone is guided from the place where the ship is moored by remote control, and is placed next to the breakage point of the embankment. Once it is laid down, it is sunk by making a hole in the hull of the ship and submerging it.
If necessary, sink several ships.

The method of making a hole in the ship's hull can be carried out by exploding explosives remotely. It is preferable to keep the bottom of the ship flat so that it does not tilt when the ship sinks.

If the ship sinks, fill the narrow gap between the ship and the embankment with sandbags or crushed stone, or pour concrete to stop the water.

Hereinafter, the second invention will be described with reference to the drawings.
As shown in Fig. 3, a net filled with crushed stone in a floating bag and a gabion are tied and transported to a river / lake breakup site. Guide to the place where crushed stones are thrown in using ropes connected to both ends of the float. A hole is made in the float bag or an air inlet is opened to release the air in the float bag, and the crushed stone in the net and the gabion is put into the rupture site together with the float bag. Alternatively, the net or gabion may be separated from the floating bag and thrown.

If the crushed stone in the net or gabion has been thrown in, the sandbag or crushed stone is filled in the gap between the place where the crushed stone is thrown in and the embankment, or the concrete is poured to stop the water as described above.

It is a conceptual diagram which shows the break place of an embankment. It is a conceptual diagram which shows the state which blocks the breakup place of a dike with a ship. It is a conceptual diagram which shows the state which blocks the break place of an embankment with a float and crushed stone.

Explanation of symbols

1 Rivers, etc. 2 Embankment breaking place 3 Crushed stone ship 4 Floating bag 5 Crushed stone net and gabion 6 Rope 7 Embankment

Claims (2)

Bring a ship carrying crushed stones to the breakage site of a river / lake dike. Method. By connecting to a breakage place on a river or lake embankment by connecting to a net floating bag filled with crushed stone, removing the air in the floating bag or separating the net filled with crushed stone, and putting the net filled with crushed stone into the breakage place A method for repairing levee breaks such as rivers and lakes that temporarily block the levee breaks.

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