JP2010111993A - Method for raising bank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique of a method for raising a bank on the occurrence of a flood. <P>SOLUTION: In this method for raising the bank, a retainer portion for firmly fitting a block, and the block, which are provided along the top of the bank, are employed; and the bank is raised by firmly fitting the block to the retainer portion for firmly fitting the block, in the presence of the risk of a break in the bank. The approximately trapezoidal block has a lower portion of one wall surface provided with an edge protruding forward. In the U-shaped retainer portion for firmly fitting the block, a bottom side is elongated downward; its leading end is protruded downward; and an edge of the block is inserted into the U-shaped inside. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention belongs to a technique of a method of raising a dike during a flood.

In order to prevent the flooding of rivers, lakes, etc. in the event of flooding, it has been practiced since ancient times to pile up sandbags filled with sand and other fillers in heavy bags such as hemp bags to raise the embankment and prevent breakage. JP-A-2002-69964 and JP-A-2001-81752 propose a method in which a bag filled with a water-absorbing polymer is prepared, and its volume weight is increased by supplying water to use as a sandbag. Japanese Patent Application Laid-Open No. 2006-283505 and Japanese Patent Application Laid-Open No. 2002-30669 propose a method in which a large number of open and closed frames are arranged in the front-rear and left-right directions and filled with sandbags or soil to be used for raising the bank.
Both methods require the presence of soil, making it impossible to obtain the amount of soil needed in an emergency where there is a risk of rupture in an urbanized area.

JP2002-69964 JP2001-81752 JP 2006-283505 A JP2002-30669

This invention exists in the proposal of the method in which the embankment of a bank can be raised also in the area where soil cannot be obtained.

The first invention comprises a block provided along the embankment and a block receiving portion, the block is substantially trapezoidal, and the lower wall portion constituting one side of the trapezoid has an edge protruding forward, and the block The receiving part has an inverted U shape, and the bottom side extends outward and protrudes upward at the tip, and the edge of the block can be inserted into the inverted U shape, and there is a risk of the bank breaking In some cases, the embankment is raised by fitting the block into the block receiving portion.
The second invention is composed of a U-shaped groove and a lid provided along the embankment, and one end of the lid is fitted into a small groove parallel to the U-shaped groove. This is a method of raising a dike composed of a U-shaped groove and a lid formed so as to rise at a right angle with a small groove as a base point.
According to the third aspect of the present invention, a tight bag is built in the U-shaped groove in the second aspect of the invention, and compressed air is blown into the tight bag when there is a risk of levee breakage. This is a method of raising a dike composed of a U-shaped groove lid for inflating and raising a pouch and a tight bag.
In the fourth aspect of the present invention, a block having a substantially trapezoidal shape and having an edge protruding outwardly at the open end of the side surface is laminated on the bank, and when the bank breaks down, the layer is stacked. This is a method of raising the levee by raising the levee by sequentially stacking blocks. The block for raising the dike was prepared in advance in the dike so that it could be used as a U-shaped groove.

According to the first aspect of the present invention, an embankment can be raised in an emergency in an area where soil is not available by providing a block receiving portion on the embankment in advance and preparing a separate block.
The second invention is normally used as a lid for a U-shaped groove, one end of which is fitted in a small groove parallel to the U-shaped groove, and the lid of the U-shaped groove can be set up vertically in the small groove. Therefore, the embankment can be raised in an emergency even in areas where soil is not available.
In the third aspect of the present invention, since the U-shaped structure constituting the second aspect of the present invention incorporates a tight-resistant bag and is inflated with compressed air to stand up, the strong embankment combined with the lid of the U-shaped groove is raised. Is possible.
According to the fourth aspect of the present invention, since a bank for raising a bank is prepared in advance as a U-shaped groove on the bank, it is possible to raise the bank in an emergency.

Hereinafter, the first invention will be described in more detail with reference to the drawings.
FIG. 1 is a conceptual diagram of an embankment raised according to the present invention.
FIG. 2 is a conceptual diagram of a block receiving portion provided on the bank.
FIG. 3 is a conceptual diagram of the block.

The block receiving portion shown in FIG. 2 is provided along the embankment, and the foundation is struck by crushed stone, concrete, or the like as required below and around the block receiving portion. The shape of the block receiving portion shown in the figure is a block arrangement portion having an inverted U-shaped edge insertion portion, the bottom portion is extended, and rises upward at the end portion. An edge portion of a block, which will be described later, is inserted into the edge portion insertion portion, and the block is fixed so as not to move together with the extended block arrangement portion.

As shown in FIG. 3, the block is substantially trapezoidal, and is provided with an edge portion extending laterally at the bottom of one side surface thereof, inserted into the edge insertion portion of the block receiving portion, and can be arranged on the block receiving portion. Yes.

FIG. 1 shows a state in which the blocks are arranged in the block receiving portion, but the blocks are overlapped so as to obtain a necessary raising amount as shown in the figure. In the figure, the block is two-tiered, but it can also be superposed further upward.

Hereinafter, the second invention will be described with reference to the accompanying drawings. FIG. 4 shows a state in each case in the normal state and an emergency in which there is a risk of the bank breaking.
FIG. 4 a shows a state in which a U-shaped groove is provided on the bank and a lid is placed on the U-shaped groove. One end of the lid is fitted in a small groove provided on the side of the U-shaped groove. FIG. 4b shows that the U-groove lid can stand up in the small groove in an emergency.

Hereinafter, the third invention will be described with reference to the accompanying drawings. The present invention is based on the second invention. The U-shaped premises are provided with a tight-resistant bag that can be inflated by press-fitting air. FIG. 5a shows a state in which the above-mentioned tightness-resistant bag is provided in the U-shaped structure in a normal state, and FIG. 5b shows that, in an emergency, the above-mentioned bag expands due to press-fitting compressed air not shown in the figure. 2 shows a state in which the embankment is raised so that water does not cross the embankment together with the U-shaped groove cover according to the second aspect of the invention.

Hereinafter, the fourth invention will be described with reference to the accompanying drawings.
FIG. 6 shows a state in which substantially trapezoidal blocks are stacked on the dike and are always used as U-shaped grooves. As in the first invention, the base is struck on the bottom and side surfaces of the U-shaped groove as necessary.
In the figure, blocks are stacked in three layers as U-shaped grooves. The open end of the block is provided on both sides with outwardly protruding edges.

As shown in FIG. 7, the raising method using the block typically fixes the first block and the second block using the edge portion. The blocks of the second stage and the third stage are fixed using the bottoms to which they are bonded. The fixing method can be implemented by, for example, bolts and nuts. Although not shown, the blocks may be stacked next to the U-shaped groove. It is preferable to pile up at the place where the foundation is struck.
The block in the first and second inventions is preferably made of concrete from the viewpoint of strength and durability. The block is preferably movable manually, and is preferably made of continuous foamed concrete or downsized.

It is a conceptual diagram of the embankment raised by this invention of this 1st invention. It is a conceptual diagram of the block receiving part provided in the embankment in the 1st invention. It is a conceptual diagram of the block in the 1st invention. It is a conceptual diagram which shows this 2nd invention. It is a conceptual diagram which shows invention of the subject 3. The U-shaped groove | channel which laminated | stacked the block of this 4th invention is shown. It is a conceptual diagram of the embankment raised by the 4th invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Block receiving part 11 Edge insertion part 12 Block arrangement | positioning part 2 Block 21 Edge part 3 U-shaped groove 31 U-shaped groove cover 32 Small groove 4 with which one end of the U-shaped groove lid fits Tight bag

Claims (4)

It consists of a block and a block receiving part provided along the embankment, the block is substantially trapezoidal, and the lower part of the wall surface constituting the side of one trapezoid has an edge protruding forward, and the block receiving part is reverse U-shaped The bottom side has a shape that extends outward and protrudes upward at the tip, and the edge of the block can be inserted into the inside of a reverse U-shape, and the block can be received by the block when there is a risk of bank breakage A method of raising the embankment by fitting it into the wall. It consists of a U-shaped groove and a lid provided along the embankment. One end of the lid is fitted into a small groove parallel to the U-shaped groove, and when the levee breaks down, the lid rises at a right angle with the small groove as a starting point A method of raising a dike comprising a U-shaped groove and a lid formed as described above. A tight bag is built in the U-shaped groove according to claim 2, and when there is a risk of levee breakage, the tight bag is inflated and raised by blowing compressed air into the tight bag. A method of raising a dike consisting of a U-groove lid and a tight bag. A block with a substantially trapezoidal shape and an edge projecting outwardly on the open end of the side surface is laminated on the levee so as to form a U-shaped groove. A method of raising the levee by raising the levee by sequentially stacking blocks.

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