JPH08239816A - Embankment and its construction method - Google Patents

Abstract

(57) [Summary] [Purpose] Procurement of construction materials can be easily obtained on the spot, and rapid construction is possible, and construction costs can be reduced. [Structure] A horizontally elongated bag body 2 of mesh that allows water to pass through and stops sediment is provided with a sediment inlet 3 having a valve 14
Sandbags 13 filled with locally generated soil were arranged or stacked in the oblong bag body 2 having the earth and sand inlet 3 having 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breakwater body or a breakwater body and a construction method thereof.

[0002]

2. Description of the Related Art Generally, a breakwater such as a breakwater and a breakwater provided at the entrance of a harbor or at the coast is a mixed levee foundation (mound) and concrete caisson.

Construction of a mixed dike by the caisson method is shown in FIG.
As shown in, a rubble stone 8 as a foundation is piled up at a predetermined position on the seabed 7, and an asphalt mat 9 is laid on the pile to form a foundation (mound).

Next, a caisson 10 which is a rectangular parallelepiped box made of reinforced concrete prepared at another place such as land and provided with a partition wall and a cavity for reinforcement therein is towed by a tugboat or the like to the sea, and Carry it to the position where it was formed, carefully submerge it on the asphalt mat 9 on the foundation, and further fill the caisson cavity with a filling material 11 such as sand, stone, or concrete to increase resistance to wave forces. Finally, the caisson 10 is covered with the lid 12 to complete the construction.

[0005]

However, in this method of constructing a mixed dike using caisson, it is necessary to carry a large amount of rubble, construct a caisson, and tow this caisson. It is difficult, and in recent years, it has become difficult to procure construction materials, especially in the case of large-scale construction.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to procure construction materials on the spot, which is easy, and can be quickly constructed, and construction costs can be reduced, and a construction method thereof. To provide.

[0007]

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has a laterally slanted bag body of a mesh through which water is passed and which stops the sediment, as a bank, provided with a sediment inlet having a valve, and having this valve. The main idea is to arrange or stack sand bags filled with locally-generated soil inside a horizontally long bag with a sediment inlet. The bag is provided with a sediment inlet with a valve, the oblong bag with the sediment inlet is laid on the seabed or the water bottom, and the dredging machine provided on the seabed or the water bottom from the sand inlet and the dredging pump provided on the pontoon are used. ,
The gist is to send the seabed or waterbed sand into the oblong bag to fill it up, and to arrange or stack the sand bags filled with such locally generated soil.

[0008]

According to the first aspect of the present invention, the earth and sand filled in the oblong bag having the valve and having the earth and sand inlet are stopped by the mesh, but only water is discharged from the bag. As a result, sandbags that will become sandbags are constructed, and these are arranged.
Or it can be installed stably on the seabed or waterbed by stacking, and even if a big wave comes, the energy of the wave is effectively absorbed and the wave-proof effect is great.

According to the second aspect of the present invention, in addition to the above-mentioned action, the sand bag is provided by a dredger provided on a seabed or a waterbed from a sediment inlet having a valve, and a dredging pump provided on a pontoon. Alternatively, since the sand on the bottom of the water is sent into the oblong bag to fill it, construction materials can be procured on the spot, and rapid construction is possible.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of the bank body of the present invention. 2 to 5 are explanatory views of each step showing one embodiment of the method for constructing a bank according to the present invention.

In FIG. 1, the bank 1 is constructed by arranging or stacking a plurality of sand bags 13. This sandbag 13
Is formed by a horizontally elongated bag body 2 of a mesh that allows water to pass through and stops the sediment. This mesh is 120 mesh made of nylon, other synthetic resin fibers such as vinylon, polyethylene and polypropylene, natural fibers such as cotton and hemp, or , Wire mesh, etc. can be used.

Further, the shape of the laterally long bag body 2 is such that, in addition to a columnar shape having a circular cross section, a polygonal columnar shape having a triangular cross section, a quadrangle or the like is laid horizontally.

The horizontal bag 2 is provided with the earth and sand injection port 3 having the valve 14, and the place should not be an obstacle when the horizontal bags 2 are arranged as sand bags 13 or stacked. However, there is no particular limitation, but a drum surface at the end is preferable.

As a method for constructing the bank 1 of the present invention, as shown in FIG. 2, the oblong bag 2 provided with the earth and sand inlet 3 having the valve 14 is provided on the seabed 7 or a desired place on the waterbed such as a lake. As shown in FIG. 3, the soil and sand inlet 3 is connected to the dredger 15 installed on the seabed or the waterbed via the dredging pump 5 installed on the berth 6 and the hose 4.

In this way, the valve 14 is opened and the dredging pump 5 is operated to send the seabed or waterbed sediment 16 into the horizontally elongated bag body 2 together with seawater or fresh water. As shown in FIG. 4, the seawater or fresh water sent to the inside of the oblong bag 2 passes through the meshes of the oblong bag 2 and is discharged so as to automatically escape to the inside of the oblong bag 2. Only deposits and fills the soil 16 to form a sand bag 13.

Further, as shown in FIG. 5, the above steps are repeated to form a plurality of sand bags 13, which are arranged in the lateral direction, and which are stacked vertically to form the bank 1.

[0017]

As described above, the levee body and its construction method of the present invention are easy because procurement of construction materials can be obtained on the spot, and moreover, rapid construction is possible and the construction cost can be reduced. .

[Brief description of drawings]

FIG. 1 is a perspective view showing one embodiment of a bank according to the present invention.

FIG. 2 is an explanatory diagram of a first step showing one embodiment of the method for constructing a bank according to the present invention.

FIG. 3 is an explanatory diagram of a second step showing one example of the method for constructing a bank according to the present invention.

FIG. 4 is a perspective view of a third step showing one embodiment of the method for constructing a bank according to the present invention.

FIG. 5 is an explanatory view of a fourth step showing one embodiment of the method for constructing a bank according to the present invention.

FIG. 6 is a vertical sectional side view showing a conventional example.

[Explanation of symbols]

 1 ... Embankment 2 ... Oblong bag 3 ... Sediment inlet 4 ... Hose 5 ... Dredging pump 6 ... Barge 7 ... Seabed 8 ... Rubble 9 ... Asphalt mat 10 ... Caisson 11 ... Filler 12 ... Lid 13 ... Sandbag 14 … Valve 15… Dredger 16… Sediment

Claims (2)

[Claims] 1. A horizontally elongated bag body of a mesh through which water is passed to stop the earth and sand is provided with a sediment inlet having a valve, and a sand bag filled with locally generated soil is arranged in the horizontally elongated bag body having the valve and having the inlet of sand. , Or a bank body characterized by being stacked. 2. A horizontal bag that has a valve, is provided in a horizontally elongated bag body that allows water to pass therethrough and that stops the sediment, and the horizontally elongated bag body with the valve is laid on the seabed or the seabed. With the dredging machine installed on the bottom of the water and the dredging pump installed on the pontoon, the sand on the sea floor or the bottom of the water is fed into the oblong bag to fill it up, and sand bags filled with such locally generated soil are arranged or stacked. How to construct a dam body.