JPS6261726B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for reclaiming a landfill site such as the sea using dumped material containing floating matter such as household garbage.

Conventionally, waste is disposed of in landfills by simply dumping it into vast landfills, but floating materials spread throughout the vast landfills, which poses sanitary and disaster prevention problems. For this purpose, as shown in Figure 1, partition banks 1, 1 are constructed by bringing in earth and sand from outside, and these partition banks 1, 1 are installed vertically and horizontally to divide the area, and dump trucks, etc. for dumping are placed on top of the partition banks 1, 1. The system is run and waste is put into each compartment.

However, in this case, the finite waste dumping space would be filled with things other than waste, making it impossible to utilize all of the landfill space effectively. Also, instead of using earth and sand, it is possible to construct dikes by constructing steel sheet piles, etc., at predetermined intervals to prevent the dispersion of floating materials, and dumping waste therein, but it is also possible to construct dikes by installing the sheet piles all the way to the bottom of the water. This poses problems in terms of economy and workability. In particular, if the bottom of the water is soft ground, it is difficult to put it into practical use because the steel sheet piles must be driven into the ground below the soft layer.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to construct the above-mentioned partition dike using waste materials such as garbage, to make effective use of the landfill site, and to provide a garbage division weir that is easy to construct. .

Embodiments of the present invention will be described in detail below with reference to the drawings.

When constructing an encircling weir by the method of the present invention, first, ropes, chains, belts, etc. of sufficient strength are installed in the water area where the partition dikes 1, 1, etc. of the reclaimed area as shown in the first diagram are to be constructed. Two ropes 2, 2 are stretched near the water surface as shown in the second figure with an interval to be described later, and both ends of the ropes are connected to a quay, embankment, anchor, etc.

A net-like structure shown in FIG. 3 is fastened to the installation ropes 2, 2.

The net 3 of this net-like structure is made of wire mesh plastic net, fiber, fishing net, etc. The upper end of the net 3 floats 0.1 to 2 m above the water surface 4, and the lower end hangs down 0.5 to 5 m below the water surface. Floats 5, 5 are attached to the upper part of the net body 3, and a weight 6 made of a chain or the like is attached to the lower end of the net body 3.

The length of the net body 3 is approximately 5 to 50 m, and the mesh size is 10.
It is approximately 100 mm in diameter and prevents floating objects such as garbage from passing through, but allows water to pass through freely.

As shown in the third figure, a reinforcing and fastening rope 7 is fixed to the middle part of the net body 3, and as shown in the fourth figure, both ends of the fastening rope 7 are connected to the installation rope 2,
2. Tighten at intervals of 5 to 50 m.

The distance between the installation ropes 2, 2 should be set at the upper part of the planned surrounding weir 9, since when using dumped material with a lot of sediment, the surrounding weir 9 reaching the water bottom 8 will be formed as shown in Figure 2 A. If the cross-sectional shape of the embankment is determined by calculating the angle of repose θ of the dumped earth and sand from the width l and height h,
The width is such that the earth pressure of the embankment does not apply to the tightening rope 7 of the net body, preferably the side of the weir 9 and the net body 3 are arranged at intervals of 0.5 to 3 m, and there is a space for storing floating objects 10 between them. form.

When using discarded material with a large amount of floating matter, as shown in Figure 2 B, the settled matter 12 sinks to the seabed and forms a bank, and the floating matter 10 floats upward, so in this state, a predetermined amount of After putting in the waste 11, earth and sand 13 is placed above the floating material 10, and the floating material 10 is compacted to form a surrounding weir 9 with an upper width l.
Therefore, the distance between the installation ropes 2, 2 is equal to the upper width l.
Make it slightly wider. In order to reduce the lateral pressure caused by the earth and sand 13, it is preferable that the distance between the surrounding weir 9 and the net body 3 be 0.5 to 3 m, as in the case described above.

Next, as shown in the second diagram, the waste 11 containing the floating matter 10 is thrown into the waste division weir, that is, between the nets 3, 3. At this time, the floating matter 10 in the waste 11 is prevented from spreading throughout the landfill site by the waste division weir, and can be used as a component of the surrounding weir 9, that is, the partition bank.

In addition, when placing the earth and sand 13 shown in FIG. 2, it is preferable to lay a plastic net, woven cloth, wire net, etc. on the upper surface of the floating object 10, and spread the earth and sand 13 thereon.

Since the unit of the network structure in Fig. 3 is 5 to 50 m, only the relatively small pressure of waste for 5 to 50 m is applied to the network structure, and the lateral pressure of large waste across the entire surrounding weir is It will be supported by the high-strength installation rope 2 shown in Figure 4.

As described above, according to the method of the present invention, the surrounding weir or partition bank is constructed using waste materials such as garbage, so that the landfill site can be used effectively.

In addition, if the net-like structure shown in Figure 3 is extended from one end of the landfill to the other as shown in Figure 2, the net will support the pressure of the waste along the entire length of the weir, resulting in an extremely high-strength structure. It is necessary to use a thick material.
However, if thicker members are used, the rigidity will increase,
In addition, the weight increases, making it extremely difficult to work near the water surface.

However, in the present invention, since the installation rope is not large in size like the net structure shown in FIG. 3, it can be easily installed near the water surface even if the rope is somewhat heavy and rigid. On the other hand, the net-like structure shown in Figure 3 does not require much strength because it is not subjected to large pressure, so it can be relatively low-strength and lightweight.Therefore, it is inexpensive, easy to construct, and can be easily applied to soft ground. It is something that can be used.

According to the present invention, the network structure shown in FIG.
It is extremely easy to construct because it can be constructed by dividing it into 50m long units and sequentially tying the fastening rope to a very strong rope or installation rope such as a chain or belt. It is.

The partition weir according to the method of the present invention can be used for purposes other than building partition banks using waste as shown in Figure 2 A and B.

Figures 5 and 6 show other embodiments of the present invention, in which 21 is a landfill, 22 is a partition bank,
Reference numeral 23 indicates a waste division weir according to the method of the present invention, 24 its net, 25 its float, 26 the water surface, 27 the water bottom, and 28 the waste.

In this case, as shown in Figure 6, a dump truck 29 or the like runs on the upper part of the partition dike 22 to dispose of garbage, and the garbage compartment weir 23 is used as a partition structure for garbage and other waste to prevent the spread of floating materials. It is used.

[Brief explanation of the drawing]

Figure 1 is a plan view of the landfill site, Figures 2A and 2B are cross-sectional views showing the outline of the surrounding weir constructed by the method of the present invention, and Figure 3 is a side view of the network structure used in the method of the present invention. Fig. 4 is a plan view showing a state in which the installation rope and the fastening rope are connected, Fig. 5 is a plan view of a landfill site according to another embodiment of the present invention, and Fig. 6 is a sectional view showing the partition bank and partition weir. It is. 2... Rope for installation, 3... Net body, 5... Float, 7... Rope for fastening.

Claims (1)

[Claims] 1 Strong installation ropes are strung at specified intervals near the water surface of the water area where the encircling weir is to be constructed, to prevent the passage of garbage and other discarded material, but to allow water to pass freely through metal, plastic, and textiles. Attach a float to a net consisting of a net, suspend this net at a height of 0.1 to 2 m above the water surface and at a depth of 0.5 to 5 m below the water surface, and attach the fastening rope fixed to this net to the installation rope. A method of reclamation using dumped materials, characterized in that the materials are tied at intervals of 5 to 50 meters, and the materials are dumped inside.