JPH09158154A - Method of reclamation construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of the air exposing sections of sheets by covering the whole region of upper exposed sections from sections in the vicinity of at least a sea surface of the surfaces of the sheets covering the whole region of the surface of a back-filling section with protective sheet materials having flexibility and extensibility equal to a sheet material. SOLUTION: Gaisson bodies for revetment are placed continuously on a foundation, back-filling sections 3 are formed on the land side constructed by the continuous caisson bodies for revetment by crushed stone, etc., and sheets 6 are spread all over the whole surface regions of the back-filling sections 3 and the whole surface regions are covered with the sheets 6. The sheet material 7 of the sheets 6 has flexibility and abrasion resistance. The whole regions of exposed sections above the vicinity of at least a sea surface of the surfaces of the sheets 6 are covered with protective sheets 8 having flexibility and extensibility equal to the sheet material 7. Accordingly, the quality of material of the sheets 6 is not deteriorated by ultraviolet rays, etc., even in the execution of works for a prolonged term, and the outflow of soil and sand charged for reclamation by the damage of the sheets 6 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a landfill method for landfilling a certain sea area to construct land.

[0002]

2. Description of the Related Art One of the landfill methods for landfilling a certain sea area is to construct a land as shown in FIG. In this construction method, the revetment box 2 is continuously placed on the foundation 1, and the backfilling section 3 is formed by crushed stone or the like on the land side to be built by the continuous revetment box 2. In order to eliminate large irregularities on the surface of the backfilling portion 3, the surface is leveled by diving.

A sheet 4 of woven fabric or the like is spread and covered over the entire surface of the backfilling portion 3 thus leveled, and landfill sand 5 is put on the sheet 4 to build a land. This sheet is laid so as to prevent landfill soil from leaking through the gaps between the continuous seawall boxes, and is designed so as to be able to cope with the tensile strength of the sheet under the conditions of top load such as earth pressure.

[0004]

According to such a conventional technique, in a large-scale reclamation work, the period from spreading the sheet over the entire surface of the backfilling part to completing the filling of the reclamation soil is 3 years or more. It will be as long as 5 years. As a result, the material spread in the exposed area near and above the sea surface exposed to air causes material deterioration due to the effects of sunlight, etc., and does not maintain the required strength when the landfill is thrown in. An accident occurs in which it is damaged by the impact of.

Therefore, it has been attempted to protect by applying a paint that avoids ultraviolet rays, but the effect is not durable, repainting is required periodically, and the work is done on a wide area of the sheet surface. It is very laborious, time consuming, costly, and economically unsatisfactory, and in fact, is not sufficiently protected. In addition, damage due to an unexpected impact may occur during long-term construction, and it is completely unprotected against such an impact.

However, when the sheet is damaged in this manner, the landfill sand flows out through the gap and leaks through the gap between the revetment boxes.

[0007]

Therefore, according to the present invention, a revetment box is continuously placed on a foundation, and a backfill portion is formed on the land side to be built by the continuous revetment box, Cover the entire surface of this back-filling part with a sheet, and cover the exposed part of the surface of this sheet above at least near the sea surface with a protective sheet material that is as flexible and extensible as the sheet material. The feature is that land is built by filling land reclamation on the backfilling part covered with different sheets.

[0008]

[Operation] According to the above configuration, the sheet is pressed against the back-filling section by charging the landfill and is spread along the irregularities on the surface of the back-filling section. However, if the soil is input for a long time, it is exposed on the sea surface. Since the sheet being covered is covered with a protective sheet material, it is possible to prevent the sheet from deteriorating in strength due to sunlight and also to prevent damage due to unexpected impacts, etc. There is no outflow of landfilled sand from the landfill, and there is no leakage from the continuous gaps in the revetment box through the backfill section.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same parts as those in the above-mentioned conventional technology will be described using the same reference numerals. 1 is an explanatory view showing a usage state of sheets, FIG. 2 is an explanatory view of sheets, FIG. 3 is an explanatory view showing a binding portion of sheets, and FIG. 4 is an explanatory view showing a binding state of sheets.

The bank 2 for revetment is continuously placed on the foundation 1, and the backfilling part 3 is formed by crushed stone or the like on the land side to be built by the continuous bank 2 for revetment. In order to eliminate large irregularities on the surface of the backfilling portion 3, the surface is leveled by diving. When the leveling work is not possible, the following work is performed as it is. In this way, the sheet 6 is spread over the entire surface of the backfilling portion 3 smoothed in this way to cover it.

The sheet material 7 of the sheet 6 has flexibility and abrasion resistance, and is flexible to the same extent as the sheet material 7 so as to cover an upper part from a portion near the sea surface when laid in the back-filling portion. The protective sheet material 8 having elasticity and extensibility is fixed by connecting the end portion of the protective sheet material 8 to a predetermined position of the sheet material 7.
The protective sheet material 8 preferably has a sun ray resistance property, but it does not have to have a special property, for example, a synthetic fiber water permeable sheet or a rubber or synthetic resin impermeable sheet. Good.

Any means may be used to attach the protective sheet 8 to the sheet material 7, for example, as shown in FIG.
As shown in FIG. 5, a connecting piece 10 in which binding holes 9 are opened at regular intervals is attached to the sheet material 7 over the entire width of the sheet, and binding holes are formed at one end of the protective sheet 8 at intervals similar to the intervals of the binding holes 9. After being formed, the sheet material 7 and the protective sheet 8 are integrated by binding the binding holes to each other with the binding string 12, as shown in FIG. Further, the protective sheet 8 may be connected to the sheet material 7 by using a connecting fitting,
Any structure may be used as long as the sheet material 7 and the protective sheet 8 can be connected surely and quickly.

In the above description, the protective sheet 8 is connected to the entire sheet material 7, but the protective sheet 8 is connected to a part of the sheet material 7 in the width direction and partially reinforced. But it's okay. Further, in the above embodiment, the sheet material 7
Although the description has been made with the protective sheet 8 connected to a part of the above, it is of course possible to stack the entire sheet material 7 with the protective sheet 8 to form a double structure.

Further, it is preferable that the connected state is configured such that the connected state is released by the load when the earth and sand are thrown in. The sheet 6 configured as described above is spread over the entire surface of the back-filling portion 3 to cover it, and landfill 5 is put on the sheet 6 to build a land. On this occasion,
Since the sheet material 7 of the sheet 6 is protected from the sun's rays by the protective sheet 8, the material of the sheet is not deteriorated by ultraviolet rays or the like even if it is installed for a long period of time, and the sheet is filled with the landfill sand 5 to prevent the sheet from being deteriorated. While being pressed and moved, it is laid along the irregularities on the surface of the back-filling portion, but it also withstands the friction generated by the movement of the laid pawl at that time and eliminates accidents such as abrasion and damage of the sheet material 7.

Further, when the protective sheet 8 is arranged on the entire surface of the sheet material 7, the damage resistance is further improved against the impact due to the charging of the landfill sand 5.

[0016]

According to the present invention described in detail above, a revetment box is continuously placed on a foundation, and a backfill portion is formed on the land side to be built by the continuous revetment box. , Covering the entire surface of this back-filling part with a sheet, covering at least the entire exposed part above the surface of the sea surface above the sea surface with a protective sheet material having flexibility and extensibility equivalent to the sheet material, By filling landfill sand on the backfill part covered with such a sheet to build the land, the aerial exposed part of the sheet is covered with the protective sheet material even if the landfill construction is prolonged. Even if the sheet is pressed against the back-filling part and spread along the irregularities on the surface of the back-filling part due to the introduction of landfill sand, it will not be deteriorated by the sun's rays It has the effect of eliminating accidents such as abrasion and damage of the sheet due to friction, and since the sheet will not be damaged, there is no outflow of the landfill soil that has been thrown in, so that it will soak into the back-filling section and protect the bank. It does not leak out from the continuous gap of.

Therefore, the built land can be kept stable for a long period of time. Also, it is possible to prevent damage to the seat due to an unexpected impact during long-term construction.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a usage state of a seat.

FIG. 2 is an explanatory view of a sheet

FIG. 3 is an explanatory view showing a binding portion of sheets.

FIG. 4 is an explanatory view showing a binding state of sheets.

FIG. 5 is an explanatory view of a conventional technique.

[Explanation of symbols]

 1 Foundation 2 Box for revetment 3 Backfill part 5 Landfill 6 Sheet 7 Sheet material 8 Protective sheet 9 Bundling hole 10 Connecting piece

Claims (2)

[Claims] 1. A bank for revetment is continuously placed on a foundation, and a backfilling part is formed on the land side to be built by the continuous bank for revetment, and the entire surface of the backfilling part is formed. Covering with a sheet, covering at least the entire exposed area above the surface of the sheet from near the sea surface with a protective sheet material that is as flexible and extensible as the sheet material, and backfilling section covered with such a sheet. A land reclamation method characterized by putting land reclamation on the top to build a land. 2. The landfill method according to claim 1, wherein a protective sheet is laminated on the entire sheet material to form a double structure as a whole.