JPH0434110A - Burying method by honeycomb block - Google Patents

Abstract

PURPOSE:To reduce the cost for construction by sinking honeycomb blocks while piling in the inside of a levee constructed on the off-land border part of a buried section, and laying a sheet on the blocks to form an artificial ground. CONSTITUTION:A levee 1 is constructed on a border part of a offshore buried section in a buried sea area. Honeycomb blocks 2 molded into a honeycomb form are sunk in piled state in the buried section in the inside of the levee 1, and earth is laid on a sheet 3' laid on the blocks 2 to create an artificial ground 4. The levee 1 is formed into water permeable structure, whereby the sea water is penetrated into the blocks 2, and water is purified through the formation of films by microorganisms. Water contamination thus can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a construction method for reclaiming a part of a water body such as the sea, a lake, a river, etc. using honeycomb-shaped blocks.

[Conventional technology] Traditionally, land reclamation on the coast, etc. was carried out after constructing a cofferdam offshore.
The reclaimed ground is created by dumping the reclaimed soil at sea using a sand carrier or by dredging, and then some kind of soft ground treatment method (e.g. vertical drain method) is applied to stabilize the reclaimed ground. is.

[Problems to be solved by the invention] However, the above-mentioned conventional land reclamation methods have serious problems such as pollution of sea areas during sea dumping or dredging, and compensation for fisheries. There were problems such as the need for support from the public.

The present invention was made in order to solve the above-mentioned conventional problems, and its objectives are not only to shorten the construction period and reduce the cost per unit (but also to create a honeycomb structure that does not cause water pollution). The objective is to provide a reclamation method using shaped blocks.

[! A method for solving problem 1] The reclamation method using honeycomb-shaped blocks of the present invention is to construct an embankment at the offshore boundary of a reclamation area, and deposit honeycomb-shaped blocks in the reclamation area while stacking them. The VF feature is the formation of an artificial ground by laying a sheet on top of the sunken honeycomb-shaped blocks.

The embankment may have a permeable structure.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

First, as shown in Figure 1, a dike 1 is constructed at the boundary of the reclaimed area offshore of the reclaimed sea area.

Subsequently, the honeycomb-shaped blocks 2 are deposited in a stacked state in the reclamation area of the embankment 1.

The honeycomb-shaped block 2, as shown in FIG.
A large number of hexagonal prism-shaped through holes in the thickness direction, that is, in the vertical direction,
That is, it is a honeycomb-shaped rigid structure formed of a synthetic resin non-woven material such as geotextile so as to form a through honeycomb chamber 2a, especially in the thickness direction (
It has sufficient compressive strength in the vertical direction) and a large volume of voids. Therefore, there is no fear that the honeycomb-shaped block 2 will float on water unlike Styrofoam.

Incidentally, the honeycomb-shaped block 2 may be molded from hard plastic.

The honeycomb-shaped blocks 2 are molded into an appropriate size according to the convenience of manufacturing, transportation, construction, etc., and are stacked and bonded at a landfill site. As shown in FIG. 3, this stacking connection method is carried out, for example, by fitting connection protrusions 3a protruding from the top and bottom of the connection board 3 into through-hole honeycomb chambers 2a of the top and bottom honeycomb-shaped blocks 2.2.

After the honeycomb-shaped block 2 has been completely deposited, a sheet 3' is laid thereon.

Subsequently, an embankment is placed on top of the sheet 3' to create an artificial ground 4. Water collection basins 5 are installed at appropriate positions on the artificial ground 4 to treat wastewater. Incidentally, the drainage water from the artificial ground 4 may be allowed to permeate into the interior of the honeycomb-shaped block 2, or may be discharged to the sea area outside the embankment 1.

The embankment 1 is made water permeable by embedding crushed stones in honeycomb-shaped blocks and stacking them, so that seawater can enter into the honeycomb-shaped blocks 2 of the artificial ground. When left in the honeycomb chamber 2a, a microbial film is formed inside the honeycomb chamber 2a, exerting a purifying effect.

[Effect of the invention 1 (1) Reclaimed ground can be created without polluting the ocean or other aquatic environment, and there is no risk of problems such as fishing compensation.

(2) By allowing seawater or the like to enter the honeycomb-shaped block, a biofilm is formed in the honeycomb chamber, and the water can be purified by the action of microorganisms.

(3) The ground can be constructed without the need to drain water such as seawater.

(4) There is no need to treat soft ground.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a reclaimed structure constructed using the construction method of the present invention;
The figure is a partial perspective view of a honeycomb-shaped block, and FIG. 3 is an explanatory diagram of connections of the honeycomb-shaped block. Penetrating honeycomb chamber, 3... Connection board, 3a... Connection protrusion, 3'... Sheet, 4... Artificial ground.

Claims (1)

[Claims] 1. An embankment is built at the offshore boundary of an area by reclamation, honeycomb-shaped blocks are piled up and sunk within the reclaimed area, and a sheet is laid on top of the sunken honeycomb-shaped blocks to create an artificial construction. A reclamation method that uses honeycomb-shaped blocks to form the ground. 2. The reclamation method using honeycomb-shaped blocks according to claim 1, wherein the embankment has a permeable structure.