PROBLEM TO BE SOLVED: To provide a method for manufacturing a cement cured body for easily building a large-sized structure which creates best-suited environments for the proliferation of the underwater life and is of a high strength. SOLUTION: The base and side of a form 2 are internally lined with a porous cement cured body 1 of a specified shape. Next, a ready mixed concrete is deposited in the form 2 and is cured to a specified strength to form a concrete part 3. After that, the form 2 is released to obtain a composite cement cured body 4 which is composed of the porous cement cured body 1 having a continuous void formed internally and the concrete part 3, joined together. The part near the surface of the composite cement cured body 4 is formed of the porous cement cured body 1, so that the best-suited environments for the proliferation of the underwater life can be created. In addition, as most of the composite cement cured body 4 is formed of concrete, it is possible to build a large-sized structure of a high strength.

Method for manufacturing composite cement cured body

PROBLEM TO BE SOLVED: To provide a method for regenerating and restoring submerged plants in a shallow lake or marsh in which declined or extinct submerged plants endemic to a water area are regenerated or restored and improvement of water quality in the water area is performed. SOLUTION: In a shallow lake or marsh in which at least submerged plant colony AA peculiar to the water area is declined or disappears and water pollution state is not solved even if inflow of a pollutant decreases, the declined or extinct submerged plant colony AA peculiar to the water area is regenerated or restored and water quality of the water area is improved by providing turbidity-lowering means 1, 11 and 21 by which transmitted beam reaches water bottom in the water area in predetermined state or collecting buried seeds from the water area. COPYRIGHT: (C)2007,JPO&INPIT

Method for regenerating and restoring submerged plant in shallow lake or marsh

PURPOSE: A vegetation revetment block for water purification is provided to delay the flowing out of the moisture of the vegetation soil layer in rain fall and improve the growing environment of the plant. CONSTITUTION: A vegetation revetment block(B) for water purification comprises a block body(10), a main masonry mud wall, a sub- masonry mud wall, a plurality of through-holes, and a slope transition part. A beveled edge is formed at the four edge parts of the block body. A linking ring is fixed on the slope edge of the block body. The lower part of the block body is formed of a waterrepellent concrete(15). The upper part excluding the waterrepellent concrete of the block body is classified into porous concrete(17). The main masonry mud wall is protruded from the upper end center of the block body. A water-feeding hole passes through the upper and lower surfaces. The vegetation part is formed between the main masonry mud wall and the sub masonry mud wall.

Vegetation revetment block for water purification

The invention discloses a fry polyculture slope circulating water giant salamander culture pond which comprises a shallow pond, a cutoff platform, and a giant salamander pond, wherein the shallow pond is arranged in an upper part space and used for culturing fries; the cutoff platform is arranged on one side of the shallow pond; the giant salamander pond is positioned in a lower part space, corresponds to the other side of the cutoff platform, and is provided with a gentle slope; and a pipeline is arranged at the bottom of the giant salamander pond, and communicated with the bottom of the shallow pond by a pump. The culture pond preferably simulates a practical environment where giant salamanders grow and inhabit; with the adoption of the cutoff platform, a water flow forms a cascade at the upper part of the cutoff platform to fall down, and a gentle slope water flow is formed in the giant salamander pond to simulate a rivulet; a blow-off pipe of the giant salamander pond can maintain the cleanness in the pond effectively; and the lower water flow is pumped to the upside and recycles by the pump.

Fry polyculture slope circulating water giant salamander culture pond

PURPOSE: A method of manufacturing a protective block is provided to improve water purifying capability, thereby providing an environment where water plants and fish can live safely CONSTITUTION: A method of manufacturing a riverside protective block comprises the following steps Materials of an upper part(110) of a block contacting the surface of water is comprised of fine sand 65~90weight%, charcoal powder 1~5weight%, cement 15~30weight% and illite 05~3 weight% The first mortar is made by mixing the materials Materials of a lower part(120) of the block supported by a river side is comprised of recycle aggregate 40~60weight%, cement 15~30weight%, sand 20~40weight% and rock dust 5~10weight% The second mortar is made by mixing the materials

Manufacturing method of a protective block and its construction method

PROBLEM TO BE SOLVED: To constitute a natural environment, by laying a number of blocks in a river bed or in the area from the river bed to a slope and connecting them to form a revetment and providing habitats for aquatic creatures in the water and growing plants on vegetation bases in the land. SOLUTION: Either upper or lower face is made with ordinary concrete 12, and the other face is made with porous concrete 11 in a cubic block 10 having an arbitrary shape. Or a box-shaped body is formed with porous concrete 11 with a certain thickness and ordinary concrete is filled in the box and cured integrally, or the block 10 is formed with ordinary concrete 12 and porous concrete boards 11 are stuck on the external faces to integrally form the block 10. A number of one kind of these blocks are laid on a river bed or from the river bed to a slope and connected to each other to form habitats for aquatic creatures in the water and grow plants as vegetation bases in the land.

Sakai Koji

Papers

Block for preserving ecological system and execution method therefor