JP2004068272A - Cribbed symbiotic revetment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cribbed symbiotic revetment taking creatures living in respective heights at the ebb and flow of the tide into consideration and expecting a cleaning effect of water supplied into the cribbed blocks, by piling up stepwise or upright cribbed blocks appropriately stuffed with sludge and stones, etc., in front of the front face of the revetment for the tidal zone. <P>SOLUTION: Filter materials such as gravel, sand, etc. are laid on the bottom in the cribbed blocks 5A-5D filled with sludge 4 corresponding to each height of the ebb and flow of the tide and constructed in contact with the front face of the revetment for the tidal zone to prevent the sludge from running off and refuse filtered by the filter materials from flowing into the cribbed blocks, in order to take creatures living in respective heights into consideration. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame type biological symbiotic revetment that creates a habitat for flora and fauna that lives on the waterside by stacking frame-shaped blocks filled with mud and stones mainly in front of a revetment in a tidal zone.
[0002]
[Prior art]
Conventionally, a cascade-shaped structure is continuously arranged in a step-like manner in contact with the front of the seawall, and the inside of the structure is filled with a filling material such as sand, and any one of them is provided depending on the tide level of the water area. For example, Japanese Patent No. 3097720 discloses an invention relating to a construction site such as an artificial sandy beach or a tidal flat where the structure is made to have a depth such that the structure exists at a water surface position.
[0003]
In this case, even if a sandy beach or tidal flat is created in front of the revetment, the water area in contact with the revetment will not be significantly narrowed, and the sand required for the revetment will be small, and it will inhabit the vertical wall of the revetment. Although it is expected to have the effect of eliminating the risk of affecting the inhabited organisms such as attached organisms and fish, water enters the structure only from its surface, so water stagnates inside the structure, Since no purification action is performed, no consideration has been given to creating an environment suitable for the inhabitation of animals and plants.
[0004]
[Problems to be solved by the invention]
According to the present invention, a frame-shaped block corresponding to each height at the time of ebb and flow is stacked in a step-like or upright state in which mud and stones are appropriately packed in front of the seawall of the ebb and flow at each ebb and flow at the time of ebb and flow. In consideration of the biota that inhabits the sea, the effect of purifying the water supplied in the frame-shaped block can be expected, and a framed-type bio-symbiotic revetment that can secure a habitat and hiding place for small animals is provided.
[0005]
[Means for Solving the Problems]
According to the present invention, a filter material such as gravel or sand is laid on the bottom of a frame-shaped block filled with mud corresponding to each height at the time of the tidal zone in contact with the front of the seawall of the tidal zone. To prevent spills of water and to supply water that does not contain debris, etc., filtered by filter material into the frame-shaped block, stairs or uprights, taking into account the biota that inhabits at each height The present invention relates to a frame which is composed of a biomass revetment which is capable of being framed, and in which the stone or the like is appropriately arranged on the surface of the mud filled in the frame-shaped block to secure a habitat for small animals. It consists of seawalls that live together.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a framed-type bio-symbiotic revetment of the present invention will be described with reference to the drawings. FIGS. 1 to 8 are drawings for explaining a revetment of a slope revetment type in one embodiment. 2 is a side sectional view thereof, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an enlarged sectional view of a main part of an arrow A portion of FIG.
[0007]
First, at high tide water level H. W. L. And low tide water level L. W. L. A plurality of frame-like blocks filled with mud 4 corresponding to the height at the time of the ebb, in contact with the front face of a seawall consisting of a superstructure 1 and a plurality of steel sheet piles 2 in the ebb and flow tide zone shown in FIG. For convenience, each frame-shaped block from the first stage to the fourth stage is indicated by 5A, 5B, 5C, 5D) on the foundation rubble 3 at the bottom of the water, so that these frame-shaped blocks 5A to 5D Create a habitat for flora and fauna that lives on the water's edge.
[0008]
Next, as shown in FIG. 3, a filter material 10 such as crushed stone 7 or sand 8 is laid on the bottom of each of the frame-shaped blocks 5A to 5D filled with the mud 4 as described above. 5D is prevented from flowing out, and water filtered by the filter material 10 that does not contain dust or the like is supplied into the frame-shaped blocks 5A to 5D from below.
Further, stones 11 and the like are appropriately arranged on the surface of the mud 4 filled in the frame-shaped blocks 5A to 5D so as to secure a habitat and a hiding place for small animals.
[0009]
The frame-shaped blocks 5A to 5D have a frame-like structure such as reinforced concrete, and have a shape like the first stage in FIG. 4, the second stage in FIG. 5, the third stage in FIG. 6, and the fourth stage in FIG. Low tide water level L. W. L. The first to fourth steps are sequentially piled up on the basic rubble 3 laid to the vicinity, and the filling space 9 is filled in the deep space of each of the frame-shaped blocks 5A, 5B, 5C to fill the gravity type seawall. Although the structure is formed, in the case of this embodiment, the structure is suitable when the installation space in front of the revetment has a relatively large margin.
FIG. 8 is a front view of each of the frame-shaped blocks 5A to 5D of FIGS.
[0010]
Next, Figs. 9 to 15 are drawings for explaining an upright revetment type revetment in another embodiment of the present invention, Fig. 9 is a side sectional view thereof, and Fig. 10 is a front view of Fig. 9. FIG. 11 is an enlarged sectional view of a main part of an arrow B part in FIG. 9, and the same parts as those in the embodiments from FIG. 1 to FIG.
[0011]
In the embodiment of FIGS. 9 and 10, the frame-shaped blocks 5E and 5F are stacked upright on the mound of the foundation rubble 3 or the like, and when there is not enough room in the installation space in front of the seawall. It is a suitable structure.
[0012]
That is, in this embodiment, a large frame-shaped block 5E shown in the plan view of FIG. 12 and the front view thereof shown in FIG. A small frame-shaped block 5F shown in the plan view of FIG. 14 and the front view of FIG. 15 is piled up, and at the bottom of the frame-shaped block 5F, a filling material 9 and a filter material such as crushed stone 7 and sand 8 are laid. The water filtered by the filter material is supplied to the mud 4 in the frame-shaped block 5F from the lower portion of the frame-shaped block 5F when the tide level rises.
[0013]
【The invention's effect】
According to the frame-stowed bio-symbiotic revetment of the present invention described above, by stacking blocks filled with mud and stones in a frame in a stepwise or upright manner, it creates a habitat for flora and fauna that lives on the water's edge, An environment that considers the biota that inhabits at each level of the tidal zone can be formed in front of the seawall.
[0014]
Furthermore, frame-shaped blocks corresponding to the height at the time of the tide are piled up in front of the seawall of the tidal zone, and filter material is laid at the bottom of the block, so when there is tide, water will flow. It is supplied into the block through the filter material from the lower part of the frame-shaped block, which can promote the purification action of water in the block, create an environment where organisms can easily inhabit, and place stones etc. on the surface of mud in the block. By arranging them appropriately, it is possible to secure a habitat and a hiding place for small animals.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of an embodiment of a framed bio-symbiotic seawall according to the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is an enlarged sectional view of a main part of an arrow A part in FIG. 1;
FIG. 4 is a plan view of a first-stage frame-shaped block in FIG. 1;
FIG. 5 is a plan view of a second frame-shaped block shown in FIG. 1;
FIG. 6 is a plan view of a third frame-shaped block shown in FIG. 1;
FIG. 7 is a plan view of a fourth frame-shaped block shown in FIG. 1;
FIG. 8 is a front view of the frame-shaped block shown in FIGS. 4 to 7;
FIG. 9 is a side cross-sectional view of another embodiment of the framed bio-symbiotic revetment of the present invention.
FIG. 10 is a front view of FIG. 9;
11 is an enlarged sectional view of a main part of an arrow B part in FIG. 9;
FIG. 12 is a plan view of the large frame-shaped block shown in FIG. 9;
FIG. 13 is a front view of FIG.
FIG. 14 is a plan view of the small frame-shaped block of FIG. 9;
FIG. 15 is a front view of FIG. 14;
[Explanation of symbols]
4 Mud 5A Frame block 5B Frame block 5C Frame block 5D Frame block 5E Frame block 5F Frame block 8 Sand 10 Filter material 11 Stone

Claims (2)

In contact with the front of the revetment in the tidal zone, filter materials such as gravel, sand, etc. are laid at the bottom of the mud-filled frame-shaped block corresponding to each height at the time of tide to prevent the mud from flowing out At the same time, frame-shaped blocks that allow water that does not contain garbage and the like filtered by the filter material to be supplied into the frame-shaped blocks are stacked stepwise or upright to allow for consideration of the biota that inhabits at each height. Seawalls for symbiosis with creatures. 2. The frame-type living symbiotic seawall according to claim 1, wherein stones or the like are appropriately arranged on the surface of the mud filled in the frame-shaped block to secure a habitat for small animals.

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