JPH04146313A - Bottom material movement controlling artificial seaweed device - Google Patents
Bottom material movement controlling artificial seaweed deviceInfo
- Publication number
- JPH04146313A JPH04146313A JP26928290A JP26928290A JPH04146313A JP H04146313 A JPH04146313 A JP H04146313A JP 26928290 A JP26928290 A JP 26928290A JP 26928290 A JP26928290 A JP 26928290A JP H04146313 A JPH04146313 A JP H04146313A
- Authority
- JP
- Japan
- Prior art keywords
- base
- waves
- sea
- thalluses
- large number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241001474374 Blennius Species 0.000 title abstract description 9
- 239000000463 material Substances 0.000 title abstract description 5
- 239000002861 polymer material Substances 0.000 claims abstract 2
- 229920001059 synthetic polymer Polymers 0.000 claims abstract 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 240000007058 Halophila ovalis Species 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 230000003628 erosive effect Effects 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 241000544058 Halophila Species 0.000 description 10
- 239000013049 sediment Substances 0.000 description 10
- 238000009991 scouring Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 241000282887 Suidae Species 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Landscapes
- Revetment (AREA)
Abstract
Description
【発明の詳細な説明】
海底、湖底、河豚の底質の移動を制御するための人工海
草装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an artificial seaweed device for controlling the movement of bottom sediments on the seabed, lake bottom, and river pigs.
（従来の技術及び発明が解決しようとする課題）海岸や
河川、湖などでは波や水流によって底質（底部の砂等）
が移動し、侵食や洗掘がおこることになる。(Problems to be solved by conventional techniques and inventions) On beaches, rivers, lakes, etc., waves and water currents cause sediment (sand on the bottom, etc.)
will move, causing erosion and scouring.
そこで、従来は、波浪の制御や侵食防止対策として、護
岸、防波堤、離岸堤或は？ｌ堤など各種の水中構造物の
施設がなされてきた。しかし、それらの構造物では基礎
洗掘や底質の吸い出しがおこることにより、水中構造物
の沈下さらには転倒を引き起すおそれがある。そして、
離岸堤のように海面上に突出する構造物では景観を著し
く損ね、また、潜堤は堤内の水位上昇を伴い堤外へ向う
流速が太き（なり、底質を堤外へ運び去るという欠点が
ある。Therefore, in the past, sea walls, breakwaters, off-shore dikes, or other measures were taken to control waves and prevent erosion. A variety of underwater structures such as dikes have been constructed. However, in these structures, foundation scouring and bottom sediments are sucked out, which may cause the underwater structures to sink or even topple over. and,
Structures that protrude above the sea surface, such as offshore levees, significantly impair the scenery, and submerged levees have the disadvantage of increasing the water level inside the levee and increasing the velocity of the flow toward the outside of the levee, which carries away the sediment outside the levee. be.
上記の基礎洗掘への対策としては、従来、基礎と隣接し
た水底にゴムマットやグラベルマット等を敷設すること
が行われてきたが、十分な効果があげられないという状
態である。As a countermeasure to the above-mentioned foundation scouring, conventional methods have been to lay rubber mats, gravel mats, etc. on the water bottom adjacent to the foundation, but this has not been sufficiently effective.
本発明は、上記のような事情に鑑み、波や流れによる底
質移動を制御し、洗掘、侵食を防止するとともに、洗掘
或は侵食されて流出した底質の回復を図るための人工海
草装置を提供しようとするものである。In view of the above circumstances, the present invention has been developed to control the movement of sediment due to waves and currents, to prevent scouring and erosion, and to recover the sediment that has been washed away due to scouring or erosion. The aim is to provide a seaweed device.
本人工海草装置は、波や流れの条件、使用目的にあわせ
て単体または複数個を連結して使用する。This artificial seagrass device can be used singly or in combination, depending on wave and current conditions and purpose of use.
（課題を解決するための手段）
上記の目的を達成するための本発明の構成について、実
施例に対応する第１図を参照して説明すると、本発明は
、筋材２，２を格子状に結合して形成した基盤１に、合
成高分子材料等を用いて形成した葉状体３．３の多数を
間隔をおいて取付けるとともに、基盤ｌの適所に重錘６
を設けたアンカー４を取付けたことを特徴とするもので
ある。(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to FIG. 1 corresponding to the embodiment. A large number of leaves 3.3 made of a synthetic polymeric material or the like are attached at intervals to the base 1 formed by bonding to the base 1, and a weight 6 is placed at an appropriate position on the base 1.
This is characterized by the fact that an anchor 4 is attached thereto.
（作用）
上記構成の人工海草装置を波や流れによって変化する海
底、湖底、河床等の水底面に設置すると、波の水粒子速
度、流れの流速が変化して、底質（砂等）が人工海草装
置内やその付近に堆積し、或は岸側に移送されることに
なる。(Function) When the artificial seagrass device with the above configuration is installed on the bottom surface of the seabed, lake bed, riverbed, etc., which changes due to waves and currents, the velocity of water particles of the waves and the velocity of the current change, and the bottom sediment (sand, etc.) It will be deposited in or near the artificial seagrass device or transported to the shore.
（実施例）
以下、本発明の実施例について図面を参照して説明する
。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図において、１は基盤で鋼棒等の筋材２゜２を格子
状に結合し全体として平面四角形に形成されており、こ
の基盤１には、合成高分子材料を用いて縦長に形成した
葉状体３の多数が、適宜な間隔をおき、その基端部を鋼
棒２，２に取付けて設けられ人工海草装ｆｌＡが形成さ
れている。また、上記基盤１の適所、例えば四隅部には
鎖等５の先端部に重錘６を設けたアンカー４．４が取付
けられている。そして、上記本考案の人工海草装置は、
その基盤１を砂質などの水底面または水底面下７に置き
、アンカー４゜４により固定設置するのである。In Fig. 1, reference numeral 1 denotes a base, which is formed by connecting reinforcing materials 2゜2 such as steel rods in a lattice shape, and is formed into a rectangular plane as a whole. A large number of fronds 3 are provided at appropriate intervals and their base ends are attached to steel rods 2, 2 to form an artificial seaweed arrangement flA. Furthermore, anchors 4.4 each having a weight 6 at the tip of a chain or the like 5 are attached to appropriate positions of the base 1, for example, at the four corners. The artificial seagrass device of the present invention is as follows:
The base 1 is placed on a sandy water bottom surface or below the water bottom surface 7, and fixedly installed using anchors 4.4.
上記基盤１は、その上下両側へ底質の流動が自在である
ことが重要であり、また基盤１の形態保持ができるよう
な剛性が必要であるとともに、底質の移動に対する抵抗
を少なくするため、各筋材２の断面は所要の剛性を損な
わない程度にできるだけ小さくするのが望ましい。また
、葉状体３は波や流れによって描動自在で、容易に破断
しない強度を有することと耐腐食性の高いことが必要で
ある。It is important for the above-mentioned base 1 to allow bottom sediment to flow freely both above and below, and it also needs to have enough rigidity to maintain the shape of the base 1, as well as to reduce resistance to the movement of bottom sediment. It is desirable that the cross section of each reinforcement 2 be as small as possible without impairing the required rigidity. Further, the leaf-shaped body 3 needs to be movable by waves and currents, have strength so as not to break easily, and have high corrosion resistance.
本発明の人工海草装置を水底面部に設置すれば、第２図
に示すように、波８がここを通過すると、葉状体３．３
が動揺して底面付近における波の進行方向の水粒子速度
を弱め或は強め、これと逆向きの速度を弱めることにな
る。また、流れに対しては流速を弱めることになる。そ
れによって、水底付近に浮遊した底質は波の進行方向に
移動し、またはその場に堆積して、第３図に示すように
、人工海草装置Ａがない場合の水底面９が点線で示すよ
うな水底面１０のように変化することになる。If the artificial seaweed device of the present invention is installed on the bottom surface of the water, as shown in FIG.
This oscillates, weakening or increasing the velocity of water particles near the bottom in the direction of wave propagation, and weakening the velocity in the opposite direction. Additionally, the flow velocity will be weakened. As a result, the sediment floating near the water bottom moves in the direction of wave propagation or is deposited on the spot, and as shown in Figure 3, the water bottom surface 9 without the artificial seagrass device A is shown by the dotted line. The bottom surface 10 of the water changes as shown below.
本発明人工海草装置は、第４図に示すように、護岸や離
岸堤などの水中構造物１１に対しては、そ゛づ基礎の洗
堀部１２に設置すれば、流失した砂が自然に戻り、点線
で示すような水底面１０に回復される。また、第５図に
示すような海岸付近の水底面部に人工海草装置１Ａを設
置すれば、いままで複雑に変化していた水底面９が点線
で示すような水底面１０に変化し、砂浜１３が減少して
いる海岸では侵食が止まりさらには砂浜が回復すること
になる。そして、これらの各現象は多（の実験により確
認されているところである。As shown in Fig. 4, the artificial seagrass device of the present invention can be installed in the scour section 12 of the foundation of an underwater structure 11 such as a seawall or breakwater, so that washed away sand will return naturally. , the water is restored to the bottom surface 10 as shown by the dotted line. Furthermore, if the artificial seagrass device 1A is installed on the water bottom near the coast as shown in FIG. On beaches where sand is decreasing, erosion will stop and the beaches will recover. Each of these phenomena has been confirmed through numerous experiments.
（発明の効果）
以上説明したように、本発明の人工海草装置は、筋材を
格子状に結合して形成した基盤に、合成高分子材料等を
用いて形成した葉状体の多数を間隔をおいて取付けると
ともに、基盤の適所に重錘を設けたアンカーを取付けた
構成のものであるから、これを海底、湖底、河床等の水
底面に設置すれば、ここを通過する波、水流により葉状
体が動揺して、水底付近における水粒子速度を変化させ
、水底付近に浮遊した砂は波の進行方向に移動し、或は
その場に堆積することになって、全体に平坦化する傾向
になるとともに、洗堀や侵食が防止され、また、その回
復が自然に行われることになる。(Effects of the Invention) As explained above, the artificial seaweed device of the present invention has a large number of fronds formed using synthetic polymeric material etc. arranged at intervals on a base formed by bonding muscles in a lattice shape. It is constructed by attaching an anchor with a weight to the appropriate place on the base, so if it is installed on the bottom surface of the seabed, lake bed, riverbed, etc., it will be able to be attached to the leaf by waves and water currents passing through it. As the body sways, the velocity of water particles near the bottom changes, and the sand suspended near the bottom moves in the direction of wave travel or is deposited there, tending to become flat as a whole. At the same time, scouring and erosion will be prevented, and recovery will occur naturally.
そして、本発明人工海草装置は、基盤は剛性が大である
とともに、重錘付のアンカーによって水底部に設置され
るので、多年にわたり安定して所定位置に保たれ効果を
奏することになる。The artificial seagrass device of the present invention has a highly rigid base and is installed on the bottom of the water by means of an anchor with a weight, so that it can be stably maintained in a predetermined position for many years and is effective.
第１図は本発明の一実施例を示す人工海草装置を水底部
に設置したところを示す斜視図、第２図は波による葉状
体の動揺状態を示す側面図、第３図は人工海草装置設置
による水底面の変化説明図、第４図は人工海草装置を水
中構造物基礎の洗堀部に設置した場合の説明図、第５図
は人工海草Ｈ厘を海岸侵食防止に用いた場合の説明図で
ある。Fig. 1 is a perspective view showing an artificial seaweed device according to an embodiment of the present invention installed on the bottom of the water, Fig. 2 is a side view showing how the fronds are shaken by waves, and Fig. 3 is the artificial seaweed device. Figure 4 is an illustration of changes in the water bottom due to installation. Figure 4 is an illustration of an artificial seagrass device installed in the scour area of the foundation of an underwater structure. Figure 5 is an illustration of an artificial seagrass device used to prevent coastal erosion. It is a diagram.
Claims (1)
料等を用いて形成した葉状体の多数を間隔をおいて取付
けるとともに、基盤の適所に重錘を設けたアンカーを取
付けたことを特徴とする、低質移動制御人工海草装置。A large number of lobes made of synthetic polymer materials, etc. are attached at intervals to a base formed by connecting reinforcements in a lattice pattern, and anchors with weights are attached at appropriate locations on the base. A low-quality movement-controlled artificial seagrass device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26928290A JPH04146313A (en) | 1990-10-05 | 1990-10-05 | Bottom material movement controlling artificial seaweed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26928290A JPH04146313A (en) | 1990-10-05 | 1990-10-05 | Bottom material movement controlling artificial seaweed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04146313A true JPH04146313A (en) | 1992-05-20 |
Family
ID=17470187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26928290A Pending JPH04146313A (en) | 1990-10-05 | 1990-10-05 | Bottom material movement controlling artificial seaweed device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04146313A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325569B1 (en) * | 1999-11-05 | 2001-12-04 | Rodolphe Streichenberger | Cultivating kelp and mussels together |
| FR2987930A1 (en) * | 2012-03-06 | 2013-09-13 | Fabrice Schnoller | Noise attenuation device for attenuation of underwater noises during construction of offshore oil rig at sea, has floating profiles made of plastic and/or wood with envelope supporting foam core that absorbs acoustic waves at sea |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48104333A (en) * | 1972-04-14 | 1973-12-27 |
-
1990
- 1990-10-05 JP JP26928290A patent/JPH04146313A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48104333A (en) * | 1972-04-14 | 1973-12-27 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325569B1 (en) * | 1999-11-05 | 2001-12-04 | Rodolphe Streichenberger | Cultivating kelp and mussels together |
| FR2987930A1 (en) * | 2012-03-06 | 2013-09-13 | Fabrice Schnoller | Noise attenuation device for attenuation of underwater noises during construction of offshore oil rig at sea, has floating profiles made of plastic and/or wood with envelope supporting foam core that absorbs acoustic waves at sea |
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