JPH02274684A - Mooring anchor settling method - Google Patents
Mooring anchor settling methodInfo
- Publication number
- JPH02274684A JPH02274684A JP1092986A JP9298689A JPH02274684A JP H02274684 A JPH02274684 A JP H02274684A JP 1092986 A JP1092986 A JP 1092986A JP 9298689 A JP9298689 A JP 9298689A JP H02274684 A JPH02274684 A JP H02274684A
- Authority
- JP
- Japan
- Prior art keywords
- water
- mooring chain
- falling
- mooring
- chain
- 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
- 238000000034 method Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004062 sedimentation Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 229920003002 synthetic resin Polymers 0.000 abstract description 3
- 239000000057 synthetic resin Substances 0.000 abstract description 3
- 239000002023 wood Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Revetment (AREA)
- Artificial Fish Reefs (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、主として大水深域において、浮消波堤や浮魚
礁等の浮遊楕遺物を水底に係留するための係留アンカー
を沈設するための係留アンカーの沈設方法に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is mainly used in deep water areas to sink mooring anchors for mooring floating elliptical artifacts such as floating wave banks and floating fish reefs to the bottom of the water. Concerning a method for sinking a mooring anchor.
（従来の技術）
従来、この種の係留アンカーとしては、大型のコンクリ
ートブロックが使用され、これに水面もしくは水中の浮
遊物楕物を繋ぎとめるものとして鋼製のチェーンが使用
されている。この係留アンカーの沈設に際しては、従来
船上にて係留チェーンの一端をアンカー本体に連結し、
係留チェーンと共にアンカー本体を水中に投下する方法
が採られている。(Prior Art) Conventionally, a large concrete block has been used as this type of mooring anchor, and a steel chain has been used to connect floating objects on the water surface or in the water to the concrete block. When sinking this mooring anchor, conventionally one end of the mooring chain is connected to the anchor body on board the ship.
A method is adopted in which the anchor body is dropped into the water together with the mooring chain.
（発明が解決しようとする問題点）
一般に物体の水中落下速度は、重力、物体と水との比重
差、及び形状に起因する抗力によって定まる。従って従
来のようにコンクリートブロックからなるアンカー本体
と、鋼製の１系留チエーンとをそのまま同時に水中に投
下すると、（糸質チェーンの方が沈下速度が早く、この
ため沈降中の係留チェーンになるみができ、からみや、
もつれが生じ、最悪の場合には係留チェーンが切断され
るという問題がある。(Problems to be Solved by the Invention) Generally, the speed at which an object falls into water is determined by gravity, the difference in specific gravity between the object and water, and the drag force caused by the shape. Therefore, if the anchor body made of a concrete block and the single-strand steel mooring chain are dropped into water at the same time as in the past, (the stringy chain sinks at a faster rate), it will become a sinking mooring chain. Can be done, Karamiya,
The problem is that entanglements can occur, and in the worst case, the mooring chain can break.
本発明は、上述の如き問題にかんがみ係留アンカーを自
由落下によって、沈降させた場合にも係留チェーンがア
ンカー本体より遅く、しかも上下に張った状態で沈降さ
れる係留アンカーの沈設方法の提供を目的としたもので
ある。In view of the above-mentioned problems, an object of the present invention is to provide a method for sinking a mooring anchor in which, even when the mooring chain is lowered by free fall, the mooring chain is lower than the anchor body and is lowered in a vertically tensioned state. That is.
（課題を解決するための手段）
上述の如き従来の問題を解決し、所期の目的を達成する
ための本発明の係留アンカーの沈設方法の特徴はアンカ
ー本体に係留チェーンの一端を固定し、該係留チェーン
に対し一定間隔毎に沈降抵抗体を取り付けた状態で、該
アンカー本体を係留チェーンと共に水中に投下し、前記
沈降抵抗体によりチェーンの沈降速度を遅らせつつ沈降
させることに存する。(Means for Solving the Problems) The feature of the mooring anchor sinking method of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose is to fix one end of the mooring chain to the anchor body, The anchor body is dropped into water together with the mooring chain with settling resistors attached to the mooring chain at regular intervals, and the settling resistors slow down the sinking speed of the chain while causing it to sink.
（作用）
この沈設方法では、アンカー本体を水中に投下すると、
これとともに係留チェーンも順次水中に引き込まれつつ
自由沈降される。このとき沈降抵抗体によって、係留チ
ェーンの沈降速度が抑制される。このためアンカー本体
が最下部に位置し、係留チェーンは直線状に張った状態
にて沈降する。(Function) In this sinking method, when the anchor body is dropped into the water,
At the same time, the mooring chain is also sequentially drawn into the water and allowed to freely settle. At this time, the sedimentation resistor suppresses the sedimentation speed of the mooring chain. Therefore, the anchor body is located at the lowest position, and the mooring chain sinks in a straight and stretched state.
（実施例） 次に本発明の実施の一例を図面について説明する。(Example) Next, an example of implementation of the present invention will be described with reference to the drawings.
図において１は作業船であり、２は作業船１上から投下
されたコンクリート製のアンカー本体、３はアンカー本
体２の上面に一端を連結した鋼製の係留チェーンである
。In the figure, 1 is a work boat, 2 is a concrete anchor body dropped from above the work boat 1, and 3 is a steel mooring chain with one end connected to the upper surface of the anchor body 2.
このアンカー本体２及び係留チェーン３を作業船１上よ
り水中に投下して沈設する。投下に先立ち係留チェーン
３に一定間隔毎に沈降抵抗体を取り付けておく、この沈
降抵抗体は、−例として第２図に示すように、金属板か
らなる抵抗板４をもって構成し、その中央にチェーン貫
通孔５をあけ、これに係留チェーン３を通し、下面に固
着した止め金６．６・・・・・・にワイヤー７．７・・
・・・・の一端を固定し、このワイヤー７．７・・・・
・・のａＳを係留チェーン３に固定し、沈降時に水の抵
抗がかかることにより、抵抗板４に対して係留チェーン
３が垂直になるようにしておく。The anchor body 2 and mooring chain 3 are dropped into the water from the work boat 1 and submerged. Prior to dropping, sinking resistors are attached to the mooring chain 3 at regular intervals.These sinking resistors consist of a resistor plate 4 made of a metal plate, as shown in FIG. Drill a chain through hole 5, pass the mooring chain 3 through it, and wire 7.7 to the stopper 6.6 fixed to the bottom surface.
Fix one end of this wire 7.7...
The aS of... is fixed to the mooring chain 3, and the mooring chain 3 is made perpendicular to the resistance plate 4 due to the resistance of water when it sinks.
なお、この抵抗板４は、アンカー本体２の沈降速度より
係留チェーン３の沈降が遅くなるようにその大きさ及び
浮力をあらかじめ選定しておく。The size and buoyancy of the resistance plate 4 are selected in advance so that the mooring chain 3 sinks more slowly than the anchor body 2.
このようにして抵抗板４を取り付けた状態で、アンカー
本体２から順に水中に投下すると、係留チェーン３は、
抵抗板４による水の抵抗によって沈降が抑制され、アン
カー本体２の沈降力によって引き込まれる状態となり、
上下に直線状に張った状態で水底に到る。With the resistance plate 4 attached in this way, when dropping the anchor body 2 into the water in order, the mooring chain 3 will be
The water resistance caused by the resistance plate 4 suppresses the sinking, and the anchor body 2 becomes pulled in by the sinking force.
It reaches the bottom of the water in a straight line vertically.
尚、上述の実施では、沈降抵抗体として金属板を使用し
た例を示しているが、木製、合成樹脂製等の他の材質で
もよく、また、発泡合成樹脂等の浮力の大きいものをチ
ェーンに固定して使用してもよいものである。また、浮
力及び形状を任意に設定し、必要な沈降抑制作用を設定
できる。In addition, in the above implementation, an example is shown in which a metal plate is used as the sinking resistor, but other materials such as wood or synthetic resin may be used, and a material with high buoyancy such as foamed synthetic resin may be used for the chain. It can be used fixedly. In addition, the buoyancy and shape can be set arbitrarily, and the necessary sedimentation suppression effect can be set.
（発明の効果）
上述したように本発明の係留アンカーの沈設方法におい
ては、係留チェーンに沈降抵抗体を取り付けて水中に投
下するようにしたことにより、係留チェーンの沈降が抑
制され、常にアンカー本体に引き込まれる状態で沈降さ
れることとなり、沈降中には係留チェーンに、たるみや
、もつれが生じなくなったものである。(Effect of the invention) As described above, in the mooring anchor sinking method of the present invention, by attaching a settling resistor to the mooring chain and dropping it into the water, the settling of the mooring chain is suppressed, and the anchor body is always During the descent, the mooring chain does not become sagging or tangled.
図面は本発明の実施例を示すもので、第１図は投下状態
の側面図、第２図は沈降抵抗体の一例の斜視図である。
１・・・・・・作業船、２・・・・・・アンカー本体、
３・・・・・・係留チェーン、４・・・・・・抵抗板、
５・・・・・・チェーン貫通孔、６・旧・・止め金、７
・・・・・・ワイヤーThe drawings show an embodiment of the present invention, and FIG. 1 is a side view in a dropped state, and FIG. 2 is a perspective view of an example of a sinking resistor. 1... Work boat, 2... Anchor body,
3... Mooring chain, 4... Resistance plate,
5...Chain through hole, 6.Old...clasp, 7
······wire
Claims (1)
ェーンに対し一定間隔毎に沈降抵抗体を取り付けた状態
で、該アンカー本体を係留チェーンと共に水中に投下し
、前記沈降抵抗体によりチェーンの沈降速度を遅らせつ
つ沈降させることを特徴としてなる係留アンカーの沈設
方法。One end of the mooring chain is fixed to the anchor body, and with sedimentation resistors attached to the mooring chain at regular intervals, the anchor body is dropped into water together with the mooring chain, and the sedimentation resistors reduce the sinking speed of the chain. A method for sinking a mooring anchor, which is characterized by sinking while delaying the settling of mooring anchors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1092986A JPH02274684A (en) | 1989-04-14 | 1989-04-14 | Mooring anchor settling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1092986A JPH02274684A (en) | 1989-04-14 | 1989-04-14 | Mooring anchor settling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02274684A true JPH02274684A (en) | 1990-11-08 |
Family
ID=14069696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1092986A Pending JPH02274684A (en) | 1989-04-14 | 1989-04-14 | Mooring anchor settling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02274684A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62292586A (en) * | 1986-06-11 | 1987-12-19 | Zeniraito V:Kk | Method of submerging mooring device for floating light |
-
1989
- 1989-04-14 JP JP1092986A patent/JPH02274684A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62292586A (en) * | 1986-06-11 | 1987-12-19 | Zeniraito V:Kk | Method of submerging mooring device for floating light |
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