JP2000092675A - Method for protecting a long body installed on bottom surface of water - Google Patents
Method for protecting a long body installed on bottom surface of waterInfo
- Publication number
- JP2000092675A JP2000092675A JP10257706A JP25770698A JP2000092675A JP 2000092675 A JP2000092675 A JP 2000092675A JP 10257706 A JP10257706 A JP 10257706A JP 25770698 A JP25770698 A JP 25770698A JP 2000092675 A JP2000092675 A JP 2000092675A
- Authority
- JP
- Japan
- Prior art keywords
- bag
- long body
- long
- water
- water bottom
- 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.)
- Granted
Links
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は海底または湖沼・河
川の水底に設置する電力・通信ケーブルや石油・ガス、
給水配管等の長尺体を保護する方法に関し、更に詳しく
は岩盤等の硬質地盤からなる水底地盤や環境保全面から
浚渫、掘削が適さない場合に適用される水底に設置され
た長尺体の保護方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power / communication cable, oil / gas,
Regarding the method of protecting long bodies such as water supply pipes, more specifically, the use of long bodies installed on the water bottom which is applied when dredging or excavation is not suitable for underwater ground consisting of hard ground such as rock mass or environmental protection Regarding protection methods.
【０００２】[0002]
【従来の技術】水底に設置される水底ケーブルや水底配
管等の長尺体は、船舶の投錨による損傷防止、潮流や波
浪による移動防止等の保護対策が必要となる。従来この
対策はあらかじめ定められた計画ルートに沿って浚渫や
トレンチャーによって溝を掘削し、この溝内に設置船か
ら長尺体を繰り出しながら設置した後、溝を埋め戻して
埋設固定して保護するのが一般的であった。2. Description of the Related Art A long body such as a water bottom cable and a water bottom pipe installed on a water bottom requires protection measures such as prevention of damage due to anchoring of a ship and prevention of movement due to tides and waves. Conventionally, this countermeasure is to excavate a ditch by dredging or trencher along a predetermined planned route, install a long body from the installation ship in this ditch, install it, then backfill the ditch and protect it by burying and fixing it Was common.
【０００３】図６に示す先行技術の特開平８―２６９９
２９に開示されているものは、前記のように長尺体３を
掘削溝１０に埋設保護したうえに更に、掘削溝１０の上
部に保護用のグラウトマット１１を敷き詰めて埋め戻し
土が波浪等によって洗堀されるのを防止したものであ
る。通常の水底地盤の場合は前記のような埋設による水
底設置長尺体の保護手段が採用できるが、水底地盤が岩
盤等の硬質地盤の場合は、水底面２に溝１０を掘削する
のが困難となる。このような硬質地盤の水底面２に長尺
体３を設置して保護する手段の従来例には、溝１０の掘
削を行わず、図７に示すように水底面２に設置された長
尺体３の上をグラウトマット１１で覆うものがある。FIG. 6 shows a prior art Japanese Patent Application Laid-Open No. 8-2699.
29, the long body 3 is buried and protected in the excavation groove 10 as described above, and furthermore, a grout mat 11 for protection is spread over the upper part of the excavation groove 10 to bury backfill soil. This prevents the water from being scoured. In the case of ordinary underwater ground, the means for protecting a long body underwater installed by burying as described above can be adopted, but when the underwater ground is hard ground such as rock, it is difficult to excavate the groove 10 in the underwater surface 2. Becomes Conventional examples of such a means for installing and protecting the elongated body 3 on the water bottom surface 2 of the hard ground include a long body installed on the water bottom surface 2 as shown in FIG. There is one that covers the body 3 with a grout mat 11.
【０００４】この保護手段の作業は水底２に長尺体３を
設置した後、ダイバーがグラウトマット１１、つまり空
の袋体を水底まで持ち込み長尺体３の上に並べて被せた
後に海上からホースで送られるモルタルやセメントミル
ク等のグラウト材（充填材）５を袋体内に注入して固化
させるか、または水上でグラウト材５を充填したグラウ
トマット１１を未硬化状態でクレーン船を使用して水底
２に設置した長尺体３の上を覆うように吊り下げて設置
する方法がある。固化したグラウトマット１１は長尺体
３の上部を覆い、かつ重しとして作用し長尺体３を保護
する。[0004] The work of this protection means is to install a long body 3 on the water bottom 2 and then bring the grout mat 11, that is, an empty bag body to the bottom of the water, and place the grout mat 11 on the long body 3. The grout material (filling material) 5 such as mortar or cement milk sent by the above is poured into the bag body and solidified, or the grout mat 11 filled with the grout material 5 on water is uncured using a crane ship. There is a method of suspending the elongate body 3 installed on the water bottom 2 so as to cover the elongate body 3. The solidified grout mat 11 covers the upper part of the elongated body 3 and acts as a weight to protect the elongated body 3.
【０００５】この設置作業にあたり、水底面２の凹部２
ａの不陸部には図８に示すように長尺体３の下側の水底
面２との隙間に前記と同様な多数のグラウトマット１１
を配置して隙間を埋めて長尺体３に局部荷重が生じない
ような対策を施している。[0005] In this installation work, a concave 2
As shown in FIG. 8, a large number of grout mats 11 similar to the above are provided in the gaps between the lower surface of the long body 3 and the water bottom surface 2 in the non-land portion of FIG.
Are arranged so as to fill the gap so that local load does not occur in the elongated body 3.
【０００６】[0006]
【発明が解決しようとする課題】前述のような硬質地盤
からなる水底面２に長尺体３を固定設置する従来技術で
は、空の袋体を水底まで持ち込み長尺体３の上に並べて
被せ、充填材５を袋体内に注入（充填）する作業や、水
底面２の凹部２ａの不陸部に袋体を差込み充填材５を注
入する作業等の全てをダイバー作業に委ねて行うため極
めて能率が悪かった。特に、深い水深や潮流の速い海域
では作業時に袋体が流されやすく取付作業が困難になる
とともに危険が伴う課題もあった。In the prior art in which the elongated body 3 is fixedly installed on the water bottom surface 2 made of hard ground as described above, an empty bag is brought to the bottom of the water, and is laid side by side on the elongated body 3. Since the work of injecting (filling) the filling material 5 into the bag body and the work of inserting the bag body into the uneven portion of the concave portion 2a of the water bottom surface 2 and injecting the filling material 5 are left to the diver work, they are extremely performed. The efficiency was poor. In particular, there is a problem that the bag body is easily washed away at the time of work in a deep water depth or a sea area where the tide is fast, making the mounting work difficult and accompanied by danger.
【０００７】また、水底面２の地盤に凹凸がある箇所で
は長尺体３と水底面２との隙間を埋める袋体のセッテイ
ングが困難であり、更に能率を悪化させる要因となって
いた。Further, in a place where the ground of the water bottom surface 2 has irregularities, it is difficult to set a bag body to fill the gap between the long body 3 and the water bottom surface 2, and this is a factor that further deteriorates efficiency.
【０００８】また近年、環境保全面から工事に伴う環境
への悪影響を排除する要請が強くなってきている。従っ
て、硬質地盤以外の通常地盤においても、前述のような
長尺体を埋設して保護する従来技術において掘削溝１０
を浚渫・埋め戻す際に周辺水域を汚濁させる恐れがある
場合は何らかの対策が必要となる課題があった。In recent years, there has been an increasing demand for eliminating adverse effects on the environment due to construction work from the viewpoint of environmental protection. Therefore, even in the ordinary ground other than the hard ground, the conventional technology of burying and protecting the long body as described above in the prior art
If there is a risk of polluting the surrounding waters when dredging and backfilling, there is a problem that requires some measures.
【０００９】本発明は前述の従来技術の課題を解消し、
掘削が困難な硬質地盤からなる海底地盤や通常地盤にお
いても環境保全面から水底面に設置された長尺体を掘削
溝に埋設しないで船舶の投錨、潮流や波浪などの外力に
対して保護する作業を能率よく、かつ確実に行う方法を
提供することを目的としたものである。The present invention solves the above-mentioned problems of the prior art,
Even on the submarine ground or hard ground made of hard ground that is difficult to excavate, protect the long body installed on the water floor from the environmental protection side against external forces such as anchoring of ships, tidal currents and waves without burying in the excavation trench It is an object of the present invention to provide a method for performing work efficiently and reliably.
【００１０】[0010]
【課題を解決する手段】前記目的を達成するため本発明
では以下の手段を要旨とした。すなわち、図１〜図４ｄ
に示すように水面上または敷設船上にて、袋体１を折り
畳んだ状態で水底２に設置される長尺体３に取付具４に
より取付け、該長尺体３を水底面２に設置した後、取付
けを解いて袋体１を長尺体３を覆うように広げて各袋体
１内に充填材５を充填することを特徴とする水底面に設
置された長尺体を保護する方法である。To achieve the above object, the present invention has the following features. That is, FIGS.
After the bag 1 is folded and attached to the elongated body 3 installed on the water bottom 2 by the attachment 4 on the water surface or on the laid ship as shown in FIG. A method for protecting the long body installed on the water bottom, characterized by disassembling the attachment and expanding the bag body 1 so as to cover the long body 3 and filling each bag body 1 with the filler 5. is there.
【００１１】上記の構成において水底面２に凹凸がある
場合は図５ａ〜５ｅに示すように、長尺体３に取付ける
袋体１を、水底に設置した際に長尺体の上下に位置する
ように２段配置し、下側袋体１ｂで水底面の凹部２ａの
長尺体３との隙間を埋め、上側袋体１ａで長尺体３を覆
うようにすることができる。In the above configuration, when the water bottom surface 2 has irregularities, as shown in FIGS. 5A to 5E, the bag body 1 attached to the long body 3 is positioned above and below the long body when the bag body 1 is installed on the water bottom. Thus, the lower bag 1b can fill the gap with the elongated body 3 of the concave portion 2a on the water bottom, and the upper bag 1a can cover the elongated body 3.
【００１２】また、長尺体３に対して回転自在とした取
付具４を用い、取付具４上部または袋体１の端部に浮き
４ａを取り付けておけば、設置途中の長尺体３が回転し
ても袋体１の端部が常に長尺体３の上方に位置するよう
にできる。Further, if the floating member 4a is attached to the upper part of the mounting member 4 or the end of the bag body 1 by using the mounting member 4 which is rotatable with respect to the long member 3, the long member 3 in the middle of installation can be obtained. Even if it rotates, the end part of the bag body 1 can always be located above the long body 3.
【００１３】[0013]
【作用】本発明に使用する袋体１は従来技術のグラウト
マット１１と同様なもので、長尺体３の上を覆う袋体１
内に充填したセメントミルクやモルタル等の充填材５が
固化した後は船舶の投錨や潮流・波浪等の外力に対して
長尺体３を保護し、かつ重しとして作用して長尺体３の
移動を阻止する。また、水底面２に凹凸がある場合、水
底面２と長尺体３の隙間に配設した下側袋体１ｂは、柔
軟性があるため内部に注入した充填材５により自由に変
形して隙間を埋めて固化し長尺体３を局部荷重を生じさ
せずに均等に支持する。The bag 1 used in the present invention is the same as the grout mat 11 of the prior art, and the bag 1 covering the long body 3 is used.
After the filler material 5 such as cement milk or mortar filled therein is solidified, the elongated body 3 is protected against external forces such as anchoring of a ship and tides and waves, and acts as a weight and acts as a weight. Prevent movement. Further, when the water bottom surface 2 has irregularities, the lower bag body 1b disposed in the gap between the water bottom surface 2 and the elongated body 3 is freely deformed by the filler 5 injected therein because of its flexibility. The solidification is performed by filling the gap, and the long body 3 is uniformly supported without generating a local load.
【００１４】本発明はこの袋体１の取付方法をダイバー
作業によらずに行うこととしたものである。すなわち、
容易に作業できる水面上または敷設船上で、水底面２に
設置される長尺体３に折り畳んだ空の袋体１を多数連接
して取付けておき、該長尺体３を水底面２に設置した
後、取付けを解いて袋体１を広げて長尺体３を覆うよう
にした。In the present invention, the method of mounting the bag 1 is performed without using a diver. That is,
A large number of folded empty bags 1 are attached to a long body 3 installed on the water bottom 2 on the water surface or on a laying ship where the work can be easily performed, and the long body 3 is installed on the water bottom 2. After that, the attachment was released and the bag body 1 was spread to cover the long body 3.
【００１５】水底面２に凹凸がある場合は長尺体３の上
側と下側の両方に折畳んだ袋体１ａ，１ｂを取付けてお
くことにより下側袋体１ｂは長尺体３を水底面２に設置
した際、自ら長尺体３と凹部水底面２ａの隙間に配設さ
れるためこれを広げて下部袋体１ｂ内に充填材５を充填
するのみで容易に隙間を埋めて長尺体３に局部荷重を生
じることなく安定よく支持する。If the water bottom 2 has irregularities, the folded bags 1a and 1b are attached to both the upper and lower sides of the elongated body 3 so that the lower bag 1b When installed on the bottom surface 2, it is disposed in the gap between the elongated body 3 and the concave water bottom surface 2 a, so that it is expanded and the gap is easily filled only by filling the lower bag 1 b with the filler 5. It stably supports the measuring body 3 without generating a local load.
【００１６】また、長尺体３が設置中に回転する恐れが
ある場合は、回転自在な取付具４と浮き４ａを利用して
折畳んだ袋体１の端部が常に長尺体３の上方に位置する
ようにして、長尺体３の下に巻き込んだりするトラブル
を回避した。If the elongated body 3 is likely to rotate during installation, the end of the bag body 1 folded by using the rotatable mounting member 4 and the float 4a is always in contact with the elongated body 3. It is located above and the trouble of getting caught under the elongated body 3 is avoided.
【００１７】[0017]
【発明の実施の形態】以下、本発明により水底面２に設
置された長尺体３を保護する方法の施工手順を実施形態
にもとずいて説明する。図１は本発明により水底ケーブ
ルの長尺体３を岩盤質の水底面２に設置している全体状
況を示すもので、敷設船から出た水面上にて、折り畳ん
だ状態の袋体１を水底２に設置される長尺体３にリング
形状の取付具４により取付け、該長尺体３を水底面２に
設置した後、取付けを解いて袋体１を長尺体３を覆うよ
うに広げて各袋体１内に充填材５を充填している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A construction procedure of a method for protecting a long body 3 installed on a water bottom 2 according to the present invention will be described below based on an embodiment. FIG. 1 shows an overall situation in which a long body 3 of a submarine cable is installed on a rocky water bottom surface 2 according to the present invention, and a folded bag 1 is placed on the water surface coming out of a laying ship. After attaching the elongate body 3 to the elongate body 3 installed on the water bottom 2 with the ring-shaped attachment 4 and installing the elongate body 3 on the underwater surface 2, the attachment is released so that the bag body 1 covers the elongate body 3. Each bag 1 is spread and filled with the filler 5.
【００１８】以下、本発明の内容を詳細に説明する。 （１）先ず、図２に示すように水底ケーブル３（以下、
長尺体という）を設置する敷設船上または敷設船から出
た水面上で長尺体３の設置作業と並行して袋体１の取付
けを行う。空の袋体１は、折畳んだ状態で取付具４によ
り長尺体３に連接して取付ける。取付箇所は、袋体１の
前後２箇所とした方がよく、長尺体３には取付具４のず
れを止めるずれ止め７を設ける。本発明に使用する袋体
１は、図３ａ、３ｂに示すような形状で布や合成樹脂製
の（テント生地の如き）柔軟性のあるシートの端部を方
形に縫い合わせたものとし、充填材注入用の注入口６を
設けておく。長尺体３を覆う上側袋体１ａの形状・サイ
ズは充填材５を充填した状態で船舶の投錨時の衝撃等に
よる損傷が生じないように十分な厚さ（充填材を充填後
の厚さ３０ｃｍ〜５０ｃｍ程度）とし、潮流や波浪の外
力に対して安定するような広さと重量を確保する。下側
袋体１ｂは充填材５を充填した際、長尺体３と水底面２
の隙間を埋めるに十分な厚さとする。いずれも長手方向
は充填材５の充填や取り付け時の作業性を考慮して決め
ればよく、約１ｍ〜３ｍ程度とする。袋体１を長尺体３
に取付けるにあたり、水底面２が平坦な場合は図４ａ〜
４ｄに示すように上部袋体１ａのみでよいが、水底面２
に凹凸がある場合は図５ａ〜５ｅに示すように袋体１を
長尺体３の上下２段に配設して取付ける。また、長尺体
３が大径管のような場合は設置時に回転することが少な
いため袋体１は内部の空気を排除し、折畳んでロープ等
の取付具で長尺体３に直接取付けてもよいが、水底ケー
ブルのような小径サイズの長尺体３は設置時に回転する
恐れがある。このような場合は図４ａ、４ｂ、５ａに示
すように長尺体３に対して回転自在な取付具４と浮き４
ａを利用して袋体１を長尺体３に取付ける。この例で
は、長尺体３の外径より若干大き目の内径とした取付具
４を用いている。この取付具４はヒンジ４ｃで開閉し、
止め金具ＡとＢで着脱する。この取付具４の上部に上側
袋体１ａを折畳んで固定用紐４ｂで固定し、浮き４ａを
連結している。また、下側袋体１ｂは、同取付具の下部
に沿わせ、両端部を上方に折畳んで前記の浮き４ａに連
結している。敷設船を用いないで浮遊曳航工法や水底曳
航工法を採用する場合も水面上または陸上で同様にして
長尺体３に袋体１の取付け作業をおこなう。 （２）敷設作業により長尺体３が水底面２に着底したら
ダイバー作業で取付具４や浮き４ａを取除き、折畳んだ
袋体１を長尺体３の上に覆うように広げる（図４ｃ）。
袋体を２段配設している場合は下側袋体１ｂを長尺体３
の下側に広げた後、上側袋体１ａを広げる（図５ｃ）。
いずれの袋体１ａ，１ｂも水底面２に広げた際、浮き上
がったりして安定が悪い場合は４隅に重し８を置いたほ
うがよい。 （３）次ぎに各袋体１ａ，１ｂの注入口６にホース１６
を接続し、海上から送られるモルタルまたはセメントミ
ルク等の充填材５を袋体１ａ，１ｂに充填する（図４
ｄ、５ｄ）。充填材５の充填に伴って膨張する袋体が適
切な形状に達したら充填作業を終了する。ここで、適切
な形状とは上部袋体１ａは全体的に所定の厚さが確保で
きた状態、下側袋体１ｂは水底面２の凹部２ａと長尺体
３の隙間が満たされた状態である（図５ｅ）。なお、充
填材５の充填作業は袋体１個毎、または複数の袋体を同
時に行ってもよい。上記（２）、（３）の袋体取付けを
解き充填材５を充填する作業は長尺体３の着底に並行し
ておこなってもよいが、ある区間設置完了後にまとめて
行ってもよい。 （４）図４ｄ、５ｄに示す袋体１から充填用のホース１
６を取り外した後、袋体１に注入された充填材５は所定
の養生期間過ぎれば固化して水底面２に長尺体３を固定
し、投錨等に対する保護と潮流等の外力による移動を阻
止することとなる。本発明の長尺体は前述の水底ケーフ゛ル
以外に水底配管にも同様に適用できる。Hereinafter, the contents of the present invention will be described in detail. (1) First, as shown in FIG.
The bag 1 is mounted on the laying ship on which the long body is to be installed or on the water surface coming out of the laying boat in parallel with the installation of the long body 3. The empty bag 1 is attached to the elongated body 3 by the attachment 4 in the folded state. It is better to attach two places to the front and back of the bag 1, and the long body 3 is provided with a slip stopper 7 for stopping the shift of the fixture 4. The bag 1 used in the present invention has a shape as shown in FIGS. 3a and 3b, and is obtained by sewn a flexible sheet made of cloth or synthetic resin (such as a tent cloth) at the ends thereof in a square shape. An injection port 6 for injection is provided. The shape and size of the upper bag body 1a covering the elongated body 3 is sufficient to prevent damage due to impact or the like when the ship is anchored with the filler 5 filled (thickness after filling the filler). (Approximately 30 cm to 50 cm) to secure a width and weight that are stable against external forces of tides and waves. When the lower bag 1b is filled with the filler 5, the long body 3 and the water bottom 2
Thickness sufficient to fill the gap. In any case, the longitudinal direction may be determined in consideration of the workability at the time of filling and attachment of the filler 5 and is set to about 1 m to 3 m. Long body 3 with bag 1
When the water bottom surface 2 is flat,
4d, only the upper bag 1a is required,
5a to 5e, the bag body 1 is arranged and attached to the upper and lower two stages of the elongated body 3 as shown in FIGS. When the long body 3 is a large-diameter pipe, the bag body 1 does not rotate during installation, so the air inside the bag body 1 is eliminated, and the bag body 1 is folded and directly attached to the long body 3 with an attachment such as a rope. However, the long body 3 having a small diameter such as a submarine cable may rotate during installation. In such a case, as shown in FIGS.
The bag body 1 is attached to the long body 3 by using a. In this example, an attachment 4 having an inner diameter slightly larger than the outer diameter of the elongated body 3 is used. This attachment 4 is opened and closed by a hinge 4c,
Attach / detach with fasteners A and B. The upper bag 1a is folded on the upper part of the attachment 4 and fixed with a fixing cord 4b, and the float 4a is connected. Further, the lower bag 1b is connected to the float 4a by folding both ends upward along the lower part of the attachment. When the floating towing method or the underwater towing method is adopted without using a laying boat, the bag 1 is attached to the long body 3 on the water surface or on land in the same manner. (2) When the long body 3 has landed on the water bottom surface 2 by the laying work, the attachment 4 and the float 4a are removed by diver work, and the folded bag body 1 is spread so as to cover the long body 3 ( FIG. 4c).
When two bags are arranged, the lower bag 1b is
Then, the upper bag 1a is spread (FIG. 5c).
When both bags 1a and 1b are not stable due to floating when spread on the water bottom surface 2, weights 8 should be placed at the four corners. (3) Next, a hose 16 is connected to the inlet 6 of each of the bags 1a and 1b.
And filling the bags 1a and 1b with the filler 5 such as mortar or cement milk sent from the sea (FIG. 4).
d, 5d). When the bag that expands with the filling of the filler 5 reaches an appropriate shape, the filling operation ends. Here, the appropriate shape means that the upper bag 1a has a predetermined thickness as a whole, and the lower bag 1b has a gap between the concave portion 2a of the water bottom surface 2 and the elongated body 3 filled. (FIG. 5e). The filling operation of the filler 5 may be performed for each bag or a plurality of bags at the same time. The work of unpacking the bag body and filling the filling material 5 in the above (2) and (3) may be performed in parallel with the bottom of the long body 3 or may be performed collectively after the installation of a certain section is completed. . (4) Hose 1 for filling from bag 1 shown in FIGS.
After removing the filler 6, the filler 5 injected into the bag 1 solidifies after a predetermined curing period, and fixes the elongated body 3 to the water bottom surface 2 to protect against anchoring and the like and to move by an external force such as a tidal current. Will be blocked. The long body of the present invention can be similarly applied to water bottom piping in addition to the above-mentioned water bottom cable.
【００１９】[0019]
【実施例】以下、本発明を適用する場合の具体的な実施
例について説明する。例えば水深約７０ｍの硬質地盤
（岩盤）からなる水底面に、直径約２０ｃｍ、水中重量
４０kg/ ｍの水底ケーブルを設置し、本発明の方法によ
って保護する場合、上側袋体は幅2.5 ｍ、長さ２ｍ、充
填材を充填後の厚さ４０ｃｍとし、下側袋体を幅2.5
ｍ、長さ２ｍ、厚さは５〜５０ｃｍの凹部にを埋めるこ
とができるようにした。また、袋体内に注入する充填材
はセメントモルタルを使用することとした。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments in which the present invention is applied will be described. For example, when a submarine cable having a diameter of about 20 cm and a water weight of 40 kg / m is installed on the bottom of a hard ground (rock) having a depth of about 70 m and protected by the method of the present invention, the upper bag body is 2.5 m wide and long. 2m, the thickness of the filler after filling is 40cm, and the width of the lower bag is 2.5mm.
m, a length of 2 m, and a thickness of 5 to 50 cm. Also, cement mortar was used as the filler to be injected into the bag.
【００２０】[0020]
【発明の効果】本発明によれば、船舶の投錨や潮流・波
浪等の外力に対して長尺体を保護し、かつ重しとしてし
て長尺体の移動を阻止する袋体を、容易に作業できる水
面上または敷設船上でダイバーに依存せずに取り付ける
ため極めて能率よく、確実に、かつ安全に作業できる。According to the present invention, a bag that protects a long body against an external force such as anchoring of a ship or a tidal current or a wave and prevents the movement of the long body as a weight can be easily provided. It can be installed very efficiently, reliably and safely because it can be installed on the water surface or on a laid ship without depending on divers.
【００２１】また、長尺体を水底面に設置した後のダイ
バー作業も長尺体から袋体の取付けを解いて袋体を広げ
て各袋体内に充填材を注入するのみでよいため作業が容
易である。Also, since the diver work after the long body is installed on the bottom of the water, it is only necessary to unmount the bag body from the long body, spread the bag body and inject the filler into each bag body. Easy.
【００２２】また、水底面に凹凸がある場合には長尺体
に取付ける袋体を上下に位置するように２段配置して設
置するため、下側袋体を水底面の凹部の隙間に改めてセ
ットする必要がない。また、設置中に回転する恐れのあ
る長尺体では袋体回転自在な取付具と浮き利用すること
により長尺体が設置時に回転しても常に袋体を確実に上
方に保つことができるため水底面に長尺体を着底させた
際巻き込むようなトラブルが生じない。If there are irregularities on the water bottom, the bags to be attached to the elongate body are arranged in two stages so as to be positioned vertically, so that the lower bag is replaced with a gap between the recesses on the water bottom. No need to set. In addition, in the case of a long body that may rotate during installation, the bag body can always be reliably held upward even if the long body rotates during installation by using a floating attachment with a rotatable bag. When the long body is settled on the bottom of the water, there is no trouble of getting caught.
【００２３】以上延べたように、本発明は掘削が困難な
硬質地盤からなる海底地盤や通常地盤においても環境保
全面から水底面に設置された長尺体を掘削溝に埋設しな
いで船舶の投錨、潮流や波浪などの外力に対して保護す
る作業を能率よく、かつ確実に行うことができる。As described above, the present invention does not embed a long body, which is installed on the water bottom from the environmental protection side, in a submerged ground made of hard ground, which is difficult to excavate, or in a normal ground, without anchoring the vessel in a digging trench. In addition, work for protecting against external forces such as tides and waves can be performed efficiently and reliably.
【図１】本発明の実施例で長尺体を水底に設置し保護す
る方法の全体図。FIG. 1 is an overall view of a method for installing and protecting a long body on a water bottom according to an embodiment of the present invention.
【図２】本発明における長尺体を保護する袋体の取付
図。FIG. 2 is a mounting view of a bag for protecting a long body according to the present invention.
【図３】（ａ）は袋体の平面形状図、（ｂ）は、同図
（ａ）のＡ−Ａ断面図。3A is a plan view of a bag, and FIG. 3B is a cross-sectional view taken along line AA of FIG. 3A.
【図４】（ａ）は、袋体の取付方法の図、（ｂ）は、長
尺体に袋体を折畳んで取付けた状況の図、（ｃ）は、水
底に設置された長尺体を覆うように袋体を広げた状況の
図、（ｄ）は、袋体内に充填材を充填した状況の図。
（完成図）4A is a view showing a method of attaching a bag, FIG. 4B is a view showing a state where the bag is folded and attached to a long body, and FIG. 4C is a long view installed on a water bottom. The figure of the situation where the bag body was expanded so as to cover the body, and (d) is the figure of the situation where the filler was filled in the bag body.
(Completed drawing)
【図５】（ａ）は、長尺体に上下２段に袋体を折畳んで
取付けた状況の図、（ｂ）は、折り畳んで取付けた袋体
を展開する状態の図、（ｃ）は、長尺体を覆う上側袋体
と凹部水底との隙間に広げた下側袋体の状況の図、
（ｄ）と（ｅ）は、長尺体に上下２段に配設した袋体内
に充填材を充填した状況の図で、（ｄ）は、（ｅ）のＢ
−Ｂ断面を示す。（完成図）5A is a view showing a state in which a bag body is folded and attached to a long body in two upper and lower stages, FIG. 5B is a view showing a state in which the folded bag body is deployed, and FIG. Is a diagram of the situation of the lower bag extended to the gap between the upper bag covering the elongated body and the concave bottom,
(D) and (e) are diagrams showing a state in which a filler is filled in a bag body which is disposed in an elongated body in two upper and lower tiers, and (d) is a view of B in (e).
3B shows a cross section. (Completed drawing)
【図６】従来技術の例で掘削溝に長尺体を埋設保護した
図。FIG. 6 is a diagram showing an example of a conventional technique in which a long body is buried and protected in an excavation trench.
【図７】従来技術の例で岩盤水底面に設置された長尺体
をグラウトマットで覆った図。FIG. 7 is a view of a conventional example in which a long body installed on a water bottom of a rock is covered with a grout mat.
【図８】従来技術において水底の凹部と長尺体の隙間に
グラウトマットを埋めた図。FIG. 8 is a diagram in which a grout mat is buried in a gap between a concave portion on a water bottom and a long body in a conventional technique.
１ 袋体 １ａ 上部袋体 １ｂ 下部袋体 ２水底、（水底面） ２ａ凹部水底面 ３長尺体 ４取付具 ４ａ浮き ５充填材 １６ ホース DESCRIPTION OF SYMBOLS 1 Bag body 1a Upper bag body 1b Lower bag body 2 Water bottom, (water bottom surface) 2a Concave water bottom surface 3 Long body 4 Fixture 4a Float 5 Filler 16 Hose
───────────────────────────────────────────────────── フロントページの続き (72)発明者 萩原 政弘 東京都千代田区大手町二丁目６番３号 新 日本製鐵株式会社内 Ｆターム(参考） 5G369 AA06 BA02 BB02 DA02 DA04 EA01 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Hagiwara 2-6-3 Otemachi, Chiyoda-ku, Tokyo New Nippon Steel Corporation F-term (reference) 5G369 AA06 BA02 BB02 DA02 DA04 EA01
Claims (3)
畳んだ状態で水底に設置される長尺体に取付具により取
付け、該長尺体を水底面に設置した後、取付けを解いて
袋体を長尺体を覆うように広げて各袋体内に充填材を充
填することを特徴とする水底面に設置された長尺体を保
護する方法。1. On a water surface or on a laying ship, a bag is folded and attached to a long body installed on the water bottom with a mounting tool, and after the long body is installed on the water bottom, the attachment is released. A method for protecting a long body installed on a water bottom, characterized by spreading a bag to cover the long body and filling each bag body with a filler.
下に位置するように２段配置し、下側袋体で水底面の凹
凸部の長尺体との隙間を埋め、上側袋体で長尺体を覆う
ようにしたことを特徴とする請求項１記載の水底面に設
置された長尺体を保護する方法。2. The bag body is arranged in two stages so as to be positioned above and below the long body when installed on the water bottom, and the lower bag body fills a gap between the uneven body on the water bottom and the long body. 2. The method for protecting a long body installed on a water bottom according to claim 1, wherein the long body is covered with an upper bag.
在とし取付具上部または袋体の端部に浮きを取り付けて
おき、設置途中の長尺体が回転しても袋体の端部が常に
長尺体の上方に位置するようにしたことを特徴とする請
求項１記載ならびに請求項２記載の水底面に設置された
長尺体を保護する方法。3. A mounting member for the bag body is rotatable with respect to the long body, and a float is attached to an upper portion of the mounting member or an end of the bag body so that the bag body is rotated even when the long body is being installed. 3. The method for protecting a long body installed on a water bottom according to claim 1, wherein the end of the long body is always located above the long body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25770698A JP3971854B2 (en) | 1998-09-11 | 1998-09-11 | How to protect long objects installed on the bottom of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25770698A JP3971854B2 (en) | 1998-09-11 | 1998-09-11 | How to protect long objects installed on the bottom of water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000092675A true JP2000092675A (en) | 2000-03-31 |
| JP3971854B2 JP3971854B2 (en) | 2007-09-05 |
Family
ID=17309989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25770698A Expired - Lifetime JP3971854B2 (en) | 1998-09-11 | 1998-09-11 | How to protect long objects installed on the bottom of water |
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| Country | Link |
|---|---|
| JP (1) | JP3971854B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137366A (en) * | 2009-12-29 | 2011-07-14 | Kyowa Co Ltd | Method for planarizing unevenness of seabed |
| CN102661447A (en) * | 2012-04-24 | 2012-09-12 | 天津金盛达石油机械有限公司 | Cable protector |
-
1998
- 1998-09-11 JP JP25770698A patent/JP3971854B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137366A (en) * | 2009-12-29 | 2011-07-14 | Kyowa Co Ltd | Method for planarizing unevenness of seabed |
| CN102661447A (en) * | 2012-04-24 | 2012-09-12 | 天津金盛达石油机械有限公司 | Cable protector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3971854B2 (en) | 2007-09-05 |
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