JPH0151613B2 - - Google Patents
Info
- Publication number
- JPH0151613B2 JPH0151613B2 JP56003433A JP343381A JPH0151613B2 JP H0151613 B2 JPH0151613 B2 JP H0151613B2 JP 56003433 A JP56003433 A JP 56003433A JP 343381 A JP343381 A JP 343381A JP H0151613 B2 JPH0151613 B2 JP H0151613B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- sludge
- cable guide
- guide
- submarine
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
- E02F5/106—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using ploughs, coulters, rippers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
- E02F5/107—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using blowing-effect devices, e.g. jets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Electric Cable Installation (AREA)
Description
【発明の詳細な説明】
本発明は海底ケ−ブル埋没装置の改良に関し、
掘削土砂の影響を受けることなく所定の深さに正
確に海底ケ−ブルを埋没できる海底ケ−ブル埋没
装置を提供することが目的である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a submarine cable burying device,
It is an object of the present invention to provide a submarine cable burying device that can accurately bury a submarine cable to a predetermined depth without being affected by excavated soil.
海底ケ−ブルの布設には、単に海底に沿つて海
底ケ−ブルを配設し部分的に固定する手段及び掘
削した海底溝内へケ−ブルを布設する方法或いは
布設後若しくは掘削しながらケ−ブルを布設し埋
没させる方法があるが、本発明は掘削しながらケ
−ブルを布設し埋没させるための装置である。 Submarine cables can be laid by simply laying the cable along the seabed and partially fixing it, by laying the cable into an excavated submarine trench, or by laying the cable after laying it or while excavating it. - There are methods for laying and burying cables, but the present invention is an apparatus for laying and burying cables while excavating.
従来のこの種の装置では、たとえば特開昭53−
74292号公報に開示されているように、海底を掘
削するウオ−タジエツト式掘削手段と、この掘削
手段で掘り起こされた土砂を後方に案内する複数
の鋤刃を梯子状に設けて枠体を形成し、この枠体
を海底を走行させ、掘削手段で形成された溝にケ
−ブルを敷設したのち再び土砂を溝内に埋め戻し
てケ−ブルを埋没するようにしたものが知られて
いる。 In conventional devices of this type, for example,
As disclosed in Publication No. 74292, a frame body is formed by providing a water jet excavation means for excavating the seabed and a plurality of plow blades arranged in a ladder shape for guiding the earth and sand dug up by this excavation means backward. However, it is known that this frame is run on the seabed, the cable is laid in a trench formed by excavation means, and then earth and sand is filled back into the trench to bury the cable. .
ところが、上記公報に記載されたものでは敷設
されるケ−ブルが鋤刃の下方を通る構造であるこ
とからケ−ブルが敷設される時に鋤刃に接触し傷
付いたり、切断されてしまうという致命的な欠陥
がある。 However, in the method described in the above publication, the cable being laid is structured to pass under the plow blade, so when the cable is being laid, it comes into contact with the plow blade and may be damaged or cut. It has a fatal flaw.
加えて掘削手段であるウオ−タジエツトがケ−
ブルの両側方に配置されていることからウオ−タ
ジエツトから噴射された噴流とこれで掘削された
土砂流でケ−ブルが巻き上げられて浮き上がつて
しまつたり、土砂流中の固塊物によりケ−ブルが
傷付いてしまつたりするという問題もあり、完全
な埋没を達成できない嫌いがある。 In addition, the water jet, which is an excavation method, is
Because the cables are placed on both sides of the cable, the jets ejected from the water jets and the debris flow excavated by the water jets can wind up the cables and cause them to float, and solidified lumps in the debris flow. There is also the problem that the cable may be damaged by this, and it is difficult to achieve complete burial.
本発明は斯る在来手段の欠点を解消する装置で
あつて、図示例において詳説すると、掘削手段
１，１′を具備したケ−ブルガイド２が海底ソリ
枠体３に装設されたものにおいて、ケ−ブルガイ
ド２を開口面が下方に向くチヤンネル形とすると
共に該ケ−ブルガイドの内部に、長手方向両端部
で開口するケ−ブル通路４を形成し、該ケ−ブル
通路４とチヤンネル開口面との間には、掘削手段
１，１′を装備させると共に圧力水噴射による排
泥エジエクタ−５，５′の排泥吸引口６，６′をケ
−ブルガイド２の開口側前面に開口させ、該排泥
エジエクタ−５，５′の排泥吐出口７，７′を、ケ
−ブルガイド２の背板８上に開口９する戻し管１
０に接続した構成である。 The present invention is a device which eliminates the drawbacks of the conventional means, and will be explained in detail with reference to the illustrated example.The present invention is a device in which a cable guide 2 equipped with excavation means 1 and 1' is installed on a submarine sled frame 3. The cable guide 2 is formed into a channel shape with an opening facing downward, and a cable passage 4 that is open at both ends in the longitudinal direction is formed inside the cable guide. Excavation means 1, 1' are installed between the channel opening surface and the sludge suction ports 6, 6' of the sludge ejectors 5, 5' that use pressurized water injection are connected to the opening side of the cable guide 2. A return pipe 1 is opened at the front and the sludge discharge ports 7, 7' of the sludge ejectors 5, 5' are opened 9 on the back plate 8 of the cable guide 2.
This configuration is connected to 0.
掘削手段１，１′として、高圧水ジエツトの周
囲を低圧水ジエツトが囲繞し且つ高圧水の噴射口
近くへ加圧空気を供給するようにした複合ジエツ
ト１１と、低圧水ジエツトの噴射口近くへ加圧空
気を供給するようにした混気ジエツト１２を、掘
削対象地盤へ噴射衝突させる他、単なる高圧水を
噴射衝突させる手段或いは振動刃、回転刃の駆動
と高圧水噴射とを併用する手段等はあるが、いず
れの手段を採用してもよい。 The excavation means 1 and 1' include a composite jet 11 in which a high-pressure water jet is surrounded by a low-pressure water jet and supplies pressurized air near the injection port of the high-pressure water; In addition to jetting and colliding the air-fuel mixture jet 12 that supplies pressurized air to the ground to be excavated, there are also means for simply jetting and colliding high-pressure water, or means that uses a combination of driving a vibrating blade or rotary blade and jetting high-pressure water. However, any method may be used.
又、ケ−ブルガイド２は一端を海底ソリ枠体３
に枢着し油圧シリンダ−１４でもつて揺動自在と
し且つケ−ブルガイド２の背板８の両側に立上り
壁１５を形成することが好ましい。 Moreover, the cable guide 2 has one end connected to the submarine sled frame 3.
It is preferable that the cable guide 2 be pivotally connected to the cable guide 2 so as to be swingable by a hydraulic cylinder 14, and that rising walls 15 be formed on both sides of the back plate 8 of the cable guide 2.
更に、排泥エジエクタ−５，５′は、図示の如
くケ−ブルガイド２の中間位置Ａと終端位置Ｂの
二ケ所に装設すると共に、圧力水噴射手段は第５
図に示すように圧力水噴射口１６を囲繞する保護
管１７に空気導入口１８を設けて加圧空気を供給
する混気ジエツトポンプ構造とすることが、排泥
効率を良好にし排泥効率の低さから生ずる掘削障
害を解消するのにより効果がある。 Furthermore, the sludge ejectors 5, 5' are installed at two locations, the intermediate position A and the terminal position B, of the cable guide 2 as shown in the figure, and the pressure water injection means is installed at the fifth position.
As shown in the figure, an air inlet 18 is provided in the protection tube 17 surrounding the pressure water injection port 16 to provide a mixed air jet pump structure that supplies pressurized air, which improves sludge removal efficiency and reduces sludge removal efficiency. It is more effective in eliminating excavation problems caused by
尚、図面上、高圧水、低圧水、加圧空気、圧力
油の配管を省略したが、これらは布設船或いは海
底ソリ枠等に搭載した各種ポンプ、コンプレツサ
−から配管されるものとする。 Although piping for high-pressure water, low-pressure water, pressurized air, and pressure oil is omitted in the drawings, these are assumed to be piped from various pumps and compressors mounted on a laying ship or undersea sled frame.
上記のように構成した本発明装置は、海面上の
布設船で海底に曳航しながらケ−ブルガイド巾程
度のケ−ブル埋設用の溝を掘削し、掘削された溝
底へ、布設船上から供給されるケ−ブルを、ケ−
ブルガイドの自由端部を介して布設し、該ケ−ブ
ルを掘削土砂で埋没させるのであるが、ケ−ブル
ガイド内のケ−ブル通路外に、掘削手段とは別に
排泥エジエクタ−の排泥吸引口をケ−ブルガイド
の前面側に開口させて排泥吸引口から直接吸引し
た排泥土砂をケ−ブルガイドの背板上へ排出する
ようにしたから、先ず、敷設されるケ−ブルがケ
−ブルガイドで他物との接触が防止され、従来の
ような鋤刃や掘削された土砂の接触による損傷や
切断等の事故を完全に防止することが出来る。 The device of the present invention configured as described above excavates a trench for burying a cable about the width of the cable guide while being towed to the seabed by a laying ship on the sea surface, and then digs into the bottom of the excavated trench from aboard the laying ship. Connect the supplied cable to
The cable is laid through the free end of the cable guide, and the cable is buried in excavated earth and sand. Since the mud suction port is opened on the front side of the cable guide and the mud and dirt sucked directly from the mud suction port is discharged onto the back plate of the cable guide, first, the cable to be laid is The cable guide prevents the cable from coming into contact with other objects, completely preventing accidents such as damage or cutting caused by contact with plow blades or excavated earth and sand.
しかも、掘削された排泥土砂はジエツト水流と
ともに溝内に流れ落ちようとするが、そのながれ
落ちようとする水流に面して開口している排泥吸
引口から直接吸引され、ケ−ブル敷設用の溝には
流れ込まないので掘削障害が無くなり掘削効率を
向上させることが出来る。 Moreover, the excavated sludge and sand tries to flow down into the trench with the jet water flow, but it is directly sucked from the sludge suction port that opens facing the water flow, and is used for laying cables. Because it does not flow into the groove, excavation obstacles are eliminated and excavation efficiency can be improved.
特に掘削によつて生じた排泥土砂を、ケ−ブル
が布設される溝底よりも高位置となるケ−ブルガ
イドの背板上から掘削溝内へ戻すために、布設さ
れたケ−ブルが持ち上げられることなく、確実且
つ正確に排泥土砂によつて埋没されるようにな
る。 In particular, a cable is laid to return the sludge and sand generated by excavation into the excavated trench from the back plate of the cable guide, which is located at a higher position than the trench bottom where the cable is laid. The sludge is reliably and accurately buried in the sludge without being lifted up.
また、排泥土砂がケ−ブル上に落下するに際し
ては、ケ−ブルガイドの背板が誘導路となつて落
下速度が緩和されるから、埋没時における排泥土
砂によるケ−ブル損傷が無く、しかも、排泥土砂
の粒子の大きさ、比重の差等により落下速度に差
が生じて、ケ−ブル周囲が適当粒子から成る排泥
土砂で固められるようになる。 In addition, when the sludge falls onto the cable, the back plate of the cable guide acts as a guideway and reduces the falling speed, so there is no damage to the cable due to the sludge when buried. Moreover, differences in the falling speed occur due to differences in particle size, specific gravity, etc. of the sludge, and the area around the cable becomes hardened with the sludge and sand made of appropriate particles.
このように掘削溝底に正確且つ確実にケ−ブル
が埋没されるから、海底にケ−ブルの一部が露呈
するの如き事態が皆無となり、露呈によつて生じ
ていた露呈部分の損傷が解消され、海底ケ−ブル
の耐久性を著しく向上させる等の数多くの効果が
得れるのである。 Since the cable is buried accurately and reliably at the bottom of the excavation trench in this way, there is no chance of a part of the cable being exposed on the seabed, and damage to the exposed part that would otherwise occur due to exposure is eliminated. As a result, many effects such as significantly improving the durability of submarine cables can be obtained.
第１図は海底ケ−ブル布設状態説明図、第２図
は本発明海底ケ−ブル埋没装置の実施例平面図、
第３図は同正面図、第４図は配管を省略したケ−
ブルガイド内一部詳細図、第５図は排泥エジエク
タ−の一例断面図である。
１，１′……掘削手段、２……ケ−ブルガイド、
３……海底ソリ枠体、４……ケ−ブル通路、５，
５′……排泥エジエクタ−、１０……戻し管。
FIG. 1 is an explanatory diagram of the submarine cable installation state, and FIG. 2 is a plan view of an embodiment of the submarine cable burying device of the present invention.
Figure 3 is a front view of the same, Figure 4 is a case with piping omitted.
A detailed view of a portion of the inside of the bull guide, and FIG. 5 is a sectional view of an example of the sludge ejector. 1, 1'... excavation means, 2... cable guide,
3... Submarine sled frame, 4... Cable passage, 5,
5'...Sludge ejector, 10...Return pipe.
Claims (1)
リ枠体に装設されたものにおいて、ケ−ブルガイ
ドを下方に向くチヤンネル形とすると共に該ケ−
ブルガイドの内部に、長手方向両端部で開口する
ケ−ブル通路を形成し、、ケ−ブル通路とチヤン
ネル開口面との間に掘削手段を装備させ、且つ圧
力水噴射による排泥エジエクタ−をケ−ブルガイ
ドの中間位置と終端位置とに装備させ、排泥エジ
エクタ−の排泥吸引口をケ−ブルガイドの全面に
開口させ、排泥エジエクタ−の排泥吐出口をケ−
ブルガイドの背板上に開口する戻し管に接続して
排泥を掘削溝内へ沈下させるように構成したこと
を特徴とする海底ケ−ブル埋没装置。1. In a cable guide equipped with excavation means installed on a submarine sled frame, the cable guide is shaped like a channel facing downward, and the cable guide is
A cable passage that opens at both ends in the longitudinal direction is formed inside the cable guide, and an excavation means is provided between the cable passage and the channel opening surface, and a sludge ejector using pressure water injection is provided. The sludge suction port of the sludge ejector is opened on the entire surface of the cable guide, and the sludge discharge port of the sludge ejector is installed at the intermediate position and the terminal position of the cable guide.
1. A submarine cable burying device, characterized in that it is connected to a return pipe opened on the back plate of a bull guide so that waste mud sinks into an excavated trench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP343381A JPS57116839A (en) | 1981-01-12 | 1981-01-12 | Submarine cable layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP343381A JPS57116839A (en) | 1981-01-12 | 1981-01-12 | Submarine cable layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57116839A JPS57116839A (en) | 1982-07-21 |
| JPH0151613B2 true JPH0151613B2 (en) | 1989-11-06 |
Family
ID=11557226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP343381A Granted JPS57116839A (en) | 1981-01-12 | 1981-01-12 | Submarine cable layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57116839A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835005B2 (en) * | 1976-12-14 | 1983-07-30 | 古河電気工業株式会社 | Striatal submarine burial machine |
-
1981
- 1981-01-12 JP JP343381A patent/JPS57116839A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57116839A (en) | 1982-07-21 |
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