JPS5931326A - Submarine cable burying machine - Google Patents

Submarine cable burying machine

Info

Publication number
JPS5931326A
JPS5931326A JP57141327A JP14132782A JPS5931326A JP S5931326 A JPS5931326 A JP S5931326A JP 57141327 A JP57141327 A JP 57141327A JP 14132782 A JP14132782 A JP 14132782A JP S5931326 A JPS5931326 A JP S5931326A
Authority
JP
Japan
Prior art keywords
air
jet
plow blade
water
submarine cable
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
Application number
JP57141327A
Other languages
Japanese (ja)
Inventor
Masatoshi Onishi
大西　正敏
Yasushi Miyamoto
泰 宮本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP57141327A priority Critical patent/JPS5931326A/en
Publication of JPS5931326A publication Critical patent/JPS5931326A/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • E02F5/102—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 operatively associated with mole-ploughs, coulters
    • 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

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)

Abstract

PURPOSE:To raise the burying speed of submarine cables by providing a jet nozzle to jet air-bubbled water onto the front and both sides of the plow blade. CONSTITUTION:A plow blade 24 is attached to the lower part of the machine body 11 having sledges 12 provided to both ends of its lower part, an air supply pump 18, a water supply pump 22, and an air mixer 23, and a front jet nozzle 25 is provided to the front of the machine 11 and also side jet nozzles 26 are provided to both sides of the body 11. The pumps 18 and 22 are operated by a power control line 10 inside a rope 13 to drag the machine body 11 from the upside of a tug boat (not illustrated), and the excavation of the sea bottom and the moving of soil are performed with the plow blade 24 while jetting water and air mixed by the device 23 in the form of an air-bubbled jet from nozzles 25 and 26. In this case, a hood 27 serves to exactly settle the excavated soil flying high into the excavated trench where a submarine cable 14 is dropped, thus permitting the cable to be buried.

Description

【発明の詳細な説明】 本発明は海や湖沼等に布設する海底ケーブルを水底地盤
に埋設する埋設機に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a burying machine for burying submarine cables laid in the sea, lakes, etc. in underwater ground.

従来のこの種埋設機には、第１図に示すように、両側に
設けたそり１間に鋤刃２を設けた動式海底ケーブル埋設
機や、第２図に示すように両側そシ１間下部にウォータ
ジェット噴出部３を設けたウォータジェット式海底ケー
ブル埋設機がちり、これらは共に曳航船により牽引しな
がら水底地盤を掘削し、掘削した溝にケーブルを落し込
んでゆくようにするものである。前者は水底地盤を鋤刃
２によって機械的に掘削するため、掘削抵抗が非常に大
きく、移動掘削時、鋤刃２の前部及び側面部での土砂の
たい積や付着による摩擦抵抗力が埋設機に余分な抵抗力
として働らくため、埋設機を牽引する曳航船が大型にな
るという欠点があった。Conventional submarine cable burying machines of this type include, as shown in Fig. 1, a movable submarine cable burying machine in which a plow blade 2 is provided between the sleds 1 on both sides, and a movable submarine cable burying machine in which a plow blade 2 is provided between the sleds 1 on both sides, as shown in Fig. 2. A water jet submarine cable burying machine equipped with a water jet spout 3 at the bottom of the tunnel excavates the underwater ground while being towed by a towing vessel, and drops the cable into the excavated trench. It is. In the former method, the underwater ground is mechanically excavated by the plow blade 2, so the digging resistance is very large.During mobile excavation, the frictional resistance due to the accumulation and adhesion of earth and sand on the front and side parts of the plow blade 2 is This has the disadvantage that the towing vessel that pulls the burial machine becomes large because it acts as an extra resistance force.

また後者は、水中でのウォータジェット使用のため、ウ
ォータジェットと周囲の水との摩擦によ広ウォータジェ
ットの減衰が大きく、掘削効率が悪く、掘削地盤が比較
的柔かい場所での作業に限られていた。更に地盤掘削後
における土砂の排土が吐出水容量に制限されて充分に排
土されないため、掘削深度ならびに掘削速度が小さいと
いう欠点があった。In addition, since the latter uses a water jet underwater, the friction between the water jet and the surrounding water causes large water jet attenuation, resulting in poor excavation efficiency and limited to work in areas where the excavation ground is relatively soft. was. Furthermore, the removal of earth and sand after ground excavation is limited by the discharge water capacity and is not sufficiently removed, resulting in the drawback that the excavation depth and excavation speed are small.

本発明は上記の点にかんがみ、そ９および鋤刃を備えた
海底ケーブル埋設機において、掘削抵抗を低減化し、ま
た排土効果を良好にして掘削速度従ってケーブル埋設速
度を向上せしめ得るようにした海底ケーブル埋設機を提
供するものであって、以下図面について詳細に説明する
。In view of the above-mentioned points, the present invention provides a submarine cable burying machine equipped with a groove and a plow blade, which reduces digging resistance and improves the soil removal effect, thereby increasing the digging speed and therefore the cable burying speed. A submarine cable burying machine is provided, and the drawings will be explained in detail below.

第３図ないし第５図は本発明海底ケーブル埋設機の実施
例を示し、１１は機体本体、１２は機体本体１１の下部
両側に設けたそ９．１３は埋設機を曳航船（図示外）に
より牽引するだめの牽引ロープ、１４は海底ケーブル、
１５はケーブル通路、１６はケーブル押え車、１８はエ
アー供給ポンプであって、このポンプ１８は水面に浮か
べたブイ１９に取９つけたシュノーケル２０がら空気を
エアー供給ホース２１を通して取り入れる。２２は周辺
の水を取９入れるようにしたウォータ供給ポンプ、２３
はエアー供給ポンプ１８から供給される空気と、ウォー
タ供給ポンプ２２から供給される水とを混合するエアー
混合装置、２４は鋤刃であって、との鋤刃２４の前面に
は前部ジェットノズル２５が設けられ、またその両側面
部には側部ジェットノズル２６が設けられており、これ
ら前部ジェットノズル２５および側部ジェットノズル２
６よシ、上記エアー混合装置２３で混合された水と空気
とをエアーバブルジェットとして噴射させるようになっ
ている。前部ノズル２５からは第５図（ａ）に示すよう
に、また、側部ノズル２６からは同図（ｂ）に示すよう
にエアーバブルジェットが噴射される。２７は排土用フ
ードである。Figures 3 to 5 show an embodiment of the submarine cable burying machine of the present invention, where 11 is the fuselage body, 12 is the lower part of the fuselage body 11 on both sides. 14 is a submarine cable,
15 is a cable passage, 16 is a cable presser, and 18 is an air supply pump, and this pump 18 takes in air through an air supply hose 21 from a snorkel 20 attached to a buoy 19 floating on the water surface. 22 is a water supply pump designed to take in water from the surrounding area, 23
2 is an air mixing device for mixing air supplied from the air supply pump 18 and water supplied from the water supply pump 22, 24 is a plow blade, and a front jet nozzle is provided in front of the plow blade 24. 25 is provided, and side jet nozzles 26 are provided on both sides thereof, and these front jet nozzles 25 and side jet nozzles 2
6, the water and air mixed by the air mixing device 23 are jetted as an air bubble jet. An air bubble jet is ejected from the front nozzle 25 as shown in FIG. 5(a), and from the side nozzle 26 as shown in FIG. 5(b). 27 is a hood for soil removal.

なおエアー供給ポンプ１８およびウォータ供給ポンプ１
９は牽引ロープ１２内にある電力制御線により曳航船上
で制御し得るようになっている。Note that the air supply pump 18 and the water supply pump 1
9 can be controlled on board the towing vessel by means of a power control line in the tow rope 12.

通常の運転では、エアーバブルジェットを噴射しながら
、鋤刃２４と共に掘削排土を行なうが、前部ジェットノ
ズル２５によって噴射されるエアーバブルウォータジェ
ットによって鋤刃２４前部の水底地盤を軟弱地盤にする
と同時に、鋤刃２４の前部表面にはエアーバブルが空気
層を形成し、掘削地盤と鋤刃２４の面との摩擦力を低減
させ、掘削抵抗を低減させる。また鋤刃２４前面部に留
まる土砂をエアーバブルによるエアーリフト効果によっ
て効率よく排出する。一方何部ジエツトノズル２６より
噴射されるエアーバブルウォータジェットは鋤刃２４側
面に付着する土砂を排除し、また鋤刃２４側面の表面に
エアーバブルによる空気層が前述同様に形成されること
により鋤刃２４の摩擦抵抗を大幅に低減させる。さらに
前部ジェットノズル２５および側部ジェットノズル２６
よシ噴射されるエアーバブルによって排土した土砂の沈
下速度を低減させる。そのため、ケーブル埋設時に海底
ケーブル１４に急激な土庄がかからず、埋設中のケーブ
ルの残留張力が充分に緩和される。In normal operation, excavation and removal is carried out together with the plow blade 24 while injecting an air bubble jet, but the water bottom ground in front of the plow blade 24 is turned into soft ground by the air bubble water jet jetted by the front jet nozzle 25. At the same time, the air bubbles form an air layer on the front surface of the plow blade 24, which reduces the frictional force between the excavated ground and the surface of the plow blade 24, thereby reducing digging resistance. In addition, the dirt and sand remaining on the front surface of the plow blade 24 is efficiently discharged by the air lift effect caused by air bubbles. On the other hand, the air bubble water jet injected from the jet nozzle 26 removes the dirt adhering to the side surface of the plow blade 24, and also forms an air layer by air bubbles on the surface of the side surface of the plow blade 24 in the same manner as described above. Significantly reduces the frictional resistance of 24. Additionally, a front jet nozzle 25 and a side jet nozzle 26
The sinking speed of the excavated earth and sand is reduced by the air bubbles that are injected. Therefore, when the cable is buried, the submarine cable 14 is not subjected to sudden soil stress, and the residual tension of the cable during burial is sufficiently alleviated.

また両側のそり　１２　、１２間を覆う排土用フード２
７は掘削により舞い上った排土を海底ケーブル１４を落
し込んだ掘削溝に確実に沈下してケーブル埋設を行なう
。In addition, the soil removal hood 2 that covers between the sleds 12 and 12 on both sides
7, the cable is buried by ensuring that the earth thrown up by the excavation sinks into the excavated trench into which the submarine cable 14 has been dropped.

なお、水深が浅い場合には、エアーバブルウォータを作
るだめの空気と水の供給は水上からのポンプ船によって
行なってもよい。In addition, when the water depth is shallow, air and water may be supplied to the tank for producing air bubble water by a pump boat from the water.

以上のように本発明によれば、鋤刃の前面部および両側
面部に設けたジェットノズルからエアーバブルウォータ
を噴射させるようにしたことによシ鋤刃の前面および両
側面の摩擦抵抗を低減して掘削抵抗を低減でき、また前
部ノズルから噴射されるエアーバブルによシ鋤刃前部に
留まる土砂をエアーリフト効果によって効率よく排出し
、ケーブル埋設速度の高速化、曳航船の小型化、さらに
は適応掘削深度の向上を計ることができる。一方またエ
アーバブルによって排土した土砂の沈下速度を低減させ
、埋設ケーブルの残留張力を緩和させる等の効果を有す
る。As described above, according to the present invention, air bubble water is jetted from the jet nozzles provided on the front surface and both side surfaces of the plow blade, thereby reducing the frictional resistance on the front surface and both side surfaces of the plow blade. In addition, the air bubbles injected from the front nozzle efficiently discharge dirt stuck in the front of the plow blade by the air lift effect, increasing cable burying speed, downsizing the towing vessel, Furthermore, it is possible to improve the adaptive excavation depth. On the other hand, the air bubbles also have the effect of reducing the settling speed of the excavated earth and sand, and relieving the residual tension of the buried cable.

【図面の簡単な説明】[Brief explanation of drawings]

第１図および第２図は従来の海底ケーブル埋設機の側面
図、第６図は本発明の実施例の正面図、第４図は同側面
図、第５図はエアーバブルウォータジェットノズルから
のエアーバブルウォータの噴射状態の説明図を示す。 １２・・・・そシ、１４・・・海底ケーブル、２４・・
・鋤刃、２５・・・前部ジェットノズル、２６・・・側
部ジェットノズル キ５回 （２） （１）1 and 2 are side views of a conventional submarine cable burying machine, FIG. 6 is a front view of an embodiment of the present invention, FIG. 4 is a side view of the same, and FIG. 5 is a side view of a conventional submarine cable burying machine. The explanatory diagram of the injection state of air bubble water is shown. 12... soshi, 14... submarine cable, 24...
・Plow blade, 25...Front jet nozzle, 26...Side jet nozzle 5 times (2) (1)

Claims (1)

【特許請求の範囲】[Claims] そυおよび鋤刃を備えた海底ケーブル埋設機において、
鋤刃の前部および両側面にエアーバブルウォータを噴射
せしめるジェットノズルを設けたことを特徴とする海底
ケーブル埋設機。In a submarine cable burying machine equipped with a shaft and a plow blade,
A submarine cable burying machine characterized by a jet nozzle that sprays air bubble water on the front and both sides of the plow blade.
JP57141327A 1982-08-15 1982-08-15 Submarine cable burying machine Pending JPS5931326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57141327A JPS5931326A (en) 1982-08-15 1982-08-15 Submarine cable burying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57141327A JPS5931326A (en) 1982-08-15 1982-08-15 Submarine cable burying machine

Publications (1)

Publication Number Publication Date
JPS5931326A true JPS5931326A (en) 1984-02-20

Family

ID=15289352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57141327A Pending JPS5931326A (en) 1982-08-15 1982-08-15 Submarine cable burying machine

Country Status (1)

Country Link
JP (1) JPS5931326A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049946A1 (en) * 2000-01-05 2001-07-12 Soil Machine Dynamics Limited Submarine plough
WO2001049947A1 (en) * 2000-01-05 2001-07-12 Soil Machine Dynamics Limited Submarine plough and plough share for such plough
US7525298B2 (en) 2001-10-23 2009-04-28 Medtronic Minimed, Inc. Implantable sensor electrodes and electronic circuitry
KR101249353B1 (en) * 2010-12-10 2013-04-04 김종복 Apparatus for laying of utility line simultaneously
CN106498998A (en) * 2016-10-17 2017-03-15 杭州电子科技大学 A kind of hydraulic turbine drives punching to penetrate formula ditching device and its trench digging method under water

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049946A1 (en) * 2000-01-05 2001-07-12 Soil Machine Dynamics Limited Submarine plough
WO2001049947A1 (en) * 2000-01-05 2001-07-12 Soil Machine Dynamics Limited Submarine plough and plough share for such plough
US7525298B2 (en) 2001-10-23 2009-04-28 Medtronic Minimed, Inc. Implantable sensor electrodes and electronic circuitry
KR101249353B1 (en) * 2010-12-10 2013-04-04 김종복 Apparatus for laying of utility line simultaneously
CN106498998A (en) * 2016-10-17 2017-03-15 杭州电子科技大学 A kind of hydraulic turbine drives punching to penetrate formula ditching device and its trench digging method under water

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