JPH09310320A - Underwater deposit processing method and system and injection tube rotating mechanism - Google Patents
Underwater deposit processing method and system and injection tube rotating mechanismInfo
- Publication number
- JPH09310320A JPH09310320A JP8126889A JP12688996A JPH09310320A JP H09310320 A JPH09310320 A JP H09310320A JP 8126889 A JP8126889 A JP 8126889A JP 12688996 A JP12688996 A JP 12688996A JP H09310320 A JPH09310320 A JP H09310320A
- Authority
- JP
- Japan
- Prior art keywords
- injection tube
- opening frame
- underwater
- injection
- nozzle
- 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
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
- Farming Of Fish And Shellfish (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中に堆積した牡
蠣殻、貝殻、死珊瑚の残骸など、硬質で脆い塊状の水中
堆積物の処理方法とその装置及び処理装置に用いる噴射
管の回動機構に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating hard and fragile massive underwater sediments such as oyster shells, shells and dead coral remnants deposited in water, and to the apparatus and the rotation of a jet pipe used in the processing apparatus. It concerns the mechanism.
【０００２】[0002]
【従来の技術】従来、この種の水中堆積物の処理につい
ては、クラブバケット船で運搬船上に掬い上げ、深海域
に投棄する処理方法が行われてきたが、最近、下端を開
口した筒体の下端部に下向きの高圧水噴射ノズルと攪拌
羽根を設け、上部から懸垂して堆積層上に下降させ、高
圧水と攪拌羽根の回転によって堆積物を破砕処理する方
法（特公平３ー8737）が行われるようになった。2. Description of the Related Art Conventionally, for this type of underwater sediment treatment, a method of scooping up on a carrier by a club bucket ship and dumping it in the deep sea has been performed. A method of disposing a high-pressure water jet nozzle and a stirring blade downward at the lower end of the tank, suspending it from above and descending onto the sedimentary layer, and crushing the sediment by rotating the high-pressure water and the stirring blade (Japanese Patent Publication No. 3-8737) Began to take place.
【０００３】この処理方法は、内部に攪拌羽根の回転軸
管を支持した懸垂筒を堆積層に到達させ、回転軸管を回
転させると同時に軸管に設けた下向ノズルから高圧水を
噴出させると噴出高圧水も軸管の回転に伴って回動し下
方の堆積層を砕片に破砕するものである。[0003] In this treatment method, a suspension cylinder in which a rotary shaft tube of a stirring blade is supported reaches a deposition layer, and the rotary shaft tube is rotated. At the same time, high-pressure water is jetted from a downward nozzle provided in the shaft tube. The jetted high-pressure water also rotates with the rotation of the shaft tube, and breaks the lower sedimentary layer into fragments.
【０００４】更に、このような攪拌羽根による処理に対
して、下端開口枠を沈降させて所定範囲を区画包囲し、
下端開口枠の内壁に配設固定した噴射ノズルから高圧噴
流を交錯対向させて噴射することにより、包囲区画内に
攪拌噴流を発生させて区画内の水中堆積物を破砕処理す
る方法（特願平７ー340147）が本件出願人によって提案
されている。Further, in response to such processing by the stirring blade, the lower end opening frame is settled to partition and surround a predetermined range,
A method of crushing underwater sediment in a compartment by generating a stirring jet in a surrounding compartment by injecting a high-pressure jet from a spray nozzle arranged and fixed on the inner wall of the lower end opening frame in a crosswise facing manner to generate a stirring jet in the surrounding compartment (Japanese Patent Application No. Hei. 7-340147) has been proposed by the present applicant.
【０００５】[0005]
【発明が解決しようとする課題】しかし、攪拌羽根の回
転による処理方法は懸垂筒の内部に回動装置、減速機、
軸受機構といった重量のある機器を支持しなければなら
ず、水中においてこれらの機構を保護するギヤケースシ
ールの問題や油漏れによる汚染、機器の磨耗といった問
題を避けて通ることができない。However, the processing method based on the rotation of the stirring blade includes a rotating device, a reduction gear,
Heavy equipment, such as bearing mechanisms, must be supported and cannot be avoided in water to avoid problems such as gear case seals protecting these mechanisms, contamination by oil leaks, and equipment wear.
【０００６】また、機械攪拌が中心となっているので、
同時施工面積を大きくするためには油圧装置を大型化す
るほかはなく、攪拌翼の振れによるギヤケース内の油漏
れ対策や整備費用の増大といった問題によって同時施工
面積は限界づけられる。Since mechanical stirring is the main focus,
The only way to increase the simultaneous construction area is to increase the size of the hydraulic system. However, the simultaneous construction area is limited by problems such as measures against oil leakage in the gear case due to run-out of the stirring blades and an increase in maintenance costs.
【０００７】なお、攪拌羽根の回転による処理方法の場
合、攪拌羽根回転軸の軸管に設けた下向ノズルから高圧
水を噴出させて懸垂筒を沈下させるが、懸垂筒コーナー
部の抵抗が大きいのと、ノズルから掘削部まで距離があ
るため、噴流到達距離が不足し沈下不能となることがあ
った。In the case of the treatment method by rotating the stirring blade, high-pressure water is jetted from a downward nozzle provided on the shaft pipe of the stirring blade rotating shaft to cause the suspension tube to sink, but the resistance at the corner of the suspension tube is large. However, since there is a distance from the nozzle to the excavation section, the jet reach distance is insufficient and subsidence is sometimes impossible.
【０００８】更に、高圧噴流を交錯対向させて噴射する
方法は、高圧噴流自体には動きがないため、堆積物の破
砕力と能率面に限界があり、沈下のために特別に噴射ノ
ズル等を設けなければならないという一面があった。Further, in the method of injecting the high-pressure jets in a crosswise opposition, since the high-pressure jet itself does not move, there is a limit in the crushing power and efficiency of the sediment. There was one side that had to be provided.
【０００９】[0009]
【課題を解決するための手段】本発明は、以上の如き問
題点に対処するもので、水中堆積物層の上部に下端開口
枠を沈下させて、その内壁に配設した回動噴射管の下端
部から側方に、高圧噴流を噴射させつつ、噴射管を回動
することにより、開口枠内側に高圧噴流を揺動させて下
端開口枠内の水中堆積物を破砕処理するようにしたもの
である。SUMMARY OF THE INVENTION The present invention addresses the above-mentioned problems and has a lower end opening frame submerged above an underwater sediment layer and a rotary injection pipe disposed on the inner wall thereof. By rotating the injection pipe while injecting the high-pressure jet from the lower end to the side, the high-pressure jet is swung inside the open frame to crush the underwater sediment in the lower open frame. It is.
【００１０】また、回動噴射管のノズル部を、所定角度
で下垂する側方に張出させるようにし、噴射管の張出ノ
ズル部の下縁に掘削刃を設けることにより、開口枠の沈
降を噴射流の回動により段階的に行なえるようにした。[0010] Further, the nozzle portion of the rotary injection pipe is made to protrude to the side hanging down at a predetermined angle, and a drilling blade is provided at the lower edge of the protruding nozzle portion of the injection pipe, whereby the sedimentation of the opening frame is reduced. Can be performed stepwise by rotating the jet flow.
【００１１】更に、噴射管の回動を故障のない単純な機
構によって行なえるように、噴射管を把持部材によって
固定的に把持するとともに把持部材の他端を、ピストン
杆に曲折自在に軸支し、ピストン運動を噴射管の回動運
動に変換するように回動機構を構成した。Further, the injection tube is fixedly held by a holding member and the other end of the holding member is pivotally supported by a piston rod so that the rotation of the injection tube can be performed by a simple mechanism without failure. The rotation mechanism is configured to convert the piston movement into the rotation movement of the injection pipe.
【００１２】[0012]
【発明の実施の形態】以下、図面に従って本発明の実施
の形態を説明する。１は函体に構成された下端開口枠
で、ユニット1a、1b、1cを現場で接合して３つに区画し
て構成されており、その各区画壁の画壁コーナー部と所
定内壁面に回動噴射管４が壁面に沿って回動可能に支持
配設され、函体１の上部に設けられた回動機構２により
回動すると共に、噴射管４の上端は高圧流体の圧送ホー
ス３とスイベル31を介して連結している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a lower end opening frame formed in a box, which is formed by joining units 1a, 1b, and 1c on site and dividing the unit into three sections. A rotary injection pipe 4 is rotatably supported along the wall surface, and is rotated by a rotary mechanism 2 provided on an upper portion of the box 1. And a swivel 31.
【００１３】回動噴射管４の下端部には、所定角度で下
垂する側方に張出するノズル部41が張出し、その先端が
噴射孔42となっており、更に、ノズル部41の下縁には掘
削刃43となっている。At the lower end of the rotary injection pipe 4, a nozzle portion 41 that protrudes laterally at a predetermined angle and protrudes, the tip of which forms an injection hole 42, and a lower edge of the nozzle portion 41. Has an excavating blade 43.
【００１４】回動機構２は、シリンダー21とピストン22
及び把持部材23からなっており、把持部材23が噴射管４
を固定的に把持するとともに把持部材23の他端24を、ピ
ストン杆に曲折自在に軸支してあるのでピストン22の往
復運動によって噴射管４に所定角度範囲の回動運動が与
えられる。The rotation mechanism 2 includes a cylinder 21 and a piston 22
And the holding member 23, and the holding member 23
Is fixedly held and the other end 24 of the holding member 23 is pivotally supported by the piston rod so as to be freely bent.
【００１５】下端開口枠１の上部は台船Ｓなどに積載さ
れたクレーンなどの懸垂機構Ｐによって懸垂され昇降す
る懸垂構造６に構成され、水中堆積物層の上部から堆積
物層Ａ上に懸垂されるようになっている。The upper portion of the lower end opening frame 1 is constituted by a suspension structure 6 which is suspended by a suspension mechanism P such as a crane mounted on a barge S and rises and descends, and is suspended from the upper part of the underwater sediment layer on the sediment layer A. It is supposed to be.
【００１６】以上のように構成された処理装置を懸垂機
構Ｐによって水中堆積物層Ａの上に懸垂し、水中に沈降
させて堆積物層Ａに到達したところで、高圧ポンプ７に
よって噴射管４に高圧水流を圧送し、更にこれを回動さ
せつつ噴射孔42から高圧水流５を噴射して堆積物を破砕
し枠体を堆積物層Ａに進入させ、堆積物層の所定範囲を
枠内に区画包囲する。The processing apparatus constructed as described above is suspended above the underwater sediment layer A by the suspension mechanism P, settles in the water and reaches the sediment layer A. The high-pressure water stream is sent under pressure, and the high-pressure water stream 5 is sprayed from the injection holes 42 while rotating the high-pressure water stream to crush the sediment and move the frame into the sediment layer A. Surround the plot.
【００１７】噴射管４のノズル部41は、所定角度で下垂
する側方に張出しているので、堆積物層Ａに対して斜め
下方に高圧水流５が噴射され、下端開口枠１の沈下範囲
に属する堆積物層Ａを破砕し掘削刃43による掘削と相ま
って枠体を堆積物層Ａに進入させると共に包囲区画内の
堆積物を破砕攪拌して行くものである。Since the nozzle portion 41 of the jet pipe 4 projects laterally downward at a predetermined angle, the high-pressure water stream 5 is jetted obliquely downward with respect to the deposit layer A and falls within the sinking range of the lower end opening frame 1. The deposit layer A to which it belongs is crushed, and the frame body is advanced into the deposit layer A together with the excavation by the digging blade 43, and the deposit in the surrounding section is crushed and stirred.
【００１８】この懸垂沈降作業は、先ず、幅４メートル
・長さ６メートル程度の３区画下端開口枠の場合で、重
量15屯、牡蠣殻による堆積物層上での接地圧5.3 kg/cm2
程度を標準として開口枠を海底に沈降させる。First, the suspension settling operation is performed in the case of a three-section open bottom frame having a width of about 4 meters and a length of about 6 meters, and a ground pressure of 5.3 kg / cm 2 on a sediment layer made of oyster shells with a weight of 15 tons.
The opening frame is settled on the sea floor with the standard as the degree.
【００１９】この場合の破砕噴射ノズル42からの高圧水
流は150kgf/cm2、 800Ｌ/mimで、ノズルは４φのものを
設けて約１分間施工したところ、ほぼ完全な堆積物の破
砕攪拌が行われた。In this case, the high-pressure water flow from the crushing injection nozzle 42 is 150 kgf / cm 2 and 800 L / mim. The nozzle is provided with a diameter of 4φ and is constructed for about 1 minute. Was done.
【００２０】このようにして下端開口枠で、ユニット1
a、1b、1c包囲区画内の堆積物破砕攪拌を完了すると、
下端開口枠１を懸垂機構Ｐによって引揚げ、更に隣接区
画に下端開口枠１を沈降させて同様の施工を行って水中
堆積物の処理を行っていくものである。In this way, the unit 1
a, 1b, 1c When the sediment crushing and stirring in the surrounding area is completed,
The lower-end opening frame 1 is lifted by the suspension mechanism P, and the lower-end opening frame 1 is further settled in an adjacent section to perform the same construction to treat underwater sediments.
【００２１】本発明を以上のように構成すれば、下端開
口枠１を沈下させるための下方掘削噴射を行うことな
く、ノズル部41の下垂角度に従って段階的に下端開口枠
１が沈下され、下端開口枠１の沈下と区画内の堆積物破
砕攪拌を一挙に行うことができる。If the present invention is constructed as described above, the lower end opening frame 1 is lowered in a stepwise manner according to the droop angle of the nozzle portion 41 without performing downward excavation injection for lowering the lower end opening frame 1. The settlement of the opening frame 1 and the crushing and stirring of the sediment in the compartment can be performed at once.
【００２２】なお、本発明においては側方に張出するノ
ズル部41を設けることなく、噴射管４に直接の角度噴射
孔を設けても良く、更に、処理対象の状况によっては噴
射管４の噴射孔を水平にして下端開口枠１を沈下させる
ための下方掘削噴射を併用して行っても良いものであ
る。In the present invention, a direct angle injection hole may be provided in the injection pipe 4 without providing the nozzle portion 41 which protrudes to the side. The downward excavation injection for lowering the lower end opening frame 1 by leveling the injection hole may be performed in combination.
【００２３】[0023]
【図１】本発明実施例による水中堆積物の処理施工状況
を示す全体側面図FIG. 1 is an overall side view showing an underwater sediment processing state according to an embodiment of the present invention.
【図２】下端開口枠の懸垂状況を示す斜視図FIG. 2 is a perspective view showing a suspended state of a lower end opening frame.
【図３】下端開口枠内における回動噴射管の配設状況を
示す開口枠の縦断側面図FIG. 3 is a vertical sectional side view of an opening frame showing a state of disposition of a rotary injection pipe in a lower end opening frame.
【図４】下端開口枠内におけるノズル部の回動状况と高
圧流体噴射状態を示す下端開口枠の底面図FIG. 4 is a bottom view of the lower end opening frame showing a rotation state of the nozzle portion and a high-pressure fluid ejection state in the lower end opening frame.
【図５】回動噴射管の回動機構要部を示す拡大斜視図FIG. 5 is an enlarged perspective view showing a main part of a rotating mechanism of a rotating injection pipe.
１ 下端開口枠 1a、1b、1c 下端開口枠ユニット ２ 噴射管回動機構 21 噴射管回動機構のシリンダー 22 噴射管回動機構のピストン杆 23 噴射管把持部材 24 噴射管把持部材の他端 ３ 回動噴射管への高圧流体圧送ホース 31 スイベル ４ 回動噴射管 41 張出ノズル部 42 高圧流体噴射孔 43 掘削刃 ５ 高圧噴流 ６ 下端開口枠の懸垂構造 ７ 高圧ポンプ ８ 高圧水流切替え機構 Ａ 堆積物層 Ｇ 水面 Ｐ 懸垂機構 Ｓ 台船 DESCRIPTION OF SYMBOLS 1 Lower end opening frame 1a, 1b, 1c Lower end opening frame unit 2 Injection pipe rotation mechanism 21 Cylinder of injection pipe rotation mechanism 22 Piston rod of injection pipe rotation mechanism 23 Injection pipe gripping member 24 The other end of injection pipe gripping member 3 High pressure fluid pressure feeding hose to rotating jet pipe 31 Swivel 4 Rotating jet pipe 41 Overhang nozzle section 42 High pressure fluid jetting hole 43 Drilling blade 5 High pressure jet 6 Suspended structure of lower open frame 7 High pressure pump 8 High pressure water flow switching mechanism A Physical layer G Water surface P Suspension mechanism S Barge
Claims (5)
させて、その内壁に配設した回動噴射管の下端部から側
方に、高圧噴流を噴射させつつ、噴射管を回動すること
により、開口枠内側に高圧噴流を揺動させて下端開口枠
内の水中堆積物を破砕処理することを特徴とする水中堆
積物の処理方法1. A lower end opening frame is lowered above an underwater sediment layer, and a high-pressure jet is jetted laterally from a lower end of a rotary jet pipe disposed on an inner wall of the submerged jet pipe to rotate the jet pipe. Crushing treatment of the underwater sediment in the lower end opening frame by oscillating the high pressure jet inside the opening frame by performing
壁に回動機構を設けた噴射管を配設し、その下端部に開
口枠内側に向けて側方に噴射するノズルを設定したこと
を特徴とする水中堆積物の処理装置2. An injection pipe provided with a rotation mechanism is provided on the inner wall of a lower end opening frame provided with a suspension mechanism on the upper part, and a nozzle for jetting laterally toward the inside of the opening frame is set at the lower end. Underwater sediment treatment apparatus characterized by the following:
所定角度で下垂する側方に張出させるようにした請求項
２記載の水中堆積物の処理装置3. A nozzle part of an injection pipe provided with a rotating mechanism,
3. The underwater sediment processing apparatus according to claim 2, wherein the apparatus is arranged to protrude laterally at a predetermined angle.
設けるようにした請求項３記載の水中堆積物の処理装置4. The underwater sediment treatment apparatus according to claim 3, wherein a drilling blade is provided at a lower edge of the overhanging nozzle portion of the injection pipe.
ストン杆に曲折自在に軸支し、ピストン運動を噴射管の
回動運動に変換するようにしたことを特徴とする水中堆
積物の処理装置における噴射管の回動機構5. An underwater sediment characterized in that the other end of a gripping member for gripping an injection tube is pivotally supported on a piston rod so as to be able to convert a piston movement into a rotational movement of the injection tube. Rotation Mechanism of Injection Tube in Processing Equipment
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8126889A JP2746868B2 (en) | 1996-05-22 | 1996-05-22 | Underwater sediment treatment method and apparatus, and jet tube rotation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8126889A JP2746868B2 (en) | 1996-05-22 | 1996-05-22 | Underwater sediment treatment method and apparatus, and jet tube rotation mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09310320A true JPH09310320A (en) | 1997-12-02 |
| JP2746868B2 JP2746868B2 (en) | 1998-05-06 |
Family
ID=14946373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8126889A Expired - Fee Related JP2746868B2 (en) | 1996-05-22 | 1996-05-22 | Underwater sediment treatment method and apparatus, and jet tube rotation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2746868B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200168A (en) * | 2005-01-19 | 2006-08-03 | Taisei Corp | Method and system for removing sediment from dam |
| WO2024124801A1 (en) * | 2022-12-16 | 2024-06-20 | 清华大学 | Suspended river regulation device and sediment agitating dredger for suspended river regulation |
-
1996
- 1996-05-22 JP JP8126889A patent/JP2746868B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200168A (en) * | 2005-01-19 | 2006-08-03 | Taisei Corp | Method and system for removing sediment from dam |
| JP4594748B2 (en) * | 2005-01-19 | 2010-12-08 | 大成建設株式会社 | Dam sediment removal support method and dam sediment removal support system |
| WO2024124801A1 (en) * | 2022-12-16 | 2024-06-20 | 清华大学 | Suspended river regulation device and sediment agitating dredger for suspended river regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2746868B2 (en) | 1998-05-06 |
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