JP6048881B2 - Sediment separation device and dredged soil separation method - Google Patents

Sediment separation device and dredged soil separation method Download PDF

Info

Publication number
JP6048881B2
JP6048881B2 JP2013013056A JP2013013056A JP6048881B2 JP 6048881 B2 JP6048881 B2 JP 6048881B2 JP 2013013056 A JP2013013056 A JP 2013013056A JP 2013013056 A JP2013013056 A JP 2013013056A JP 6048881 B2 JP6048881 B2 JP 6048881B2
Authority
JP
Japan
Prior art keywords
sand
earth
container
separating
water
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 - Fee Related
Application number
JP2013013056A
Other languages
Japanese (ja)
Other versions
JP2014145158A (en
Inventor
泰夫 原田
泰夫 原田
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.)
Penta Ocean Construction Co Ltd
Original Assignee
Penta Ocean Construction Co Ltd
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 Penta Ocean Construction Co Ltd filed Critical Penta Ocean Construction Co Ltd
Priority to JP2013013056A priority Critical patent/JP6048881B2/en
Publication of JP2014145158A publication Critical patent/JP2014145158A/en
Application granted granted Critical
Publication of JP6048881B2 publication Critical patent/JP6048881B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Description

本発明は、ゴミや木片等の異物が混在した浚渫土砂を異物と砂等の土砂成分とに再生利用可能な状態で分離するための土砂分離装置及び浚渫土砂の分離方法に関する。   The present invention relates to an earth and sand separation apparatus and an earth and sand separation method for separating dredged soil mixed with foreign matters such as dust and wood pieces into a foreign material and a sediment component such as sand in a recyclable state.

水底部にゴミや木片等の異物が多く堆積した水域で浚渫を行った場合、その浚渫土砂にはゴミや木片等の異物が多く混在するため、当該異物が混在した浚渫土砂を砂等の土砂成分とゴミや木片等の異物とに分別する必要が生じる。   When dredging is carried out in a water area where a large amount of foreign matter such as dust or wood fragments has accumulated on the bottom of the water, the dredged soil contains a large amount of foreign matter such as dust or wood fragments. It is necessary to separate the components into foreign substances such as garbage and wood chips.

従来、浚渫土砂を土砂成分と異物とに分離する方法としては、異物が混在した浚渫土を陸域に揚土した後、当該陸域に設置された分離装置を用いて分離する方法が一般に広く使用され、その分離装置としては、トロンメルや振動篩等の篩を用いて分離させるもの(例えば、特許文献1又は2を参照)、ろ過装置を使用したもの(例えば、特許文献3を参照)、浚渫土砂に含まれる砂と異物との比重差を利用して分離するもの(例えば、特許文献4を参照)等がある。   Conventionally, as a method of separating dredged sand into earth and sand components and foreign matter, a method of separating dredged soil mixed with foreign matters to a land area and then using a separation device installed in the land area is generally widely used. The separation device used is a separation device using a sieve such as a trommel or a vibrating sieve (for example, see Patent Document 1 or 2), a separation device using a filtration device (for example, see Patent Document 3), There exists what isolate | separates using the specific gravity difference of the sand contained in dredged soil and a foreign material (for example, refer patent document 4).

一方、水域にて土砂と異物とに分離する他の方法としては、水中に設置した筒体と、筒体内に水流を生じさせる水流発生手段と、筒体内に配置された回収網とを備えた分離装置を使用し、前記水流を利用して土砂成分と異物とを分離させ、分離された異物を回収網で回収するとともに、分離された土砂を水底に沈下させるようにしたものも開発されている(例えば、特許文献5を参照)。   On the other hand, as another method for separating the sediment and foreign matter in the water area, a cylinder installed in the water, water flow generating means for generating a water flow in the cylinder, and a collection net arranged in the cylinder A separation device was used to separate the sediment component and foreign matter using the water flow, and the separated foreign matter was recovered with a collection network, and the separated sediment was allowed to sink to the bottom of the water. (For example, see Patent Document 5).

特開2006−167588号公報JP 2006-167588 A 特開2013−000739号公報JP2013-000739A 特開平11 −137910号公報Japanese Patent Laid-Open No. 11-137910 特開2002−254063号公報JP 2002-254063 A 特開2011−202501号公報JP 2011-202501 A

しかしながら、浚渫土砂には、木片やその他の不法投棄物等のそれぞれ大きさや比重の異なる異物が含まれ、上述の如き従来の技術では、浚渫土砂を異物と土砂成分とを十分に分離させることが困難で、その為、上述の如き分離作業とは別に、別途人力等による分離を必要とする場合が生じ、その分の作業時間、作業費用が嵩むと共に、異物の分離効率が低下するおそれがあった。   However, dredged soil contains foreign matter having different sizes and specific gravity, such as pieces of wood and other illegal dumped items, and the conventional technology as described above can sufficiently separate dredged soil from foreign matter and sediment components. Therefore, in addition to the above-described separation work, separation by human power may be required separately, which may increase work time and work cost and reduce the separation efficiency of foreign matter. It was.

また、陸域に設置されたトロンメルや振動篩等の篩を用いた分離装置では、分離作業を進めるうちに木片等の異物が網目部分に絡みついたり、篩の網目に目詰まりを生じたりするため、その除去に手間がかかり、その分の作業時間が嵩み効率が悪いという問題があった。   In addition, in a separation device using a sieve such as a trommel or a vibrating sieve installed on land, foreign matter such as wood chips may get entangled with the mesh part or clog the mesh part of the sieve as the separation work proceeds. There is a problem that the removal takes time and the work time is increased and the efficiency is low.

一方、上述の如き水中での土砂分離方法においては、更なる作業性や安全性の向上が望まれている。   On the other hand, further improvement in workability and safety is desired in the method for separating soil in water as described above.

更に、回収された異物混在土砂又は土砂成分が付着したままの木片等は、陸域では産業廃棄物として扱われ、運搬・処理・再利用を行う上で様々な関係法令に基づく規制を受ける。よって、土砂成分と木片等の異物とは、陸揚げ前の段階の水域で分離し、再利用(リサイクル)し易い状態にしてそれぞれ回収することが望ましい。   Furthermore, the collected foreign matter mixed earth and sand pieces or the wood pieces with the earth and sand components attached thereto are treated as industrial waste in the land area and are subject to regulations based on various related laws and regulations when transported, processed and reused. Therefore, it is desirable that the earth and sand components and the foreign matters such as wood pieces are separated in the water area at the stage before landing and recovered in a state where they can be easily reused (recycled).

そこで、本発明は、このような従来の問題に鑑み、所望の水域で浚渫土砂を効率よく木片やゴミ等の異物と砂等の土砂成分とに分離することができる土砂分離装置及び浚渫土砂の分離方法の提供を目的としてなされたものである。   Therefore, in view of such a conventional problem, the present invention provides an earth-and-sand separator and an earth-and-sand separator that can efficiently separate dredged sand into foreign matters such as wood fragments and dust and earth-and-sand components such as sand in a desired water area. The purpose is to provide a separation method.

上述の如き従来の問題を解決するための請求項1に記載の発明の特徴は、所望の水域にて異物が混在した浚渫土砂を前記異物と土砂成分とに分離するための土砂分離装置であって、水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、該土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備え、 前記土砂分離用容器の移動により生ずる水流及び前記振動発生手段による振動を利用して前記土砂分離用容器内に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離し、且つ、分離された土砂成分のみを前記土砂透過部を通して前記水底部に沈降させるようにした土砂分離装置にある。   The feature of the invention described in claim 1 for solving the conventional problem as described above is an earth and sand separating apparatus for separating dredged soil mixed with foreign matters in a desired water area into the foreign matters and earth and sand components. A floating body installed on the water, a support frame supported on the floating body so as to be vertically movable, a vertical drive means for vertically moving the support frame between an upper limit position and a lower limit position, and the lower limit position A bottomed cylindrical earth and sand separating container supported by the support frame so that the lower part is submerged in water and movable relative to the support frame, and vibration generating means for vibrating the earth and sand separating container And the earth and sand separation container is provided with a net-like earth and sand transmission part at least on the bottom surface, and the earth and sand separation part is utilized by utilizing the water flow generated by the movement of the earth and sand separation container and the vibration generated by the vibration generating means. A sand and sand separator that separates dredged soil that has been mixed with the foreign matter that has been thrown into the vessel into a sediment component and a foreign matter, and that only the separated sediment component settles to the bottom of the water through the sediment transmission portion. is there.

請求項2に記載の発明の特徴は、請求項1の構成に加え、前記土砂分離用容器は、前記上限位置において前記底面部が水上に露出するように前記支持フレームに支持されてなることにある。   According to a second aspect of the present invention, in addition to the configuration of the first aspect, the earth and sand separating container is supported by the support frame so that the bottom surface portion is exposed on the water at the upper limit position. is there.

請求項3に記載の発明の特徴は、請求項1又は2の構成に加え、前記土砂分離用容器の底面縁部にテーパ筒状の水流調整用笠体を備えてなることにある。   A feature of the invention described in claim 3 is that, in addition to the structure of claim 1 or 2, a water-flow adjusting shade body having a tapered cylindrical shape is provided at the bottom edge of the earth and sand separating container.

請求項4に記載の発明の特徴は、請求項1、2又は3の構成に加え、前記土砂分離用容器は、該土砂分離用容器内に空気を噴射する空気供給手段を備えてなることにある。   According to a fourth aspect of the present invention, in addition to the structure of the first, second or third aspect, the earth and sand separating container includes an air supply means for injecting air into the earth and sand separating container. is there.

請求項5に記載の発明の特徴は、請求項1〜3又は4の構成に加え、前記振動発生手段は、前記土砂分離用容器を前記支持フレームに水平移動可能に支持させる可動支持部と、本体部が前記支持フレーム又は浮体に固定され、且つ、ロッド先端が前記土砂分離用容器に連結された水平シリンダとを備え、該水平シリンダの動作により前記土砂分離用容器が水平方向で振動するようにしてなることにある。   According to a fifth aspect of the present invention, in addition to the configuration of the first to third or fourth aspects, the vibration generating means includes a movable support portion that supports the earth and sand separation container on the support frame so as to be horizontally movable. A horizontal cylinder having a main body fixed to the support frame or floating body and a rod tip coupled to the earth and sand separating container, and the operation of the horizontal cylinder causes the earth and sand separating container to vibrate in a horizontal direction. It is to become.

請求項6に記載の発明の特徴は、水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、前記土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備えてなる土砂分離装置を使用し、前記土砂分離装置を所望の水域に設置した後、前記土砂分離用容器に異物が混在した浚渫土砂を投入する浚渫土砂投入工程と、前記上下駆動手段による前記支持フレームの上下移動に連動して前記土砂分離用容器を上下移動させるとともに、前記振動発生手段により前記土砂分離用容器を振動させる分離工程とを繰り返し、前記土砂分離用容器に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離しつつ、前記分離された土砂成分を前記土砂透過部より水底部に沈降させ、然る後、前記土砂分離用容器内に残存した異物を回収する浚渫土砂の分離方法にある。   According to a sixth aspect of the present invention, there is provided a floating body installed on the water, a support frame supported on the floating body so as to be movable up and down, and moving the support frame up and down between an upper limit position and a lower limit position. Up and down drive means, a bottomed cylindrical earth and sand separation container supported by the support frame so that the lower part is submerged in the water at the lower limit position and movable relative to the support frame, and the earth and sand separation And a vibration generating means for vibrating the container, and the earth and sand separating container is provided with a net-like earth and sand transmitting part at least on the bottom surface, and the earth and sand separating apparatus is installed in a desired water area. The earth and sand separating container is moved up and down in conjunction with the earth and sand loading step of loading the earth and sand mixed with foreign matter into the earth and sand separating container and the vertical movement of the support frame by the vertical driving means. And repeating the separation step of vibrating the earth and sand separation container by the vibration generating means, separating the dredged soil mixed with the foreign substances put into the earth and sand separation container into earth and sand components and foreign substances, In the method for separating dredged sediment, the separated sediment component is allowed to settle from the sediment transmitting portion to the bottom of the water, and then the foreign matter remaining in the sediment separating container is recovered.

請求項7に記載の発明の特徴は、請求項6の構成に加え、前記分離工程において、前記上限位置を前記土砂分離用容器の底面が水面上に露出する位置としたことにある。   According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, in the separation step, the upper limit position is a position where a bottom surface of the earth and sand separation container is exposed on the water surface.

請求項8に記載の発明の特徴は、請求項6又は7の構成に加え、前記分離工程において、前記土砂分離用容器内に空気を噴射することにある。   A feature of the invention described in claim 8 is that, in addition to the configuration of claim 6 or 7, air is injected into the earth and sand separation container in the separation step.

本発明に係る土砂分離装置は、上述したように、所望の水域にて異物が混在した浚渫土砂を前記異物と土砂成分とに分離するための土砂分離装置であって、 水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、前記土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備え、前記土砂分離用容器の移動により生ずる水流及び前記振動発生手段による振動を利用して前記土砂分離用容器内に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離し、且つ、分離された土砂成分のみを前記土砂透過部を通して前記水底部に沈降させるようにしたことにより、所望の水域にて効率よく異物混在土砂を土砂成分と木片等の異物とに分離することができ、更に、高い分離効果によって木片等の異物と土砂成分とがそれぞれ再利用可能に分離された状態で回収できるので、関係法令に基づく規制の影響が軽減され、該回収物を資源として再利用(リサイクル)することが容易になる。更に、水中で土砂分離用容器を振動させることで土砂透過部を構成する網状材が洗浄され、目詰まりを防止することができる。   As described above, the earth and sand separator according to the present invention is a earth and sand separator for separating dredged soil mixed with foreign substances in a desired water area into the foreign substances and earth and sand components, and is a floating body installed on water. A support frame supported on the floating body so as to be movable up and down, vertical drive means for moving the support frame up and down between an upper limit position and a lower limit position, and a lower part immersed in water at the lower limit position A bottomed cylindrical earth and sand separation container supported by the support frame and movable relative to the support frame; and vibration generating means for vibrating the earth and sand separation container, and the earth and sand separation container. Is provided with a net-like sediment transmitting part at least on the bottom surface, and is introduced into the sediment separating container using the water flow generated by the movement of the sediment separating container and the vibration generated by the vibration generating means. By separating the dredged soil containing foreign matter into sediment components and foreign materials, and by allowing only the separated sediment component to settle to the bottom of the water through the sediment transmission portion, it is possible to efficiently in the desired water area. Foreign matter mixed earth and sand can be separated into earth and sand components and foreign matters such as wood fragments, and furthermore, foreign matter such as wood fragments and earth and sand components can be collected in a reusable separated state by a high separation effect. The effect of regulations based on the above is reduced, and it becomes easy to reuse (recycle) the collected material as a resource. Furthermore, the mesh material which comprises a sediment transmission part is wash | cleaned by vibrating the sediment separation container in water, and clogging can be prevented.

また、本発明において、前記土砂分離用容器は、前記上限位置において前記底面部が水上に露出するように前記支持フレームに支持されてなることにより、上下移動の際に土砂分離用容器の底面部が水面を通過し、その際の衝撃が土砂透過部を通して異物混在土砂に作用し、異物と土砂成分との分離が促進される。また、土砂分離用容器の底面部を水面上に上げることにより、分離された土砂成分が土砂分離用容器内の水とともに効率良く容器外に排出される。   Further, in the present invention, the earth and sand separation container is supported by the support frame so that the bottom face part is exposed on the water at the upper limit position, so that the bottom part of the earth and sand separation container is moved up and down. Passes through the water surface, and the impact at that time acts on the foreign material mixed soil through the sediment transmitting portion, and the separation of the foreign material and the sediment component is promoted. Further, by raising the bottom surface of the earth and sand separation container above the water surface, the separated earth and sand components are efficiently discharged together with the water in the earth and sand separation container.

更に、本発明において、前記土砂分離用容器の底面縁部にテーパ筒状の水流調整用笠体を備えてなることにより、土砂分離用容器の上下移動に伴って発生する水流が調整され、その水勢が増すことにより異物と土砂成分との分離が促進される。   Furthermore, in the present invention, by providing a tapered cylindrical water flow adjusting cap body at the bottom edge of the earth and sand separation container, the water flow generated along with the vertical movement of the earth and sand separation container is adjusted. Separation of foreign substances and sediment components is promoted by increasing the water force.

更にまた、本発明において、前記土砂分離用容器は、該土砂分離用容器内に空気を噴射する空気供給手段を備えてなることにより、土砂分離用容器が水上に位置する際には、エアブローによる剥離効果によって異物と土砂成分との分離が促進され、土砂分離用容器が水中に位置する際には、エア噴射により水中に気泡が発生し、その気泡の分離効果により異物と土砂成分との分離が促進される。   Furthermore, in the present invention, the earth and sand separation container is provided with an air supply means for injecting air into the earth and sand separation container, so that when the earth and sand separation container is positioned on the water, air blow is used. The separation effect promotes the separation of foreign substances and sediment components, and when the sediment separation container is located in the water, air bubbles are generated in the water by air injection, and the separation of foreign substances and sediment components is caused by the separation effect of the bubbles. Is promoted.

また、本発明において、前記振動発生手段は、前記土砂分離用容器を前記支持フレームに水平移動可能に支持する可動支持部と、本体部が前記支持フレーム又は浮体に固定され、且つ、ロッド先端が前記土砂分離用容器に連結された水平シリンダとを備え、該水平シリンダの動作により前記土砂分離用容器が水平方向で振動するようにしてなることにより、土砂成分を好適に篩落とすことができる。   Further, in the present invention, the vibration generating means includes a movable support portion that supports the earth and sand separation container so as to be horizontally movable on the support frame, a main body portion is fixed to the support frame or the floating body, and a rod tip is provided. And a horizontal cylinder connected to the earth and sand separation container, and the earth and sand separation container vibrates in the horizontal direction by the operation of the horizontal cylinder, whereby the earth and sand components can be suitably sieved.

本発明に係る浚渫土砂の分離方法は、水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、前記土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備えてなる土砂分離装置を使用し、前記土砂分離装置を所望の水域に設置した後、前記土砂分離用容器に異物が混在した浚渫土砂を投入する浚渫土砂投入工程と、前記上下駆動手段による前記支持フレームの上下移動に連動して前記土砂分離用容器を上下移動させるとともに、前記振動発生手段により前記土砂分離用容器を振動させる分離工程とを繰り返し、前記土砂分離用容器に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離しつつ、前記分離された土砂成分を前記土砂透過部より水底部に沈降させ、然る後、前記土砂分離用容器内に残存した異物を回収することにより、所望の水域にて効率よく異物混在土砂を木片等の異物と砂等の土砂成分とに分離させ、分別した状態で回収することができ、関係法令に基づく規制の影響が軽減され、該回収物を資源として再利用(リサイクル)することが容易になる。   The dredged sand separation method according to the present invention includes a floating body installed on water, a support frame supported on the floating body so as to be vertically movable, and the support frame vertically moved between an upper limit position and a lower limit position. Up and down drive means, a bottomed cylindrical earth and sand separation container supported by the support frame so that the lower part is submerged in the water at the lower limit position and movable relative to the support frame, and the earth and sand separation And a vibration generating means for vibrating the container, and the earth and sand separating container is provided with a net-like earth and sand transmitting part at least on the bottom surface, and the earth and sand separating apparatus is installed in a desired water area. In addition, the dredged soil loading step for throwing in the dredged soil containing foreign matter in the sediment separating container and the vertical movement of the support frame by the vertical drive means raise the sediment separating container. While moving, repeating the separation step of vibrating the earth and sand separation container by the vibration generating means, while separating the dredged soil mixed with the foreign matter thrown into the earth and sand separation container into earth and sand components and foreign matters, The separated sediment component is allowed to settle from the sediment permeation section to the bottom of the water, and then the foreign matter remaining in the sediment separation container is recovered to efficiently remove the foreign material mixed sediment in a desired water area. It can be separated into foreign matter such as sand and earth and sand components such as sand and collected in a separated state, the influence of regulations based on relevant laws and regulations is reduced, and the collected material can be easily reused (recycled) become.

また、本発明において、前記分離工程において、前記上限位置を前記土砂分離用容器の底面が水面上に露出する位置としたことにより、上下移動の際に土砂分離用容器の底面部が水面を通過し、その際の衝撃が土砂透過部を通して異物混在土砂に作用し、異物と土砂成分との分離が促進される。   In the present invention, in the separation step, the upper limit position is a position where the bottom surface of the earth and sand separation container is exposed on the water surface, so that the bottom surface portion of the earth and sand separation container passes through the water surface during vertical movement. Then, the impact at that time acts on the foreign material mixed soil through the sediment transmission part, and the separation of the foreign material and the sediment component is promoted.

また、本発明において、前記分離工程において、前記土砂分離用容器内に空気を噴射することにより、土砂分離用容器が水上に位置する際には、エアブローによる剥離効果によって異物と土砂成分との分離が促進され、土砂分離用容器が水中に位置する際には、エア噴射により水中に気泡が発生し、その気泡の分離効果により異物と土砂成分との分離が促進される。   Further, in the present invention, in the separation step, when air is injected into the earth and sand separation container, when the earth and sand separation container is located on the water, the separation of the foreign matters and the earth and sand components by the separation effect by air blow is performed. When the earth and sand separating container is located in the water, bubbles are generated in the water by air injection, and the separation of the foreign substances and the earth and sand components is promoted by the separation effect of the bubbles.

本発明に係る土砂分離装置の一例を示す平面図である。It is a top view which shows an example of the earth and sand separator which concerns on this invention. 同上の正面図である。It is a front view same as the above. 同上の概略断面図である。It is a schematic sectional drawing same as the above. 本発明に係る浚渫土砂の分離方法の各工程の状態を示す概略正面図であって、(a)は浚渫・分離工程、(b)は異物回収工程、(c)は土砂回収工程を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic front view which shows the state of each process of the separation method of dredged material sand concerning this invention, (a) is a dredging / separation process, (b) is a foreign material collection process, (c) is a figure which shows a sediment collection process. It is. (a1)〜(a3)は図4(a)中の分離工程の詳細な状態を示す概略断面図である。(A1)-(a3) is a schematic sectional drawing which shows the detailed state of the isolation | separation process in Fig.4 (a).

次に、本発明に係る土砂分離装置の実施の態様を図1〜図3に示した実施例に基づいて説明する。尚、図中符号Aは水底、符号Bは水面、符号1は土砂分離装置である。   Next, an embodiment of the earth and sand separator according to the present invention will be described based on the embodiment shown in FIGS. In the figure, symbol A is a water bottom, symbol B is a water surface, and symbol 1 is a sediment separator.

この土砂分離装置1は、水上に設置される浮体2と、浮体2上に上下移動可能に支持された支持フレーム3と、支持フレーム3を上下移動させる上下駆動手段と、支持フレーム3に相対移動可能に支持された有底筒状の土砂分離用容器4と、土砂分離用容器4を振動させる振動発生手段とを備え、所望の水域で土砂分離用容器4に投入された異物5が混在した浚渫土砂(以下、異物混在土砂6という)を木片等の異物5と砂等の土砂成分7とに分離できるようになっている。   The earth and sand separating apparatus 1 includes a floating body 2 installed on water, a support frame 3 supported on the floating body 2 so as to be movable up and down, a vertical driving means for moving the support frame 3 up and down, and a relative movement to the support frame 3. The bottomed cylindrical earth-and-sand separation container 4 and the vibration generating means that vibrate the earth-and-sand separation container 4 are supported, and foreign matter 5 introduced into the earth-and-sand separation container 4 is mixed in a desired water area. The dredged soil (hereinafter referred to as foreign matter mixed sediment 6) can be separated into foreign matter 5 such as wood chips and sediment components 7 such as sand.

浮体2は、上下方向で貫通した分離作業部10を中央部に有する矩形枠状に形成され、枠状内部に空隙11を有することにより浮力で水面B部に浮かべられるようになっている。   The floating body 2 is formed in a rectangular frame shape having a separation working portion 10 penetrating in the vertical direction in the center portion, and has a gap 11 inside the frame shape so that it floats on the water surface B portion by buoyancy.

尚、浮体2は、台船等に連結することにより水面B部で安定させ、上下駆動手段が動作する際の安定した反力を確保するようにしてもよい。   The floating body 2 may be stabilized at the water surface B portion by being connected to a carriage or the like so as to ensure a stable reaction force when the vertical drive means operates.

また、浮体2の下方には、下縁が水底Aに着底するように可撓性を有する網目状シート材により円筒状やスカート状等の筒状に形成された汚濁防止膜12が設置され、分離された土砂成分7が周囲の水域に飛散しないようにすることが好ましい。   Further, below the floating body 2, a pollution prevention film 12 formed in a cylindrical shape such as a cylindrical shape or a skirt shape is installed with a flexible mesh-like sheet material so that the lower edge is attached to the water bottom A. It is preferable that the separated earth and sand component 7 is not scattered in the surrounding water area.

この浮体2には、上面部に平坦な作業台部2aが形成され、この作業台部2a上に上下駆動装置を介して上下移動可能に支持フレーム3が支持されている。   A flat work table portion 2a is formed on the upper surface of the floating body 2, and a support frame 3 is supported on the work table portion 2a through a vertical drive device so as to be movable up and down.

上下駆動手段は、作業台部の四隅に上下に向けて立設された油圧シリンダ等の昇降用シリンダ13,13...を備え、作業台部2aに固定されたシリンダ本体部に対しロッド13aが上下方向で出入り動作することによりロッド13aの上端に固定された支持フレーム3が所定の上限位置Puと下限位置Pdとの間で上下移動するようになっている。   The vertical drive means includes elevating cylinders 13, 13... Such as hydraulic cylinders standing up and down at the four corners of the work table portion, and the rod 13a with respect to the cylinder body fixed to the work table portion 2a. The support frame 3 fixed to the upper end of the rod 13a moves up and down between a predetermined upper limit position Pu and a lower limit position Pd.

尚、昇降用シリンダ13,13...のストローク量は、上限位置Puにおいて支持フレーム3に支持された土砂分離用容器4の底面が水面B上に露出し、下限位置Pdにおいて支持フレーム3に支持された土砂分離用容器4の下部が浮体2の分離作業部10を通して水中に没するように設定されている。   It should be noted that the stroke of the elevating cylinders 13, 13... Is such that the bottom surface of the earth and sand separating container 4 supported by the support frame 3 is exposed on the water surface B at the upper limit position Pu, and the support frame 3 is exposed at the lower limit position Pd. The lower part of the supported earth and sand separation container 4 is set so as to be immersed in water through the separation work part 10 of the floating body 2.

支持フレーム3は、互いに間隔を置いて平行に配置された一対のコ字状支持体15,15を備え、両コ字状支持体15,15間に土砂分離用容器4の上端部が相対移動可能に架設され、支持フレーム3の上下動に連動して土砂分離用容器4も上下移動するようになっている。   The support frame 3 includes a pair of U-shaped support bodies 15, 15 arranged in parallel with a distance from each other, and the upper end portion of the sediment separating container 4 is relatively moved between the U-shaped support bodies 15, 15. The earth and sand separation container 4 is also moved up and down in conjunction with the vertical movement of the support frame 3.

各コ字状支持体15,15は、各昇降用シリンダ13のロッド13a上端部に固定された一対の固定部16,16と、各固定部16,16の側縁より鉛直下向きに延出した形状の一対の吊り板部17,17と、両吊り板部17,17の下縁部間に架け渡した形状の支持軌道板部18とを備えて正面視上向きコ字状に形成され、支持軌道板部18が固定部16,16より低い位置に配置されたことにより、支持フレーム3に支持された土砂分離用容器4が下限位置Pdにおいて下部が浮体2の分離作業部10を通して水中に没するようになっている。   Each U-shaped support 15, 15 extends vertically downward from a pair of fixing parts 16, 16 fixed to the upper end of the rod 13 a of each lifting cylinder 13 and the side edges of each fixing part 16, 16. A pair of suspension plate portions 17 and 17 and a support track plate portion 18 formed between the lower edge portions of both suspension plate portions 17 and 17, and formed in a U-shape facing upward as viewed from the front. Since the track plate portion 18 is arranged at a position lower than the fixed portions 16, 16, the earth and sand separating container 4 supported by the support frame 3 is submerged in water through the separation working portion 10 of the floating body 2 at the lower limit position Pd. It is supposed to be.

また、支持フレーム3には、支持軌道板部18と交差する方向で互いに隣り合う固定部16,16に両端部が支持された上向きコ字状の振動発生手段設置部19を備え、この振動発生手段設置部19に支持されて振動発生手段が支持フレーム3と共に上下移動するようになっている。   Further, the support frame 3 is provided with an upward U-shaped vibration generating means installation portion 19 whose both ends are supported by the fixing portions 16 and 16 adjacent to each other in the direction intersecting with the support track plate portion 18, and this vibration is generated. The vibration generating means is moved up and down together with the support frame 3 by being supported by the means installing portion 19.

土砂分離用容器4は、上面が開口した有底筒状の容器本体部20と、容器本体部20の上端開口縁部より外向きに張り出したフランジ状の被支持鍔部21とを備え、被支持鍔部21を両支持軌道板部18,18間に架設することにより、支持フレーム3に支持されるようになっている。   The earth and sand separation container 4 includes a bottomed cylindrical container main body 20 having an open top surface, and a flange-shaped supported gutter 21 projecting outward from an upper end opening edge of the container main body 20. The support frame 21 is supported by the support frame 3 by installing between the support track plates 18 and 18.

尚、被支持鍔部21と支持軌道板部18との間には、被支持鍔部21の下面部又は支持軌道板部18上に回転可能に支持された複数のローラー22a,22a...等からなる可動支持部22を備え、この可動支持部22を介在したことにより支持フレーム3に対し土砂分離用容器4が水平方向で相対移動可能に支持されるようになっている。   A plurality of rollers 22a, 22a, ... rotatably supported on the lower surface portion of the supported saddle portion 21 or on the support raceway plate portion 18 between the supported saddle portion 21 and the support raceway plate portion 18. The movable support portion 22 is provided, and the soil separation container 4 is supported relative to the support frame 3 so as to be relatively movable in the horizontal direction by interposing the movable support portion 22.

容器本体部20は、鋼製の骨組み材を格子状に組み合わせて上端が開口した有底筒状に形成され、骨組み材間の隙間を塞ぐように鋼製の網状材23を固定することにより筒状の周壁部全周及び底面部全面に亘ってそれぞれ土砂成分7のみが透過可能な土砂透過部24が形成されている。   The container main body 20 is formed in a bottomed cylindrical shape having an upper end opened by combining steel framework materials in a lattice shape, and by fixing a steel mesh material 23 so as to close a gap between the framework materials, An earth and sand transmitting portion 24 through which only the earth and sand component 7 can be transmitted is formed over the entire periphery of the peripheral wall portion and the entire bottom surface portion.

土砂透過部24を構成する網状材23は、木片等の異物5が透過不能で、且つ砂等の土砂成分7が透過可能な大きさに網目が形成されている。   The net-like material 23 constituting the earth-and-sand transmitting part 24 is formed with a mesh size so that the foreign material 5 such as a piece of wood cannot penetrate and the earth-and-sand component 7 such as sand can penetrate.

この容器本体部20は、底面縁部に水底A側に拡開したテーパ筒状の水流調整用笠体25を備え、この水流調整用笠体25により土砂分離用容器4の上下移動に伴い容器内に生じる水流が調整され、水勢が増すようになっている。   The container body 20 is provided with a tapered cylindrical water flow adjustment cap body 25 that is widened toward the bottom of the water bottom A at the bottom edge, and the container for the vertical movement of the soil separation container 4 by the water flow control cap body 25. The water flow generated inside is adjusted to increase the water flow.

また、容器本体部20内には、内側面部に支持させた複数のエアノズル26,26からなる空気供給手段を備え、エアノズル26,26より圧縮空気を土砂分離用容器4内に噴射することにより容器内に空気を供給できるようになっている。   The container main body 20 is provided with air supply means including a plurality of air nozzles 26 and 26 supported on the inner side surface, and the compressed air is injected into the earth and sand separating container 4 from the air nozzles 26 and 26. Air can be supplied inside.

振動発生手段は、上述した被支持鍔部21と支持軌道板部18との間に介在させた可動支持部22と、振動発生手段設置部19に固定された支持軌道板部18の長手方向と平行な方向に向けた油圧シリンダからなる水平シリンダ27,27とを備え、水平シリンダ27,27のロッド27a先端が土砂分離用容器4の被支持鍔部21に連結され、水平シリンダ27,27のロッド27aが振動発生手段設置部19に固定されたシリンダ本体部に対し出入り動作することにより土砂分離用容器4が水平方向で振動するようになっている。   The vibration generating means includes a movable support portion 22 interposed between the supported flange portion 21 and the support track plate portion 18 described above, and a longitudinal direction of the support track plate portion 18 fixed to the vibration generation means installation portion 19. Horizontal cylinders 27, 27, which are hydraulic cylinders oriented in parallel directions, and the tips of the rods 27 a of the horizontal cylinders 27, 27 are connected to the supported saddle 21 of the soil separation container 4, and the horizontal cylinders 27, 27 As the rod 27a moves in and out of the cylinder main body fixed to the vibration generating means installation portion 19, the earth and sand separating container 4 vibrates in the horizontal direction.

尚、上述の実施例では、上下駆動手段を油圧シリンダからなる昇降用シリンダ13,13...により構成した例について説明したが、上下駆動手段の構成は、上述の実施例に限定されず、例えば、油圧シリンダに換えて電力により伸縮動作する電動シリンダを用いてもよく、また、浮体上に立設されたガイドレールに支持フレーム3をガイドさせ、電動モータの駆動により支持フレームがガイドレールに沿って上下移動するような構造であってもよい。   In the above-described embodiment, the example in which the vertical drive means is configured by the lifting cylinders 13, 13... Formed of hydraulic cylinders has been described. However, the configuration of the vertical drive means is not limited to the above-described embodiment, For example, an electric cylinder that expands and contracts by electric power may be used in place of the hydraulic cylinder, and the support frame 3 is guided by a guide rail standing on a floating body, and the support frame becomes a guide rail by driving an electric motor. It may be a structure that moves up and down along.

また、上述の実施例では、振動発生手段を水平シリンダにより構成した例について説明したが、上述の如き構成に拘泥されず、例えば、油圧シリンダに換えて電力により伸縮動作する電動シリンダを用いてもよく、土砂分離用容器4を支持フレーム3にリンク機構を介して支持させ、モータ等の駆動装置によりリンク機構を動作させることにより土砂分離用容器4が振動するようにしたものであってもよい。   In the above-described embodiment, the example in which the vibration generating unit is configured by a horizontal cylinder has been described. However, the present invention is not limited to the above-described configuration. For example, an electric cylinder that expands and contracts by electric power can be used instead of the hydraulic cylinder. The earth and sand separation container 4 may be supported by the support frame 3 via a link mechanism, and the earth and sand separation container 4 may be vibrated by operating the link mechanism by a driving device such as a motor. .

次に、上述の如き土砂分離装置1を使用した浚渫土砂の分離方法について図4、図5に基づいて説明する。上述の実施例と同様の構成には同一符号を付して説明する。   Next, a method for separating dredged soil using the earth and sand separator 1 as described above will be described with reference to FIGS. The same components as those in the above-described embodiment will be described with the same reference numerals.

また、図中符号30は、グラブ浚渫船であって、複数のシェルを開閉可能に有するグラブバケット31がクレーン装置32で昇降自在に吊り持ち支持されている。   Reference numeral 30 in the figure denotes a grab dredger, and a grab bucket 31 having a plurality of shells that can be opened and closed is suspended and supported by a crane device 32 so as to be lifted and lowered.

本発明方法では、まず、土砂分離装置1を所望の水域、ここでは、浚渫対象水域に曳航等により移動させ、図4(a)に示すように、グラブ浚渫船30を挟んで浚渫区域の反対側の水域に土砂分離装置1を設置する。尚、当該浚渫区域の水底A部には、木片等の異物5が混在した土砂(以下、異物混在土砂6という)が堆積している。   In the method of the present invention, first, the earth and sand separator 1 is moved to a desired water area, here, a towing target water area by towing or the like, and, as shown in FIG. The earth and sand separator 1 is installed in the water area. Note that earth and sand mixed with foreign matter 5 such as wood chips (hereinafter referred to as foreign matter mixed earth and sand 6) is accumulated on the bottom A of the dredged area.

そして、設置作業完了後、浚渫工程と連動して土砂分離用容器4に異物混在土砂6を投入する浚渫土砂投入工程を行う。   Then, after the installation work is completed, a dredged sand loading process is performed in which the foreign material mixed sand 6 is loaded into the sediment separating container 4 in conjunction with the dredging process.

浚渫土砂投入工程は、例えば、シェルを開いた状態でグラブバケット31を浚渫区域の水底A部に着底させ、その状態からシェルを閉鎖させつつ吊り上げて水底A部に堆積した異物混在土砂6を掴み取り、更にクレーン装置32により海上まで吊り上げ、その状態から、ジブ33を水平方向に反転させグラブバケット31を土砂分離用容器4上に移動させ、土砂分離用容器4上でグラブバケット31を解放し、土砂分離用容器4内に異物混在土砂6を投入する。   In the dredged sand loading step, for example, the grab bucket 31 is settled on the bottom A of the dredged area with the shell open, and the foreign matter mixed earth 6 accumulated on the bottom A by lifting the shell while closing the shell from that state. Grabbed and lifted to the sea by the crane device 32. From this state, the jib 33 is reversed in the horizontal direction, the grab bucket 31 is moved onto the earth and sand separating container 4, and the grab bucket 31 is released on the earth and sand separating container 4. Then, the foreign substance mixed earth and sand 6 is put into the earth and sand separating container 4.

次に、図5(a1)〜図5(a3)に示すように、上下駆動手段による支持フレーム3の上下移動に連動して土砂分離用容器4を上下移動させるとともに、振動発生手段により土砂分離用容器4を振動させる分離工程を行い、異物混在土砂6を木片等の異物5と砂等の土砂成分7とに分離する。   Next, as shown in FIGS. 5 (a1) to 5 (a3), the sediment separation container 4 is moved up and down in conjunction with the vertical movement of the support frame 3 by the vertical drive means, and the sediment is separated by the vibration generating means. A separation step of vibrating the container 4 is performed to separate the foreign material-containing soil 6 into a foreign material 5 such as a piece of wood and a sediment component 7 such as sand.

この分離工程は、まず、図5(a1)に示すように、上下駆動手段の各昇降用シリンダ13,13...を伸長動作させ、上限位置Pu、即ち、土砂分離用容器4の底面部が水面B上に露出する位置まで支持フレーム3を上昇させる(原位置)。   In this separation step, first, as shown in FIG. 5 (a1), the elevating cylinders 13, 13... Of the vertical drive means are extended, and the upper limit position Pu, that is, the bottom surface portion of the sediment separating container 4 is obtained. The support frame 3 is raised to a position where the water is exposed on the water surface B (original position).

次に、図5(a1)〜(a2)に示すように、昇降用シリンダ13,13...を収縮動作させて、支持フレーム3を上限位置より下限位置Pdまで下降させ、それに連動して土砂分離用容器4を下部が水中に没する位置まで下降させる。   Next, as shown in FIGS. 5 (a1) to (a2), the elevating cylinders 13, 13... Are contracted to lower the support frame 3 from the upper limit position to the lower limit position Pd. The earth and sand separation container 4 is lowered to a position where the lower part is submerged in water.

その際、支持フレーム3の上限位置Puを土砂分離用容器4の底面部が水面B上に露出する位置に設定しておくことにより、下降の際に土砂分離用容器4底面部が水面Bを通過し、その際の衝撃が土砂透過部24を通して容器内の異物混在土砂6に作用し、その衝撃により木片等の異物5と砂等の土砂成分7とに分離される。   At that time, the upper limit position Pu of the support frame 3 is set to a position where the bottom surface portion of the earth and sand separation container 4 is exposed on the water surface B, so that the bottom surface portion of the earth and sand separation container 4 and the water surface B are lowered when descending. The impact at that time acts on the foreign substance mixed earth and sand 6 in the container through the earth and sand transmitting part 24, and is separated into the foreign substance 5 such as a piece of wood and the earth and sand component 7 such as sand.

また、土砂分離用容器4が水中を下降する場合、その下降に伴って土砂分離用容器4内に上向きの水流が生じ、水流により容器内の異物混在土砂6が攪拌され、攪拌による分離効果により異物混在土砂6が木片等の異物5と砂等の土砂成分7とに分離される。   Further, when the earth and sand separation container 4 descends in the water, an upward water flow is generated in the earth and sand separation container 4 as it descends, and the foreign substance mixed earth and sand 6 in the container is agitated by the water stream, The foreign substance mixed earth and sand 6 is separated into foreign substances 5 such as wood chips and earth and sand components 7 such as sand.

尚、この土砂分離用容器4の下降により生じる水流は、水流調整用笠体25により調整されて水勢が増し、それにより高い攪拌・分離効果が得られ、木片等の異物5と砂等の土砂成分7との分離が促進される。   The water flow generated by the lowering of the soil separation container 4 is adjusted by the water flow adjusting body 25 to increase the water force, thereby obtaining a high agitation / separation effect. Separation from component 7 is promoted.

そして、図5(a2)〜(a3)に示すように、昇降用シリンダ13,13...を伸長動作させ、再度、支持フレーム3を下限位置Pdより上限位置Puまで上昇させ、それに連動して土砂分離用容器4を底面部が水面B上に露出する位置、即ち、原位置まで移動させる。   Then, as shown in FIGS. 5 (a2) to (a3), the elevating cylinders 13, 13... Are extended, and the support frame 3 is again raised from the lower limit position Pd to the upper limit position Pu. The earth and sand separating container 4 is moved to the position where the bottom surface portion is exposed on the water surface B, that is, the original position.

この土砂分離用容器4の上昇に伴い、土砂分離用容器4が水中を上昇することにより、土砂分離用容器4内には、相対的に下向きの水流が作用し、当該水流により容器内の異物混在土砂6が攪拌され、攪拌による分離効果により異物5と土砂成分7とに分離される。   As the earth and sand separation container 4 rises, the earth and sand separation container 4 rises in the water, so that a relatively downward water flow acts in the earth and sand separation container 4 and the water flow causes foreign matter in the container. The mixed earth and sand 6 is agitated and separated into the foreign matter 5 and the earth and sand component 7 by the separation effect by the agitation.

更に又、土砂分離用容器4の底面部が水面Bを通過し、その際の衝撃が土砂透過部を通して籠内の異物混在土砂6に作用し、その衝撃により異物混在土砂6が土砂成分7と異物5とに分離される。   Furthermore, the bottom part of the earth and sand separation container 4 passes through the water surface B, and the impact at that time acts on the foreign substance mixed earth and sand 6 in the basket through the earth and sand permeable part. Separated into foreign matter 5.

そして、分離された土砂成分7は、土砂分離用容器4の上昇に伴う下降水流に運ばれつつ自重により土砂透過部24を透過し、土砂分離用容器4内の水とともに効率良く容器外に排出され、水底A部に向けて沈降する。   The separated sediment component 7 passes through the sediment transmission part 24 by its own weight while being transported to the descending water flow accompanying the ascent of the sediment separation container 4, and is efficiently discharged out of the container together with the water in the sediment separation container 4. And settles toward the bottom A.

一方、外形の大きい木皮等の異物5は、土砂透過部を通過できずに、土砂分離用容器4内に残存する。   On the other hand, the foreign matter 5 such as a bark having a large outer shape does not pass through the sediment transmitting portion and remains in the sediment separating container 4.

この図5(a1)〜(a3)に示す動作を順次繰り返し、異物混在土砂6を異物5と土砂成分7とに分離しつつ、分離された土砂成分7を土砂分離用容器4の底面部の透過部24より水底部に沈降させる。   The operations shown in FIGS. 5A1 to 5A3 are sequentially repeated to separate the foreign-matter-containing earth and sand 6 into the foreign objects 5 and the earth-and-sand component 7, while the separated earth-and-sand component 7 is removed from the bottom of the earth-and-sand separating container 4 It is allowed to settle to the bottom of the water from the transmission part 24.

また、この分離工程においては、図5(a1)〜(a3)に示す上下移動を繰り返す間、振動発生手段により支持フレーム3に対し土砂分離用容器4を振動、即ち、水平シリンダ27,27の出し入れ動作を繰り返すことにより土砂分離用容器4を支持フレーム3に対し水平往復運動させる。   Further, in this separation step, while repeating the vertical movement shown in FIGS. 5 (a1) to (a3), the earth and sand separation container 4 is vibrated with respect to the support frame 3 by the vibration generating means, that is, the horizontal cylinders 27, 27 are moved. The soil separation container 4 is reciprocated horizontally with respect to the support frame 3 by repeating the loading and unloading operation.

この土砂分離用容器4の振動によって、土砂分離用容器4内の土砂成分7が土砂透過部24を通して篩落とされ、土砂成分7と異物5との分離が促進されるとともに、土砂分離用容器4の下部が水中に没した状態にあれば、土砂分離用容器4の上下移動により生じる水流に加え、土砂分離用容器4の振動による水流が土砂分離用容器4内に生じ、攪拌による分離効果が増して土砂成分7と異物5との分離が促進される。   Due to the vibration of the earth and sand separating container 4, the earth and sand component 7 in the earth and sand separating container 4 is sieved through the earth and sand transmitting portion 24, and the separation of the earth and sand component 7 and the foreign matter 5 is promoted, and the earth and sand separating container 4 If the lower part of the soil is submerged in water, in addition to the water flow generated by the vertical movement of the sediment separating container 4, a water flow caused by the vibration of the sediment separating container 4 is generated in the sediment separating container 4 and the separation effect by stirring is obtained. In addition, separation of the earth and sand component 7 and the foreign material 5 is promoted.

また、水中で土砂分離用容器4を振動させることにより、土砂透過部24を構成する網状材23が洗浄されるので、土砂透過部24の網目の目詰まりを防止することができるようになっている。   In addition, the mesh material 23 constituting the sediment transmitting part 24 is washed by vibrating the sediment separating container 4 in water, so that the mesh of the sediment transmitting part 24 can be prevented from being clogged. Yes.

更に、分離工程においては、土砂分離用容器4内に空気供給手段、即ちエアノズル26,26より圧縮空気を噴射することにより、土砂分離用容器4が水上に位置する際には、エアブローによる剥離効果によって異物5と土砂成分7との分離が促進され、土砂分離用容器4が水中に位置する際には、エア噴射により水中に気泡が発生し、その気泡の分離効果により異物5と土砂成分7との分離が促進されるようになっている。   Further, in the separation step, when the sediment separating container 4 is positioned on the water by injecting compressed air from the air supply means, that is, the air nozzles 26, 26, into the sediment separating container 4, the separation effect by air blow is achieved. The separation of the foreign matter 5 and the earth and sand component 7 is promoted, and when the earth and sand separation container 4 is located in the water, bubbles are generated in the water by the air jet, and the foreign matter 5 and the earth and sand component 7 are separated by the separation effect of the bubbles. Separation is promoted.

そして、図4(a)に示す浚渫土砂投入工程と、図5(a1)〜(a3)に示す土砂分離工程とを所望の回数だけ繰り返し、土砂分離用容器4内に木片等の異物5がある程度溜まったら、上下駆動手段及び振動発生手段を停止する。   4 (a) and the sediment removal step shown in FIGS. 5 (a1) to 5 (a3) are repeated a desired number of times, and foreign matter 5 such as wood chips is contained in the sediment separation container 4. When it accumulates to some extent, the vertical drive means and vibration generating means are stopped.

次に、図4(b)に示すように、グラブ浚渫船30を挟んで土砂分離装置1とは反対側の水域に異物回収船34を移動させ、この異物回収船34に土砂分離用容器4より異物5を積み替えることにより異物5の回収を行う(異物回収工程)。   Next, as shown in FIG. 4 (b), the foreign substance recovery ship 34 is moved to the water area opposite to the earth and sand separator 1 with the grab dredger 30 interposed therebetween, and the foreign substance recovery ship 34 is moved from the earth and sand separation container 4 to the foreign substance recovery ship 34. The foreign material 5 is recovered by transshipment of the foreign material 5 (foreign material recovery process).

この異物回収工程は、土砂分離用容器4内に土砂成分7より分離された状態で残存した木片等の異物5をグラブバケット31により掴み、それをクレーン装置32で吊り上げるとともにジブ33を反転させて異物回収船34上に移動させ、その位置でグラブバケット31を解放して木片等の異物5を異物回収船34上に積み替える。   In this foreign matter collecting step, the foreign matter 5 such as a piece of wood remaining in the earth and sand separating container 4 in a state separated from the earth and sand component 7 is gripped by the grab bucket 31 and lifted by the crane device 32 and the jib 33 is reversed. It moves on the foreign material recovery ship 34, the grab bucket 31 is released in that position, and the foreign material 5, such as a piece of wood, is reloaded on the foreign material recovery ship 34.

次に、異物回収工程が完了したら異物回収船34を移動させ、然る後、その位置に土砂回収船35を移動させるとともに、土砂分離装置1を曳航等により移動させて撤去し、水底A部に沈降した土砂成分7の回収作業を行う(土砂回収工程)。   Next, when the foreign matter collecting step is completed, the foreign matter collecting ship 34 is moved, and then the earth and sand collecting ship 35 is moved to that position, and the earth and sand separating apparatus 1 is moved and removed by towing or the like, and the bottom A part is removed. The collection work of the sediment component 7 settled on the soil is performed (sediment collection step).

この土砂回収工程では、シェルを開いた状態でグラブバケット31を土砂分離装置1が設置されていた水域の水底A部に着底させ、その状態からシェルを閉鎖させつつ吊り上げて水底A部に堆積した土砂成分7を掴み取り、それをクレーン装置32により吊り上げるとともに、ジブ33を水平方向に反転させ、グラブバケット31を土砂回収船35上に移動させ、その位置でグラブバケット31を解放して土砂成分7を土砂回収船35に積み替える。   In this earth and sand recovery process, the grab bucket 31 is settled on the bottom A of the water area where the earth and sand separator 1 is installed with the shell open, and the shell is lifted from the state while being closed and deposited on the bottom A. The gravel sediment component 7 is picked up and lifted by the crane device 32, the jib 33 is inverted horizontally, the grab bucket 31 is moved onto the sediment recovery vessel 35, and the grab bucket 31 is released at that position to release the sediment component. 7 is transshipped to the earth and sand recovery ship 35.

そして、この浚渫工程から土砂回収工程まので一連の各工程を、グラブ浚渫船30を移動させながら行い、所望の水域を浚渫しつつ、その水域で異物混在土砂6を木片等の異物5と砂等の土砂成分7とに再生可能な状態に分離し、且つ、分離された異物及び土砂成分を分別された状態で回収する。   Then, a series of steps from the dredging process to the sediment collection process are performed while moving the grab dredger 30 and dredging the desired water area. The soil and sand component 7 is separated into a recyclable state, and the separated foreign matter and soil and sand component are collected in a separated state.

このように構成された浚渫土砂の分離方法では、土砂分離用容器4の上下移動及び水平移動(水平振動)で生じる水流の攪拌・分離効果に加え、振動による篩い落とし効果によって、異物混在土砂6を木片等の異物5と砂等の土砂成分7とに、所望の水域で効率よく分離することができる。   In the dredged soil separation method configured in this way, in addition to the stirring / separation effect of the water flow generated by the vertical movement and horizontal movement (horizontal vibration) of the sediment separation container 4, the foreign substance mixed sediment 6 Can be efficiently separated into a foreign substance 5 such as a piece of wood and a sediment component 7 such as sand in a desired water area.

そして、浚渫工程と連動して分離工程を行い、且つ、高い分離効果によって木片等の異物5と土砂成分7とがそれぞれ再利用可能に分別された状態で回収できるので、関係法令に基づく規制の影響が軽減され、回収物、即ち土砂成分7と木片等5とをそれぞれ資源として再利用(リサイクル)することが容易になる。   In addition, the separation process is performed in conjunction with the dredging process, and the foreign matter 5 such as wood chips and the earth and sand component 7 can be collected in a reusable and separated state by a high separation effect. The influence is reduced, and it becomes easy to reuse (recycle) the recovered material, that is, the earth and sand component 7 and the wood pieces 5 as resources.

また、異物・土砂回収工程において異物5及び土砂成分7の回収作業を浚渫工程で使用したグラブ浚渫船30を使用して行うことにより、浚渫から異物・土砂回収までの一連の工程をグラブ浚渫船30と土砂分離装置1とで行うことができるので、大幅に工期の短縮と設備費を含めた作業費用の低減を図ることができる。   In addition, the collection process of the foreign material 5 and the sediment component 7 is performed using the grab dredger 30 used in the dredging process in the foreign substance / sediment collecting process, so that a series of processes from dredging to the collection of foreign matter / sediment can be performed Since it can be performed with the earth and sand separator 1, it is possible to greatly shorten the work period and reduce the work cost including the equipment cost.

A 水底
B 水面
1 土砂分離装置
2 浮体
3 支持フレーム
4 土砂分離用容器
5 異物
6 異物混在土砂
7 土砂成分
10 分離作業部
11 空隙
12 汚濁防止膜
13 昇降用シリンダ
15 コ字状支持体
16 固定部
17 吊り板部
18 支持軌道板部
19 振動発生手段設置部
20 容器本体部
21 被支持鍔部
22 可動支持部
23 網状材
24 土砂透過部
25 水流調整用笠体
26 エアノズル
27 水平シリンダ
30 グラブ浚渫船
31 グラブバケット
32 クレーン装置
33 ジブ
34 異物回収船
35 土砂回収船
A Water bottom B Water surface 1 Sediment separation device 2 Floating body 3 Support frame 4 Sediment separation container 5 Foreign matter 6 Foreign matter mixed soil 7 Sediment component 10 Separation work part 11 Air gap 12 Pollution prevention film 13 Lifting cylinder 15 U-shaped support 16 Fixed part Reference Signs List 17 Suspension plate portion 18 Support track plate portion 19 Vibration generating means installation portion 20 Container body portion 21 Supported trough portion 22 Movable support portion 23 Reticulated material 24 Sediment permeation portion 25 Water flow adjustment cap body 26 Air nozzle 27 Horizontal cylinder 30 Grab dredger 31 Grab bucket 32 Crane device 33 Jib 34 Foreign matter recovery ship 35 Sediment recovery ship

Claims (8)

所望の水域にて異物が混在した浚渫土砂を前記異物と土砂成分とに分離するための土砂分離装置であって、
水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、前記土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備え、
前記土砂分離用容器の移動により生ずる水流及び前記振動発生手段による振動を利用して前記土砂分離用容器内に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離し、且つ、分離された土砂成分のみを前記土砂透過部を通して前記水底部に沈降させるようにしたことを特徴としてなる土砂分離装置。
A sand and sand separator for separating dredged soil mixed with foreign substances in a desired water area into the foreign substances and earth and sand components,
A floating body installed on the water, a support frame supported on the floating body so as to be movable up and down, vertical drive means for moving the support frame up and down between an upper limit position and a lower limit position, and a lower portion at the lower limit position A bottomed cylindrical earth and sand separating container supported by the support frame so as to be submerged in water and movable relative to the support frame; and vibration generating means for vibrating the earth and sand separating container. , The earth and sand separation container is provided with a net-like earth and sand transmitting part at least on the bottom part,
Separating the dredged material sand mixed with the foreign matter thrown into the earth and sand separation container using the water flow generated by the movement of the earth and sand separation vessel and the vibration generated by the vibration generating means into the earth and sand component and the foreign matter; and A sediment separating apparatus characterized in that only the separated sediment component is allowed to settle to the bottom of the water through the sediment transmitting portion.
前記土砂分離用容器は、前記上限位置において前記底面部が水上に露出するように前記支持フレームに支持されてなる請求項1に記載の土砂分離装置。   2. The earth and sand separator according to claim 1, wherein the earth and sand separation container is supported by the support frame so that the bottom surface portion is exposed on water at the upper limit position. 前記土砂分離用容器の底面縁部にテーパ筒状の水流調整用笠体を備えてなる請求項1又は2に記載の土砂分離装置。   The earth and sand separation apparatus according to claim 1 or 2, comprising a tapered cylindrical water flow adjusting body at the bottom edge of the earth and sand separation container. 前記土砂分離用容器は、該土砂分離用容器内に空気を噴射する空気供給手段を備えてなる請求項1、2又は3に記載の土砂分離装置。   4. The earth / sand separator according to claim 1, wherein the earth / sand separator is provided with air supply means for injecting air into the earth / sand separator. 前記振動発生手段は、前記土砂分離用容器を前記支持フレームに水平移動可能に支持する可動支持部と、本体部が前記支持フレーム又は浮体に固定され、且つ、ロッド先端が前記土砂分離用容器に連結された水平シリンダとを備え、該水平シリンダの動作により前記土砂分離用容器が水平方向で振動するようにしてなる請求項1〜3又は4に記載の土砂分離装置。   The vibration generating means includes a movable support portion for supporting the earth and sand separation container on the support frame so as to be horizontally movable, a main body portion fixed to the support frame or a floating body, and a rod tip attached to the earth and sand separation container. The earth and sand separator according to claim 1, further comprising a connected horizontal cylinder, wherein the earth and sand separating container vibrates in a horizontal direction by operation of the horizontal cylinder. 水上に設置される浮体と、該浮体上に上下移動可能に支持された支持フレームと、該支持フレームを上限位置と下限位置との間で上下移動させる上下駆動手段と、前記下限位置において下部が水中に没するように前記支持フレームに支持され、且つ、前記支持フレームに対し相対移動可能な有底筒状の土砂分離用容器と、前記土砂分離用容器を振動させる振動発生手段とを備えるとともに、前記土砂分離用容器が少なくとも底面部に網状の土砂透過部を備えてなる土砂分離装置を使用し、
前記土砂分離装置を所望の水域に設置した後、
前記土砂分離用容器に異物が混在した浚渫土砂を投入する浚渫土砂投入工程と、前記上下駆動手段による前記支持フレームの上下移動に連動して前記土砂分離用容器を上下移動させるとともに、前記振動発生手段により前記土砂分離用容器を振動させる分離工程とを繰り返し、前記土砂分離用容器に投入された前記異物が混在した浚渫土砂を土砂成分と異物とに分離しつつ、前記分離された土砂成分を前記土砂透過部より水底部に沈降させ、然る後、前記土砂分離用容器内に残存した異物を回収することを特徴としてなる浚渫土砂の分離方法。
A floating body installed on the water, a support frame supported on the floating body so as to be movable up and down, vertical drive means for moving the support frame up and down between an upper limit position and a lower limit position, and a lower portion at the lower limit position A bottomed cylindrical earth and sand separating container supported by the support frame so as to be submerged in water and movable relative to the support frame; and vibration generating means for vibrating the earth and sand separating container. , Using the earth and sand separation device in which the earth and sand separation container is provided with a net-like earth and sand transmitting part at least on the bottom part,
After installing the earth and sand separator in the desired water area,
In addition to the dredged sand loading step of loading dredged soil containing foreign matter in the sediment separating container, the vertical sanding container is moved up and down in conjunction with the vertical movement of the support frame by the vertical drive means, and the vibration is generated. The separation step of vibrating the earth and sand separation container by means is repeated, and the separated earth and sand component is separated while separating the dredged earth and sand mixed in the earth and sand separation container into earth and sand components and foreign substances. A method for separating dredged sand, wherein the sediment is allowed to settle from the earth and sand permeation section to the bottom of the water, and then the foreign matters remaining in the earth and sand separation container are collected.
前記分離工程において、前記上限位置を前記土砂分離用容器の底面が水面上に露出する位置とした請求項6に記載の浚渫土砂の分離方法。   The method for separating dredged sand according to claim 6, wherein, in the separating step, the upper limit position is a position at which a bottom surface of the earth and sand separating container is exposed on a water surface. 前記分離工程において、前記土砂分離用容器内に空気を噴射する請求項6又は7に記載の浚渫土砂の分離方法。   The method for separating dredged soil according to claim 6 or 7, wherein, in the separating step, air is injected into the earth and sand separating container.
JP2013013056A 2013-01-28 2013-01-28 Sediment separation device and dredged soil separation method Expired - Fee Related JP6048881B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013013056A JP6048881B2 (en) 2013-01-28 2013-01-28 Sediment separation device and dredged soil separation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013013056A JP6048881B2 (en) 2013-01-28 2013-01-28 Sediment separation device and dredged soil separation method

Publications (2)

Publication Number Publication Date
JP2014145158A JP2014145158A (en) 2014-08-14
JP6048881B2 true JP6048881B2 (en) 2016-12-21

Family

ID=51425617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013013056A Expired - Fee Related JP6048881B2 (en) 2013-01-28 2013-01-28 Sediment separation device and dredged soil separation method

Country Status (1)

Country Link
JP (1) JP6048881B2 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4045727B2 (en) * 2000-08-04 2008-02-13 松下電器産業株式会社 Micropart sieving equipment
JP2002119886A (en) * 2000-10-12 2002-04-23 Aqm Kyushu Technos Kk Method and device for separation
JP5706256B2 (en) * 2011-07-06 2015-04-22 五洋建設株式会社 Dredging vessel for dredged soil and its sorting method
JP5706255B2 (en) * 2011-07-06 2015-04-22 五洋建設株式会社 Method for separating mixed materials in dredged soil and sorting device for dredged material used for dredged material

Also Published As

Publication number Publication date
JP2014145158A (en) 2014-08-14

Similar Documents

Publication Publication Date Title
KR101823975B1 (en) Multistage sorting and circulation aggregate recovery system of suspended matter in construction waste
CN105478466B (en) A kind of vehicle-mounted integrated form Soil leaching prosthetic device
KR101259124B1 (en) Device for filtering sewage and waste water
KR100588836B1 (en) Apparatus for separating wastes from the scrapped materials in recycling system of waste materials
JP5706255B2 (en) Method for separating mixed materials in dredged soil and sorting device for dredged material used for dredged material
KR101762830B1 (en) Apparatus for Recovering Gravels and Sands from Waste Ready-Mixed Concrete
JP6048881B2 (en) Sediment separation device and dredged soil separation method
CN113828626A (en) Leaching treatment process of heavy metal-organic contaminated soil
JP5707051B2 (en) Waste material treatment equipment
KR100939175B1 (en) Environment device and method for separation dredging soil
CN107998727A (en) Concrete tank cleaning sullage reclaimer
CN105598068A (en) Cleaning and impurity removing device for recycling construction waste
JP2014125722A (en) Dredged sediment separating method and dredge device to be used for the same
JP6004335B2 (en) Method and apparatus for separating dredged soil
JP5292482B2 (en) Wet sorting device
KR101739115B1 (en) Apparatus for selecting waste by pump type made of waste-concrete and aggregate manufacturing plant by washing with water include this same
JP3741431B2 (en) Method for separating earth and sand from waste mud and waste mud separation device used therefor
KR101601611B1 (en) Equipment for producing recycling aggrete using waste concrete
JP6136049B2 (en) Dredged soil sorting device and dredged soil sorting method
JP5706256B2 (en) Dredging vessel for dredged soil and its sorting method
JP2010042357A (en) Vibrating sieve device
JP6041237B2 (en) Sediment separator and underwater sediment separation method using the same
KR20150048355A (en) Floating matter eliminator for separating system recycled gravel from wastebuilding products
CN216726055U (en) Concrete grit waste water circulation recovery system
CN210121558U (en) Automatic screening equipment for non-cohesive soil

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20151203

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20161007

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20161019

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20161111

R150 Certificate of patent or registration of utility model

Ref document number: 6048881

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees