EP0438683A1 - Procédé et dispositif pour poser du matériau fin sur le fond de l'eau et des talus au cours de dragage - Google Patents

Procédé et dispositif pour poser du matériau fin sur le fond de l'eau et des talus au cours de dragage Download PDF

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Publication number
EP0438683A1
EP0438683A1 EP90123525A EP90123525A EP0438683A1 EP 0438683 A1 EP0438683 A1 EP 0438683A1 EP 90123525 A EP90123525 A EP 90123525A EP 90123525 A EP90123525 A EP 90123525A EP 0438683 A1 EP0438683 A1 EP 0438683A1
Authority
EP
European Patent Office
Prior art keywords
diffuser
floating
fine
pumped
embankment
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
Application number
EP90123525A
Other languages
German (de)
English (en)
Other versions
EP0438683B1 (fr
Inventor
Wolfgang Rohr
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.)
Rohr GmbH
Original Assignee
Rohr GmbH
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 Rohr GmbH filed Critical Rohr GmbH
Publication of EP0438683A1 publication Critical patent/EP0438683A1/fr
Application granted granted Critical
Publication of EP0438683B1 publication Critical patent/EP0438683B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8833—Floating installations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/121—Devices for applying linings on banks or the water bottom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/02—Conveying equipment mounted on a dredger
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/10—Pipelines for conveying excavated materials

Definitions

  • the invention relates to a method for applying very fine material to the ground and the embankments of the wet surface mine, in which the fine material is brought together with the sand and gravel material obtained to a processing plant, where it is separated from the usable material and then to the ground and the embankments the removal point of the wet surface mine is applied.
  • a landscape ecological report via the extraction point, which should include the following areas: an inventory of the vegetation and land use, the wildlife, the protected areas / protected areas according to nature conservation and Water law, planning projects and public interests.
  • appropriately qualified drilling must be carried out to assess the occurrence of raw materials. The results of the drilling are to be evaluated. It is particularly important for the waterproofing of the sea to determine the quantity and composition of the fine particles of the subsoil. Based on the assessment of the resulting fine substances, a soil mechanics report must be prepared, which specifies in particular the minimum thickness of the sealing layer for the permeability coefficient of the sealing material.
  • Sand and gravel mining under water is carried out as follows.
  • the top layers in the topsoil and the clearing material are removed and reused according to the plan approval procedure.
  • Floating grapples and pneumatic excavators are used for great depths and bucket chain excavators, suction excavators and scrapers for shallower depths.
  • the sand and gravel material obtained is brought to a processing plant on land via conveyor belts, pipeline transport or ship transport.
  • This system processes sand and gravel in accordance with the applicable DIN regulations for concrete aggregates, road building materials and the like.
  • the preparation is usually done with water.
  • Non-usable material mostly fine materials such as silt, fine sand below 100 ⁇ are returned to the mining area.
  • the gravel processing plants are often arranged directly on the dredgers. The very fine and sludge materials are therefore returned to the quarry pond, namely from the area of the processing plant. This introduction of the fine substances takes place in an uncontrolled manner.
  • the invention is based on the object of proposing a method and a device with or with which the application of the finest grain under water is controllable in order to seal the ground and embankment of the wet surface mine and thus to separate the groundwater system from the water of the surrounding aquifer.
  • This object is achieved according to the invention in that excreted fines are completely captured, pumped via a flexible delivery line to a precisely defined location of the bottom and / or embankment of the wet surface mine, which is regularly laid, pumped and applied there via a discharge in a certain amount.
  • An advantageous process step provides that the slurrable substances are pumped to an underwater diffuser and applied by the latter.
  • a further process step provides for the interim storage of very fine material or overburden with the addition of water to the diffuser system.
  • An advantageous device for applying very fine material on the ground and / or embankment of wet surface mining according to the method consisting of a extraction device, a processing plant for the sand and gravel mixture with a device for separating the water-fine substance mixture, is that the device for separating of the water-fine substance mixture is connected via a pump and a pipeline to at least one underwater diffuser, which is attached to a floating station and, in order to discharge the fine material directly at the bottom and / or the slope, with its opening directed towards the bottom or the slope Ground or the embankment is arranged.
  • a further advantageous embodiment provides that the floating pipeline and the diffuser are anchored to the floating body of the swimming station, the Pipeline is arranged on a swiveling boom system with a hoist.
  • the diffuser is flanged to a pivotable tube of the boom system.
  • the fine substances can be collected in a basin, which is connected to the diffuser by means of a line laid partly on land and partly floating.
  • a diffuser is connected via lines to the pool and the floating treatment plant at the same time.
  • a second diffuser is connected to the processing plant.
  • the diffuser be formed like a plate on its conical part, air inlet and air outlet guides being provided laterally above an abrasion plate.
  • the invention has the essential advantage that new raw material reserves can be tapped via a controlled seal without endangering the protection of the groundwater. On the contrary, the protection of the groundwater is significantly increased compared to conventional mining methods and the use of dredging area is minimized. With smaller and deeper water areas, the often mentioned problem of water evaporation is also kept to a minimum.
  • groundwater horizons withheld from drinking water production can be protected against contamination by sealing the sand and gravel extraction points.
  • FIG. 1 shows the top view of an excavator lake according to a mining plan, the excavator lake being divided into five mining sections I to V. After excavation section I is dredged, it is sealed using the method according to the invention.
  • the dredger 1 is shown with processing system 3, which is connected to the land via conveyor belts 27.
  • a treatment plant 3 ' is also provided on land, to which a landfill 31 is assigned, where overburden and fines are collected.
  • a collecting container or basin 14 is also provided, to which a further floating line 4 to a further diffuser 16 is connected. The fine parts are pumped to the diffuser 16 via this basin 14 with pump 32.
  • FIG. 2 shows the hyddrogeological section of such a gravel mining site and the lake 24 formed there.
  • the lake floor 12 or the embankments 13 are provided with a layer of fine substances 19 as a sealing application.
  • the individual clay layers are clearly visible and hatched, with individual clay lenses 26 remaining due to the dredging.
  • sand and gravel material is conveyed by means of a dredger 1 with a gripper 2 lowered to the ground.
  • This material is processed in a processing plant 3 arranged on the excavator 1 in accordance with the DIN regulations.
  • the resulting fines are pumped via a floating pipeline 4 to an underwater diffuser 5, which is arranged on a swimming station 6.
  • the swimming station 6 has a floating body 7 on which a pivotable boom system 8, 9 is arranged.
  • the boom system 8.9 is also provided with a hoist 10.
  • the floating pipeline 4 is anchored on the float 7, with a pivotable pipe 11 connecting to the diffuser 5.
  • the diffuser 5 has the task of removing the very fine material from the pumps on the lake floor 12, without causing any significant clouding of the water, by reducing the flow rate and thickening the material. Furthermore, the design of the diffuser 5 is to be selected so that the fine sludge concentrates and settles relaxed on the bottom 12 of the embankment 13. The application of the layer thickness can be controlled and monitored automatically.
  • the entire underwater diffuser system can be moved using windlasses after the required layer thickness has been reached. This process can also be automated.
  • the sealing material is to be introduced with a corresponding dismantling progress (Fig. 1), first a final depth is created with a mining device, then with the progressive dismantling the released sea sole 12 or embankment 13 is sealed with the system . Until the final depth is reached, the very fine material can also be deposited on land in polder basins or containers 14 (FIGS. 1 and 4) (landfill 31), in order then to be available for later sealing. As shown in FIG. 4, the gravel with the finest particles comes from the excavator 1 to the gravel processing plant 3 'via a conveyor belt 33. Likewise, suitable mining material can be supplied to the collecting basin 14 with the simultaneous addition of water to the diffuser 5 via the pump 32.
  • connection of the swimming station 6 takes place here via a section of a pipeline 15 laid on land, which then merges into the floating pipeline 4.
  • the method described is also suitable for lowering existing dredging lakes.
  • a second underwater diffuser 16 is also used, which is used depending on the mining plan.
  • This diffuser 16 is connected via a floating line 4 to collecting basins 14 arranged on land. It is also possible to feed a diffuser 5 or 16 via both lines 4.
  • FIG. 6 shows how the diffuser 5 applies the components that can be drained off to the lake floor 12 and to the embankment 13.
  • the grain size of these fines is less than 100 ⁇ , for example in a range between 0 and 0.063 mm.
  • FIG. 7 shows the embodiment of such a swimming station 6.
  • This swimming station 6 is fastened to the lake floor 12 with the aid of an anchor 17.
  • the sludge layer 19 is applied by the diffuser 5.
  • FIG. 8 A possible embodiment for the diffuser 5 or 16 is shown in FIG. 8.
  • the diffuser has a conical part 20 which widens towards the bottom 12 and merges into a plate-shaped section 21.
  • the bottom of the diffuser has an abrasion plate 22 that slopes from the center to both sides and is designed at its edge as an impact plate 23.
  • the fine material is discharged with little turbulence via discharge openings 25.
  • the sludge inflow takes place in the direction of arrow 28.
  • At the upper end of the conical tube 29 there is a screw-on flange 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Treatment Of Sludge (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP90123525A 1990-01-20 1990-12-07 Procédé et dispositif pour poser du matériau fin sur le fond de l'eau et des talus au cours de dragage Expired - Lifetime EP0438683B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001630A DE4001630C1 (fr) 1990-01-20 1990-01-20
DE4001630 1990-01-20

Publications (2)

Publication Number Publication Date
EP0438683A1 true EP0438683A1 (fr) 1991-07-31
EP0438683B1 EP0438683B1 (fr) 1995-05-24

Family

ID=6398470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123525A Expired - Lifetime EP0438683B1 (fr) 1990-01-20 1990-12-07 Procédé et dispositif pour poser du matériau fin sur le fond de l'eau et des talus au cours de dragage

Country Status (4)

Country Link
US (1) US5150986A (fr)
EP (1) EP0438683B1 (fr)
AT (1) ATE123097T1 (fr)
DE (2) DE4001630C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869224A1 (fr) * 1997-03-28 1998-10-07 Van Oord Acz B.V. Procédé et dispositif pour décharger des matériaux dragués
WO1998044207A1 (fr) * 1997-03-28 1998-10-08 Van Oord Acz B.V. Procede et dispositif d'immersion de deblais de dragage
EP1698730A2 (fr) * 2004-12-21 2006-09-06 Johann Bunte Bauunternehmung GmbH & Co. KG Dispositif mobile pour l'application in situ de revêtements d'argile sur le fond de canaux
CN111501886A (zh) * 2020-05-12 2020-08-07 青田合页环保科技有限公司 一种河道自动清淤设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5428908A (en) * 1993-03-09 1995-07-04 Kerfoot; William B. Apparatus and method for subsidence deepening
US5775836A (en) * 1996-03-05 1998-07-07 Dean, Jr.; Americo Capping device for uniform capping of subaquatic sediments
DE19900279C1 (de) * 1999-01-07 2001-02-01 Wolfgang Rohr Verfahren und Vorrichtung zur Rückgewinnung von Feinsand von einem schwimmenden Gewinnungsgerät
US7695215B2 (en) * 2008-06-06 2010-04-13 J.F. Brennan Co., Inc. Method and system for broadcast sediment capping
CN101429773A (zh) * 2008-12-05 2009-05-13 郑星昱 扰沙系统及方法
KR101766307B1 (ko) * 2010-06-18 2017-08-23 노틸러스 미네랄즈 퍼시픽 피티 리미티드 해저 채광을 위한 시스템
ITTO20110551A1 (it) * 2011-06-23 2012-12-24 Trevi Spa Procedimento per impermeabilizzare casse di colmata
US9162263B2 (en) 2011-12-22 2015-10-20 Sevenson Environmental Services, Inc. Barge system for hydraulic spreading of aquatic capping material
CN104264729B (zh) * 2014-09-09 2016-05-18 浙江海洋学院 一种lng绞吸挖泥船
IT201900007839A1 (it) * 2019-06-03 2020-12-03 Bartolomeo Mongiardino Sistema per il dragaggio dei fondali sommersi
CN112359902B (zh) * 2020-10-15 2022-03-11 安徽博雅园林建筑有限公司 一种基于道路建设施工的节能环保的建筑施工用骨料开采机
CN113718702B (zh) * 2021-09-28 2023-02-17 上海市地矿工程勘察(集团)有限公司 一种河道开挖卸荷对既有隧道保护施工工艺

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1632946A (en) * 1925-03-11 1927-06-21 Brunig Victor Process for the production of canals
US2880981A (en) * 1958-01-30 1959-04-07 Socony Mobil Oil Co Inc Method and system for producing oil tenaciously held in porous formations using a dredging operation
FR1593900A (fr) * 1968-12-02 1970-06-01
FR2027466A1 (fr) * 1968-12-31 1970-09-25 Heilmann Littmann Bau Ag
DE2005995A1 (de) * 1970-02-10 1971-08-26 Heinrich Hirdes Gmbh, 4100 Duisburg Vorrichtung zum Verlegen von Abdich tungs und/oder Befestigungsmassen
US3972137A (en) * 1974-04-24 1976-08-03 Societe Generale De Constructions Electriques Et Mecaniques (Alsthom) Dredging installation
AU8530275A (en) * 1975-09-30 1977-04-07 Bos Kalis Westminster Group N.V. Method and apparatus for conveying dredged material froma floating suction dredger toan end station
GB1526348A (en) * 1976-10-06 1978-09-27 Toko Constr Co Ltd Method for vegetation of faces of slopes and vegetation materials therefor

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Publication number Priority date Publication date Assignee Title
FR665961A (fr) * 1928-08-03 1929-09-25 Moorbau G M B H Procédé et appareil pour la construction des canaux
US3161438A (en) * 1961-07-12 1964-12-15 Milton J Novak Underwater dredge with separating means
US3731975A (en) * 1971-11-18 1973-05-08 Qva Corp Apparatus and process for undersea mining of mineral bearing sand and gravel
CA1135063A (fr) * 1980-08-05 1982-11-09 Jan O. Den Velde Methode d'amenagement d'une ile artificielle
US4896445A (en) * 1980-12-30 1990-01-30 Deal Troy M Method for reducing costs and environmental impact of dredging
JPS6351512A (ja) * 1986-08-21 1988-03-04 Oosakawan Kaihatsu Kanri Kk 土、砕石および砂の直撒き工法および直撒き用投入枠付き台船

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1632946A (en) * 1925-03-11 1927-06-21 Brunig Victor Process for the production of canals
US2880981A (en) * 1958-01-30 1959-04-07 Socony Mobil Oil Co Inc Method and system for producing oil tenaciously held in porous formations using a dredging operation
FR1593900A (fr) * 1968-12-02 1970-06-01
FR2027466A1 (fr) * 1968-12-31 1970-09-25 Heilmann Littmann Bau Ag
DE2005995A1 (de) * 1970-02-10 1971-08-26 Heinrich Hirdes Gmbh, 4100 Duisburg Vorrichtung zum Verlegen von Abdich tungs und/oder Befestigungsmassen
US3972137A (en) * 1974-04-24 1976-08-03 Societe Generale De Constructions Electriques Et Mecaniques (Alsthom) Dredging installation
AU8530275A (en) * 1975-09-30 1977-04-07 Bos Kalis Westminster Group N.V. Method and apparatus for conveying dredged material froma floating suction dredger toan end station
GB1526348A (en) * 1976-10-06 1978-09-27 Toko Constr Co Ltd Method for vegetation of faces of slopes and vegetation materials therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869224A1 (fr) * 1997-03-28 1998-10-07 Van Oord Acz B.V. Procédé et dispositif pour décharger des matériaux dragués
WO1998044207A1 (fr) * 1997-03-28 1998-10-08 Van Oord Acz B.V. Procede et dispositif d'immersion de deblais de dragage
EP1698730A2 (fr) * 2004-12-21 2006-09-06 Johann Bunte Bauunternehmung GmbH & Co. KG Dispositif mobile pour l'application in situ de revêtements d'argile sur le fond de canaux
EP1698730A3 (fr) * 2004-12-21 2007-07-04 Johann Bunte Bauunternehmung GmbH & Co. KG Dispositif mobile pour l'application in situ de revêtements d'argile sur le fond de canaux
CN111501886A (zh) * 2020-05-12 2020-08-07 青田合页环保科技有限公司 一种河道自动清淤设备
CN111501886B (zh) * 2020-05-12 2020-12-08 诸暨市智盈智能技术服务部 一种河道自动清淤设备

Also Published As

Publication number Publication date
ATE123097T1 (de) 1995-06-15
US5150986A (en) 1992-09-29
DE4001630C1 (fr) 1991-10-17
DE59009140D1 (de) 1995-06-29
EP0438683B1 (fr) 1995-05-24

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