EP2682528A2 - Dispositif et procédé de dragage de matériau de fond de lit sous lýeau - Google Patents

Dispositif et procédé de dragage de matériau de fond de lit sous lýeau Download PDF

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Publication number
EP2682528A2
EP2682528A2 EP13175430.1A EP13175430A EP2682528A2 EP 2682528 A2 EP2682528 A2 EP 2682528A2 EP 13175430 A EP13175430 A EP 13175430A EP 2682528 A2 EP2682528 A2 EP 2682528A2
Authority
EP
European Patent Office
Prior art keywords
vessel
bed material
discharge means
bed
cutting tool
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.)
Withdrawn
Application number
EP13175430.1A
Other languages
German (de)
English (en)
Other versions
EP2682528A3 (fr
Inventor
Dominique Maria Colette Hubert Durt
Marc De Boom
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.)
Baggerwerken Decloedt and Zoon NV
Original Assignee
Baggerwerken Decloedt and Zoon NV
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 Baggerwerken Decloedt and Zoon NV filed Critical Baggerwerken Decloedt and Zoon NV
Publication of EP2682528A2 publication Critical patent/EP2682528A2/fr
Publication of EP2682528A3 publication Critical patent/EP2682528A3/fr
Withdrawn legal-status Critical Current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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/181—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels including a conveyor
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels
    • 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
    • E02F3/8841—Floating installations wherein at least a part of the soil-shifting equipment is mounted on a ladder or boom
    • 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
    • E02F7/023—Conveying equipment mounted on a dredger mounted on a floating dredger
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/06—Floating substructures as supports
    • E02F9/062—Advancing equipment, e.g. spuds for floating dredgers

Definitions

  • the invention relates to a device for dredging bed material under water.
  • the invention also relates to a method for dredging bed material under water using the inventive device.
  • Dredging operations commonly form part of hydraulic engineering activities, such as for example in port development, tunnel construction, urban development, beach replenishment, coastal protection, installation of power plants, such as wind turbines, mining, environmental improvement and the like.
  • a significant problem in this context is sediment spill.
  • Such sediment clouds can significantly cloud the water and this increased turbidity disturbs the natural environment.
  • a known device for dredging an underwater bed is described in NL-1031253 .
  • the known cutter head is a rotating body which is rotatable about an axis and is formed by a base ring and a boss which is arranged concentrically at a distance therefrom, between which a number of arms extend which are provided with cutting tools, such as teeth. Through-openings are provided between the arms via which the dredged bed material can be discharged.
  • the cutter head is used in combination with a cutter suction dredger (also referred to as a cutter dredger).
  • a cutter dredger comprises a vessel which is anchored to the floor by means of spud piles. The anchorage absorbs the reactive forces occurring during dredging and transmits these to the floor.
  • a suction pipe is attached to the ladder of the cutter dredger which is connected to the cutter head and via which the dredged bed material, mixed with water, is removed.
  • the cutter head is made to rotate and lowered into the water together with the ladder and the suction pipe, usually at an oblique angle, until it touches the floor.
  • the cutter head is then dragged through the floor while rotating by alternately shifting the ladder from port to starboard using winches, in which case the cutter head performs a lateral slewing movement.
  • shifting the cutter dredger by a certain distance and repeating the above-mentioned slewing movement, it is possible to dredge a complete floor surface.
  • the suction pipe is connected to a pump which then pumps the dredge spoil to a barge which is moored alongside via a pressure pipe or directly to a dumping zone.
  • the invention provides a device, comprising a vessel which can be anchored to an underwater bed and having a ladder which can be positioned downwards at an angle into the body of water from the vessel and which is provided with at least one rotating cutting tool at its free end, the cutting tool comprising a number of excavating elements arranged around a common rotation axis, and having a passage for dug-up bed material which adjoins an inlet end of a discharge means for the dug-up bed material, which discharge means comprises a carrier for the bed material which is driven by means of a mechanical drive.
  • An outlet end of the discharge means can discharge at any desired position, but will usually be situated at the location of the vessel, for example on the deck of the vessel.
  • the carrier preferably comprises at least two conveyor belts which rotate in opposite directions of rotation across each other at the same time.
  • the conveyor belts run substantially parallel with one another in the same direction of movement.
  • the conveyor belts are preferably curved in the transverse direction (perpendicular to the direction of movement), and more preferably such that the mutual distance between the conveyor belts is largest at their mid-section and decreases towards the longitudinal edges of the conveyor belts.
  • the rotating cutting tool may in principle comprise any cutting tool which is able to dig up bed material.
  • the at least one rotating cutting tool may comprise a rotating body which is rotatable about an axis and is formed by a base ring and a boss which is arranged concentrically at a distance therefrom, between which a number of supporting arms extend which are provided with cutting tools, for example in the form of cutter bits.
  • the rotating cutting tool comprises a cutter-wheel dredger, in which the cutter-wheel dredger comprises a wheel which is rotatably driven about a horizontal axis and which is provided on the outer circumference with a series of excavating buckets which are distributed along the circumference and whose inlet opening faces forwards viewed in the direction of rotation, and in which the outer circumference of the wheel comprises a passage for dug-up bed material, which passage adjoins the inlet end of the discharge means for the dug-up bed material.
  • the inventive device is therefore advantageously used with a method for dredging bed material under water which comprises the steps of lowering the ladder and the discharge means of the device into the water; loosening the bed material by rotating the cutting tool; carrying away dredged bed material onto the carrier of the discharge means via the passage; and transporting the dredged bed material by driving the carrier.
  • the digging process is only a part of the dredging cycle. This is due to the fact that a relatively large proportion of the cycle is spent displacing (lifting, slewing, easing) and dumping the dredged bed material and excavating bucket. As excavating progresses to greater depths, the proportion of the digging process in the dredging cycle gradually decreases and the dredging cycle thus becomes less efficient.
  • the improved efficiency compared to the bucket dredger known from, for example, US 1,540,276 , in particular with relatively hard floors, is due to the fact that the drive for the digging process and the drive for the (mainly vertical) transportation of the dredged floor have been disconnected.
  • the available digging capacity is relatively limited, since the forces for the digging process have to be transmitted by the drive wheel of the bucket chain, by the bucket chain itself and by each of the buckets in turn.
  • Using larger digging capacities would require each of these parts having to be made stronger, which would result in an excessively heavy and expensive construction.
  • a further advantage of the inventive device is that the speeds of the rotating cutting tool (the rotational speed) and those of the discharge means (the discharge speed) can be selected independently from one another. This further increases efficiency.
  • a device in which the carrier of the discharge means is provided with a covering. This has a positive effect in further reducing the sediment spill.
  • the device comprises a suction pipe which is connected to pump means and which extends from the vessel up to the vicinity of the inlet end of the discharge means.
  • a suction pipe makes it possible to suck up any bed material originating from the discharge means which has collected at the location of the inlet end and discharge it to the vessel.
  • the suction pipe can also create a slight underpressure at the location of the inlet end and the rotating cutting tool, creating an inflow by the cutting tool which can further reduce the turbidity in the surrounding area.
  • the cross section of the suction pipe and the capacity and flow rate of the pump means can be significantly lower than the cross section and capacity of a the suction pipe or pump means which are common for a cutter dredger, for example less than 25%.
  • a device in which at least one outlet end of the discharge means is provided with a scraping device. This makes it possible to catch more sticky bed material, such as clay, as a result of which the efficiency of the dredging process for this type of bed material is increased further.
  • the mechanical drive of the carrier of the discharge means may comprise any drive which is suitable therefor.
  • a suitable embodiment of the device according to the invention comprises a mechanical drive in the form of endless chains running between two wheels, in which at least one wheel is drivable, and the carrier is connected to the chains.
  • the carrier of the discharge means can also be chosen within wide limits, as long as the discharge of dug-up bed material does not take place hydraulically, causing substantial mixing with water.
  • a suitable embodiment of the device comprises a carrier in the form of a conveyor belt.
  • Such a carrier makes it possible to discharge dug-up bed material substantially continuously.
  • the carrier comprises a series of buckets connected to the mechanical drive, in particular for digging up bed material from a relatively great depth, in particular from depths greater than 25 m from the water surface.
  • the discharge means can be placed at a relatively steep angle into the body of water by means of such a carrier, as a result of which it is possible to reach greater depths with the same length of the discharge means.
  • said buckets are of a relatively lightweight design, as a result of which they cannot be used to dig up bed material, but only to transport away the bed material which has been dug up by the cutter-wheel dredger.
  • the device according to the invention comprises one cutting tool which is rotatable about a horizontal axis, and in particular a cutter-wheel dredger which comprises one wheel which is rotatably driven about a horizontal axis and the outer circumference of which is provided with a series of excavating buckets which are distributed over the circumference and whose inlet opening faces forward in the direction of rotation, and in which the outer circumference of the wheel comprises a passage for dug-up bed material.
  • the axis of rotation of the wheel is substantially horizontal, meaning that said axis runs parallel to the water surface.
  • the axis of rotation may be situated in the plane of the ladder to which the cutter-wheel dredger is attached, but preferably extends at right angles to this plane.
  • the cutting tool can also cut in the direction of the axis of the ladder, but in such an embodiment, it is necessary to arrange (inside the digging device) a relatively short mechanical escalator means, such as for example an Archimedean screw part, in order to take the dredged material up to the discharge means.
  • a relatively short mechanical escalator means such as for example an Archimedean screw part
  • a device which comprises two cutting tools arranged on either side of the ladder, preferably cutter-wheel dredgers.
  • two cutting tools arranged on either side of the ladder, preferably cutter-wheel dredgers.
  • a cutter-wheel dredger of an embodiment of the inventive device comprises a wheel which is rotatable about a horizontal axis and is provided with a series of fitted excavating buckets on the outer circumference.
  • the number of excavating buckets can be selected according to the circumstances and the latter are preferably evenly distributed along the circumference.
  • the excavating buckets may be in the form of buckets, with excavating buckets which are substantially U-shaped in the radial cross section of the wheel being preferred. In this case, the legs of the U shape adjoin said outer circumference.
  • Such excavating buckets lack a bottom, thus facilitating the discharge of the dug-up bed material.
  • a passage is provided in the outer circumference, preferably along the entire length between the legs of the buckets, which adjoins a collecting unit which extends into the wheel and which in turn adjoins an inlet end of a discharge means, for example in the form of a number of driven buckets.
  • the cutting tool preferably the cutter-wheel dredger
  • the cutting tool may rotate in such a manner that the excavating buckets move from the bottom to the top, but it is also possible that they operate in the opposite direction.
  • the position of the vessel with the ladder to which the cutting tool is attached has to be fixed in order to be able to excavate in an accurate manner.
  • the vessel can be anchored by lowering spud piles and/or cables. At greater depths, for example more than 35 metres below the water surface, the use of cables is preferred.
  • the occurring reactive forces act (depending on the direction of rotation of the rotating cutting tool) both in a downwards direction, leading to a tendency to pull the vessel deeper into the water, and in a horizontal direction, leading to a tendency to bring the cutting tool out of engagement with the underwater bed to be treated.
  • the horizontal reactive forces can usually be absorbed in a satisfactory manner using spud piles, but at relatively great depths, the bending moments acting on the spud pile become excessive, as a result of which it is no longer economical to use spud piles. It has been found, that the device according to the invention can also be stabilized in a satisfactory manner using cables.
  • a simple embodiment of the device according to the invention is characterized by the fact that the ladder which can be positioned downwards at an angle from the vessel into the body of water comprises the discharge means.
  • the ladder and the discharge means then form part of the same structure which, for example, comprises a truss structure, in which the carrier of the discharge means is accommodated, preferably provided with a covering.
  • a device in which the outlet end of the discharge means adjoins a second discharge means which is situated on deck of the vessel.
  • the second discharge means comprises a carrier which is driven by means of a mechanical drive.
  • a further embodiment of the device according to the invention comprises a device in which the second discharge means extends in the transverse direction of the vessel, and can be moved in translation in the transverse direction. It is then advantageous if the device furthermore comprises a discharge vessel for the dug-up bed material which is moored on at least one side of the vessel, in which an end of the second discharge means adjoins a well of the discharge vessel.
  • an embodiment of the method according to the invention is characterized by a method in which the vessel is anchored to the underwater bed by lowering a spud pile from the vessel, and in which the cutter-wheel dredger is moved across and into the bed by alternately shifting the vessel from port to starboard using winches, in which case the vessel rotates about the spud pile and the cutter-wheel dredger performs a lateral slewing movement.
  • the vessel is anchored to the underwater bed by using anchors which engage with the bed and which are connected to the vessel by means of anchor ropes, and the cutter-wheel dredger is moved across and into the bed according to a path which is determined by the shifting of the vessel by means of the anchor ropes.
  • a further advantage of the device and method according to the invention is the fact that the excavation can be performed to a very precise depth, as a result of which the dug-up underwater bed will exhibit a relatively well-defined and flat surface. This important advantage prevents the unnecessary supply of expensive hydraulic engineering material.
  • the gravel bed required for the foundation of a tunnel construction will require a smaller supply of gravel than is the case with the known method.
  • a device 1 for dredging bed material 2 below the water level 3.
  • the illustrated embodiment comprises a vessel 4 which is anchored to the underwater bed 2 by means of spud piles 5 (the rear spud piles 5 act as an aid for anchoring the vessel temporarily).
  • the vessel is furthermore provided with a ladder 8 which is positioned downwards into the body of water 7 at an oblique angle 6.
  • the ladder 8 comprises a truss structure which is constructed from mutually connected tie members and compression members 80, and which is provided with one cutter-wheel dredger 10 at its free end.
  • the ladder 8 is connected to the vessel 4 so as to be rotatable about a shaft 9.
  • the ladder 8 can be rotated about the horizontal axis by means of cables 11, which can be hauled in, for example, using the winches present on deck (in which case the ladder 8 is pulled up and the angle 6 reduced), or paid out (in which case the ladder 8 is lowered and the angle 6 increased).
  • the ladder 8 furthermore comprises a discharge means for the dug-up bed material in the form of a carrier 13 for the bed material which is driven by means of a mechanical drive 12.
  • the carrier 13 comprises a conveyor belt which conveys dug-up bed material from the bottom to the top in the direction 14 indicated.
  • the conveyor belt is provided with a(n invisible) covering to further prevent sediment spill.
  • the conveyor belt 13 is provided with V-shaped ribs 15 which prevent bed material from sliding downwards.
  • the outlet end 130 of the conveyor belt 13 adjoins a second discharge means in the form of conveyor belt 16.
  • the latter is situated on deck of the vessel 4 and extends in the transverse direction 17 of the vessel 4.
  • the conveyor belt 16 can preferably be moved in translation in the transverse direction 17, both to port and to starboard, as is diagrammatically illustrated by means of the double arrow 18.
  • the translation of the conveyor belt 16 makes it possible for an end 180 of the conveyor belt 16 to adjoin the well 19 of a discharge vessel 20, which is moored on one side of the vessel 4 and which can receive the dug-up bed material.
  • dug-up, relatively dry bed material can be transported to a treatment area by the discharge vessel 20 in a simple manner. Due to the fact that the bed material is relatively dry, dumping it in the treatment area will result in relatively little sediment spill.
  • the illustrated cutter-wheel dredger 10 is connected to the bottom end of the ladder 8 by means of a supporting structure 105 and comprises a wheel 102 which is rotatably driven about a horizontal axis 101 and which is provided on its outer circumference with a series of excavating buckets 103 which are distributed along the circumference and whose inlet opening 105 faces forwards (upwards) viewed in the direction of rotation 104.
  • the excavating buckets 103 of the wheel 102 are U-shaped, with the legs of the U shape adjoining said outer circumference.
  • the excavating buckets 103 are thus not provided with a bottom, but taper slightly in order to make it more difficult for dug-up bed material to fall out.
  • a passage 106 is provided in the outer circumference of the wheel 102, preferably along the entire length between the legs of the buckets 103, which passage 106 adjoins a collecting unit 108 which extends into the wheel 102.
  • the bed material is pushed out of the excavating buckets 103 by a pushing lip 109 which extends substantially along the peripheral direction of the wheel 102.
  • the bed material pushed out of the buckets 103 lands in the collecting unit 108 which in turn adjoins an inlet end 131 of the discharge means 13 which, in the embodiment illustrated in Fig. 3 , has a carrier in the form of a series of holders 132 connected to a mechanical drive, the mechanical drive comprising endless chains 133 extending between two gear wheels (not shown), in which case at least one gear wheel is driven.
  • the wheel 102 of the cutter-wheel dredger 10 is rotated about the axis 101 by means of a rotary motor 110 in the illustrated direction 104, in which case the bottom edges of the excavating buckets 103 come into contact with the underwater bed 2 and detach material therefrom.
  • This material is conveyed onto the deck of the vessel 4 in the above-described manner via the driven holders 132 and, if desired, to the well 19 of the discharge vessel 20.
  • a method is provided in which the ladder 8 is lowered under water by paying out the cables 11 until the cutter-wheel dredger 10 reaches the bottom, in which case the ladder 8 will make a certain angle 6 with the horizontal direction.
  • the cutter-wheel dredger is then made to rotate by means of the rotary motor 110, in which case bed material is detached and collected in the excavating buckets 103.
  • This bed material is discharged to the holders 132 via the passage 106, which holders 132 then convey the dredged bed material onto the deck of the vessel 4 by means of the mechanical drive (12, 133).
  • the vessel 4 can be anchored to the underwater bed 2 by lowering spud piles 5, in which case the cutter-wheel dredger 10 is moved across and into the bed by alternately shifting the vessel 4 from port to starboard by means of anchor ropes 30 operated by winches (which are in turn anchored to the underwater bed 2 by anchors 31), in which case the vessel 4 rotates around the spud pile 5 and the cutter-wheel dredger 10 performs a lateral slewing movement.
EP13175430.1A 2012-07-06 2013-07-05 Dispositif et procédé de dragage de matériau de fond de lit sous l'eau Withdrawn EP2682528A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE201200473A BE1020785A5 (nl) 2012-07-06 2012-07-06 Inrichting en werkwijze voor het baggeren van bodemmateriaal onder water.

Publications (2)

Publication Number Publication Date
EP2682528A2 true EP2682528A2 (fr) 2014-01-08
EP2682528A3 EP2682528A3 (fr) 2014-02-19

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EP13175430.1A Withdrawn EP2682528A3 (fr) 2012-07-06 2013-07-05 Dispositif et procédé de dragage de matériau de fond de lit sous l'eau

Country Status (3)

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EP (1) EP2682528A3 (fr)
AU (1) AU2013206741A1 (fr)
BE (1) BE1020785A5 (fr)

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* Cited by examiner, † Cited by third party
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EP2746463A1 (fr) * 2012-12-18 2014-06-25 Baggerwerken Decloedt en Zoon Appareil, dispositif de dragage et procédé pour transporter un matériau pris dans un liquide
BE1021994B1 (nl) * 2013-07-16 2016-02-02 Deme Building Materials N.V. Baggertuig
EP2966227A3 (fr) * 2014-07-10 2016-03-23 Deme Building Materials N.V. Navire de dragage
CN106836357A (zh) * 2017-03-10 2017-06-13 中国科学院武汉岩土力学研究所 一种河道清淤系统
EP3333326A1 (fr) * 2016-12-09 2018-06-13 Ellicott Dredge Enterprises, LLC Drague ayant des collecteurs hydrauliques modulaires
CN108797685A (zh) * 2018-06-26 2018-11-13 马鞍山松鹤信息科技有限公司 一种挖泥船
CN109881731A (zh) * 2019-03-26 2019-06-14 深圳市翠绿洲环境艺术有限公司 基于黑臭水河的河道生态修复系统及方法
CN110700179A (zh) * 2019-10-22 2020-01-17 温州江航建设有限公司 一种用于水利水电工程的调控系统及其调控方法
CN111776185A (zh) * 2020-06-09 2020-10-16 青海省盐业股份有限公司 一种无动力源采盐船
US20210062453A1 (en) * 2019-09-02 2021-03-04 Zhijun Wang Dredging device
CN113802504A (zh) * 2021-09-29 2021-12-17 关晨 一种市政道路淤泥清理装置
CN113802503A (zh) * 2021-09-29 2021-12-17 关晨 一种市政道路清淤装置
CN114936396A (zh) * 2022-04-28 2022-08-23 中铁长江交通设计集团有限公司 一种基于Civil 3D的疏浚工程量自动生成方法
CN115387418A (zh) * 2021-05-20 2022-11-25 四川中利源建设工程有限公司 一种用于河道清淤疏浚及淤泥干燥的方法
WO2023242538A1 (fr) * 2022-06-15 2023-12-21 Dogbot Technology Limited Appareil d'excavation de matière dans le sol, d'enlèvement de cette matière et de création d'espace souterrain

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CN109138014B (zh) * 2018-09-20 2021-07-09 杜艳阳 一种采矿用可旋转且便于移动的大型旋转挖掘斗轮
CN115467383B (zh) * 2022-10-29 2023-06-02 上海城建职业学院 一种排水渠挖掘设备

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2746463A1 (fr) * 2012-12-18 2014-06-25 Baggerwerken Decloedt en Zoon Appareil, dispositif de dragage et procédé pour transporter un matériau pris dans un liquide
BE1021994B1 (nl) * 2013-07-16 2016-02-02 Deme Building Materials N.V. Baggertuig
EP2966227A3 (fr) * 2014-07-10 2016-03-23 Deme Building Materials N.V. Navire de dragage
EP3333326A1 (fr) * 2016-12-09 2018-06-13 Ellicott Dredge Enterprises, LLC Drague ayant des collecteurs hydrauliques modulaires
CN106836357A (zh) * 2017-03-10 2017-06-13 中国科学院武汉岩土力学研究所 一种河道清淤系统
CN108797685A (zh) * 2018-06-26 2018-11-13 马鞍山松鹤信息科技有限公司 一种挖泥船
CN109881731A (zh) * 2019-03-26 2019-06-14 深圳市翠绿洲环境艺术有限公司 基于黑臭水河的河道生态修复系统及方法
US20210062453A1 (en) * 2019-09-02 2021-03-04 Zhijun Wang Dredging device
CN110700179A (zh) * 2019-10-22 2020-01-17 温州江航建设有限公司 一种用于水利水电工程的调控系统及其调控方法
CN110700179B (zh) * 2019-10-22 2021-02-26 温州江航建设有限公司 一种用于水利水电工程的调控系统及其调控方法
CN111776185A (zh) * 2020-06-09 2020-10-16 青海省盐业股份有限公司 一种无动力源采盐船
CN115387418A (zh) * 2021-05-20 2022-11-25 四川中利源建设工程有限公司 一种用于河道清淤疏浚及淤泥干燥的方法
CN115387418B (zh) * 2021-05-20 2023-12-05 四川中利源建设工程有限公司 一种用于河道清淤疏浚及淤泥干燥的方法
CN113802504A (zh) * 2021-09-29 2021-12-17 关晨 一种市政道路淤泥清理装置
CN113802503A (zh) * 2021-09-29 2021-12-17 关晨 一种市政道路清淤装置
CN114936396A (zh) * 2022-04-28 2022-08-23 中铁长江交通设计集团有限公司 一种基于Civil 3D的疏浚工程量自动生成方法
WO2023242538A1 (fr) * 2022-06-15 2023-12-21 Dogbot Technology Limited Appareil d'excavation de matière dans le sol, d'enlèvement de cette matière et de création d'espace souterrain

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