Joint Venture VPC & SPE - Swalf Dredging Info MARPO CSD... · Joint Venture VPC & SPE ... for Cutter Suction Dredgers ... In addition to the dredger operation further technical data

Joint Venture VPC & SPE

Kleiberweg 20, D-21244 Holm-Seppensen, Germany; Phone: +49-4187 -312306; Fax: +49-4187-7492 email: [email protected]

presents:

MARPO

DREDGE OPERATION MONITORING SYSTEM

A State of the Art Dredging Control System for Cutter Suction Dredgers

and Trailing Hopper Suction Dredgers

CSD in Operation (on-board view)


DOMS/ Dredge Operation Monitoring System MARPO_DGPS

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THSD in Operation (on-board view)



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1 PURPOSE The DREDGE OPERATION MONITORING SYSTEM offered by VPC & SPE was designed to especially enhance mining operations. This positioning system will prove valuable in the dredging industry. When installed the DREDGE OPERATION MONITORING SYSTEM will offer information to the dredge master and to the operation manager about: # Dredging model indicating obstacles, intercalated layers etc. # Field limits, slope tilts, dredge levels, tolerance levels # Center Lines including distance from actual line, manual or automatically choosing

next center line (import via ACAD – dxf or dwg files) # Thickness to be dredged at the position of the dredge # Actual position of dredger (typical accuracy < 2 m) # Present position of dredging tool (clamshell, backhoe, cutter head/-wheel, plain

suction head, tumbler) # Horizontal and vertical deviation of the suction pipe by integrating onboard

measurement tools # alerts if dredging tool is endangered by means of exceeding horizontal or vertical

limits # Productive and non-productive operating times # Success of area-wide dredging by preparation of informative maps, cross sections and

quantity surveys 2 DESCRIPTION OF OPERATION Relevant data of dredging plans can either be generated by VPC or be placed at VPC & SPE disposal by the customer. These data are integrated in the software of the custom-build computer, before it will be installed on the dredger. The position of the dredger will be determined by DGPS (GPS on board, reference station on shore). The reference station data is transferred to the computer by radio. The system is operational with reduced accuracy even without presence of a reference station.



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The depth, inclination and deviation of the dredging tool will be determined by on-board measuring tools while its position will be taken off a digital compass. These positional data of the dredging tool will be transferred to the computer and interpreted by its software. Changes in water level will be integrated manually or automatically by optional radio gauge or by the DGPS-system (please refer to the typical height accuracy of DGPS Systems). By a optional echo-sound device the dredged area will be scanned continuously and changes of morphology of the bottom of the dredging area is indicated. Alternative for slow moving dredgers a 360° sonar device is available to scan the surrounding area. The range of the sonar is a direct function of the depth, i.e. for a 30m deep pit the coverage is about 100m. In addition to the dredger operation further technical data of the dredger or other related tools can optionally be registered related to the actual position of the dredger. All data can be analysed using the office program. Furthermore, devices like sieves, booster stations, conveyor belts etc. can be remotely controlled from the MARPO system. Alternatively the MARPO can be used to remotely run and control the dredger from the site office or even through the internet. The positional data handled by the computer can be viewed by the dredge master on a touch-screen monitor and will be presented by three graphs. (graph I: position of the dredger, graph II: position of the dredging tool, graph III: 3D-presentation of the dredging area, graph IV: data of other equipment). Positional and time data are being updated and saved on hard disc constantly and can easily be transferred to the operation manager onboard or at the headquarter for further interpretation with the included interpretation software (among others preparation of maps of dredging areas/dredged thickness/depth-contour intervals, cross-sections, calculation of dredged volumes and many more). The included office program allows the manager to review the technical and economical factors of the dredging works such as the dredging performance, quality and effectivity. Furthermore the dredging work can be supervised by giving the dredge master border guidelines or quality limits.



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3 SCOPE OF SERVICE / OPTIONAL ITEMS Preparation and Commissioning

Interpretation and integration of existing data on first dredge plan as well as on the morphology of the sea bed and design horizon, delivery and commissioning of the system, basic survey of the reference station (once at start up)

Determination of the Position

Dual GPS-receiver with land based reference station (for DGPS) or virtual based reference station (VBS), Pentium IV ™-PC, cables, 17’’ touch-screen-colour monitor(s), software for the dressing of the data on board as well as for the interpretation in the office (MS-Windows XP/7).

Position of the Dredging Tool

Sensors, digital compass function within Dual DGPS, inclinometer OPTIONAL Radio Transmission (between reference station and dredge) Transmission and receiver stations, antennas, Radio Gauge board and land stations, inclinometer, antenna, cable Depth measurement

Echo-sounder devices Remote Control Dredger Related tools UMTS – GPRS remote display of operation and program maintenance



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Screens available on board of the dredger

Screen 1 (large scale)

Position of dredging tool, borders and quality of dredging effort (quality marks, see lower left, with 5 different colours to be selected by client)

Screen 1 (small scale)

Position of dredge head relative to the contour of dredger



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Screen 2: (large scale) Cross-section of terrain-map (see direction in blue-green bar in Screen 1)

incl. position of dredge head, designed slopes (red line), and layers for different types of soil

Screen 2 CSD (small scale)



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Screen 2 THSD (small scale)

Screen 3: Digital Sea-Map for a optimal orientation of the dredge



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Screen 4: Residuals within dredging area

(displayed in real time during dredging process)

Screen 4:

3D-Map of dredging area (optional by sonar or echosound) incl. position of dredging tool



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Alternative screen:

night view



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Combined Screen Dredger, Production data: The screens can be arranged freely by the clients design so that the

information can be shown on separate or combined views



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Screens available in the office all screens can be printed out in correct scales (plotter, ink-jet, laser printer)

Screen 1: Overview dredging area

Screen 2: Area and quality of dredging operation

through red/blue marks (red = above tolerance, blue = within tolerance) incl. possibility of volume calculation



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Screen 3 : Construction of a cross-section in desired heading and length, calculation of volumes & productions

Screen 4 : Constructed cross-sections with orignal depth (brown), dredged depth (black), on-line sounded / real (blue)

and designed slope (red)



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Screen 5: Review of days, weeks, months of dredging operation to show in above mentioned screens

Screen 6: Automatic volume calculation of user defined areas (volume dredged, volume within pit, residual volume after dredging etc.)



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840

2080

23752435 2425

105

23952320

2545

22852150

755

19352030

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0

500

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Prod

uctio

n [t/

day]

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.2005

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.2005

day

Production 1. to 19. Oktober 2005

Calculation of production and efficiency

through data collection on dredger,

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Documents

Joint Venture VPC & SPE - Swalf Dredging Info MARPO CSD... · Joint Venture VPC & SPE ... for Cutter Suction Dredgers ... In addition to the dredger operation further technical data