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The Arabian Canal
Dr. Nedal Al-Hanbali
Head – Geomatics Information System Department
LIMITLESS LLC
Dubai, UAE
Abstract
Limitless LLC, a business unit of Dubai World, is an integrated real estate development firm based in Dubai. One of its current projects, the Arabian Canal, is the largest and most complex civil engineering project ever conducted in the Middle East. A 75 km waterway surrounded by both public space for leisure and community events as well as all types of commercial, residential and entertainment real estate is to be built in Dubai. The amount of earth moved each day must be accurately measured to meet three critical requirements: progress against plan, as-built against plan, and invoicing. Progress reports on the number of cubic meters of earth moved each day allow the project managers to accurately track the project and to quickly identify any slowdowns that need addressing. An accurate 3D map of the dig provides a fast and efficient means for continuously monitoring the dig against the plans and for making adjustments as necessary. The volume of earth moved is used to validate the invoices submitted by the subcontractors working on the project.
Two mobile mapping platforms were chosen: a helicopter based Applanix DSS with LMS-Q240 LIDAR option, and a land vehicle based Applanix LandMark. The Applanix DSS produces directly georeferenced high-resolution orthomosaic color image maps and high-accuracy 3D terrain measurements in the form of laser point clouds and digital surface models. Similarly the LandMark produces georeferenced oblique video imagery and high density laser point clouds. The land and airborne data sets used to produce a high-accuracy, high-density 3D terrain model of the dig with built in redundancy. Various techniques are followed to do integration, in addition to building special quality control procedure to assure quality and precision.
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