Projects

Deformation Monitoring at Maasbracht Lock, NL

Maasbracht, The Netherlands
Project duration:  2025 – 2026

A geodetic deformation study was carried out at the Maasbracht lock using GNSS-based sensor technology. This pilot project evaluates a new acquisition method to detect subtle expansion and contraction along the lock walls. Continuous monitoring strengthens data-driven asset management and enhances collaboration multiple departments of Rijkswaterstaat.

Basetime GNSS sensors supporting Maasbracht Lock deformation monitoring in the Netherlands, providing continuous measurements to detect subtle wall movements.

Direct insight into lock movements to prevent the jamming of the doors and ensure continuous navigational availability.

Project Purpose

The objective is to monitor longitudinal deformation of the lock walls. Previous measurement results and higher safety standards prompted the use of an alternative and independent technique, providing more reliable detection of structural movement over time.

Implemented Solution

Eight GNSS sensors were installed on the central lock chamber, supported by one stable reference station outside the lock. Each sensor collects four measurements per day over a full annual cycle. The configuration provides position accuracy of 2 mm (X/Y) and 4 mm (Z), enabling continuous and precise deformation monitoring.

Key Results

Technical Requirements

Continuous insight into linear wall displacement.

Independent confirmation of earlier indicators.

Stronger basis for asset management decisions.

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Number of Locator One units: 8

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Measurement frequency: 4 measurements per day

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Accuracy: position 2 mm (X/Y), height 4 mm (Z)

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Baseline length: 1,500 meters

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Reference station: 1 stable base station outside the lock

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Logging time: 5 minutes