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5 Drienerlolaan
Enschede, Overste, 7522 NB

Zorgvuldige Ondergrondse Aanleg en Reductie Graafschade



Léon olde Scholtenhuis

Four workshops are/will be conducted to identify onsite risks. During workshops at HZC and Soma College (a professional institute and machine operator school) we will get in touch with experts that perform excavation work in urban and rural areas. We primarily focus on health and safety risk, and the risk of damaging utilities.

After the first workshops we found that:

  • Utility maps (KLIC melding) are used to identify cables and pipes in/nearby excavation areas. In general, older maps are less reliable.
  • Trees, railway power lines, and high voltage power lines within 35 meter reach of the excavator are dangerous when located above ground.
  • Ammunition / explosives should be located before digging. When there are no maps, visual inspection is needed.
  • Soil pollution reports are delivered by the foreman. Soil polluted with volcanic ashes, coal ashes, asbestos require protective work practices.
  • Trees may grow through utilities and cause risk of damage during excavation.
  • Machine operators also learn to read and feel the underground. They often sense, based on experience and years of practice, whether they are at potential risk.

The dates, location and goals of the workshops are as follows:

April 19; HZC - Identifying On-Site Safety risks (operators)

May 22; SOMA College - Assessing and Ranking On-site Safety Risks (operators)

June 12; SOMA College - Assessing and Ranking On-site Safety Risks (work planners)

July 12; HZC - Assessing and Ranking On-site Safety Risks (operators)

Public Data types

Léon olde Scholtenhuis

These is a first list of potentially relevant data types that the team composed. This list will be reviewed during four upcoming workshops at the SOMA College (an excavator training school) and HZC (professional organization for excavator operators).

Project Plan

Léon olde Scholtenhuis

Project duration: Jan 2017 - Mar 2018

Project team:

Dr. Léon olde Scholtenhuis (University of Twente)

Dr. Farid Vahdatikhaki (University of Twente)

Dr. Sisi Zlatanova (TU Delft)

Dr. Jakob Beetz (Eindhoven University of Technology)

Dr. Pieter Pauwels (University of Gent)

In collaboration with:

Municipality of Rotterdam


ExcaSafeZone’s objective is to develop an automated system that generates excavation safety maps to enable urban planners, contractors and excavator operators to make more informed decisions about where and how to conduct excavation activities safely. We propose using the promising Linked Data techniques to integrate relevant data sources from public agencies and the web (e.g. Cadastral maps, utility maps, images, soil information, height maps, and historical information). Next, we consult experts to define logical rules for extraction of safety risk information from the linked data. The linked data combined with expert knowledge help define the safety levels for excavation activities on a particular construction site. Eventually, this culminates in a prototype system that creates Excavation Safety Zones based on available linked data, contributing to better excavation planning and, reduction of excavation damage.