Understanding the Complexities and Challenges in Tunneling Work

Stay safe in tunneling work. Understand the risks, safety measures, and equipment involved in this complex construction activity: Tunneling work poses several inherent risks, including the potential for collapse, exposure to contaminated atmospheres (toxic, flammable, etc.), and hazards associated with heavy plant or equipment operation.

Within the confines of a tunnel, numerous activities unrelated to the actual boring or tunneling work process take place. These encompass the construction of support structures, installation of services, and the development of the tunnel surface. Workers involved in these tasks face additional risks that require effective management, such as heightened noise levels within the enclosed space, the potential for heat stress, considerations for air quality, and the movement of vehicles and mobile plant within confined quarters.

Furthermore, addressing routine matters that would typically be straightforward to manage, like pedestrian routes and the provision of facilities and amenities, becomes intricate due to the enclosed and limited space within a tunnel construction environment. As a result, our approach to risk management in tunneling work extends beyond the primary excavation tasks to encompass the diverse challenges present in the entire tunnel construction setting.

Legislation

The Guide for tunnelling work provides guidance on managing the risks associated with tunnelling work.

Construction in tunneling work

Excavation work is considered construction work under the Work Health and Safety Regulation 2011 and must be carried out in accordance with the relevant regulations

WHS Regulation 2011, Chapter 6 – Construction Work

Safe work method statements in tunneling work

Safe work method statements are required for all high risk construction work, including any construction work that is carried out in or near a tunnel

WHS Regulation 2011, s291 and s299

Notifiable incidents in tunneling work

The following are defined as dangerous incidents and must be notified to Workplace Health and Safety Queensland:

  • the collapse or failure of an excavation or of any shoring supporting an excavation
  • the inrush of water, mud or gas in workings, in an underground excavation or tunnel
  • the interruption of the main system of ventilation in an underground excavation or tunnel

View additional information about the notification of dangerous incidents, including the notification form

Work Health and Safety Act 2011, s35, s36, s37, s38 and s39

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