Monitoring Pavement Relief of the Hume Highway During Undermining

 

The Hume Highway (M31) is arguably Australia’s most important piece of transport infrastructure carrying around 45,000 cars, trucks and bases per day which equates to $22 billion dollars’ worth of goods each year.

In 2006 it was proposed to undermine the Hume with a series of long wall panels near Douglas Park, NSW, which would obliquely undermine the dual carriageway causing subsidence of up to 1 m.  At the time the potential economic loss due to mining impacts on M31 without mitigation was estimated to be around $125M. At the time PSM were invited to be part of a technical committee that would oversee the prediction, measurement and mitigation of impacts. Six years later the fourth longwall panel is nearing completion while the mitigation strategies have allowed the highway to operate continuously without incident and with minimal delays to traffic.

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PSM is approved by the Queensland Government, Department of Transport and Main Roads (TMR)

PSM is approved by the Queensland Government, Department of Transport and Main Roads (TMR) under its Engineering Consultant Prequalification System (CFEP) in the following disciplines and levels:

  • Geotechnical Engineering: GE 3
  • Hydraulic Design: HD 2

The CFEP is used to prequalify engineering consultants based on their technical skills, available resources and managerial capability to undertake projects for TMR under its Engineering Consultant Scheme (ECS). Geotechnical Engineering GE 3 prequalification category represents the highest geotechnical prequalification category. PSM is prequalified to conduct geotechnical planning and design studies for any TMR project in Queensland.

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