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Depressurisation Drilling

Targeted depressurisation systems that reduce pore water pressures and improve slope stability.

Geovert's Depressurisation Drilling capability is designed to reduce pore water pressure within mine walls and geotechnical slopes. By strategically installing horizontal drain holes into the ground mass, trapped groundwater is allowed to dissipate, reducing hydrostatic pressures that can contribute to instability, movement, or slope failure. Working closely with clients and geotechnical engineers, we develop depressurisation programs tailored to site-specific conditions and integrated with broader ground support and slope stabilisation strategies. This approach delivers measurable improvements in slope performance while supporting safe and productive operations.


Benefits

  • Reduces pore water pressure within slopes and highwalls

  • Improves long-term slope stability and operational safety

  • Supports proactive geotechnical risk management

  • Integrates with ground support and stabilisation programs

  • Engineered to suit site-specific hydrogeological conditions

horizontal depressurisation drilling

Specialist Tools & Equipment for

Depressurisation Drilling

Depressurisation Drilling

In Action.

slope stabilisation 27km highway nz

Transmission Gully Motorway Slope Stabilisation | NZ

Major slope stabilisation package delivered in seismically active, fractured ground conditions

spider excavator drilling large open pit mine

McArthur River Mine West Wall Drilling | AUS

Depressurisation drilling and sensor installation using Spider excavator

horizontal depressurisation drilling slope stabilisation nz

Kawakawa Bay Horizontal Drainage & Depressurisation | NZ

Long-length horizontal drainage drilling to rapidly reduce pore water pressure within an active landslip

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