In-Situ Geotechnical Testing

In-situ testing enables measurement of multiple geotechnical parameters with relatively minor disturbance of soils and mine tailings. Legion Drilling’s in-situ testing capabilities include Cone/Piezocone Penetration Testing (CPT/CPTu), Seismic CPTu (SCPTu), Marchetti Flat Dilatometer Test (DMT) and Electrical Vane Shear Testing.

Typical benefits of these technologies include:

  • Rapid collection of high-density data;

  • Cost effectiveness compared to conventional sampling and laboratory testing;

  • Real-time data visualisation;

  • Improved assessment of uncertainties in geotechnical investigations.

High-quality samples can be collected in adjacent locations using direct push technology or other sampling methods.

Legion Drilling is one of the most versatile geotechnical drilling contractors in Australia with our major clients including engineering firms, mining companies, Australian Defence, tailings storage facilities, dams and major government infrastructure projects. With the addition of Sonic drilling rigs and these in-situ testing systems to our drill rig fleet, we can offer a comprehensive service for any geotechnical site investigation.

Cone & Piezocone Penetration Testing (CPT & CPTu)

Precision geotechnical data and drilling capacity in a single machine.

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Seismic CPTu (SCPTu)

Measurement of both compression and shear wave velocities (Vp, Vs) in mine tailings and soils.

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Flat Dilatometer Marchetti Test (DMT)

In-situ test sensitive to soil stress history and compaction.

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Electrical Vane Shear Testing

Estimation of undrained and remoulded (residual) shear strength in clay and mine tailings.

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Standard Penetration Test (SPT)

Meeting standards for equipment and methodology.

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3D Visualisations

There is no more powerful way to present information to stakeholders and design cost-effective solutions.

Featured
Site Screening to Closure – Brisbane, Sydney & Melbourne
Site Screening to Closure – Brisbane, Sydney & Melbourne

We are excited to present the 2nd Workshop on Advanced Technologies for Integral Contaminated Land Management, featuring an even larger delegation of North American experts for 2024.

Webinar Series on Advanced Characterisation and Remediation Methods
Webinar Series on Advanced Characterisation and Remediation Methods

The next presentations will be dedicated to MiHPT (Membrane-Interface & Hydraulic Profiling Tool) and UVOST (Ultra-Violet Optical Screening Tool), two direct sensing tools that have revolutionised the way we investigate contaminated sites thanks to their high resolution and real-time visualisation capabilities.

Sustainable site investigation with Direct Sensing Tools (HRSC)
Sustainable site investigation with Direct Sensing Tools (HRSC)

At this point, 20+ years into the development of direct sensing technology there have been a multitude of arguments presented touting the technical and financial advantages of High-Resolution Site Characterisation (HRSC) using Membrane Interface Probe (MIP), Ultra-Violet Optical Screening Tool (UVOST) and Hydraulic Profiling Tool (HPT). 

Numac now in Cairns with Geoprobe 7822DT
Numac now in Cairns with Geoprobe 7822DT

To better service north QLD clients we now have a Geoprobe 7822Dt operating from a satellite base in Cairns Australia.

MIP-8006 - 5 graph (003).jpg
Introducing the MiHPT -

The new probe detects volatile contaminants with the MIP, measures soil electrical conductivity with a standard (MIP) dipole array, and measures HPT injection pressure using the same down-hole transducer as the Geoprobe® stand-alone HPT system.

Cleanup 2017 Keynote: Laser Induced Fluorescence
Cleanup 2017 Keynote: Laser Induced Fluorescence

As Australia's leading provider of High Resolution Site Characterisation (HRSC), Numac welcomes back David Heicher from Dakota Technologies for his keynote presentation at Cleanup 2017:

QUT GROUNDWATER RESEARCH PROJECT.
QUT GROUNDWATER RESEARCH PROJECT.

Using tracers to Investigate aquifer recharge. A wide a range of tools wre employed to gather data including monitoring wells, the Hydraulic Profiling Tool (HPT), Geoprobe push tube soil sampling and the SP16 groundwater sampler in this investigation.

Hydraulic Profiling Tool (HPT) added to the HRSC arsenal
Hydraulic Profiling Tool (HPT) added to the HRSC arsenal

The HPT provides a continuous hydrostratigraphic log of the subsurface that provides relative hydraulic conductivity of the formation.  Soil lithology is also mapped along the vertical profile of the subsurface. Identify pathways and calculate permeability and static water levels in real time...

Numac Introduces Ultra Violet Optical Screening Tool to australia (UVOST
Numac Introduces Ultra Violet Optical Screening Tool to australia (UVOST

Run on a Geoprobe drilling rig, the UVOST systems makes for a much more productive day in the field. Real time delineation LNAPL plumes can be conducted with speed and with complete confidence. There is a greatly reduced requirement for soil sampling, laboratory analysisand groundwater wells.