Excellence in Geotechnical Drilling Services

Legion Drilling is a leading provider of geotechnical drilling and Geotech instrument installation services across Australia. Operating from company depots in Brisbane, Sydney, and Townsville, our fleet of 18 state-of-the-art geotechnical drilling rigs designed for versatility—equally capable of accessing restricted metropolitan sites and remote regional locations.

A Geotech Drilling Contractor with all the toys.

Geotechnical drilling for installation of inclinometers on mountain site

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

Electrical Van Shear Testing equipment
Cored rock in tray from geotechnical drilling

Conventional NMLC through to HQ & PQ Wireline coring.

Hydraulic Packer Testing

Inflatable single and straddle packer systems

Vibrating Wire Piezometer Options

Precision installation of all types of Piezometers using conventional and sonic rigs.

Cone Penetration Testing on a Geoprobe rig

Precision digital CPTu geotechnical data collected in-situ at a high resolution and high speed with difficult access rigs.

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

Seismic CPTu wave image

Choose from wide variety of drilling methodologies to suit any ground conditions fro the accurate installation of inclinometers and inclinometer casing.

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

Standard Penetration Test on sonic rig in remote Australian site

A staple geotechnical test available provided by most geotechnical drilling companies.

Legion Drilling is a leading geotechnical drilling company dedicated to delivering comprehensive and specialized investigation services tailored to your project's unique requirements. Our extensive range of geotechnical services includes:

Geotechnical Diamond Drilling Services

We specialize in geotechnical investigations utilising a variety diamond drilling techniques. Our capabilities encompass conventional NMLC to HQ3 and PQ3 wireline drilling, ensuring high-precision results for our clients. Our experienced geotechnical drillers are adept at navigating complex subsurface conditions to provide accurate and reliable data essential for your project's success. With drilling rigs available in many configurations we have machines suitable for both limited access metropolitan sites and crawler mounted geotechnical drilling rigs for remote locations with poor infrastructure.

Hydraulic Packer Testing

Our hydraulic packer testing services employ inflatable single and straddle packer systems to assess the permeability and hydraulic properties of geological formations. This method is crucial for understanding groundwater flow and pressure conditions, which are vital for the design and safety of structures such as dams, tunnels, and foundations.

Geotechnical Instrumentation Installation Services

Legion offer precise installation of geotechnical instruments, including vibrating wire piezometers, to monitor pore water pressures, and other essential equipment to measure soil and rock behavior. Accurate instrumentation is fundamental for ongoing monitoring and assessment of site conditions, ensuring long-term structural integrity and safety.

Cone and Piezocone Penetration Testing (CPT & CPTu)

Our CPT and CPTu geotech investigations provide detailed geotechnical data by measuring soil resistance and pore pressure during penetration. This technique delivers real-time information on soil stratigraphy, density, and strength, facilitating informed decision-making for foundation design and ground improvement strategies.

Seismic Cone Penetration Testing (SCPTu)

We conduct SCPTu to measure both compression (Vp) and shear wave (Vs) velocities in soils and mine tailings. This data is essential for evaluating soil stiffness, liquefaction potential, and seismic site response, which are critical factors in earthquake-prone regions and for dynamic loading conditions.

Flat Dilatometer Test (DMT) Service

Our flat dilatometer Marchetti test is an in-situ method sensitive to soil stress history and compaction. It provides valuable information on soil deformation properties, lateral stress, and shear strength parameters, aiding in the design of earth-retaining structures and embankments.

Geotechnical Electrical Vane Shear Testing

We offer electrical vane shear testing to estimate undrained and remoulded (residual) shear strength in clays and mine tailings. This test is particularly useful for assessing the stability of soft soils and tailings, informing safe and effective design and construction practices.

Standard Penetration Test (SPT)

Our geotechnical drillers adhere to the highest standards for equipment and methodology, including the Standard Penetration Test (SPT). SPT provides essential data on soil density and strength, which are critical parameters for foundation design and geotechnical analysis. We can provide SPT calibration tests for each of our drilling rigs upon request.

At Legion Drilling, we are committed to delivering precise and reliable geotechnical services that meet the highest industry standards. Our team of experts utilizes state-of-the-art equipment and methodologies to ensure the success of your geotechnical investigation or drilling project.

Contact us today to discuss your specific project needs and discover how our comprehensive geotechnical services can help you achieve your goals with precision and efficiency.