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Ban Houayxai Feasibility Study - Geophysical Survey.jpg

Ban Houayxai Feasibility Study - Geophysical Survey

Ban Houayxai, Laos

Client Phu Bia Mining/PanAust Limited
Industries Mining
Services Electrical Resistivity Imaging Survey

Golder Associates New Zealand Limited were part of the geotechnical site investigation for a proposed tailings storage facility and raw water dam associated with the Phu Bia Mining Gold-Silver Project in Laos. The site geology is primarily a strong sandstone unit that exhibits `corestone` weathering, leading to a distribution of corestone boulders present within residual soil. The role of Golder Associates was to characterise the subsurface, with a view towards identifying any significant corestones. It will be necessary to ensure that foundation loads are supported by bedrock, rather than corestones.

Our Role
Golder Associates had to characterise the subsurface with a view towards identifying any significant corestones. A range of Electrical Resistivity (ERI) arrays and acquisition setups were tested in order to determine the most effective and efficient approach to surveying at the site. Data collected in the field underwent preliminary processing each evening for QA/QC. This allowed for guidance of the following day`s activities.


ERI surveying was found to be effective at targeting a range of subsurface features, including clear structure, resistive laterite soils and buried corestones. Similar ERI results were observed across the survey site, implying consistent ground conditions. The results also displayed a high level of repeatability, implying that the data collected was of good quality and representative of ground conditions.

Associated Services

Golder provides surface, borehole and offshore geophysical services as a cost-effective, non-intrusive approach for site investigations. The...

Geotechnical Engineering—Soil and Rock Mechanics/Soil, Rock, and Mining Engineering
Golder has been providing solutions to our clients’ ground engineering challenges around the world for 50 years – our geology...

Golder has one of the largest groups of water resources and contaminant hydrogeologists in the world; we have been providing solutions to...

Surface Water/Sediments
Golder staff in New Zealand are able to undertake and find solutions to a wide range of hydrologic, hydraulic and water management problems...

Tailings Management
On a daily basis, Golder Associates works on mines around the world to design, build, operate or close mine waste management facilities,...

Waste Management
Golder assists private and the public sector clients to assess and implement sustainable waste management practices.  We develop...

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