OPEN PIT SERVICES
PRAGMATIC SOLUTIONS FROM A GEOSCIENCE PERSPECTIVE
BGC provides open pit slope design and support services for a wide range of projects and operations from concept to closure. Our open pit team comprises geotechnical engineers, engineering geologists and hydrogeologists. Our collective experience covers a wide range of deposit types and challenging geotechnical and hydrogeological conditions from projects located around the world.
A deep understanding of the project’s geological and hydrogeological conditions is considered essential for all our open pit projects. BGC designs our site investigation and characterization programs to maximize the amount of useful information and reduce the amount of project uncertainty in the most efficient way possible. To help do this, we have developed a suite of in-house tools to help visualize and assess the distribution of all types of available data. Our team specializes in geotechnical and oriented core logging, downhole televiewer surveys, structural and geotechnical mapping, pneumatic and hydraulic packer testing and sample collection and field testing. Our team also carries out numerous remote sensing applications such as lidar surveys and terrestrial and aerial photogrammetry.
Laboratory Testing & Characterization
Samples of soil and rock are tested at BGC’s state-of-the-art geotechnical laboratory with access to a wide range of specialized testing and full control over quality and schedule. The site investigation and laboratory testing data are used to develop comprehensive models of site geology, structural fabric faulting, geomechanics and hydrogeology.
Analysis & Design
BGC has developed a comprehensive suite of commercial and in-house software to carry out a wide range of analysis and open pit design services. This includes structural geology assessments and discrete fracture networks, limit-equilibrium and numerical slope stability modelling, groundwater flow modelling, rockfall and failure runout assessments, discrete fracture networks, bench breakback assessments and inter-ramp kinematic stability analyses. These analytical skills are combined with our understanding of the geology and our experience to develop practical open pit slope designs, ground support and mitigation designs and pit dewatering and slope depressurization recommendations.
BGC has a unique team of open pit slope designers who have extensive experience with surface and sub-surface displacement and subsidence monitoring for open pits and open pit and underground interactions. Our team specializes in instrumentation design and slope deformation monitoring for surface and subsurface systems. We have experience with siting analyses for robotic prism and terrestrial radar systems. We also carry out lidar surveys and change detection studies and conducts analysis and processing of satellite InSAR data. Our subsurface monitoring capabilities include installation, data collection and analysis of piezometers, time domain reflectometry (TDR) and conventional inclinometers, shape accelerometer arrays and Smart Markers®. BGC has experience supporting clients with data management and processing and developing trigger-action-response-plans (TARPs). Several of our team members have completed graduate degrees on slope monitoring or have industry operational experience with these monitoring systems. Additionally, BGC has a contract with Reutech to provide training and user-support services for their radar systems in North America.
BGC has extensive experience working for operating open pit mines in all kinds of environments. Our operational support services include emergency call outs, analysis and mitigation of instabilities, pushback and expansion studies, developing ground control management plans, risk assessments and assistance with safe work plans, slope documentation and reconciliation of designs, groundwater and surface water management and 3rd party reviews and audits. BGC understands the current regulatory environment and has developed extensive experience providing technical support to our clients throughout the permit application process.