Shaft Design and Construction Conference
Co-Chaired by Golder’s Dr. Alan Auld, a pioneer in the design of deep mine shafts, the Shaft Design and Construction Conference will bring together shaft designers, constructors, equipment suppliers and mine owners to discuss the latest technology in shaft design and construction.
Golder Presentations
Deep Shaft Sinking Mechanisation Developments
Monday, November 18, 2019
2:15 pm
Traditionally the method of excavation for shaft sinking was by the drill and blast method. To achieve faster sinking rates and provide a safer working environment for personnel, multiple attempts have been made to develop blind shaft boring sinking machines.
Alan Auld, PhD, PEng, is the author of more than 50 papers and articles related to the design and construction of underground structures. Building on a lifetime’s achievement pioneering design in artificial ground freezing and deep mine shafts, Alan provides technical support in all aspects of mining and underground development work.
Design and Construction of Deep Shaft Concrete Linings in the UK
Tuesday, November 19, 2019
9:20 am
Design and construction of deep shaft concrete linings in the UK will be reviewed, to set out the principles for future designs, including the design load to be adopted and Factors of Safety to be used in the design.
Alan Auld, PhD, PEng, is the author of more than 50 papers and articles related to the design and construction of underground structures. Building on a lifetime’s achievement pioneering design in artificial ground freezing and deep mine shafts, Alan provides technical support in all aspects of mining and underground development work.
Assessment of Aging Shaft Linings for Potash and Salt Mines
Tuesday, November 19, 2019
9:50 am
Cast in place concrete shaft linings have been used in many salt and potash shafts sunk in North America over the last 100 years. As the infrastructure owners look to extend the life of their operational assets, maintenance of concrete-lined portions of these shafts must consider the environment and time constraints, throughout inspection, detailed design and construction.
Joe Anderson, P.Eng., Structural Engineer, has 10 years’ experience in the design and construction of shafts and tunnels in competent and unstable ground, utilising structural concrete/sprayed concrete, steel, cast iron and composite linings to resist water and or ground pressures.
Developing a Standardised Approach to Shaft Inspections
Tuesday, November 19, 2019
11:05 am
Shaft inspections are typically conducted visually, and can be challenged by the shaft environment, subjectivity of inspections, unspecific regulations, and inconsistent documentation and personnel. Utilizing a consistent and repeatable approach and innovative 360-degree camera, Golder has been able to increase efficiency, objectivity and repeatability of inspections.
Shaun Gillis, BSc., is an Engineer-in-Training with over 3 years of experience in the mining industry. He is experienced in project management, technical design, and site construction contracting for underground projects, specializing in potash and salt mine shafts throughout Canada and the United States.
Application of Structural-Thermal Modelling to Negate the Need for Movement Joints within a Frozen Mine Shaft
Tuesday, November 19, 2019
11:05 am
To minimize mine shaft maintenance over the long term, some recent Potash mine shaft sinking projects have required the provision of a continuous fully welded waterproof steel liner over a substantial depth to achieve zero water ingress. Key challenges and mitigation measures will be discussed, along with a linked structural-thermal modelling approach to shaft lining design.
Oliver Colbeck, MEng, CEng, is a senior tunnelling specialist has a broad background in structural engineering, and particularly in the design of underground structures including tunnels and shafts. He has over 15 years of international experience working both in civil engineering and mining projects around the world.
Rapid Three-Dimensional Shaft Scanning from Spherical Video with Photogrammetry
Tuesday, November 19, 2019
11:35 am
Detailed 3D surveying of shafts using modern scanning methods can be difficult, time consuming and potentially prone to errors accumulated over the length, while staffed shaft inspections can be prone to human induced errors and have limited repeatability. Remote video inspections offer a potential solution – mounting a spherical camera and lighting system to the skip or lowered remotely on a winch. Video data are then captured over the length of the shaft for a detailed, permanent record of conditions which can be interrogated in detail later without tying up the hoist.
Ryan Preston, MSc., PEng., is a geological engineer with nine years’ experience in mining, specializing in rock mechanics and remote sensing in both surface and underground settings, including in-situ stress testing and geotechnical assessments from surface and underground for hydroelectric tunnels and block cave mining.
Buckling of Circular Rings Under External Pressure in a Confined Environment “Amstutz Buckling” – An Enhanced Approach
Tuesday, November 19, 2019
1:00 pm
“The theory of buckling of shafts and steel tunnel-linings” was published by Ernst Amstutz in 1970 and subsequently commented on by S. Jacobsen in his paper “Buckling of circular rings and cylindrical tubes under external pressure” in 1974. The authors have revised and enhanced Amstutz’s original work to address Jacobsen’s comments on its limitations and to extend its validity over a much wider range of pipe/shaft geometries, including those commonly found in deep mine access shafts.
Alan Pearson, BSc, is a Principal Design Engineer with over 30 years of experience in both design and site supervision, specializing in formulating design procedures from first principals for highly complex unique underground structures.
Accurate Live Measurement for Shaft Alignment During Shaft Sinking or Shaft Remediation
Tuesday, November 19, 2019
2:45 pm
Accurate, easy to obtain and reliable methods of measurement are the cornerstone of shafts and tunnels development. A new methodology utilizing the basic principles of the shaft alignment and adding modern LiDAR, geolocation and survey control tools will be presented, which more completely captures the shaft alignment and stores the information digitally, in a shorter time period than traditional measurement.
Gabino Preciado, BSc, is a Project Manager in shaft and underground excavation, with 14 years of experience in a broad range of operational practice in shaft sinking, mine development and civil tunneling techniques. Particular interest and expertise in rapid excavation, and shotcrete.
For more information, visit the Shaft Design and Construction Conference website.
