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Largest Frozen Ground Excavation in North America For Excavation of Crown Pillar
Ground Freezing on a Large Scale and its Historical Importance in Deep Mine Development
This article reviews past mine projects throughout the world where ground freezing was essential for successful shaft sinking and surface drift construction.
Read MoreNew Design Method for Frozen Earth Shaft Support
The first documented procedures for designing frozen earth structures are over 50 years old, implemented long before the introduction of the Finite Element Method (FEM). Since that time, the development of three–dimensional models has made the traditional and often over–conservative methods relatively obsolete.
Read MoreCoupled Heat Transfer and Groundwater Flow Models for Ground Freezing
Recent software developments have introduced models that couple the traditional heat transfer model with groundwater flow models to evaluate the required freezing time for ground freezing systems and to evaluate the required refrigeration loads. This paper discusses the application of these models and compares them to actual field results on key ground freezing projects.
Read MoreFactor of safety in ground freezing design
[…] of frozen earth structures for shafts, tunnels, and cross passages has evolved since the publication of guidelines in 2002 by the Working Committee of the International Sym -posium on Ground Freezing. The finite element model allows more specific analysis of a frozen structure cross section and adjusting strength parameters based on temperature and time–dependent […]
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