Abstract
A computational model is described to simulate the magma-driven formation of dike and sill structures. This analysis can provide a number of forensic insights into the stress conditions that may exist in deep level mining operations or in the extraction of oil or gas reserves within a specific geotechnical environment. The paper describes the numerical simulation of a vertically propagating dike sheet and the subsequent intersection and fluid branching of magma into a horizontal plane of weakness (sill). This study represents a preliminary exploration of the intersection problem using a uniform fixed grid mesh which allows some insights to be gained into the field stress conditions that control the dike propagation through the plane of weakness or which can lead to the deflection of the magma flow and subsequent sill structure formation. An approximate method is introduced to represent the crack tip opening shape assuming zero toughness at the dike edges. Some future extensions to an unstructured moving element mesh representation are noted.
Original language | English (US) |
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Title of host publication | Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022 |
Editors | Alphose Zingoni |
Publisher | CRC Press/Balkema |
Pages | 471-476 |
Number of pages | 6 |
ISBN (Print) | 9781003348443 |
DOIs | |
State | Published - 2023 |
Event | 8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022 - Cape Town, South Africa Duration: Sep 5 2022 → Sep 7 2022 |
Publication series
Name | Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022 |
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Conference
Conference | 8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022 |
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Country/Territory | South Africa |
City | Cape Town |
Period | 9/5/22 → 9/7/22 |
Bibliographical note
Publisher Copyright:© 2022 the Author(s).