Simulating static pull tests, shear tests and dynamic drop tests to identify basic parameters for subsequent support design
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Authors: Dight, PM Open access courtesy of:
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DOI https://doi.org/10.36487/ACG_repo/2325_31
Cite As:
Dight, PM 2023, 'Simulating static pull tests, shear tests and dynamic drop tests to identify basic parameters for subsequent support design', in J Wesseloo (ed.), Ground Support 2023: Proceedings of the 10th International Conference on Ground Support in Mining, Australian Centre for Geomechanics, Perth, pp. 463-478, https://doi.org/10.36487/ACG_repo/2325_31
Abstract:
There has been a proliferation of dynamic bolts and their testing for support based on laboratory testing and field testing. The advantage of the laboratory testing is that the boundary conditions such as the precision of the hole, the stiffness of the ‘rock’ and the quality of the grout/resin installation can be controlled. The field tests are valuable so long as the boundary conditions affecting the bolt response are well understood. However, the industry is silent on how to take the test results and apply them in the ground pertaining to an operation. This paper will show that not only can the laboratory results be readily simulated using wellestablished geomechanical relationships applied to the known boundary conditions, but with an understanding of the inputs, the field conditions can be replicated showing the likely support response. Design can then follow for operations with more certainty.
Keywords: simulation, static support, dynamic support, shear behaviour, laboratory testing, field testing, bolt behaviour, geomechanical properties, design
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