In order to measure the direct shear strength of rocks in situ conditions we need you to advice the most suitable device/machine for testing. The main goal is to study slope stability.
Hi dear Salome Gogoladze
The following article can help:
https://fenix.ciencias.ulisboa.pt/downloadFile/844562369085592/D4554%20shear%20strength%20discontinuities.pdf
Dear Salome
The following attached materials will be helpful.
Regards
Boakye, K., 2008. Large in situ direct shear tests on rock piles at the Questa Min, Taos county, New Mexico (Doctoral dissertation, New Mexico Institute of Mining and Technology).
Lv, X. and Zhou, H., 2018. Soil–rock mixture shear strength measurement based on in situ borehole pressure-shear tests. Journal of Geophysics and Engineering, 15(5), pp.2221-2234.
Dear Salome,
There are several in-situ tests can be used like in-situ direct-shear test and gallery direct-shear test.
Bests,
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