Shear failure analysis of a shallow depth unsupported borehole drilled through poorly cemented granular rock

@inproceedings{Hashemi2014ShearFA,
  title={Shear failure analysis of a shallow depth unsupported borehole drilled through poorly cemented granular rock},
  author={Seyyed Shaker Hashemi and Abuzar Taheri and Noune Melkoumian},
  year={2014}
}
Abstract Adopting an appropriate failure criterion plays a key role in the borehole stability analysis. In this paper the induced stresses on a vertical borehole wall were calculated based on the elastic theory. Then, to predict the stability of a borehole drilled through a poorly cemented sand formation, failure envelopes in different failure criterion domains were derived using the results from a series of precise laboratory tests conducted on solid and hollow cylinder specimens. The mixture… CONTINUE READING