Published Journal Papers

Note: Bold names are or have been grad and undergrad students in my team (besides my name in bold); Italic names are or have been grad students, for whom I serve as a dissertation committee member or co-advisor (besides the journal and conference names!).

  1. Shandilaya, S. and Roshankhah, S. (2025) ”Mechanisms and Consequences of Failure in Jointed Rock Slopes: Impact of the Strength Reduction Scheme and Continuous Joint Dip Angle,” Journal of Rock Mechanics and Rock Engineering, doi.org/10.1007/s00603-025-04775-3.
  2. He, C., Sadeghpour, H., Shi, Y., Mishra, B., and Roshankhah, S. (2024) ”Mapping Distribution of Fractures and Minerals in Rock Samples Using Res-VGG-UNet and Threshold Segmentation Methods.” Journal of Computers and Geotechnics., 175, doi.org/10.1016/j.compgeo.2024.106675.
  3. Roshankhah, S., Garcia, A.V., and Santamarina, J.C. (2021) ”Thermal Conductivity of Sand-Silt Mixtures.” Journal of Geotechnical and
    Geoenvironmental Engineering. 147(2), doi.org/10.1061/(ASCE)GT.1943-5606.0002425.
  4. Roshankhah, S., Cruz, L.G., Shin, H., Lizcano, A., and Santamarina, J.C. (2019) ”Kinematic Dilation During the Hydraulic Stimulation of Pre-fractured Rocks.” Geotechnique Letters, 9(2), doi.org/10.1680/jgele.18.00173.
  5. Angulo-Ruiz, A., Roshankhah, S., and Hunt, M.L. (2019) ”Elasto-plastic Surface Deformation and Rebound for Normal Particle-Wall Collisions in
    Various Fluids.” Journal of Fluid Mechanics, 871, 1044-1066, doi.org/10.1017/jfm.2019.349.
  6. Bachus, R.C., Roshankhah, S., Santamarina, J.C., et al. (2019). ”Characterization and Engineering Properties of Dry and Ponded Class-F Fly
    Ash.” Journal of Geotechnical and Geoenvironmental Engineering, 145(3), 1-11, doi.org/10.1061/(ASCE)GT.1943-5606.0001986.
  7. Roshankhah, S., Rosakis, A.J., Viggiani, G., Andrade, J.E., et al. (2018). ”Neutron Imaging: A New Possibility for Laboratory Observation
    of Hydraulic Fractures in Shale?” Geotechnique Letters, 8(4), 316-323, doi.org/10.1680/jgele.18.00129.
  8. Roshankhah, S. and Santamarina, J.C. (2014). ”Engineered Granular Materials for Heat Conduction and Load Transfer in Energy Geotechnology.” Geotechnique Letters, 4(2), 145-150, doi.org/10.1680/geolett.14.00001.

Published Conference Articles

  1. Roshankhah, S. and Shandilaya, S. (2026) ”Property Degradation of Natural Fractures and Rock Matrix on Failure Mechanisms and Consequences in Jointed Rock Slopes,” The 21st International Conference on Soil Mechanics and Geotechnical Engineering, June 14-19, Vienna, Austria.
  2. Shandilaya, S. and Roshankhah, S. (2026) ”Evaluation of Rock Fractures in the Laboratory Using Acoustic Emission Measurements and Digital Image Correlation,” GeoCongress, March 9-12, Salt Lake City, UT, USA.
  3. Shandilaya, S. and Roshankhah, S. (2025) ”Hydro-Mechanical Interactions between the Permeable Matrix and Natural Fracture Network in CO2 Geological Storage,” The 59th US Rock Mechanics/Geomechanics Symposium, June 8-11, Santa Fe, NM, USA.
  4. Matey-Korley, V.G., Shandilaya, S., Kim, S.H., Roshankhah, S., Okoroafor, E.R. (2025) ”How Are Nanoindentation-based Hardness/Modulus and Bulk
    Tensile Strength of Olivine-Rich Rocks Related?,” The 59th US Rock Mechanics/Geomechanics Symposium, June 8-11, Santa Fe, NM, USA.
  5. Alasadi, A., Potyondy, D., Ghassemi, A., and Roshankhah, S. (2025) ”DEM-Based Analysis to Reveal the Effects of Particle Size Distribution on Deformational Behavior of Particulate Packs,” The 50th Stanford Geothermal Workshop, Feb. 10-12, Stanford, CA.
  6. Shandilaya, S. and Roshankhah, S. (2024) ”Laboratory Evaluation of Natural Fracture/Hydraulic Fracture Interactions Using Digital Image Correlation.” The 58th US Rock Mechanics/Geomechanics Symposium, Golden, CO, June 25-29, 2024.
  7. Shandilaya, S. and Roshankhah, S. (2024) ”Failure Mechanisms in Jointed Rock Slopes concerning the Dip Angle of Continuous Joints.” The 58th US Rock Mechanics/Geomechanics Symposium, Golden, CO, June 25-29, 2024.
  8. Shandilaya, S. and Roshankhah, S. (2024) ”Hydraulic, Chemical, And Mechanical Response of Rocks in Offshore CO2 Storage Systems.” The Offshore Technology Conference, Houston, TX, May 6-9, 2024.
  9. Mohammadi, K., Hallal., M., Roshankhah, S., and Cox. B. (2024) “One- and Two-Dimensional Ground Response Analyses: What They Do/Don’t Tell about the Site.” The 8th International Conference on Earthquake Geotechnical Engineering, May 7-10, Osaka, Japan.
  10. Roshankhah, S. and Mohammadi, K. (2023) ”Pre-Failure to Post-Failure behavioral spectrum of jointed rock slopes.” Geocongress, Mar. 26-29,
    Los Angeles, CA, USA.
  11. Mohammadi, K., McCormack, K., Dvory, N., and Roshankhah, S. (2022) ”Seismic Behavior of Naturally Fractured Rocks involved in Deep Geo-energy
    Applications.” The 3rd International Conference on Coupled Processes in Fractured Geological Media, Nov. 14-16, Berkeley, CA, USA.
  12. Roshankhah, S. and McLennan, J. (2022) ”Hydraulic Fractures in Reservoirs Bounded by Layers of Other Rocks” The 56th US Rock
    Mechanics/Geomechanics Symposium, June 26-29, Santa Fe, NM, USA.
  13. Roshankhah, S. and Mohammadi, K. (2022) ”The whole behavioral spectrum of jointed rock slopes.” The GSA Penrose Conference: Progressive Rock
    Failure, June 20-24, Charlotte, NC, USA.
  14. Roshankhah, S., Teimouri, K., and Mohammadi, K. (2021) ”Thermo-Mechanical Response of Layered Rocks upon Single-Mode Microwave Treatment.” The ARMA/DGS/SEG 2nd International Geomechanics Symposium, Nov. 3-5, Virtual.
  15. Roshankhah, S., Mohammadi, K., and K-Nejad, A. (2020) ”Characteristics of Hydraulic Fractures in Terms of the Matrix Permeability and the Natural Fracture Density.” The 1st ARMA/DGS/SEG International Geomechanics Symposium, Nov. 3-5, Virtual.
  16. Roshankhah, S., K-Nejad, A., Mohammadi, K., and Teran, O. (2020) ”Behavior of Pre-fractured Rocks subjected to Hydraulic Fracturing with Respect to the Permeability of the Rock Matrix (Finite-Discrete Element Modeling).” The 2nd International Conference on Energy Geotechnics, April 10-13, 2022, La Jolla, CA.
  17. Temizel, C., Canbaz, C.H., Roshankhah, S., Palabiyik, Y., and Zheng, W. (2020) ”A Thorough Review and Latest Advances in Shale Oil Reservoirs:
    Seismic to Surveillance.” SPE Latin American and Caribbean Petroleum Engineering, Jul. 27-31, Virtual.
  18. Roshankhah, S. and Mohammadi, K. (2020) ”Fabric-dependent Hydro-Mechanical Behavior of Pre-fractured Rocks.” Geocongress, Feb. 25-28,
    Minneapolis, MN, USA.
  19. Roshankhah, S., Rubino, V., Marshall, J.P., Tengattini, A., Ando, E.C.G., Rosakis, A.J., Viggiani, G., and Andrade, J.E. (2019) ”Monitoring
    Laboratory Hydraulic Fractures in Pre-fractured Shale using High-resolution Optical and Neutron Imaging Techniques.” The 53rd US Rock Mechanics/Geomechanics Symposium, June 23-26, NYC, USA.
  20. Roshankhah, S., Mohammadi, K., Yu, W., and Miao, J. (2019) ”Relative Orientations Matter: Gas Shale Reservoir Behavior with Various
    Orientations of Wellbore-Bedding Planes-Principal Stresses.” The 53rd US Rock Mechanics/Geomechanics Symposium, June 23-26, NYC, USA.
  21. Roshankhah, S., Cruz, L.G., Shin, H., Lizcano, A., and Santamarina, J.C. (2018). ”The Hydro-Mechanical Response of Pre-Structured Reservoirs Subjected to Hydraulic Fracture.” The 1st International Conference on Energy Geotechnics, Sep. 25-28, Lausanne, Switzerland.

Submitted

  1. Shandilaya, S., Alaleeli, M., Kim, S.H., Mobasher, M., and Roshankhah, S. (2026) ”Experimental and Numerical Modeling of Interactions between Hydraulic and Natural Fractures,” Under review in the International Journal of Rock Mechanics and Mining Sciences.
  2. Alasadi, A. and Roshankhah, S. (2026) ”Experimental and Numerical Analyses of Particle Shape Effects on the Mechanical Behavior of Particulate Packs Under Different Loading Conditions,” Under review in the Journal of Granular Matter.

Journal and Conference Articles Under Preparation

  1. Shandilaya, S. and Roshankhah, S. (2026) ”Hydro-Mechanical Regimes Due to CO2 Injection into Sandstone Formations in Uinta Basin, Utah,” to be submitted to the International Journal of Rock Mechanics and Mining Sciences.
  2. Shandilaya, S., Kresse, O., and Roshankhah, S. (2026) ”Hydro-Mechanical Regimes Due to Water Injection into Naturally Fractured Granitic Rocks with Ultra-Low Permeability Matrix in Enhanced Geothermal Systems,” to be submitted to the Journal of Rock Mechanics and Rock Engineering.
  3. Alasadi, A., Potyondy, D., and Roshankhah, S. (2026) ”Experimental and Numerical Simulations of Particle Breakage Effects on the Mechanical and Hydraulic Properties of Proppant Packs,” to be submitted to the Journal of Geomechanics for Energy and the Environment.
  4. Mohammadi, K., Shandilaya, S., and Roshankhah, S. (2026) ”Fluid Injection-Induced Seismic Signatures of Naturally Fractured Rocks in Terms of Matrix Permeability and DFN Density,” to be submitted to the Journal of Geophysical Research, Solid Earth.
  5. Shandilaya, S., Nguyen, H., Li, W.F., and Roshankhah, S. (2026) ”Mechanisms of Fracture Curving in Statistically Homogeneous Media,” to be submitted to the Journal of Engineering Fracture Mechanics.
  6. Pan, J., Potyondy, D., Li, W., and Roshankhah, S. (2026) ”Creep, Pressure Solution, and Stress Corrosion in Proppant Packs and Fracture Surfaces: Experimental and DEM Modeling,” to be submitted to the Journal of Rock Mechanics and Geotechnical Engineering.
  7. Mohammadi, K., Fathi, A., and Roshankhah, S. (2026) ”Inversion of thermal conductivity in geomaterials: theory, computations, and validation,” to be submitted to the Journal of Computers and Geotechnics.
  8. Lopez, O.I., Alaleeli, M., Liu, L., Mobasher, M., Arson, C., McLennan, J., and Roshankhah, S. (2026) ”Mechanical Constraints on Hydraulic Fracture Patterns in Layered Formations: Theoretical, Experimental, and Numerical Studies,” to be submitted to the Journal of Rock Mechanics and Rock Engineering.
  9. Lopez, O.I., Xing, P., Mishra, B., McLennan, J., and Roshankhah, S. (2026) ”Geometric and Hydro-Mechanical Characteristics of DFN in Utah Forge Granite Samples,” to be submitted to the Journal of Rock Mechanics and Geotechnical Engineering.
  10. Shandilaya, S. and Roshankhah, S. (2026) ”Fracture Network Evolution in Intact and Naturally Fractured Granites: Effects of Natural Fracture Density and Bonding Strength on Coupled Hydromechanical Regimes,” to be submitted to the 51st Stanford Geothermal Workshop, Feb. 9-11, Palo Alto, CA.
  11. Alasadi, A., Potyondy, D., and Roshankhah, S. (2026) ”Experimental and Numerical Evaluation of Proppants’ Hydromechanical Behavior in EGS Environments: Influence of Particle Breakage,” to be submitted to the 51st Stanford Geothermal Workshop, Feb. 9-11, Palo Alto, CA.