Research Statement

Research Keywords

• HPHT Rock Behavior, Time Dependent Rock Behavior, Rock burst, Coal Mine Ground Control

Research Groups

• Changdi Hi, Graduate Student. Mining Engineering. 01/07/2022 - present.
• Jose Zela Concha, Graduate Student. Mining Engineering@WVU. 01/01/2021 - 12/31/2022.
• Yun Zhao(@WVU), Graduate Student. Mining Engineering@WVU. 01/01/2019 - 08/31/2022. Awards/Scholarships/Stipends: Syd and Felia Peng Ground Control Scholarship.
• Qingwen Shi (@WVU), Graduate Student. Mining Engineering. 02/01/2018 - 08/31/2022. Awards/Scholarships/Stipends: Syd and Felicia Peng Ground control scholarship.

Presentations

• Bedding plane properties influence the failure behavior of laminated rocks such as slate and shale. For safe and stable underground coal mine design it is imperative to understand the relationship between the bedding plane strength and the failure of laminated rock. However, it is difficult to obtain in situ laminated rocks with various bedding plane properties while keeping other properties constant. In the present research, we experimentally investigated various approaches to vary the weak plane cohesive strength (Cp). Concrete block incorporating a weak plane was casted and the Cp of the weak plane was varied experimentally using two methods. Direct shear tests along the planes validated that applying normal stress on the concrete block successfully varied the Cp. The verified method was then used to cast synthetic laminated rock (SLR) with various Cp. We then conducted Brazilian splitting tests on SLR with different orientations of bedding planes and compared the failure strength and failure modes with that of shale specimen. The results validated the second method as both failure strength and failure modes of SLR specimens matched the behavior of shale specimens. This research provided a validated method to fabricate SLR with different Cp in the laboratory. Conference Paper, Refereed, Presented, 06/27/2022.
  https://onepetro.org/ARMAUSRMS/proceedings/ARMA22/...
• Investigation of Laminated Roof Failure Coupling DEM and FDM - Laminated roof failure accounts for most of roof falls in the US. A novel numerical method combining advantages of both discrete element method (DEM) and finite-difference method (FDM) was proposed. The laminated roof of the entry was represented by an assembly of bonded particles using PFC3D. The rest of the surrounding rock was represented by continuum zones using FLAC3D. After verifying the coupled model with field measurement results, parametric study of bedding plane strength was conducted. The strength of the bedding planes was varied to observe their effect on laminated roof response when subjected to panel extraction-induced loadings. This research proposed a novel numerical tool for mining engineers and designers when dealing with underground entries with laminated roof. Poster, Presented, 02/28/2022.

Languages

• Hindi, fluent.

Geographical Regions of Interest

• United States of America

Research Equipment and Testing Expertise

• 25" Diameter Split Hokinson Bar for testing rocks at high strain rate. Additional Capability of confining pressure and temperature . Contact: Brijes Mishra , 801-581-5699 .

Publications

• Changdi He, Brijes Mishra, Wei Yuan, Xiao Wang & Qingwen Shi (2023). Investigation of the dynamic behavior and fracturing mechanism of granite. Fuel. Vol. Volume 360. Published, 12/13/2023.
  https://doi.org/10.1016/j.fuel.2023.130579
• Qingwen Shi, Zhenhua Ouyang, Brijes Mishra & Yun Zhao (2023). A self-confined compression model of point load test and corresponding numerical and experimental validation. Computers and Concrete. Vol. 32, 465-474. Published, 10/27/2023.
  https://www.techno-press.org/content/?page=article...
• Changdi He, Brijes Mishra, Qingwen Shi, Yun Zhao, Dajun Lin & Xiao Wang (2023). Correlations between mineral composition and mechanical properties of granite using digital image processing and discrete element method. International Journal of Mining Science and Technlogy. 14. Published, 07/20/2023.
  https://www.sciencedirect.com/science/article/pii/...
• Changdi He & Brijes Mishra (2023). Characterization of Fracture Propagation in Granite under Uniaxial Compression Test through Digital Image Processing and Discrete Element Method. American Rock Mechanics Association. 8. Published, 06/28/2023.
• Yun Zhao, Brijes Mishra, Qingwen Shi & Gaobo Zhao (2023). Size-dependent Mohr–Coulomb failure criterion. Bulletin of Engineering Geology and the Environment. Vol. 82. Published, 05/22/2023.
  https://doi.org/10.1007/s10064-023-03243-y
• Yun Zhao, Brijes Mishra, Qingwen Shi & Gaobo Zhao (2022). A Size-Dependent Bonded-Particle Model for Transversely Isotropic Rock and its Application in Studying the Size Effect of Shale. Geotechnical and Geological Engineering. Vol. 40, 5437–5453. Published, 11/01/2022.
  https://doi.org/10.1007/s10706-022-02224-4
• Neel Gupta, Brijes Mishra & Dustin Crandall (2022). A New Workflow of X-ray CT Image Processing and Data Analysis of Structural Features in Rock Using Open-Source Software. Mining, Metallurgy & Exploration volume. Vol. 39, 2011–2024. Published, 09/08/2022.
  https://doi.org/10.1007/s42461-022-00662-5
• Qingwen Shi & Brijes Mishra (2022). Numerical Analysis of the Effect of Bedding Plane Strength on Laminated Roof Failure in Underground Entries Using Coupled FDM-DEM. Mining, Metallurgy & Exploration. 11. Published, 03/17/2022.
  https://doi.org/10.1007/s42461-022-00583-3
• Qingwen Shi, Brijes Mishra & Yun Zhao (2022). DEM Analysis of the Effect of Lamination Properties on the Stability of an Underground Coal Mine Entry with Laminated Shale Roof. Mining Metallurgy and Exploration. Published, 01/11/2022.
  https://doi.org/10.1007/s42461-022-00541-z
• Parsoon Garg, Bharadwaj Pandit, Brijes Mishra & G.L Sivakumar Babu (2021). Development of a polyaxial platen for testing true triaxial behavior of rocks. Canadian Geotechnical Journal. Vol. 58, 1839 - 1854. Published, 12/31/2021.
  https://doi.org/10.1139/cgj-2020-0247
• Qingwen Shi, Brijes Mishra, Shuwen Wang & Gang Xu (2021). In Situ Assessment of the Effectiveness of an Undisturbed Single Driving Entry’s Relief Borehole in Coal Burst-prone Seam. Mining, Metallurgy & Exploration. Vol. 38, 2443–2452. Published, 10/19/2021.
  https://doi.org/10.1007/s42461-021-00511-x
• Qingwen Shi, Jungfen Pan, Shuwen Wang, Shaohong Liu, Brijes Mishra & Shannon Seitz (2021). Field Monitoring of Delayed Coal Burst in an Advancing Entry of a Deep Coal Mine. Mining, Metallurgy & Exploration. Vol. 38, 2417–2431. Published, 10/19/2021.
  https://doi.org/10.1007/s42461-021-00508-6
• Debashis Das, Brijes Mishra & Neel Gupta (2021). Understanding the influence of petrographic parameters on strength of differently sized shalespecimens using XRD and SEM. International Journal of Mining Science and Technology. Vol. 31, 953-961. Published, 07/28/2021.
  https://doi.org/10.1016/j.ijmst.2021.07.004
• Neel Gupta & Brijes Mishra (2021). Experimental Investigation of Time‑Dependent Deformation in Brittle Marcellus Shale. Mining, Metallurgy and Exploration,. Vol. 38, 1943–1953. Published, 07/27/2021.
  https://doi.org/10.1007/s42461-021-00462-3
• Neel Gupta & Brijes Mishra (2020). Influence of stress-induced microcracks on viscoplastic creep deformation in Marcellus shale. Acta Geotechnica. Vol. 16, 1575–1595. Published, 11/19/2020.
  https://doi.org/10.1007/s11440-020-01108-2
• Qingwen Shi & Brijes Mishra (2020). Discrete element modelling of delamination in laboratory scale laminated rock. Mining, Metallurgy & Exploration. Vol. 38, 433–446. Published, 09/14/2020.
  https://doi.org/10.1007/s42461-020-00302-w
• Qingwen Shi & Brijes Mishra (2020). Discrete element modelling of delamination in laboratory scale laminated rock. Mining, Metallurgy & Exploration. Vol. 38, 433–446. Published, 09/14/2020.
  https://doi.org/10.1007/s42461-020-00302-w
• Bali B.V & Brijes Mishra (2020). Determination of Suitable Pillar Size for Protecting Gas Well Drilled Through a Longwall Mining Abutment Pillar Using Numerical Modelling Approach – A Case Study. Geotechnical and Geological Engineering. Vol. 39, 1329–1347. Published, 09/14/2020.
  https://doi.org/10.1007/s10706-020-01561-6
• Neel Gupta & Brijes Mishra (2020). Experimental Investigation of the Influence of Bedding Planes and Differential Stress on Microcrack Propagation in Shale Using X-Ray CT Scan. Geotechnical and Geological Engineering. Vol. 39, 213–236. Published, 07/27/2020.
  https://doi.org/10.1007/s10706-020-01487-z
• Danqing Gao & Brijes Mishra (2020). Modeling Spatial Variance and Investigating the Effects of Variability on Intact Rock Strength and Stability of Entries in a Longwall Mine. Mining, Metallurgy & Exploration. Vol. 37, 1557–1570. Published, 07/20/2020.
  http://dx.doi.org/10.1007/s42461-020-00258-x
• Yuting Xue & Brijes Mishra (2020). Numerical Simulation of the Relaxation Behavior of Failed Sandstone Specimens. Mining, Metallurgy & Exploration. Vol. 37, 1411-1422. Published, 06/25/2020.
  https://doi.org/10.1007/s42461-020-00250-5
• Wang J, Weijie W, Jinxing Zhang, Brijes Mishra & Ang Li (2020). Numerical investigation on the caving mechanism with different standard deviations of top coal block size in LTCC. International Journal of Mining Science and Technology. Vol. 30, 583-591. Published, 06/10/2020.
  https://doi.org/10.1016/j.ijmst.2020.06.001
• A.Y. Gunes, Neel Gupta, Edward Sabolsky & Brijes Mishra (2020). Mineralogical characterization and strain analysis of the Marcellus shales. International Journal of Rock Mechanics and Mining Sciences. Vol. 130, 104442. Published, 04/16/2020.
  https://doi.org/10.1016/j.ijrmms.2020.104442
• Danqing Gao, Brijes Mishra & Yuting Sue (2020). Numerical Simulation of Laboratory Strength Tests Using a Stochastic Approach. Mining, Metallurgy & Exploration. Vol. 37, 709-716. Published, 02/19/2020.
  https://doi.org/10.1007/s42461-020-00189-7
• Yuting Xue, Brijes Mishra & Danqing Gao (2018). Laboratory study on the time-dependent behavior of intact and failed sandstone specimens under an unconfined condition with the relaxation test. International Journal of Rock Mechanics and Mining Sciences. Vol. 110, 210-217. Published, 08/23/2018.
  https://doi.org/10.1016/j.ijrmms.2018.08.011
• Yuting Xue, Brijes Mishra & Danqing Gao (2017). Using the Relaxation Test to Study Variation in the Time-Dependent Property of Rock and the Consequent Effect on Time-Dependent Roof Failure. Rock Mechanics and Rock Engineering. Vol. 50, 2521-2533. Published, 05/02/2017.
• Yuting Xue, Brijes Mishra & Danqing Gao (2016). Numerical and Laboratory Analysis of Relaxation Tests for Determining Time-Dependent Properties of Rock. Geotechnical and Geological Engineering. Vol. 35, 615-629. Published, 11/24/2016.
  https://doi.org/10.1007/s10706-016-0129-0
• Brijes Mishra & Xu Tang (2015). Stability analysis of bleeder pillars in longwall mines by displacement-discontinuity program. International Journal of Mining Science and Technology. Vol. 6, 933-941. Published, 11/03/2015.
  https://doi.org/10.1016/j.ijmst.2015.09.009
• S Arora & Brijes Mishra (2015). Investigation of the failure mode of shale rocks in biaxial and triaxial compression tests. International Journal of Rock Mechanics and Mining Sciences. Vol. 79, 109-123. Published, 08/21/2015.
  https://doi.org/10.1016/j.ijrmms.2015.08.014
• Peter Zhang, Brijes Mishra & Keith Heasley (2015). Experimental investigation on the influence of high pressure, high temperature on the mechanical properties of deep reservoir rocks. Rock Mechanics and Rock Engineering. Vol. 48, 2197–2211. Published, 02/13/2015.
  https://doi.org/10.1007/s00603-015-0718-x
• Priyesh Verma & Brijes Mishra (2014). An experimental investigation of the creep behavior of an underground coal mine roof with shale formation. International Journal of Coal Geology,. Vol. 137, 55-65. Published, 11/27/2014.
  https://doi.org/10.1016/j.coal.2014.11.005
• Brijes Mishra & Anil Ray (2014). Numerical Analysis of Time-Dependent Behavior of immediate roof with a hypothetical one-entry mine. Mining, Metallurgy, and Exploration. Vol. 66, 45-51. Published, 03/12/2014.
• Christopher J. Bise (2013). Modern American Coal Mining. (pp. 576). Society for Mining, Metallurgy and Exploration, Inc.. Published, 10/01/2013.
• Brijes Mishra & Dachao Nie (2013). Experimental investigation of the effect of change in the control modes on the post-failure behavior of coal and coal measures rock. nternational Journal of Rock Mechanics and Mining Sciences. Vol. 60, 363-369. Published, 01/15/2013.
  https://doi.org/10.1016/j.ijrmms.2013.01.016
• Brijes Mishra & Bongani Dlamini (2012). Investigation of swelling and elastic property changes resulting from CO2 injection into cuboid coal specimens. Energy and Fuels,. Vol. 6, 3951–3957. Published, 05/08/2012.
  https://doi.org/10.1021/ef300317k
• Brijes Mishra, Chandan Bhar & Phalguni Sen (2007). Development of a computer model for determination of cutoff grade in metaliferrous deposits. Journal of Mines Metals and Fuels. Vol. 54, 143-147. Published, 04/19/2007.
• Brijes Mishra, Chandan Bhar & Phalguni Sen (2004). Development of a model for determination of cutoff grade in metaliferrous deposits. Journal of Mines Metals and Fuels. Vol. 275, 130-135. Published, 10/13/2004.