Best Student Award in IGS2024 (Kuala Lumpur, Malaysia) for oral presentation on heterogenous stress conditions on rock discontinuities in laboratory shear tests
Published:
Certificate
Awarding
Presenting
Shupeng won Best Student Award for the oral presentation entitled New insights into stress conditions on rock discontinuities in laboratory shear tests in the 2024 International Geomechanics Conference held on 18 – 20 November in Kuala Lumpur, Malaysia.
Reported by PolyU CEE: CEE PhD Student Received “Best Student Award” at the 2024 International Geomechanics Conference
Mentioned by China Society for Rock Mechanics & Engineering: 学会联合主办2024年度国际地质力学大会在马来西亚吉隆坡成功召开
Abstract
Rock discontinuities (e.g., joints, fractures, faults, and bedding planes) dominate the mechanical and hydraulic behavior of rock masses in a wide range of applications, from natural earthquakes to engineering projects including slopes, underground excavations, hydraulic fracturing, wastewater storage, etc. Numerous laboratory shear tests have been conducted on rock discontinuities using various experimental setups. These include direct shear (DS) tests, true triaxial direct shear (TTDS) tests, single direct shear (SDS) tests, double direct shear (DDS) tests, triaxial direct shear (TDS) tests, triaxial shear (TS) tests, biaxial shear (BS) tests, axial shear (AS) tests, oblique shear (OS) tests, and rotary shear (RS) tests. Stress heterogeneity on rock discontinuities is critical in shear friction evolution and earthquake nucleation, whereas the local stress distribution has seldom been applied for shear analyses in laboratory shear tests. Instead, the average stress on rock joints was usually taken as an indicator. Thus, in this study, stress conditions on rock discontinuities in various laboratory shear tests are investigated numerically to account for the influence of stress heterogeneity on shear behaviors.
