Study of the mechanical characteristics of coal-serial sandstone after high temperature treatment under true triaxial loading [PDF]
Scientific Reports, 2023 In this study, a series of true triaxial loading tests were carried out on coal-measure sandstone after high temperature treatment by using a self-developed true triaxial test system combined with acoustic emission (AE) monitoring, and the mass loss ...
Shuai Wang +5 more
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True-Triaxial Drained Test of Tengger Desert Sand [PDF]
Advances in Civil Engineering, 2020 For the lack of accurate test results in design and maintenance of desert-crossing highways in the Tengger Desert of western China, the GDS true-triaxial system was used to conduct the drained test on dense sand.
Xuefeng Li +3 more
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Effect of true triaxial principal stress unloading rate on strain energy density of sandstone [PDF]
Scientific ReportsDeep rock are often in a true triaxial stress state. Studying the impacts of varying unloading speeds on their strain energy (SE) density is highly significant for predicting rock stability.
Zhixi Liu +3 more
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A study on the influences of a hygrothermal environment on the compressive strength and failure criteria of asphalt mixtures based on true triaxial tests [PDF]
Heliyon, 2022 Based on a high-pressure servo static and dynamic true triaxial test machine (tawz-500/300), uniaxial and true triaxial tests of AC-25C asphalt mixtures under different heat moisture coupling treatments were performed, and the triaxial compressive ...
Pan Wang +4 more
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Experimental study of true triaxial high pressure subcritical water impact fracturing. [PDF]
Sci Rep, 2023 AbstractA new fluid alternative to slick water for fracturing shale gas can reduce the waste of water resources and improve the extraction efficiency, enabling volumetric fracturing. For the new fracturing technique, the experiments of different release pressures under pre-injection and for pre-injection were conducted using a self-designed true ...
Hu S, Wang X, Wang E.
europepmc +4 more sources
Verification of a novel stress path method by true-triaxial test [PDF]
Scientific ReportsTo verify the novel method of achieving a true-triaxial stress path with the pseudo-triaxial apparatus, a series of drained and undrained tests were carried out for the identical scheme with pseudo-triaxial apparatus and true-triaxial apparatus ...
Zhigang Ma, Xuefeng Li, Longlong Lv
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Influence of principal stress effect on deformation and permeability of coal containing beddings under true triaxial stress conditions [PDF]
Royal Society Open Science, 2019 In situ stress is generally an anisotropic/true triaxial stress (σ1 > σ2 > σ3). Bedding weakens the continuity and integrity of coal. It is critical to understand the mechanical behaviour and gas migration of coal under true triaxial stress conditions ...
Jiahui Dai +3 more
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Evolution of mechanical properties and acoustic emission characteristics of granite with normal stress under true triaxial shear test [PDF]
Scientific ReportsShear failure is a typical failure mode of surrounding rock in underground excavations. The mechanical properties and damage evolution characteristics of rock under true triaxial shear conditions are essential for stability evaluation and monitoring ...
Jizhe Guo +7 more
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Calculation method and evolution rule of the strain energy density of sandstone under true triaxial compression [PDF]
Scientific ReportsDeep rock masses are typically in complex stress states, and research on the evolution of their strain energy density is of highly important for understanding their failure characteristics.
Liu Zhixi +3 more
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Deformation, fracture characteristics and damage constitutive model of soft coal under true triaxial complex stress paths. [PDF]
PLoS ONEUnderstanding the mechanical properties and damage deterioration mechanisms of soft coal under true triaxial complex stress paths is crucial for predicting and evaluating the stability of the roof during roadway excavation in thick soft coal seams.
Chongyang Jiang +3 more
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