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A novel method for imitating true-triaxial stress path with conventional triaxial apparatus

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The stress paths of the cylindrical specimen in the p–q stress space by controlling the ratio of the axial and the radial loading is guaranteed to be consistent with the cuboid specimen, a novel method for imitating true-triaxial stress path by ...
Xuefeng Li, Zhigang Ma
doaj   +3 more sources

Effect of true triaxial principal stress unloading rate on strain energy density of sandstone

Scientific Reports
Deep 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, Guangming Zhao, Xiangrui Meng, Qingheng Gu   +3 more
doaj   +4 more sources

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, Chao Liu, Minghui Li, Zhenlong Song   +3 more
doaj   +2 more sources

Investigation of the influence of intermediate principal stress on the dynamic responses of rocks subjected to true triaxial stress state

International Journal of Mining Science and Technology, 2021
Precisely understanding the dynamic mechanical properties and failure modes of rocks subjected to true triaxial stress state (σ1 > σ2 > σ3, where σ1, σ2, and σ3 are the major principal stress, intermediate principal stress, and minor principal stress ...
Wei You, Feng Dai, Yi Liu, Hongbo Du, Ruochen Jiang   +4 more
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Experimental study on the mechanical and failure behaviors of deep rock subjected to true triaxial stress: A review

International Journal of Mining Science and Technology, 2022
It has become an inevitable trend of human development to seek resources from the deep underground. However, rock encountered in deep underground engineering is usually in an anisotropic stress state (σ1>σ>σ3) due to the influences of geological ...
Heping Xie, Jun Lu, Cunbao Li, Minghui Li, Mingzhong Gao   +4 more
doaj   +3 more sources

Strength and deformation properties of frozen sand under a true triaxial stress condition

Soils and Foundations, 2022
In recent years, the mechanical properties of frozen soils under complex stress states have attracted significant attention; however, limited by the test apparatus, true triaxial tests on frozen soils have rarely been conducted. To study the strength and
Kun Huang, Qinyong Ma, Dongdong Ma, Zhaoming Yao   +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 Reports
Shear 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, Zengchao Feng, Bichuan Zhang, Xuecheng Li, Yongxing Shen, Jiaqi Liu, Zhuochao Yan, Haosen Wang   +7 more
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Experimental study on failure evolution mechanism of clastic rock considering cementation and intermediate principal stress

Journal of Rock Mechanics and Geotechnical Engineering, 2023
The study of clastic rock failure evolution under true triaxial stress is an important research topic; however, it is rarely studied systematically due to the limitation of monitoring technology.
Feiyan Wang, Xia-Ting Feng, Yangyi Zhou, Xiaojun Yu   +3 more
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A novel true triaxial test system for microwave-induced fracturing of hard rocks

Journal of Rock Mechanics and Geotechnical Engineering, 2021
This study introduces a test system for microwave-induced fracturing of hard rocks under true triaxial stress. The test system comprises a true triaxial stress loading system, an open-ended microwave-induced fracturing system, a data acquisition system ...
Xia-Ting Feng, Jiuyu Zhang, Chengxiang Yang, Jun Tian, Feng Lin, Shiping Li, Xiangxin Su   +6 more
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Dynamic mechanical properties and failure criteria of concrete under true triaxial stress

Shuili Shuiyun Gongcheng Xuebao, 2021
The true triaxial compression tests under different stress ratios and different loading rates are conducted to study the static and dynamic mechanical properties of concrete structures under complex stress conditions.
XU Yuanyuan, PENG Gang, WANG Qianfeng, XIAO Shuluan, LI Wei, PENG Zhujun   +5 more
doaj   +1 more source