Results 11 to 20 of about 2,122 (176)

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
doaj   +3 more sources

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

Sand production simulation under true-triaxial stress conditions [PDF]

International Journal of Rock Mechanics and Mining Sciences, 2013
Abstract Laboratory sanding experiments were carried out under true-triaxial stress conditions. The objective was to investigate the effect of state of stresses and fluid flow on the mechanism of sanding, and the development of the failure zone around the borehole.
Younessi, Ahmadreza, Rasouli, Vamegh, Wu, Bailin   +2 more
openaire   +4 more sources

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
doaj   +3 more sources

Microdynamic mechanical properties and fracture evolution mechanism of monzogabbro with a true triaxial multilevel disturbance method

International Journal of Mining Science and Technology
The far-field microdynamic disturbance caused by the excavation of deep mineral resources and underground engineering can induce surrounding rock damage in high-stress conditions and even lead to disasters.
Zhi Zheng, Bin Deng, Hong Liu, Wei Wang, Shuling Huang, Shaojun Li   +5 more
doaj   +3 more sources

Experimental study on impact dynamics and failure characteristics of coal specimen under true triaxial conditions

Meitan xuebao, 2023
Deep coal is mostly in a three-dimensional unequal stress state. In order to study the dynamic characteristics of coal under impact load, the dynamic failure mechanics experiment of coal was carried out by true triaxial Hopkinson experimental system ...
Rongxi SHEN, Zhoujie GU, Enyuan WANG, Zhentang LIU, Wei LIU, Xi WANG   +5 more
doaj   +1 more source

Acoustic Emission b Value Characteristics of Granite under True Triaxial Stress [PDF]

Mathematics, 2022
The acoustic emission b value is an important and widely used parameter for the early prediction of rock fractures. In this study, five groups of true triaxial compression tests were conducted on granite specimens to analyze changes in b value during the process of rock failure, and to investigate the b value characteristics of acoustic emission events.
Longjun Dong, Lingyun Zhang, Huini Liu, Kun Du, Xiling Liu   +4 more
openaire   +2 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
doaj   +1 more source

True triaxial tests on transversely isotropic unsaturated loess

Yantu gongcheng xuebao, 2022
In order to study the mechanical properties of transversely isotropic unsaturated remolded loess under complex stress paths, two groups of 15 tests are carried out using the true triaxial apparatus.
GUO Nan 1, CHEN Zheng-han 1, 2, YANG Xiao-hui 1, GAO Deng-hui 3
doaj   +1 more source

The Strength Criterion for Rocks Under True Triaxial Stress

Procedia Structural Integrity, 2021
Abstract A new criterion has been developed for the strength of rocks in the condition of true triaxial stress. The criterion parameters are calculated based on the results of a complex determination of the ultimate strength, which includes uniaxial tensile, uniaxial compression and biaxial compression.
openaire   +1 more source