Results 11 to 20 of about 27,123 (217)

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

Failure properties of rocks in true triaxial unloading compressive test

Transactions of Nonferrous Metals Society of China, 2015
Slabbing failure often occurs in the surround rock near a deep underground excavation. The mechanism of slabbing failure is still unclear. In order to reveal the influence of the intermediate principal stress (σ2) on slabbing failure, true triaxial unloading compressive test was carried out based on the stress path of the underground engineering ...
Kun DU, Xi-bing LI, Di-yuan LI, Lei WENG
openaire   +3 more sources

Temperature effect of rockburst in granite caverns: insights from reduced-scale model true-triaxial test

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
To investigate the influence of thermal treatment on the rockburst in granite caverns, true-triaxial compression tests were conducted on pre-heated granite cubic samples containing a circular through-hole using a true-triaxial test system, and the micro ...
Xuefeng Si, Yong Luo, Fengqiang Gong, Jiancheng Huang, Kaifeng Han   +4 more
doaj   +2 more sources

Study on Failure Difference of Hard Rock Based on a Comparison Between the Conventional Triaxial Test and True Triaxial Test

Frontiers in Earth Science, 2022
The study on the failure difference of deep hard rock based on the comparison between conventional and true triaxial tests can help us better understand the fracture processes and failure characteristics of the deep rock mass.
Guoqiang Zheng, Yonghui Tang, Yan Zhang, Yaohui Gao, Guoqiang Zhu, Meiben Gao, Meiben Gao, Junqian Ren, Kezhu Chen, Jicheng Sun   +9 more
doaj   +1 more source

New method for true-triaxial rock testing [PDF]

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1997
Two new and related true-triaxial apparatus are described that make use of conventional triaxial pressure vessels in combination with specially configured, high-pressure hydraulic jacks inside these vessels. The development combines advantages not found in existing facilities, including a compact design, pore-pressure and flow-through capabilities, the
Wawersik, W. R., Carlson, L. W., Holcomb, D. J., Williams, R. J.   +3 more
openaire   +1 more source

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

Experimental Study on the Strength and Deformation Characteristics of Concrete under True Triaxial Compression after Sulfate Attack

Advances in Civil Engineering, 2021
To explore the mechanical properties of concrete under true triaxial static compressive load after sulfate attack, uniaxial static compression test and true triaxial static compression test at four stress ratios were carried out on concrete specimens ...
Wei Xia, Erlei Bai, Jinyu Xu, Gaojie Liu
doaj   +1 more source

A study on the influences of a hygrothermal environment on the compressive strength and failure criteria of asphalt mixtures based on true triaxial tests

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, Mohamed Elchalakani, Yiming Zhou, Shi-tao Yan, Shuang-bei Li   +4 more
doaj   +1 more source

Determination method of rock characteristic stresses based on the energy growth rate

Frontiers in Earth Science, 2023
Introduction: Precisely determining the characteristic stress value of a rock progressive failure process has important theoretical and practical significance for reasonably defining the rock deformation and failure stage, mechanical mechanism, and ...
Xiaohui Liu, Xiaohui Liu, Xin Gui, Xue Qiu, You Wang, Yang Xue, Yu Zheng   +6 more
doaj   +1 more source

Aeolian Sand Test with True Triaxial Stress Path Achieved by Pseudo-Triaxial Apparatus

Sustainability, 2023
Aeolian sand is a special roadbed filler, but its three-dimensional mechanical properties are rarely studied. To obtain the characteristic of its deformation, strength on the deviatoric plane, and failure in three dimensions, a series of triaxial drained tests on aeolian sand in the Tengger Desert, under the condition of the constant average principal ...
Zhigang Ma, Xuefeng Li
openaire   +1 more source