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Mechanical Properties and Energy Dissipation of Sandstone under Cyclic Loading-Unloading [PDF]

Shock and Vibration, 2021
For the bearing rock in geotechnical engineering, it is frequently affected by external loads. This paper adopted different upper limits of stress to carry out cyclic loading-unloading on the sandstone specimens to make them in different damage degrees ...
Shoudong Xie, Chang Su, Ying Xu, Qianqian Wang, Jian Wang, Zixiang Xia   +5 more
doaj   +2 more sources

Permeability of the Hydrated Shale under Cyclic Loading and Unloading Conditions [PDF]

Geofluids, 2020
The hydrated shales under cyclic loading and unloading conditions are common for the shale reservoir development; corresponding mechanical properties and permeability evolution are very significant and should be deeply researched.
Liu Xianshan, Li Man, Xu Ming, Kang Zhiyong   +3 more
doaj   +2 more sources

Energy Action Mechanism of Reinforced Sandstone under Triaxial Cyclic Loading and Unloading. [PDF]

Materials (Basel), 2022
In underground engineering, reinforcement is a necessary means to ensure the stability of surrounding rock. Due to the stress redistribution caused by excavation disturbances, the reinforced rock mass is frequently subjected to loading and unloading, and its mechanical properties change accordingly. Based on the above engineering practice, using pasted
Zhang S, Li Y, Yang J, Song Y, Yang L, Guo J.   +5 more
europepmc   +3 more sources

Study of Mechanical Property of Rock under Uniaxial Cyclic Loading and Unloading [PDF]

Advances in Civil Engineering, 2018
Through studying the mechanics, energy, and deformation features of rock under uniaxial cyclic loading and unloading, the findings are as follows: (1) under cyclic loading and unloading, the curve of stress and strain for loading and unloading in every ...
Hongjun Guo, Ming Ji, Yidong Zhang, Meng Zhang   +3 more
doaj   +2 more sources

Study on the energy characteristics of rocks under cyclic loading and unloading. [PDF]

Sci Rep
Abstract The deep-buried rock masses influenced by prolonged geological processes have accumulated vast amounts of energy. This stored energy is released due to disturbances in the external environment, a series of geological disasters is triggered.
Niu S, Wu J, Zhao J.
europepmc   +4 more sources

Energy dissipation and dilation processes of rock mass under incremental cyclic loading and unloading. [PDF]

Sci Rep
Abstract The deterioration of the mechanical properties of rock mass in underground engineering due to energy dissipation and microfracture accumulation under cyclic loading and unloading (CLU) has become a hot research topic in recent years.
Wang B, Zhu J, Jin Z, Xu D, Zhu Y, Guo Z.   +5 more
europepmc   +4 more sources

Precursors of Cyclic Loading and Unloading Sandstone Failure Based on “Acoustic-Thermal” Loading–Unloading Response Ratio

Sustainability, 2023
Coal mining often causes periodic disruption in the rock mass around the stope. The study of the deformation and failure characteristics of cyclic loading and unloading sandstone is very critical for gaining a thorough understanding of the mechanisms of rock damage, degradation, and failure. This kind of investigation is very helpful in determining the
Hao Xu, Liqiang Ma, Kewang Cao, Naseer Muhammad Khan, Sajjad Hussain, Dongdong Niu, Saad S. Alarifi, Sher Bacha   +7 more
openaire   +1 more source

Variation law of coal permeability under cyclic loading and unloading [PDF]

Thermal Science, 2019
In the excavation process, the coal pillar will undergo shear failure due to repeated loading and unloading from mining stress. Meanwhile, plastic flow will occur after shear failure. The permeability change of the coal pillar under plastic flow is closely related to the loading path.
Jingna Guo, Jiangfeng Liu, Qiang Li, Chen Xu, Zhanqing Chen, Bingxiang Huang, Shuliang Chen   +6 more
openaire   +1 more source

Mechanical and hydraulic properties of fault rocks under multi-stage cyclic loading and unloading

International Journal of Coal Science & Technology, 2023
The rock mass in fault zones is frequently subjected to cyclic loading and unloading during deep resource exploitation and tunnel excavation. Research on the mechanical and hydraulic characteristics of fault rock during the cyclic loading and unloading ...
Wentao Hou, Dan Ma, Qiang Li, Jixiong Zhang, Yong Liu, Chenyao Zhou   +5 more
doaj   +1 more source

Analysis of Energy Evolution and Acoustic Emission Characteristics of Rocks under Cyclic Loading and Unloading

Applied Sciences, 2023
This paper presents two experimental schemes, graded cyclic loading and unloading, and variable lower limit cyclic loading and unloading, to investigate the energy evolution and acoustic emission characteristics of rocks under different cyclic loading ...
Zhushuai Wang, Yu Yang, Yu Xu, Changhao Xin, Pengfei Liang, Ning Guo   +5 more
doaj   +1 more source