Results 21 to 30 of about 3,685 (135)

Creep behaviour and constitutive model of coal filled with gas

open access: yesInternational Journal of Mining Science and Technology, 2017
Coal exhibits different creep behaviours when filled with different amounts of gas. Creep tests of coal filled with 0 and 0.5 MPa gas were performed, and strain under different axial stress was compared.
Xiangchun Li   +6 more
doaj   +1 more source

Improved Nishihara model considering the effect of moisture content on the whole shear creep process of shale

open access: yes, 2022
Abstract The moisture content is closely related to the shear creep deformation behavior of soft rock, and the linear creep deformation behavior of soft rock can be described by the classical Nishihara model. However, the classical Nishihara model cannot describe the deformation characteristics of the whole process of shear creep including ...
Bin Hu   +5 more
openaire   +1 more source

Nonlinear Viscoelastic–Plastic Creep Model Based on Coal Multistage Creep Tests and Experimental Validation

open access: yesEnergies, 2019
The development of fractures, which determine the complexity of coal creep characteristics, is the main physical property of coal relative to other rocks.
Junxiang Zhang   +3 more
doaj   +1 more source

Unloading Rheological Test and Model Research of Hard Rock under Complex Conditions

open access: yesAdvances in Materials Science and Engineering, 2020
In order to study the unloading rheological properties of hard rock under complicated conditions, the proposed Mengdigou hydropower station with a granite dam foundation was taken as the research object.
Longyun Zhang, Shangyang Yang
doaj   +1 more source

Shear Creep Properties and Creep Model of Gravel Sliding Zone: A Case Study of the Zhoujia Landslide in China

open access: yesFrontiers in Earth Science, 2022
Creep behavior of landslide sliding zones is closely related to the long-term stability and safety of landslides. In this paper, shear creep tests are carried out on undisturbed samples of the gravel sliding zone in the Zhoujia landslide.
Shizhuang Chen   +10 more
doaj   +1 more source

The Research on the Effect of Humidity on the Rheological Model of Swelling Rock

open access: yesAdvances in Civil Engineering, 2020
The research on the rheological mechanical behaviour of swelling rock in the condition of humidity field has a significant meaning for large rock engineering, such as deep coal mining, tunnelling, and slope engineering.
Ming Ji, Yi-Dong Zhang
doaj   +1 more source

Shear creep mechanical properties and damage model of mudstone in open-pit coal mine

open access: yesScientific Reports, 2022
Clarifying the shear creep characteristics of rock and scientifically analyzing its creep deformation law is the key to solving the problem of safe construction and long-term stability analysis of the open-pit coal slope rock mass. Shear creep tests were
Guanghe Li   +7 more
doaj   +1 more source

Research on creep damage model of coal and rock mass around hole with different moisture contents

open access: yesMeikuang Anquan, 2022
In order to explore the influence of water on the creep characteristics of coal and rock mass around the holes, the square samples with holes and different moisture contents were prepared, and the staged loading creep failure test was carried out to ...
ZHAO Jianhui, XU Hongyi
doaj   +1 more source

A nonlinear fractional-order damage model of stress relaxation of net-like red soil

open access: yesScientific Reports, 2021
It is essential to precisely describe the nonlinear characteristics of the stress relaxation behavior to ensure the long-term stability of geotechnical structures in the net-like red soil.
Mingwu Wang   +4 more
doaj   +1 more source

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