Results 11 to 20 of about 1,567 (145)

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

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   +2 more sources

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

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   +2 more sources

Modified Nishihara Rheological Model considering the Effect of Thermal-Mechanical Coupling and Its Experimental Verification [PDF]

open access: yesAdvances in Materials Science and Engineering, 2018
The effect of temperature and pressure, which play important roles in the mechanical properties of rocks during deep energy exploitation, has not been sufficiently studied in the previous rock creep models. In order to investigate thermal effect in creep
Xingang Wang   +4 more
doaj   +2 more sources

Research on Creep Model of Roadway Surrounding Rock Based on Variable Creep Parameters [PDF]

open access: yesMeikuang Anquan, 2020
In order to study the creep behavior of surrounding rock of Huaying Coal Mine in Sichuan under different confining pressure characteristics, the triaxial creep test of sandstone was carried out by TAW-2000 test system.
LIU Changming, ZHANG Hong
doaj   +2 more sources

Creep Properties of Mudstone Interlayer in Bedded Salt Rock Energy Storage Based on Multistage Creep Test: A Case Study of Huai’an Salt Mine, Jiangsu Province [PDF]

open access: yesGeofluids, 2022
Salt rock is internationally recognized as an excellent medium for energy storage. However, most of the domestic salt mines are lacustrine laminated formations with mudstone interlayers, which have different creep characteristics to pure salt rocks ...
Jie Chen   +6 more
doaj   +2 more sources

Nonlinear Creep Behavior and Viscoelastic-Plastic Constitutive Model of Rock-Concrete Composite Mass [PDF]

open access: yesAdvances in Civil Engineering, 2020
The joint force deformation of rock-concrete composite structures is different from that of simple rock specimens or concrete specimens, such as the tunnel surrounding rock-lining concrete, dam foundations, and concrete.
Yang Liu   +4 more
doaj   +2 more sources

Creep constitutive model of logarithmic fractal structure derivative of deep hard brittle rock [PDF]

open access: yes工程科学与技术
ObjectiveIn the field of geotechnical engineering, it has always been a key issue to deeply explore the deformation law of surrounding rock under long-term load and accurately reveal its creep deformation mechanism.MethodsIn order to achieve this goal ...
LIU Yipin   +5 more
doaj   +2 more sources

Improved Nishihara model considering accelerated creep cells. [PDF]

open access: yes, 2023
Improved Nishihara model considering accelerated creep cells.
Jiangbo Guo (825963)   +3 more
core   +1 more source

Deformation Prediction of Tunnel-Surrounding Rock Considering the Time Effect of the Viscosity Coefficient: A Case of an NATM-Excavated Tunnel

open access: yesFrontiers in Earth Science, 2022
Considering engineering problems such as complicated stress and the difficulty in controlling large deformation while a tunnel passes through a soft rock stratum, a theoretical prediction model of convergence deformation of tunnel-surrounding rock is ...
Da Hu   +5 more
doaj   +1 more source

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