Zobrazeno 1 - 10
of 1 283
pro vyhledávání: '"loading and unloading"'
Autor:
Minke Duan, Meijuan Lu, Ruiqi Ban, Ke Yang, Xin Lyu, Changbao Jiang, Xuelong Hu, Jinzhou Tang
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract To study the influence of cyclic disturbance stress on the mechanical behavior of coal during mining, a gas containing coal fluid-solid coupling servo seepage experimental system was used to conduct experimental research on the acoustic emis
Externí odkaz:
https://doaj.org/article/11dacabd7fb64a348026e50ad6d3f9f5
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Since accidents such as roof caving, rock fragmentation, and severe deformation are particularly likely to occur during roadway excavation in soft and thick coal seams, grasping the range and distribution of deformation and fracturing of sur
Externí odkaz:
https://doaj.org/article/a9dfa6e9c62548d49baf636677e9b933
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e04117- (2024)
In order to investigate the dynamic response of iron tailing sand based foam concrete as a roadbed filler, graded cyclic loading and unloading tests were carried out in this paper to examine its dynamic properties. The hysteresis curve, fatigue stren
Externí odkaz:
https://doaj.org/article/4c3b27fa8a2249f59f003429933894e8
Autor:
Qihang ZHANG, Xiangrui MENG, Guangming ZHAO, Wensong XU, Chongyan LIU, Zhixi LIU, Xukun WU, Minjie QI
Publikováno v:
Meitan xuebao, Vol 49, Iss S1, Pp 182-196 (2024)
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true tri
Externí odkaz:
https://doaj.org/article/1ac93a4a157748909c4974d89c35ba67
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 6, Pp 90-101 (2024)
In order to study the mechanical properties and strain field evolution of gas-bearing coal under cyclic loading, the mechanical properties of gas-bearing coal under cyclic loading and unloading conditions were tested with the Rock Mechanics Test (MTS
Externí odkaz:
https://doaj.org/article/ef4149b539db42c3b4e93081bc5f0f73
Publikováno v:
Archives of Civil Engineering, Vol vol. 70, Iss No 2, Pp 233-254 (2024)
Take the metamorphic sandstone as the reference object, by making rock like samples with fractures, the conventional triaxial loading and unloading test and PFC numerical simulation of rock like sample with single fracture were conducted, and the eff
Externí odkaz:
https://doaj.org/article/502da1d6d13f44dea376fe269017a548
Publikováno v:
Meitan xuebao, Vol 49, Iss 5, Pp 2283-2297 (2024)
In order to study the effect of basic roof period pressure on the dynamic characteristics of impact pillar, one-dimensional dynamic and static combined loading SHPB experimental device is used to carry out dynamic impact experiment on the impact sand
Externí odkaz:
https://doaj.org/article/2512f3856a0a4f6c9715fa7d47424bfe
Publikováno v:
Meikuang Anquan, Vol 55, Iss 5, Pp 170-179 (2024)
Exploring the energy evolution of fractured sandstone under true triaxial cyclic loading is helpful to clarify the law of rock damage and failure. The evolution characteristics of total absorbed energy, elastic energy, dissipated energy and plastic d
Externí odkaz:
https://doaj.org/article/c63b8a65fadf4af3898e523a033a394b
Publikováno v:
Shuiwen dizhi gongcheng dizhi, Vol 51, Iss 3, Pp 80-89 (2024)
During the excavation process of deep rock masses, the surrounding rock stress field forms alternating zones of stress increase (loading zones) and stress decrease (unloading zones) near the excavation surface, which can easily trigger instability an
Externí odkaz:
https://doaj.org/article/02771ba1d04045bfb88ce854593a55dd
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-12 (2024)
Abstract This study investigates the stability of an artificial dam used in an underground reservoir in a coal mine under periodic weighting imposed by overlying rock strata. For this purpose, cyclic loading and unloading tests with different stress
Externí odkaz:
https://doaj.org/article/7780a545d89047b58755e41e586b521a