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Full-Text Articles in Geotechnical Engineering
Mechanical Properties And Damage Constitutive Model Of Coal Under The Coupled Hydro-Mechanical Effect, Bo-Bo Li, Zhong-Hui Wang, Chong-Hong Ren, Yao Zhang, Jiang Xu, Jian-Hua Li
Mechanical Properties And Damage Constitutive Model Of Coal Under The Coupled Hydro-Mechanical Effect, Bo-Bo Li, Zhong-Hui Wang, Chong-Hong Ren, Yao Zhang, Jiang Xu, Jian-Hua Li
Rock and Soil Mechanics
In order to explore the impact of moisture on the mechanical properties of coal, the triaxial compression tests of raw coal with different moisture contents are carried out by using the triaxial servo-controlled seepage equipment for thermal-hydro- mechanical coupling in coal containing methane. Based on elastic damage mechanics, the damage variables of coal with different moisture contents are deduced, and the damage constitutive model of coal under hydro-mechanical coupling is established, the deformation characteristics of coal with different moisture contents are obtained. The results show that: (1) the deformation and failure process of coal under different moisture contents are similar, …
Simulations Of Temperature Effects On Seepage And Deformation Of Coal Micro- Structure Based On 3d Ct Reconstruction, Gang Wang, Xiang-Jie Qin, Cheng-Hao Jiang, Zhen-Yu Zhang
Simulations Of Temperature Effects On Seepage And Deformation Of Coal Micro- Structure Based On 3d Ct Reconstruction, Gang Wang, Xiang-Jie Qin, Cheng-Hao Jiang, Zhen-Yu Zhang
Rock and Soil Mechanics
In order to investigate the influence of temperature in deep coal mining area on coal seepage and pore fracture structure deformation, 3D CT reconstruction technology and ANSYS were used to simulate the process of conjugate heat transfer and thermal deformation of coal microstructure respectively. The conjugate heat transfer simulation results show that water was initially injected into the 80℃ coal wall at 20℃ was heated to 37.13℃ when it flows out. The temperature of the coal gradually decreases along the wall facing the fluid center. Pore fracture structure has an important influence on the velocity and the temperature of the …