Junguang Wang

Study on the response mechanism characteristics of fault activation under the mining effect of thick coal seam

Yang Song, Junguang Wang, Jie Chen, Bing Liang et autres

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Study on Deformation characteristics and damage evolution of water-bearing coal under cyclic loading

Tianyu Xin, Ji Yang, Junguang Wang, Gang Bai et autres

To study cyclic loading effects on hydrated coal deformation, triaxial tests with variable loading paths were performed using acoustic emission(AE) monitoring. Results show that cumulative and irreversible coal strains increase cyclically with diminishing increments. Experimentally, raising cyclic stress lower limit, load amplitude, …

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Macro-Meso failure mechanisms and slip characteristics of jointed sandstone under uniaxial compression

Junguang Wang, Liang Bing, Tianyu Xin, Lingran Ren

Fault sliding is one of the important causes of induced coal mine dynamic disasters during deep mining. To systematically investigate the slip behavior of fault structures under in-situ stress conditions, jointed sandstone specimens with different joint inclinations were prepared, and uniaxial compression …

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Study on Deformation Characteristics and Damage Evolution of Water-Bearing Coal Under External Cyclic Loading

Tianyu Xin, Ji Yang, Junguang Wang, Gang Bai et autres

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Experimental Study on the Evolution Trend of the Pore Structure and the Permeability of Coal under Cyclic Loading and Unloading

Tianyu Xin, Bing Liang, Junguang Wang, Weiji Sun et autres

In the deep mining process of coal seams, the mechanical environment of the coal body is complex and in the state of cyclic loading and unloading. The change in the stress state leads to the change in the pore characteristics and the …

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Influence of Unloading Conditions of Confining Pressure on the Compressive Strength and Permeability of Deep Mudstone

Tianyu Xin, Yashengnan Sun, Junguang Wang, Weiji Sun

To investigate the compressive strength and permeability of deep mudstone under stress disturbance, a triaxial rheometer is used to conduct seepage experiments on mudstone specimens with different buried depths under triaxial compression and unloading conditions. The experimental results show that the compressive …

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STUDY ON SAFETY OF COMBINED MINING OF EXTREMELY-NEAR LOCATED COAL BEDS IN DAANSHAN COAL MINE

Junguang Wang, Wang Pengjin, Bing Liang, Li Cunzhou

Tri-axial compression test study on mechanical characteristics of oil shale under the water

Junguang Wang

For researching mechanical properties of oil-shale,a sample form Yedian of Jilin Province was obtained and studied by using the hydraulic testing enginery of YE-200A and a home-made tri-axial stress room to do tri-axial compression experiments on the oil-shale.With tri-axial compression tests under …

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