Yunjiang Sun
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View article: Investigation on Principal Stress Rotation and Instability Mechanism of Coal Pillar Induced by Key Strata Bending Deformation Near Goaf
Investigation on Principal Stress Rotation and Instability Mechanism of Coal Pillar Induced by Key Strata Bending Deformation Near Goaf Open
Coal mining will lead to rock strata bending deformation and the redistribution of stress field. The change of principal stress magnitude and direction will influence the failure zone distribution of the coal pillar, which determines the s…
View article: Asymmetric analogous hyperbola model of overburden movement and its verification
Asymmetric analogous hyperbola model of overburden movement and its verification Open
The extraction of underground coal resources induces the fracture and movement of overlying strata, leading to geological hazards such as surface deformation, cracks, and even subsidence. Utilizing the analogous hyperbola model of overlyin…
View article: Effective Risk Assessment and Management with IoT in Supply Chains
Effective Risk Assessment and Management with IoT in Supply Chains Open
Supply chain risk management is a critical area in today’s globalized economy, and with the development of Internet of Things (IoT) technology, revolutionary changes are taking place in risk assessment and management methods. This paper ai…
View article: Investigation on Coal Pillar Stability between Different Shapes of Gasifier Cavities under High Temperatures during UCG
Investigation on Coal Pillar Stability between Different Shapes of Gasifier Cavities under High Temperatures during UCG Open
The shape of the gasifier cavity and the high temperatures induced by underground coal gasification (UCG) have a significant influence on the failure characteristics of the surrounding rock. In this study, the variations in the mechanical …
View article: Multi-scale failure mechanics of rock in mining engineering
Multi-scale failure mechanics of rock in mining engineering Open
In mining engineering, the multi-scale failure behavior of surrounding rock under the complex stress environment is a fundamental influencing factor of disasters. This paper systematically summarizes our recent ten years' research progress…
View article: Experimental Investigation on the Correlation between Dynamic Ultrasonic and Mechanical Properties of Sandstone Subjected to Uniaxial Compression
Experimental Investigation on the Correlation between Dynamic Ultrasonic and Mechanical Properties of Sandstone Subjected to Uniaxial Compression Open
Ultrasonic wave velocity is effective to evaluate anisotropy property and predict rock failure. This paper investigates the correlation between dynamic ultrasonic and mechanical properties of sandstones with different buried depths subject…
View article: Investigation on whole failure nonlinear model for deep coal-rock combined bodies
Investigation on whole failure nonlinear model for deep coal-rock combined bodies Open
Coal is a kind of complex geological body with a large number of cracks and pores.In the coal-rock combined bodies, rocks are the hard part and coal and its internal cracks, pores and the interface between coal and rock are put together to…