A5102948704- Rock Mechanics and Modeling
- Structural Response to Dynamic Loads
- Geotechnical and Geomechanical Engineering
- Geomechanics and Mining Engineering
- Structural Behavior of Reinforced Concrete
- Structural Load-Bearing Analysis
- Coal Properties and Utilization
- Drilling and Well Engineering
- High-Velocity Impact and Material Behavior
- Landslides and related hazards
- Grouting, Rheology, and Soil Mechanics
- Geophysical Methods and Applications
China State Construction Engineering (China)
2023
China University of Mining and Technology
2018-2020
This paper presents an innovative method for using foam concrete as a typical building material soft structures in underground coal mines subjected to dynamic loading. To understand the behaviour of under impact loading, total 30 specimens with diameter 50 mm and height were experimentally tested 75 split Hopkinson pressure bar (SHPB) device. The key parameters investigated present study included type (fly ash sand), density (1000, 1200 1400 kg/m 3 ), velocity (3.0, 4.0, 5.0, 6.0, 7.0 m/s)....
Rock burst is a physical explosion associated with enormous damage at short time. Due to the complicity of mechanics rock in coal mine roadway, direct use traditional investigation method applied tunnel inappropriate since components surrounding are much more complex underground than that tunnel. In addition, reliability results obtained through these methods (i.e., simulation, theoretical analysis, and monitoring filed application) still not certain geological conditions. Against this...
A novel method for fracturing coal is presented in this paper. chemical solution injected into under high pressure, whereby the fractured and subsequently weakened by erosion over time to produce an anti‐impact soft structure. In study, mechanical properties of were investigated, design parameters optimized. The uniaxial compression test split Hopkinson pressure bar (SHPB) used determine dynamic static after 20 days immersion different solutions. After erosion, compressive strengths elastic...
A coal‐rock (CR) combined body can be used to simulate structures of coal and rock strata, its impact‐induced failure characteristic conforms more close engineering practice. Exploring the mechanical properties impact energy in a CR contributes better predictions bursts mines. In study, bodies with four different inclinations (0°, 15°, 30°, 45°) structural planes were measured, also their mechanism was analysed. Based on theory particle mechanics, calculation model for established then...
An experimental investigation of circular concrete-filled steel tubular (CFST) columns subjected to very low-elevation lateral impacts was performed. Six CFST members were prepared for impact tests according the typical in high-speed railway stations China, and location at height 2/9 column. The had three variables: thickness tube, velocity, axial load. failure modes determined tests, along with time histories force deflection location. A finite-element analysis performed examine effects...
Abstract An experimental investigation of circular concrete-filled steel tubular (CFST) columns subjected to very low-elevation lateral impacts was performed. Six CFST members were prepared for impact tests according the typical in high-speed railway stations China. The location at height 2/9 column, which determined point between running train and column. There three variables tests: thickness tube, velocity, axial load. failure modes tests, along with time histories force deflection...