منابع مشابه
Loading Rate Dependency of Dynamic Responses of Rock Joints at Low Loading Rate
List of Symbols ej Measured strain wave at the position of the gauge j (j = a, b) e; e Positive and negative strain waves, respectively epj ; e n j Positive and negative strain waves at the position of the gauge j (j = a, b), respectively ei; er; et Incident, reflected and transmitted strain waves, respectively e ; epþ Positive strain waves at the front and back sides of rock joints, respective...
متن کاملEffects of Loading Rate on Gas Seepage and Temperature in Coal and Its Potential for Coal-Gas Disaster Early-Warning
The seepage velocity and temperature externally manifest the changing structure, gas desorption and energy release that occurs in coal containing gas failure under loading. By using the system of coal containing gas failure under loading, this paper studies the law of seepage velocity and temperature under different loading rates and at 1.0 MPa confining pressure and 0.5 MPa gas pressure, and c...
متن کاملThree Generations of Coal Loading Control
A new control system for Anglo Coal’s Rapid Loading Terminal was commissioned in 2003. This paper reviews the history of the control systems at the terminal, highlighting the radical changes in hardware, software and system architecture that have taken place since it was first opened in 1976.
متن کاملMechanical Behavior of Methane Infiltrated Coal: the Roles of Gas Desorption, Stress Level and Loading Rate
We report laboratory experiments to investigate the role of gas desorption, stress level and loading rate on the mechanical behavior of methane infiltrated coal. Two suites of experiments are carried out. The first suite of experiments is conducted on coal (Lower Kittanning seam, West Virginia) at a confining stress of 2 MPa and methane pore pressures in the fracture of 1 MPa to examine the rol...
متن کاملEffect of Duration and Rate of Loading on Strength of Wood and Wood-based Materials
This study reviews world literature on the strength-related effect of duration and rate of loading on wood and wood-based materials. Also, early developments are discussed which led to the currently used permanent loading factor of 9/16. Published data on duration of load are reanalyzed and compared. The comparisons suggest that the effect of stress level on duration of stress for wood is great...
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ژورنال
عنوان ژورنال: Shigen-to-Sozai
سال: 2002
ISSN: 0916-1740,1880-6244
DOI: 10.2473/shigentosozai.118.23