循环加载对煤的能量聚集释放影响分析

Effect Analysis of Coal Cyclic Loading on Energy Accumulation and Release

为了研究循环加载对煤能量聚集和释放的影响,对煤样进行单轴压缩循环加载实验,分析得出循环次数与弹性模量大致呈正相关关系;随着循环次数的增加,弹性应变能大致呈增加趋势,塑性应变能呈减少趋势。同时,随着循环次数的增加,耗散能呈现增加趋势。

To study the effect of cyclic loading on coal energy accumulation and release,doing cyclic loading test of uniaxial compression on coal samples. Analysis shows that the number of cycles and the modulus of elasticity are positivey correlated substantially; with the increase of the number of cycles, elastic strain energy substantially on increasing trend,shaping strain energy on decreasing trend.At the same time,with the increase of the number of cycles,dissipated energy also on rising trend.