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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。
In order to study the effect of cyclic loading on the energy accumulation and release of coal, uniaxial compression cyclic loading experiments on coal samples were carried out. The results showed that the number of cycles was approximately positively correlated with the elastic modulus. With the increase of the number of cycles, the elastic strain energy was approximately Increasing trend, plastic strain can show a decreasing trend. At the same time, as the number of cycles increases, the dissipation energy shows an increasing trend.