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使用TOSHIBA—EDAX—9100即时拉伸SEM,进行了中硬肥煤与坚硬无烟煤的即时压缩SEM损伤扩展规律研究。发现煤岩损伤产生的诱导因素和起裂应力特征,揭示煤岩损伤扩展具有沿晶扩展、回避强带扩展和弱带优势导向扩展规律。
Using TOSHIBA-EDAX-9100 real-time tensile SEM, the real-time SEM study of the damage propagation of medium-hard coal and hard anthracite was carried out. The inducing factors of coal and rock damage and the characteristics of initiation stress are found out. It is revealed that the damage extension of coal and rock has the rule of crystal growth, avoiding strong band expansion and weak band leading.