岩石破碎过程中能量演化的模拟分析  

Rock Crushing Process Simulation Evolutionary Mechanisms Based on Energy Analysis

作　　者：赵志刚[1] 高成章[1] 贾志闯 宋璐璐[1] ZHAO Zhigang GAO Chengzhang JIA Zhichuang SONG Lulu(School of Mining and Safety Engineering, Shandong University of Seience and Technology, Qingdao, Shandong 266000, Chin)

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《矿业研究与开发》2016年第11期50-54,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(51474137)

摘　　要：为探求岩石加载方式与能量演化之间存在的规律,对岩石的破裂过程进行模拟研究,通过提出一种量化岩石能量损伤的新参数——岩石能量损伤参数D,利用FLAC3D的二次开发,对岩石破碎过程中各部分可释放弹性能、耗散能和总能量进行分析。研究表明,岩样破裂所需能量随着围压的增大成上凹增长曲线;岩石能量损伤参数D达到阈值时,岩石开始发生破坏,该阈值与围压的大小没有相关性。研究成果对进一步分析能量与岩石破坏强度的关系具有参考意义。In order to explore method and energy evolution, the law between rock loading rock failure process was simu- lated and studied. Then a new energy damage parameter D was proposed to quantify the energy damage of rock. And the releasable elastic energy, dissipation energy and total en- ergy of each part in the process of rock breaking were ana- lyzed by the secondary development of FLAC3D. The results showed that the energy of rock breaking grown as a concave curve with the increase of confining pressure. The rock began to break when the rock energy damage parameter D reached to the threshold. And there was no correlation between the threshold and the confining pressure. The results had refer- ence to further analyze the relationship between energy and strength of rock damage.

关 键 词：岩石力学 数值模拟 能量释放 能量损伤 三轴压缩 

分 类 号：TD313.1[矿业工程—矿井建设]