论文部分内容阅读
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 the regularity between the rock loading method and energy evolution, the fracture process of the rock is simulated. By proposing a new parameter for quantifying rock energy damage-rock energy damage parameter D, and utilizing the secondary development of FLAC3D, Rock fragmentation in the various parts of the elastic energy can be released, dissipated energy and total energy for analysis. The results show that the energy required for the rupture of rock samples increases with the increase of confining pressure, and the rock begins to break down when the energy damage parameter D reaches the threshold, which is not related to the confining pressure. The research results have reference significance for further analysis of the relationship between energy and rock failure strength.