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中文摘要：
continua (FLAC ) 的快 Lagrangian 分析被用来直接在飞机紧张在岩石标本的机械行为上学习毛孔压力的影响砍，产出的元素的分发，排水量和速度越过的分发砍乐队以及突然将球踢回(有弹性的反弹) 不稳定性。有效压力法律被用来代表变弱在压力下面包含毛孔液体的岩石。数字结果证明那个岩石标本变得软(更低的力量和变硬的模量) 作为毛孔，压力增加，导致更高的排水量翻斗车到对面砍乐队。在塑料地区的更大的区域的更高的毛孔压力结果，更高的集中砍紧张，到突然将球踢回(不稳定的失败) 的更明显的先锋和更慢的突然将球踢回。为更高的毛孔压力，形成砍乐队橡皮身体系统和突然将球踢回更早；突然将球踢回的距离减少；突然将球踢回的能力减少，导致在不稳定性和更低的地震或 rockburst 大小以外解放的更低的有弹性的紧张精力。在突然将球踢回的过程，速度翻斗车越过砍乐队为在更高的毛孔压力的岩石标本是更低的，显示出突然将球踢回的更慢的速度。
英文摘要：
Fast Lagrangian analysis of continua（FLAC） was used to study the influence of pore pressure on the mechanical behavior of rock specimen in plane strain direct shear, the distribution of yielded elements, the distribution of displacement and velocity across shear band as well as the snap-back （elastic rebound） instability. The effective stress law was used to represent the weakening of rock containing pore fluid under pressure. Numerical results show that rock specimen becomes soft （lower strength and hardening modulus） as pore pressure increases, leading to higher displacement skip across shear band. Higher pore pressure results in larger area of plastic zone, higher concentration of shear strain, more apparent precursor to snap-back （unstable failure） and slower snap-back. For higher pore pressure, the formation of shear band-elastic body system and the snap-back are earlier; the distance of snap-back decreases; the capacity of snap-back decreases, leading to lower elastic strain energy liberated beyond the instability and lower earthquake or rockburst magnitude. In the process of snap-back, the velocity skip across shear band is lower for rock specimen at higher pore pressure, showing the slower velocity of snap-back.
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