The behavior of rock mass is governed by the properties of both the rock material and discontinuities in the rock mass. Surrounding environments including the existence of water also have a great influence on the behavior and mechanical properties of rocks. In this study, a novel-designed compression and seepage testing system, associated with an acoustic emission system, was designed and constructed. The changes in the specimens resulting from the uniaxial compression were monitored by an acoustic emission technique. The characteristics of the acoustic emission parameters at different stages including compaction and crack initiation, crack propagation, and catastrophic failure were analyzed. The existence of seepage had direct influences on the mechanical properties and failure patterns of the specimens. The specimens tested in pure compression conditions demonstrated strong burst proneness and ruptured into separate pieces, while for the specimens with seepage, no burst proneness was observed and the specimens tended to fail along a macroscopic shear failure plane. The highest average energy of the acoustic signal occurred at the stage of initial rupture of rock specimens, rather than at the stage of widespread rupture. The studies explored the possibilities of using the acoustic emission technique to investigate the problems associated with the seepage in geotechnical and rock engineering and provided meaningful results for further research in this field.

中文翻译：

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声发射技术研究渗流对岩石力学性能的影响

岩体的行为受岩石材料和岩体中不连续性的属性的控制。包括水的存在在内的周围环境也对岩石的行为和力学性质有很大影响。在这项研究中，设计并建造了一种与声发射系统相关的新型压缩和渗流测试系统。通过声发射技术监测由单轴压缩引起的试样的变化。分析了压实和裂纹萌生、裂纹扩展和灾难性破坏等不同阶段的声发射参数特征。渗流的存在直接影响试件的力学性能和破坏模式。在纯压缩条件下测试的试样表现出强烈的爆裂倾向并破裂成单独的碎片，而对于渗流的试样，没有观察到爆裂倾向，并且试样倾向于沿宏观剪切破坏平面破坏。声信号的最高平均能量出现在岩石标本的初始破裂阶段，而不是广泛破裂阶段。这些研究探索了使用声发射技术研究岩土工程和岩石工程中与渗漏相关的问题的可能性，并为该领域的进一步研究提供了有意义的结果。没有观察到爆裂倾向，试样倾向于沿宏观剪切破坏平面破坏。声信号的最高平均能量出现在岩石标本的初始破裂阶段，而不是广泛破裂阶段。这些研究探索了使用声发射技术研究岩土工程和岩石工程中与渗漏相关的问题的可能性，并为该领域的进一步研究提供了有意义的结果。没有观察到爆裂倾向，试样倾向于沿宏观剪切破坏平面破坏。声信号的最高平均能量出现在岩石标本的初始破裂阶段，而不是广泛破裂阶段。这些研究探索了使用声发射技术研究岩土工程和岩石工程中与渗漏相关的问题的可能性，并为该领域的进一步研究提供了有意义的结果。