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中文摘要：
以突出煤制备的型煤试件为研究对象，利用自行研制开发的装置配合岛津伺服试验机及PC—I型声发射监测系统，对含瓦斯突出煤三轴压缩过程中的声发射特性及其围压效应进行试验，并对AE事件各参数规律进行了分析。结果表明：三轴压缩过程中，含瓦斯突出煤AE事件没有特别稠密或稀疏的事件区域出现，仅在压密阶段、线弹性阶段中间点附近、临近峰值阶段3处出现相对稠密区而呈“三峰”分布特点，但多数AE事件振幅较小，且AE事件能量变化与振幅变化趋势具有较好的一致性；外加应力场变化导致微结构变化、煤样内颗粒断裂、煤样内颗粒碎裂、煤样内颗粒相对错动和瓦斯气体逸散导致的微结构变化为AE事件的主要“源”；随着围压的增加，AE事件数呈减小趋势，而围压对AE事件总数的影响呈非线性，可用二次曲线表示；随着围压的增加，AE大振幅事件数呈减小趋势，大于某一设定值的AE事件数与围压的关系可用二次曲线表示。
英文摘要：
Briquette samples made of outburst coal are taken as study objects to study AE characteristic and its confining pressure effect by using self-developed equipment, Shimazu servo test machine and AE monitor system, and the characteristic of AE parameters are analyzed, too. The results show that in the process of outburst coal containing gas triaxial compression, there is no serious dense or sparse area of AE events, but three relative dense appear in compression phase, middle area of linear elastic stage and near peaking phase area so that the characteristic of AE events look like three peaks. But the amplitude of AE events is small and the good consistency between energy change and amplitude change is showed. Microstructure change caused by external stress field change, fracture and fragmentation of particle of samples, movement besides particle of samples and microstructure change caused by dissipation of gas are the sources of AE events. The number of AE events is reduced as the confining pressure is increased, but the influence on total number of AE events caused by confining pressure show nonlinear, expressed by quadratic function. The number of larger amplitude of AE events show decreasing tendency as the confining pressure is increased, the relation between numbers of AE events whose amplitude is more than certain value and confining pressure is expressed by quadratic function.
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