开展红砂岩试件的单轴压缩试验，研究双差定位法在岩石声发射定位中的应用。通过CCD相机采集加载过程中的散斑图像，采用数字散斑相关方法计算得到岩石变形场，同时采集岩石声发射信号，并由岩石双差定位法计算得到声发射定位图，对岩石变形场演化及声发射的时空演化进行分析。结果表明：岩石双差定位法在声发射定位中的应用效果良好，定位得到的声发射事件区域与岩石变形场的变形集中区域的走向基本一致，且在加载过程中声发射事件区域的演变与变形场的演化契合良好。

The uniaxial compression test of red sandstone specimens was carried out to study the application of double difference location method in rock AE localization. The CCD camera collected the speckle image during the loading process, and DSCM (Digital Speckle Correlation Method) was used to calculate the rock deformation field. At the same time, the rock AE signal was collected, and the AE localization map was calculated by the rock double difference location method. The spatiotemporal evolution of AE was analyzed. The results showed that the rock double difference location method had a good application effect in AE localization. The AE event region was basically consistent with the deformation concentrated region of the rock deformation field, and the evolution of the AE event region was well matched with the evolution of the deformation field during loading.