A time-field search method was proposed for AE event source location, combining the grid search method and the database technique. Theoretical process was given, and laboratory hydraulic fracture stimulation experiments under true-triaxial confining stresses were performed to prove the practicability of the method. A regional velocity model with variable wave velocities and directionality was required to fit observations. The location results showed that time-field location method obtains the global optimal source location solution with a relatively high efficiency and accuracy.

中文翻译：

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区域速度模型的声源位置时域搜索方法

结合网格搜索和数据库技术，提出了一种AE事件源定位的时域搜索方法。给出了理论过程，并在真三轴约束应力下进行了实验室水力压裂增产实验，证明了该方法的实用性。需要具有可变波速和方向性的区域速度模型来拟合观测。定位结果表明，时域定位方法能够以较高的效率和精度获得全局最优的源定位解决方案。