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对微震定位精度和稳定性控制一直是矿山微震监测工程的一个难题。通过对微震监测系统误差的深入剖析,提出了“统一定位误差”的概念,将微震定位的误差条件进行了前置性统一;结合非线性定位的特点,对微震定位参数进行了非线性变换,提出了降维定位的基本思路及实现方法,解释了平面截割定位的几何原理,揭示了微震定位(平面截割法)的基本实质,并研究了内、外场定位的定位稳定性及控制方法。研究表明,“统一定位误差”是实现对微震定位精度控制的前置杠杆及控制尺度,指出微震定位结果的精度从属于几何定位,单一数值解(迭代极小值或最优化极小值)不具备绝对工程意义。理论分析及试验结果证实,平面截割定位是控制内、外近场定位尺度条件下的控制定位稳定性的有效途径。
The control of microseismic location accuracy and stability has always been a challenge for mine microseismic monitoring. By analyzing the error of microseismic monitoring system deeply, the concept of “uniform positioning error” is put forward, and the error conditions of microseismic locating are preunified uniformly. Combined with the characteristics of nonlinear locating, the parameters of microseismic locating are nonlinear Transform and put forward the basic idea and realization method of dimensionality reduction positioning. The geometrical principle of plane cutting positioning is explained, the basic essence of microseismic positioning (plane cutting method) is revealed, and the positioning stability of inner and outer field positioning, Control Method. The research shows that the “uniform positioning error” is the pre-lever and control measure to control the microseismic locating accuracy. It is pointed out that the microseismic locating accuracy is subordinate to the geometric locating, single numerical solution (iterative minimum or minimum optimization ) Does not have the absolute engineering meaning. Theoretical analysis and experimental results show that plane cutting positioning is an effective way to control the stability of positioning under the condition of the inner and outer positioning scales.