PROGRESS OF ACOUSTIC WAVE TECHNIQUE ANDITS APPLICATION IN UNDERGROUND PRESSURE MEASUREMENT

This paper carries out tbe experirnent study on the correlation between am stress-strain process of rock samples and the acoustie parameter change of rock by using the measurement system of KS acoustic wave data processing device. On the spot, the stability of surrounding rock is studied by means of experiments on the relationship between the change process (from elastie to plastic failure zone) in surrounding rock of roadway and the change law of acoustic parameters of rock. These acoustie parameters inelude wave amplitude, spectral amplitude, spectrum area, spectral density,wave veloeity and attenuation coefficient etc.

声波技术的进展及其在矿山压力测试中的应用

本文叙述了应用KS声波数据处理的量测系统,对岩石试件全应力～应变过程与岩石声学参数变化的相关性的试验研究,在现场,对巷道围岩内从弹性至塑性破坏圈的变化过程与岩石的声学参数变化规律的试验研究,用以研究巷道围岩的稳定性。这些岩石声学参数为波幅、谱幅、谱面积、谱密度、波速度、衰减系数等。