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判断工程岩体,特别是矿山岩体的稳定性一直是为人们所关注的问题之一。声测是判断岩体稳定的一种重要手段。理论和实验表明岩体声衰减对岩体稳定性比声速更加敏感。 实验室测量岩石声衰减比较容易做到,而现场测量则较为困难。笔者利用单板机作为现场测量仪器。在测量中,充分表现出单板机的便携、实用、方便、结果可靠等优点。文中还从理论到实践解决了测试方法和计算方法等问题,并对用声衰减估计岩体稳定性作了初步评价。
Judging the stability of engineering rock mass, especially mine rock mass has been one of the concerns of people. Acoustic measurement is an important means to judge the stability of rock mass. Theoretical and experimental results show that rock mass attenuation is more sensitive to rock mass stability than sound velocity. Laboratory measurements rock sound attenuation is relatively easy to do, and on-site measurement is more difficult. The author uses the single board machine as the scene measurement instrument. In the measurement, fully demonstrated single-board machine portable, practical, convenient, reliable results. The article also solves the problems of test methods and calculation methods from theory to practice, and makes a preliminary evaluation of the rock mass stability assessment using sound attenuation.