摘要
岩体声波衰减品质因素Q值是反映岩体完整性程度的综合参数。寻找稳定、可靠、简便的计算方法是将Q值应用于现场测试的关键。本文通过对岩体声波衰减品质因素Q值的各种计算方法的讨论,提出了时域内计算Q值的能量法。该方法的理论依据是岩体的声波衰减直接与能量有关。该方法对测试仪器和声发射源无特殊要求,并可对任意测试距离的声波信号进行数据处理。计算过程简单而结果稳定可靠,是现场声波测试中计算Q值较为理想的方法。
The quality factor Q of the acoustic wave attenuation is a comprehensive parameter reflecting the integrality degree of rock mass. Finding out a constant, reliable and simple calculation method is the key to use the Q value into practical measuring. This paper presents the energy method to calculate Q values in the time domain by discussing all kinds of methods for calculating the Q values. This method is based on the fact that the acoustic wave attenuation is related to the energy and does not require special measuring systems and the source of acoustic wave. It can process the data received from any distances. The calculating method is very simple and reliable. It is an ideal method to calculate the Q value in practical measuring.
出处
《中国矿业》
1992年第2X期70-73,共4页
China Mining Magazine
关键词
岩体
衰减
品质因素
Q值
声波
Rock mass
Attenuation
Quality factor
Energy method.
