摘要
对近20年来岩石声发射测量地应力的研究现状进行了分析,介绍了声发射的原理和机理及试样的空间定位方法。利用弹性力学原理推导了声发射方法测定地应力的空间6向和4向的计算过程,对应有两种常用的取样方式。系统地阐述了影响声发射地应力测量的因素、Kaiser点的确定方法以及信噪处理技术,简单介绍了不同于传统利用声发射测量地应力的另外两种方法。对声发射测量地应力中存在的问题和研究趋势进行了分析。
Based on periodical literature,the statistics of papers on accoustic emission since recent twenty years were made.The principle and mechanism of acoustic emission,space positioning for the samples were presented.With the theory of elastic mechanics,six direction and four direction methods in space for in-situ measurement using the rock acoustic emission were derived.There are two sampling methods according to the different methods.Influence factors of acoustic emission in in-situ stress measurement,determining method of Kaiser Point and treatment technique for signal and noise were systematically expounded.Two methods which are different from the traditional in-situ measurement are introduced.Problems and research trend of the in-situ stress measurement using acoustic emission were analyzed.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2011年第1期41-45,51,共6页
Coal Geology & Exploration
基金
河南理工大学博士基金项目(648198)
关键词
声发射
地应力
数字期刊
影响因素
信号分析
acoustic emissions
in-situ measurement
periodical literature
influence factors
signal analysis
