岩体破裂变形过程中AE时序特征研究

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英文篇名：Study the Characteristics of AE Temporal Sequences in the Process of Failure and Deformation of Rock 中文刊名：矿业研究与开发 英文刊名：Mining Research and Development 作者：何建平 ; 王宁 英文作者：He Jianping ; Wang Ning (1.School of Civil Engineering and Architecture ; Southwest University of Science and Technology ; Mianyang ; Sichuan 621020 ; China ; 2.Luoyang College of Technology ; Luoyang ; Henan 471003 ; China) 中文关键词：岩体破裂 ; 声发射 ; 时序 ; 特征 英文关键词：Rock failure ; Acoustic emission ; Temporal sequence ; Character 出版日期：2006-12-30 机构：西南科技大学土木工程与建筑学院,西南科技大学土木工程与建筑学院 四川绵阳市621010,洛阳工业高等专科学校,河南洛阳市471003,四川绵阳市621010 年：2006 期：06 出版单位：矿业研究与开发

摘要

对室内岩石声发射试验的事件率与应力关系曲线、事件时序分布进行了分析,研究了岩体破裂变形过程与声发射事件时序分布特征之间的相关规律。现场监测结果表明,岩体破裂变形过程中的声发射信号是随机的,非周期性的,随着地质环境等改变而改变;岩体声发射事件主频时序参数突变,由小突然增大,或是在连续增加时突然减少,都是临近破坏的征兆,可作为预测、预报岩体破裂失稳的依据。
Based on laboratory AE(acoustic emission) tests of rock,the relationship between stress and AE rate and the distribution behavior of AE temporal sequence in the process of failure and deformation have been studied.The related law of distribution characteristics of AE temporal sequence and the evolvement of rock crack is presented.The monitoring result on site shows that AE signal from rock crack evolvement is stochastic and non-periodic,varies with geologic environment etc.There are sudden changes of AE temporal sequence parameters of rock,and the changes are suddenly from small to larger or suddenly fall after continuous increasing,these are signs that rock approaches to damage,can be regarded as basis to forecast and predict fracture of rock mass.

引文

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