基于非平衡统计的塌陷区岩体断裂失稳声发射信号分析  

ANALYSIS ON ACOUSTIC EMISSION SIGNAL FROM ROCK DAMAGE IN SUBSIDING AREA BASED ON NON-BALANCED STATISTICS

作　　者：来兴平[1] 蔡美峰[1] 

机构地区：[1]北京科技大学土木与环境工程学院

出　　处：《岩石力学与工程学报》2004年第2期272-276,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(50074002);教育部博士点基金(2000000802)资助项目

摘　　要：尝试利用裂隙演化的非平衡统计理论对岩体断裂的非线性动力学问题进行简单描述,借助统计理论和扫描电镜(SEM)手段,对塌陷区围岩断裂失稳的声发射信号的特征参数进行系统分析,为塌陷区失稳位置的反演和准确推断提供了依据。The nonlinear dynamics problem related to rock fracturing is simply described based on the non-balanced statistical theory of crack evolvement. By use of the hybrid analysis of the statistical theory and scan electron microscopy (SEM),the characters of acoustic emission (AE) signals coming from rock damage in subsiding area are synthetically analyzed and evaluated. These provide an evidence to reversely deduce and accurately infer the position of rock fracture and damage in subsiding area.

关 键 词：塌陷区 岩体断裂 断裂力学 声发射信号 扫描电镜 非平衡统计 

分 类 号：TD325.1[矿业工程—矿井建设]