立井爆破振动信号混沌特征研究  

Study on Chaotic Characteristics of Blasting Vibration Signal in Vertical Shaft

作　　者：付晓强 雷振 崔秀琴[1,2] 杨国梁 刘纪峰[1,2] 刘幸[1,2] FU Xiaoqiang;LEI Zhen;CUI Xiuqin;YANG Guoliang;LIU Jifeng;JU Xing(School of Civil Engineering,Sanming University,Sanming 365004.China;Key Laboratory of Engineering Material&Structure Reinforcement in Colleges and Universities of Fujian Province(Sanming University),Sanming 365004,China;Institute of Mining Engineering,Guizhou Institute of Technology,Guiyang 550003,China;School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]三明学院建筑工程学院,福建三明365004 [2]工程材料与结构加固福建省高等学校重点实验室,福建三明365004 [3]贵州理工学院矿业工程学院,贵州贵阳550003 [4]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《煤矿安全》2019年第11期63-66,71,共5页Safety in Coal Mines

基　　金：国家自然科学基金面上资助项目（51274203,51664007）;三明学院引进高层次人才科研启动经费资助项目（18YG13）

摘　　要：采用传感器井壁预埋法对冻结立井爆破井壁振动信号进行了准确采集,运用混沌理论研究了频率切片小波各频带重构子信号的混沌动力学特征。通过吸引子轨迹变化对立井爆破信号特征进行了直观描述和定性分析。结果表明:立井爆破振动信号具有混沌特征,混沌吸引子在相空间的形态以主振频率所处的频带为分界线,在低于主振频率的子频带范围内,随着频率的增加混沌吸引子在相空间体积逐渐扩展并稳定;高于主振频率的子频带,随着频率的增加混沌吸引子体积收缩且离散。爆破混沌吸引子体积的变化有助于信号主频、幅值和能量信息的精确提取和识别。The vibration signal of blasting shaft wall of frozen shaft was accurately collected by the method of sensor shaft wall embedded,and chaos dynamics characteristics of reconstructed sub-signals in different frequency bands of frequency slice wavelet are studied by using chaos theory.The characteristics of shaft blasting signal are described and qualitatively analyzed by the change of attractor trajectory.The results show that the vibration signal of shaft blasting has chaotic characteristics,and the shape of chaotic attractor in the phase space is divided by the frequency band of the main vibration frequency,in the sub-frequency band lower than the main frequency the chaotic attractor gradually expands and stabilizes in the phase space volume with the increase of frequency;the volume of chaotic attractor shrinks and discretizes with the increase of frequency in the sub-frequency band higher than the main frequency.It is helpful to extract and identify the main frequency amplitude and energy information of the blasting chaotic attractor.

关 键 词：冻结立井 爆破振动 频率切片小波 混沌吸引子 非线性分析 

分 类 号：TD235.1[矿业工程—矿井建设]