基于Matlab的矿震信号小波分析  

Wavelet Analysis of Rock-burst Signal Based on the Matlab

作　　者：孙兴林 匡中文 王晨辉 贺虎[2] 

机构地区：[1]河南煤化永煤控股公司城郊煤矿,河南永城476600 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《煤矿安全》2012年第6期168-171,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展规划(973计划)资助项目(2010CB226805);国家自然科学基金资助项目(50490273)

摘　　要：矿井微震监测在防治冲击矿压方面已经成为一种有效的手段,它主要是通过布置在矿区范围内的矿震监测系统,记录到矿震震动波形,然后对矿震波形进行分析处理,从而确定矿震震源的位置和能量大小,以Matlab软件为平台,通过对矿震信号的小波分析,根据连续小波变换能检测到信号的突变点,从而能够确定矿震信号P波初动的时间;最后进行小波去噪,能有效地去除掉了矿震信号中的噪声信号。Mine seismic monitoring has been a kind of effective method for preventing rock-burst.Mainly through the arrangement of the mining area rock-burst monitoring system,it recorded the mine earthquake seismic wave,then processed and analyzed the seismic wave form,thus determined location and energy size of the rock-burst seismic source.Based on Matlab software,and through wavelet analysis of rock-burst signal,according to continuous wavelet transform to detect mutant site of the signals,thus it able to determine the original time of the rock-burst signal P-wave.Finally,it can effectively get rid of the noise from rock-burst signal through wavelet denoising.

关 键 词：矿震信号 小波变换 突变点检测 信号去噪 

分 类 号：TD315[矿业工程—矿井建设]