井下噪声的频谱分析  

Analysis of the Spectrum in Mines

作　　者：钟全亮[1] 刘先勇[1] 倪士虎[1] 于群[1] 王涛[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621000

出　　处：《新技术新工艺》2014年第8期87-89,共3页New Technology & New Process

基　　金：西南科技大学与四川省煤炭产业集团重大合作资助项目(07zh0164);国防预研基金资助项目(A3120060267);四川省教育厅重大培育资助项目(07zz039);四川省安监局资助项目(07zd0103

摘　　要：噪声是一种普遍存在于各种环境的有害因素。针对矿井下恶劣的环境,用噪声振动分析测试仪对井下的压风机、局扇和风锤的噪声信号进行数据采集及分析,得到压风机、局扇和风锤的最大噪声级强度分别为101.3、104.4和120 dB,并明确了噪声源的分布规律。用DSO-2902数字存储示波器分析得出了噪声的频谱成分和频谱结构:移动压风机的频率为20 Hz^3 kHz,局扇的频率为20 Hz^4.5 kHz,风锤的频率范围为20 Hz^10 kHz。Noise is a kind of harmful factors existing in various environments. The vibration noise signal analysis instru- ments acquire and analyses data by measuring noise signal of pressure fan, local fan and pneumatic hammer in mines. The studies showed that the maximum noise level intensity of the pressure fan, local fan and pneumatic hammer was respectively 101.3, 104.4 and 120 dB. The experimental results showed the distribution of the source of the noise. The studies revealed the noise frequency spectrum and spectrum structure by the DSO-2902 digital storage oscilloscope. The frequency range of pressure fan was20 to 3 000 Hz, the frequency of local fan was 20 to 4 500 Hz and pneumatic hammer was 20 to 10 000 Hz.

关 键 词：噪声 频谱分析 测量 矿井 

分 类 号：X593[环境科学与工程—环境工程]