煤矿安全2019，Vol.50Issue(4)：32-36,5.DOI:10.13347/j.cnki.mkaq.2019.04.008
基于透射槽波的采煤工作面陷落柱探测模拟研究
Simulation Study on Detection of Collapse Column in Coal face Based on Transmitted Slot Wave
摘要
Abstract
The existence of subsidence column causes difficulties in coal mining, therefore, according to the structure, physical parameters and acoustic characteristics of coal seam collapse pillar, the coal powder, gypsum and cement are selected as raw materials, and the "rock-coal (containing collapse pillar)-rock"three-layer model is designed to study the coal seam with collapse pillar. The acoustic instrument controls the amplitude and frequency of the source, and the channel wave data is collected by transmission method. The amplitude energy attenuation coefficients of each channel are calculated by using the transmitted slot wave data, the wave velocity is analyzed by using the slot wave data waveform, and the existence position of collapse column is determined by using the time-frequency analysis method of Smoothed Pseudo Wigner-Ville distribution (SPWVD). The results show that the collapse column in the coal face can be effectively identified by analyzing the velocity of the transmitted slot wave and using SPWVD to analyze the energy characteristics of the transmitted slot wave, the collapse column in coal face can be identified effectively based on the maximum amplitude attenuation coefficient of slot wave.关键词
物理模拟/透射法槽波勘探/陷落柱/衰减系数/速度分析/SPWVDKey words
physical simulation/transmission method slot wave exploration/collapse column/attenuation coefficient/velocity analysis/SPWVD分类
天文与地球科学引用本文复制引用
马欣,杨思通,李新凤,郭晓东,白锦琳,文志杰,张亮..基于透射槽波的采煤工作面陷落柱探测模拟研究[J].煤矿安全,2019,50(4):32-36,5.基金项目
安徽理工大学硕博启动资金资助项目(ZY030) （ZY030）
