摘要
实验研究了含瓦斯煤体变形破裂时产生的电磁辐射现象 ,并考察了电磁辐射与声发射的关系。结果表明 ,含瓦斯煤体在受载破坏时能够产生电磁辐射 ,电磁辐射与声发射并非严格同步 ;电磁辐射信号随着载荷的增大而增强 ,随着载荷的降低而减弱 ,在煤体受载的全过程基本上都出现 。
Electromagnetic Emission(EME) phenomena during the deforming and fracturing of coal body containing gas is experimentally studied ,and the relation between EME and acoustic emission(AE) considered. The resuts show that EME can be produced during the defoming and fracturing of coal containing gas;EME and AE are not strictly synchronous;EME signal enhances (or reduces) with the increase(cor decrease) of the loading is presented in the whole process of coal body being loaded and this result of experiments can be used as the theoretical basis for prediction of coal and gas outbursts.
出处
《煤矿安全》
CAS
北大核心
2000年第4期38-41,共4页
Safety in Coal Mines
基金
国家"九五"攻关计划!(96-223-01-04-03)
国家自然科学基金资助项目 !(59874028)
关键词
煤体
变形破裂
电磁辐射
实验研究
瓦斯突出
coal body containing gas: electromagnetisc emission(EME) acoustic emission(AE) coal and gas outburst
