摘要
为了研究煤矿掘进工作面前方煤体内不同深度的煤岩电磁辐射分布规律,利用KBD5电磁辐射监测仪对工作面前方煤体电磁辐射进行了现场测试,基于煤岩电磁辐射力电耦合规律,对煤岩变形破裂过程与电磁辐射强度的相关性进行了理论分析.结果表明:电磁辐射变化与煤体应力状态有较好的对应关系,工作面煤体内部具有多种应力状态和变形破裂状态.文中给出了比较典型的4种电磁辐射分布类型:煤体长期暴露的电磁辐射分布、防突措施后电磁辐射分布、新揭露煤体电磁辐射分布、有构造煤层的电磁辐射分布.
In order to study the electromagnetic radiation （EMR） signals of different depths in driving working face were experimentally tested with KBD5 EMR monitoring equipment. Based on the coupling rule of stress and electricity, the relativity of deformation and fracture process of coal or rock and intensity of EMR was analyzed theoretically. The results show that there is a good relation between EMR and the coal stress state, and there are various stress states and deformation and fracture states in coal seam of working faces. There are 4 typical EMR distri- bution types： that of coal seam long time exposed, that of coal seam after taking coal and gas outburst prevention measures, that of coal seam newly exposed, that of coal seam having structure.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2007年第2期142-147,共6页
Journal of China University of Mining & Technology
基金
国家自然科学专项基金项目(50427401)
国家"十五"科技攻关项目(2004BA803B0105)
国家重点基础研究发展规划(973)项目(2005CB221505)
江苏省自然科学基金(BK2001075)
关键词
掘进工作面
电磁辐射分布
应力分布
煤与瓦斯突出
drivage face
electromagnetic radiation distribution
stress distribution
coal and gas outburst
