摘要
理论分析了煤岩变形破坏过程中电磁辐射脉冲数与损伤之间的关系,探讨了煤岩变形破坏电磁辐射产生机制及电磁辐射记忆效应的力电耦合规律,建立了等围压三轴应力状态下含瓦斯煤岩变形破坏电磁辐射记忆效应的力电耦合模型,实验测定并分析了单轴压缩状况下含瓦斯煤岩变形破坏电磁辐射记忆效应的力电耦合规律.结果表明,含瓦斯煤岩变形破坏电磁辐射记忆效应力电耦合模型很好地反映了煤岩变形破坏电磁辐射记忆效应特征规律和微观损伤机理.
We have analyzed the relations between electromagnetic emission （EME） pulse numbers and damage parameters and discussed the EME producing mechanism and electro-mechanical coupling laws of EME memory effect during deformation and fracture of coal or rock, established the EME memory effect electro-mechanical coupling model of coal or rock containing gas deformation and fracture under conditions of equal ambient pressure and triaxial compression, tested and analyzed EME memory effect electro-mechanical coupling law of coal or rock containing gas under condition of uniaxial compression. The results show that the EME memory effect electro-mechanical coupling model of coal or rock containing gas primely reflects the characteristic laws and microcosmic damage mechanism of EME memory effect during deformation and fracture of coal or rock.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第5期1517-1522,共6页
Chinese Journal of Geophysics
基金
国家自然科学基金项目(50574050
50204010)
建设部科技项目(04-2-015)
校博士基金项目(C2004-201)资助
关键词
煤岩
电磁辐射
记忆效应
力电耦合
Coal or rock, Electromagnetic emission, Memory effect, Electro-mechanical coupling
