摘要
冲击矿压的发生主要是能量积聚,然后突然释放的结果。在冲击发生过程中,有应力的集中、煤岩体的变形破坏。而煤岩体变形破坏过程中,会产生电磁辐射现象。因此,可采用电磁辐射法来预报冲击矿压。研究表明,煤岩体中应力值不同、煤岩体破坏程度的不同,电磁辐射也不会相同。电磁辐射现象与煤岩应力、变形破坏以及冲击矿压存在电磁耦合规律。以电磁耦合规律为基础,通过观测煤岩体的电磁辐射参数,如幅值、脉冲数等,从而可以确定冲击矿压的危险状态,达到预报冲击矿压的效果。
Rock-burst is the consequence of energy accumulation and suddenly releasing.In the process of rock-burst,stress concentration and the deformation and failure of rock always exists.The electromagnetic emission（EME） will be formed during the process of coal rock deformation and failure.Therefore,the EME can be used to forecast rock-burst.Study shows that different value of stress in coal and rock and different extend of broken,will produce different electromagnetic emission.There is coupling rule between EME and coal rock stress and rock-burst.Based on the electromagnetic coupling rule,we can determine the risk of rock-burst and then forecast rock-burst through the observation of coal and rock electromagnetic emission parameters,such as amplitude,pulse etc.
出处
《山西焦煤科技》
2010年第7期32-34,共3页
Shanxi Coking Coal Science & Technology
关键词
电磁辐射
冲击矿压
耦合规律
Electromagnetic emission
Rock-burst
Coupling rule
