孤岛工作面采动电磁辐射响应规律研究

梁北煤矿11061工作面是一个典型的孤岛工作面，且其他邻近工作面多次出现过动力灾害，因此，在111061工作面回采过程中，进行了电磁辐射监测，分析了回风巷、胶带运输巷和工作面回采初期和中后期的电磁辐射变化规律，发现回采初期电磁辐射水平整体较低，中后期工作面进入全孤岛开采，电磁辐射水平较高；电磁辐射随时间响应能明确反映周期来压过程，周期来压之前，电磁辐射持续升高，顶板断裂，压力释放，电磁辐射随之降低。

Study on Response Laws of Electromagnetic Radiation Due to Mining on Isolated Island Working Face

11061 working face of Liangbei Coal Mine is a typical island working face，several dynamic disaster power and high stress appearance occured on other adjacent working faces. Therefore，in the process of mining，the electromagnetic radiation monitoring was carried out，the variation laws of electromagnetic radiation were analysed in the early of mining in return airway，belt transport roadway，and middle and late period of working face mining. It was found that，in the early period of coal winning，the overall of electromagnetic radiation is low，in the late period，the electromagnetic radiation is higher due to the beginning of the whole island working face mining. The response of electromagnetic radiation can clearly reflect the process of periodic weighting，before the periodic weighting，electromagnetic radiation continues to rise，once roof fractures and pressure releases，the electromagnetic radiation decreases.