非煤矿山采空区光纤监测研究

A Study on Fiber Optic Surveillance of the Mined-out Area of Non-coal Mines

非煤矿山采空区大面积垮落会引起地表开裂、塌陷、矿震等恶性事故,为了对采空区进行监测,开发了基于先进的光纤传感技术的光纤位移、应力和微震传感器,将这些传感器进行集成,建立针对非煤矿山采空区的监测系统,并在铁矿进行了现场示范。试验结果表明,基于光纤传感技术的非煤矿山采空区监测系统运行良好,试验数据可信,具有很好的推广潜力。

The collapse of the mined-out area of a non-coal mine would cause surface subsidence and collapse, micro-seismism, etc. We developed fiber optic sensor technology based fiber displacement, stress and seismic sensors to surveil the mined-out area, and then integrated them to one surveillance system, which was demonstrated in an iron ore mine. Experimental results show that the system works well and the test data are credible, so it has good potential power of generalization.