System Characteristics

Due to the relatively backward geophysical monitoring technology in mines, real-time and reliable monitoring and early warning of mine water inrush cannot be carried out yet. At present, the most widely used methods for water detection in mine prevention and control are transient electromagnetic method, direct current method, and seismic method for advance detection. The transient electromagnetic method is widely used due to its absolute sensitivity to water and ease of operation. However, comprehensive analysis shows that water inrush accidents in coal mines often occur during the mining process, with characteristics of suddenness, difficulty in fixed-point and timed detection. In order to monitor and warn of water inrush hazards in real time, a transient electromagnetic real-time monitoring system suitable for coal mine water inrush monitoring has been developed based on the transient electromagnetic advanced detection method and advanced equipment.

(1) The system has a compact hardware structure, is portable and safe, and is easy to install underground;

(2) The receiving system adopts network data transmission, with fast transmission speed and real-time data analysis;

(3) The transmission system adopts multi-channel transmission, which increases the signal-to-noise ratio and has strong anti-interference ability;

(4) It can collect high-density and big data signals and store them in large quantities, but can only be processed and analyzed in real-time by analysis software;

(5) Can monitor the transient electromagnetic signals of long profiles in the directions of mine roof, floor, and side walls. Cut off filter filters out unwanted fluorescence wavelengths.

application area

The transient electromagnetic method is used to delineate the water content in the working face (excavation head, side walls, roof and floor, mining face) of the mine