Design of Monitoring System of Mine Water Drainage Based on PLC

In view of problems of big labor intensity and bad reliability existed in original water drainage system of Kongzhuang Coal Mine which uses manual mode to open and close stop valve and electric valve, the paper proposed a reform scheme of monitoring system of mine water drainage based on PLC. It introduced design of hardware and software of the system in details. The actual application showed that the system runs stably and reduces labor intensity.