Automatic Monitoring System For Saturation Line Of Tailings Reservoir Dam

Tailings reservior are widely distributed in China,and most of them have potential safety hazards.Among them,seepage is the main factor of tailings reservoir safety accidents,which will cause the occurrence of landslides and collapses in tailings reservoirs.The saturation line is the focus of seepage monitoring.Therefore,it is extremely necessary to establish a saturation line monitoring system for the tailings reservior,which can remotely monitor the circumstances of the tailings reservoir immersion line.The existing saturation line monitoring systems mainly adopt wired data transmission mode,which is not convenient for widely distributed sensors.According to the existing problems,this thesis proposes an automatic monitoring system for the saturation line of tailings reservoir based on narrow-band Internet of Things technology.The experimental results show the effectiveness of the system.The research content and main work of this thesis are as follows:(1)Based on sensors,NB-IoTs and other technologies,low-power,stable water level monitoring terminal is designed.The monitoring terminal adopts STM32RET6 type single-chip microcomputer as the main controller.By optimizing the power supply circuit,signal acquisition circuit and data transmission circuit,the functions of frequency acquisition,temperature acquisition and air pressure collection are realized,which ensure the stability and reliability of data acquisition.(2)Improve the measurement accuracy of water level data by improving the procedure of frequency sweep,and filtering the frequency data,temperature data,and barometric pressure data.By transplanting the network transmission program of the NB-IoT module to the STM32RET6 type single-chip microcomputer and registering the device information on the OneNET platform,the collected water level and air pressure monitoring data can be uploaded to the OneNET platform.(3)Using Visual Studio 2013 development platform and MySQL database technology,the monitoring platform of the tailings reservoir dam body saturation line automatic monitoring system is designed to realize the visualization of the immersion line monitoring interface.The automatic monitoring system of the tailings reservoir dam body immersion line designed in this thesis can not only effectively solve the collection and transmission of field sensor monitoring data,but also can be used as an evaluation system for theoperation status of tailings reservior,which has important research significance and application prospects.