The Design Of Coal Mine Microseismic Monitoring System Based On LabVIEW

Coal is the basic energy and important material of our country.The coal industry is an important basic industry related to the lifeline of national economic and energy security.Since twentieth Century.China’s coal industry has made great progress,but during the development process the unbalanced,uncoordinated and unsustainable issues are still outstanding.The situation of coal mine safety production is serious,and the safety accidents happen frequently,causing serious economic losses,casualties and adverse social impact.In the practical application of traditional coal mine monitoring methods,there are many deficiencies.Therefore,a new monitoring method is needed to meet the growing monitoring needs.Microseismic monitoring technology is a new kind of coal mine monitoring and early-warning technology.Through monitoring the microseismic signal generated by micro cracks in coal rock under internal or external disturbances,it reflects the stability of coal rock,and realizes the monitoring and early warning of disasters,so that it can take corresponding preventive treatment.Because of the complicated mining environment in coal mine,it is very important to develop the corresponding coal rock microseismic monitoring system.In view of the above problems,a series of work has been done on the development of coal mines microseismic monitoring system in this paper.(1)The importance of the coal mine industry in China and the role of microseismic monitoring technology in the prevention and control of coal mine disasters are analyzed.The domestic and international research situation of microseismic monitoring technique and microseismic source location algorithm is investigated.(2)According to the coal mine environment,the design requirements of microseismic monitoring system are analyzed.Based on the design requirements,this paper puts forward the overall scheme of microseismic monitoring system.Meanwhile,the design of hardware and device selection is completed,which provides a hardware foundation for the design of the software of the follow-up work.(3)In this paper,the real-time acquisition software of microseismic monitoring system is realized by using Lab VIEW.The overall structure and operation flow of the software are analyzed,and the related DLL functions and the main modules are introduced in detail.Finally,the acquisition parameters configuration,the multi-channel synchronous acquisition and the display,storage and transmission functions of microseismic signals are realized.It lays a foundation for the analysis and location of microseismic signals.In the laboratory environment,the microseismic monitoring system developed in this paper has carried on the standard sine signal acquisition test and the artificial simulation microseismic signal acquisition test,which is verified the reliability of the system in a laboratory environment.At the same time,the microseismic monitoring system designed in this paper has carried on the field test in the Yanzishan Coal Mine,Datong Coal Group.Microseismic monitoring system is used to monitor microseismic signals in coal mine and the feasibility of microseismic monitoring system in field environment is verified.(4)The microseismic source location software of microseismic monitoring system is realized in this paper.The.implementation process of microseismic source location is analyzed,and the principle of the simplex method and the algorithm of the software realization process are studied and presented.After that The major modules of the microseismic source location software are described in detail.Finally,through the microseismic location test in laboratory,the feasibility of the microseismic source location software designed in this paper is verified.Using microseismic monitoring system to collect and locate the simulated microseismic signals,the positioning error is about 10%which is satisfied.